Concrete
Microgrids can transform cement plant energy sourcing
Published
10 months agoon
By
admin
Dr Avijit Mondal, Deputy General Manager (DGM), NTPC Energy Technology Research Alliance (NETRA), NTPC, explains in detail how power sector innovations are opening new frontiers for energy-intensive industries like cement.
As the cement sector seeks pathways to efficiency and decarbonisation, lessons from the power sector—particularly thermal and renewable energy research—are becoming indispensable. Dr Avijit Mondal, Deputy General Manager, NTPC Energy Technology Research Alliance (NETRA), NTPC, shares how innovations ranging from microgrids and biomass co-firing to CO2-to-methanol pilots and CFD modelling are reshaping cement plant energy sourcing. In this conversation, he outlines a roadmap where power plant technologies and cement operations converge to deliver cleaner, more reliable and cost-efficient production.
How does research in thermal power plants drive energy efficiency for heavy industrial loads such as cement?
Cement is India’s second-largest industrial power consumer, and every kilowatt-hour saved or sourced from cleaner energy directly lowers the cost of clinker production. Research and development in thermal power plants (TPPs) plays a critical role in achieving these gains, delivering benefits through high-efficiency generation, flexible operation, improved power quality and integrated carbon management. Most importantly proper combustion in boilers (thermal power plants) creates good quality fly ash (bottom ash), which is an important raw material for the cement industry.
Advancements such as supercritical and ultra-supercritical steam cycles, improved turbine designs and auxiliary systems with variable frequency drives on feedwater, induced-draft, and forced-draft fans lower heat rates by 1.5 per cent to 3 per cent, reducing both grid emission factors and delivered tariffs-especially during off-peak hours. Ultra-low-load stable operation enables cement plants to shift energy-intensive processes such as finish grinding and mine operations to off-peak night hours, reducing power costs. R&D in coal-quality handling-using on-belt analysers and AI-driven blending-enhances steam generator stability, reducing ramp losses and improving heat rates, which in turn minimises power price volatility for industrial users.
Power quality research, including stat-coms, synchronous condensers and harmonic filters, stabilises voltage and frequency for large drives, reducing motor losses, tripping incidents and rework in cement operations. Flexible load management and industrial demand response strategies co-developed with utilities-such as automated compressor/crusher set-backs and ‘grind-at-night, burn-by-day’ schedules-help align cement energy use with renewable-rich periods. On the thermal side, TPP waste-heat recovery concepts, air preheaters and regenerative exchangers have been adapted for cement kilns, enabling exhaust gas recovery for process heat or captive power.
Parallel work in low-NOx combustion, biomass co-firing and fuel preparation optimises kiln firing efficiency, while digitalisation and predictive analytics, pioneered in TPP operations, enhance process control, maintenance scheduling, and energy loss detection in cement plants. Cogeneration models allow direct supply of steam or heat from nearby TPPs, and joint carbon capture and utilisation research offers pathways to mineralise captured CO2 in cement or use it in curing, further reducing emissions.
The combined effect of these interventions is substantial: incremental heat-rate improvements alone can lower grid CO2 intensity by 20-40 g/kWh, while smart time-of-use alignment can cut plant power costs by 2 per cent to 4 per cent. Together, these innovations lower specific energy consumption, improve process stability, and make cement manufacturing more cost-competitive and sustainable.
What innovations in microgrids or Solar/BESS could benefit cement power sourcing microgrid architecture for cement?
Cement manufacturing is among the most energy-intensive industrial processes, with continuous high loads from kilns, grinding mills, crushers and conveyors. Integrating a hybrid behind-the-meter microgrid offers a powerful solution to improve energy efficiency, reduce power costs, and enhance operational resilience. A typical integrated cement plant can deploy a hybrid system comprising 8-15 MWp of rooftop and ground-mounted solar PV, 8-25 MW of waste heat recovery (WHR) capacity, and a Battery Energy Storage System (BESS) sized for 15-30 minutes of peak plant load. In this configuration, solar PV supplies the daytime base load for processes like grinding and material transport, WHR delivers steady baseload power for kiln and cooler exhaust, and BESS handles ramping and flicker control. The BESS also enables peak shaving during kiln starts or crusher surges, provides frequency and VAR support to safeguard large variable frequency drives (VFDs), smooths renewable fluctuations to stabilise kiln induced-draft (ID) control, and offers black-start capability for captive power systems.
The system is coordinated by an advanced Energy Management System (EMS) with process awareness. This EMS forecasts solar generation and plant load, dynamically reschedules non-critical operations such as mills, packing lines and mine conveyors into solar-rich periods, and isolates the kiln and calciner from disturbances. It can also manage load shifting strategies, such as ‘grind at day, burn at night,’ aligning with renewable-rich grid periods.
Recent innovations in industrial-scale BESS include long-duration storage (4-8 hours) to cover full or partial shifts on solar and WHR, and high-C-rate batteries capable of handling sudden restarts or process surges. Some plants also deploy DC-coupled PV + BESS configurations, which reduce inverter losses and improve round-trip efficiency compared to AC-coupled systems. Capturing curtailed renewables by storing excess solar or wind energy in BESS or using it for low priority loads such as precursing further enhances system value.
Supporting infrastructure includes microgrid-ready switchgear and fast-transfer/static breakers to enable seamless islanding from the grid without tripping large motors. The architecture supports multiple operating modes:
- Grid-Connected Optimised Mode: Minimises grid draw during peak tariff hours.
- Island Mode: Operates on WHR + Solar + BESS during grid outages.
- Peak Shaving Mode: Uses BESS to offset short-term spikes, reducing demand charges.
- Load Shifting Mode: Aligns high-energy processes with solar availability.
Impact: Field implementations show 18 per cent to 28 per cent reductions in grid imports, 3 per cent to 6 per cent lower specific power costs, improved power quality (fewer nuisance trips), and measurable gains in kiln uptime. By combining solar, WHR, storage and intelligent control, microgrids can transform cement plant energy sourcing into a cleaner, more reliable and more cost-effective system.
How does a flue-gas CO2-to-methanol pilot translate to process efficiencies?
A flue-gas CO2-to-methanol pilot can translate into process efficiencies for both power plants and the cement industry in ways that go beyond just making methanol-it can also improve energy utilisation, plant integration and operational flexibility.
Here’s the breakdown in context:
A. Productive Use of a Waste Stream
- Traditional: Flue gas CO2 is a liability-needs to be vented or captured and stored, consuming energy without direct revenue.
- With CO2-to-Methanol: CO2 becomes a feedstock for a value-added product (methanol), effectively monetising a waste stream.
- Efficiency Link: This improves the overall resource efficiency of the plant because the carbon in the fuel/raw material is not wasted but transformed into a marketable chemical.
B. Integration with Heat and Power Flows
- The hydrogen for methanol synthesis (via water electrolysis) requires significant electricity, ideally from renewable or low-cost surplus power.
- In power plants: The process can use low-grade waste heat from turbines or economisers to preheat CO2/H2 streams, reducing compression and reaction energy.
- In cement plants: Kiln and clinker cooler waste heat can play the same role, allowing higher overall thermal efficiency without disrupting clinker production.
C. Smoothing Power Plant Load and Improving Capacity Factor
- Electrolysers for H2 production can act as a flexible load:
- Ramp up when grid demand is low or renewable generation is high.
- Ramp down when power demand is high.
- Benefit for TPPs: Reduces the need for inefficient low-load operation and enables steadier turbine efficiency.
Benefit for cement plants: If tied to an on-site WHR + PV/BESS microgrid, it can soak up excess renewable/WHR power during low cement demand periods.
D. Synergy with Flue Gas Conditioning
- The CO2 capture step for methanol production often includes flue gas cleaning (removing SOx, NOx, particulates).
- This upgrades the quality of flue gas, which can reduce corrosion/fouling in downstream WHR boilers, improving plant availability and heat recovery efficiency.
E. Reduction in Carbon Intensity
- Power sector: Each tonne of CO2 converted to methanol lowers net emissions, improving compliance with carbon pricing or emission norms.
- Cement sector: Reduces CO2 intensity per tonne of clinker by diverting a portion of process emissions into methanol synthesis.
F. Methanol as a Circular Energy Carrier
The methanol produced can be:
- Sold as a chemical feedstock or marine fuel.
- Used internally in dual-fuel boilers/turbines for backup power.
This creates an energy loop-CO2 captured from flue gas ? methanol ? reconverted to energy when needed, improving energy storage and fuel flexibility.
Can biomass co-firing methods from power plants be customised for cement kilns?
Yes-adaptation is practical, with kiln-specific care:
Transferable learnings from utility co-firing
- Feedstock prep: Size reduction, torrefaction/pelletising, moisture control ? stable feeding through calciner/kiln burners.
- Metering and pneumatics: Proven dosing/air-assist systems maintain steady thermal input and flame shape.
- Chlorine/alkali management: Power-plant protocols for fuel qualification apply directly; in cement, they also protect clinker quality and rings.
- Cement-specific customisations
- Burner tuning: Biomass raises volatiles and lowers flame temperature; adjust primary/secondary air, swirl, momentum to avoid over-penetration or CO spikes.
- Ash chemistry: Track K2O/Na2O/Cl and P2O5 to manage coating and alite formation; limit certain agri residues unless pre-leached or blended.
- Where to fire: Higher substitution is often easier in the calciner than main burner; start 10 per cent to 20 per cent TSR in calciner, step up with monitoring.
- Outcomes: 15 per cent to 35 per cent thermal substitution is realistic with prepared biomass; 1 per cent to 4 per cent specific heat consumption (SHC) reduction from improved combustion stability and moisture trimming.
How does CFD modelling optimise combustion for lower fuel use and emissions?
Computational Fluid Dynamics (CFD) has emerged as an indispensable tool for optimising energy efficiency, combustion stability, and emissions control in cement manufacturing. By simulating the three-dimensional flow dynamics and combustion chemistry inside the kiln, calciner, tertiary air ducts, and burners, CFD provides a deep, visual understanding of how gases, fuels and solids interact. These insights enable targeted design improvements and operational fine-tuning, ultimately reducing energy consumption and extending equipment life.
Design and operational applications. CFD modelling allows engineers to evaluate and optimise critical parameters including:
- Burner Quarles and Jet Geometry: Adjusting jet angles, swirl intensity, and momentum ratios for ideal flame characteristics.
- Airflow Distribution: Balancing secondary and tertiary air splits to match process demand.
- Calciner Staging: Sequencing combustion zones to maximise calcination efficiency.
- SNCR/AFR Injection Points: Locating selective non-catalytic reduction systems and alternative fuel inlets for optimal mixing and burnout.
Efficiency and performance levers are identified through CFD
- Burner Optimisation: Tailoring swirl and jet momentum to create a narrower, elongated flame enhances heat transfer to the kiln bed, delivering a 0.5 per cent to 2 per cent reduction in specific heat consumption (SHC).
- Optimised Calciner Staging: Achieving complete calcination at reduced excess air levels cuts NO emissions by 15 per cent to 30 per cent while avoiding the energy penalties of over-firing.
- Hot-Spot Mitigation: Detecting and eliminating localised high-temperature zones prevents ring formation and coating build-ups, extending refractory life and improving uptime-a significant indirect energy saving.
Strategic AFR Placement: Injecting late-volatile alternative fuels in zones with the right oxygen and temperature balance avoids CO spikes and unburnt fuel losses.
The power of CFD lies not only in simulation but also in validation and integration. Best practice involves confirming model predictions through on-site measurements, including kiln hood and calciner thermography, CO/NOx traverses, and clinker microscopy. Once validated, these insights can be locked into operations using Advanced Process Control (APC) systems, ensuring consistent, long-term efficiency gains.
What role will hydrogen technologies play in decarbonising heavy industries?
Near-term actions (0-5 Years)
- Hydrogen Enrichment of Burners (5 per cent to 20 per cent): Enhance flame stability and precision, enabling higher biomass and alternative fuel (AFR) substitution without incurring CO emissions penalties.
- Green Oxygen Integration: Use oxygen generated from electrolysers to reduce excess air requirements and achieve better stoichiometric control, lowering NOx formation.
- Power-to-Heat Applications – Deploy electro-boilers and electric dryers for plant auxiliaries in solar-rich regions, freeing up fossil-fuel-derived heat for the kiln.
- Medium-term actions (5-10 Years)
- Hydrogen-Ready Burners: Install kiln and calciner burners designed for high hydrogen blends, with ammonia used as a hydrogen carrier and cracked near the point of use.
- E-Fuels Co-Firing: Incorporate e-methanol or e-syngas to provide dispatchable, low-carbon thermal energy.
How are ash or waste-heat recovery (WHR) technologies from power plants applicable to cement production?
Ash utilisation
- Fly Ash in Blended Cements (PPC/PSC): Substituting 25 per cent to 35 per cent clinker with fly ash significantly reduces thermal load and CO2 intensity. Performance depends on Loss on Ignition (LOI), fineness, and phase composition; selectively harvested dry-silo ash offers the most consistent quality.
- Bottom Ash / Pond Ash: Usable in certain
products after classification and grinding, though attention is needed to control unburnt carbon and contaminants. - FGD Gypsum: Flue Gas Desulphurisation gypsum from power plants provides a dependable alternative to natural gypsum for setting regulation.
Waste heat and power integration
• Cement WHR Systems: Using AQC/SP boilers with steam turbines or Organic Rankine Cycle (ORC) units typically recovers 20-35 kWh/t clinker. Best practice involves applying utility pinch-analysis learnings, controlling fouling,
and optimising condenser pressure for uptime and efficiency.
• Cross-Industry Synergies: Co-location with power plants enables use of their low-grade heat (or CO2 capture waste heat) for pre-drying alternative fuels or raw mix; conversely, WHR output from cement plants can supply auxiliary loads during grid peak demand.
• Circular Economy Benefits: Combining ash and FGD gypsum utilisation closes the mineral loop, while WHR and low-grade heat recovery close the energy loop-together lowering Specific Heat Consumption (SHC) and Scope 1 and 2 emissions.
A practical 6-step roadmap for cement plants
• Step 1: Energy Mapping and Pinch Analysis: Assess kiln, calciner, mills, and auxiliaries to identify 1 per cent to 3 per cent SHC savings.
• Step 2: CFD and Advanced Process
Control: Optimise burner, calciner, and AFR injection points for improved efficiency and emissions control.
• Step 3: Solar-WHR-BESS Microgrid: Implement process-aware Energy Management Systems to achieve 15 per cent to 20 per cent peak-shaving.
• Step 4: Biomass/AFR Scale-Up: Apply fuel-lab testing protocols to safely reach 20 per cent to 30 per cent Thermal Substitution Rate (TSR) in the calciner first.
• Step 5: CO2-to-X Pilots: Integrate heat
cascade systems and O2 reuse where green power is accessible.
• Step 6: Power-Sector Partnerships: Secure agreements for deep-turndown tariffs, power-quality guarantees, and consistent Class-A fly ash and FGD gypsum supply.
With contribution from Dr Gaurav Richhariya,
Executive R&D (Ash Technology), NTPC Energy Technology and Research Alliance (NETRA), NTPC.
Concrete
Ambuja Sees Cement Demand Easing To Around Five Per Cent In FY27
Company Cites Housing, Infrastructure And Government Capex
Published
6 hours agoon
June 22, 2026By
admin
Ambuja Cements has said in its latest annual report that cement demand in India is likely to moderate to around five per cent in fiscal year twenty seven, marking a slowdown from the estimated six point five to seven point five per cent growth anticipated for fiscal year twenty six. The company described this as a transition to a more measured pace of expansion after several years of strong momentum in the sector.
It said that underlying demand drivers such as housing, infrastructure development, urbanisation and government capital expenditure remain intact and are expected to sustain cement consumption across regions. The report noted that global geopolitical uncertainties and weather risks, including forecasts of a below normal monsoon, could influence near term demand, while emphasising that the longer term infrastructure story for India continues to provide a solid foundation for the sector.
Industry observers have said that the sector may move towards mid single digit growth rates in fiscal year twenty seven after stronger performances in recent years. The company outlined a calibrated expansion strategy with capacity additions phased to match project pipelines, regional demand patterns and market absorption, seeking to avoid oversupply and pressure on pricing.
Ambuja has crossed the 100 million tonnes per annum capacity milestone (100 mn t per annum) following acquisitions and organic expansion, strengthening its position in the competitive market. The outlook in the report broadly aligns with other market assessments that placed demand at around five per cent in fiscal year twenty five, a recovery to six point five to seven point five per cent in fiscal year twenty six and an easing in fiscal year twenty seven as capacity increases. Executives remain focused on long term demand fundamentals driven by infrastructure and housing.
Gears, drives, and motors have evolved from essential mechanical components into strategic enablers of reliability, efficiency, and sustainability in modern cement plants. ICR explores how advanced motion technologies, predictive maintenance, digitalisation, and intelligent drive systems are helping cement manufacturers reduce downtime, optimise energy use, and build future-ready operations.
As the Indian cement industry prepares for another phase of capacity expansion, the focus is shifting from merely increasing production volumes to improving operational efficiency, reliability, and sustainability. According to industry estimates, India is expected to add nearly 160–170 million tonnes of cement capacity between FY26 and FY28, driven by infrastructure investments, urbanisation, and housing demand. In this environment, gears, drives, and motors have emerged as critical enablers of productivity, forming the backbone of every major process from raw material extraction and grinding to clinker production and cement dispatch.
Motors alone account for nearly 60 per cent to 70 per cent of industrial electricity consumption globally, according to the International Energy Agency (IEA), while rotating equipment failures remain among the leading causes of unplanned downtime across heavy industries. In cement plants, where equipment operates under high loads, extreme dust conditions, elevated temperatures, and continuous-duty cycles, the performance of gears, drives, and motors directly influences energy consumption, maintenance costs, plant availability, and overall profitability. As digitalisation and Industry
4.0 technologies gain momentum, these systems are evolving from passive mechanical components into intelligent assets capable of delivering real-time operational insights.
Why gears, drives, and motors are the backbone of cement plant operations
Every major process in a cement plant depends on the seamless operation of gears, drives, and motors. Raw mills, vertical roller mills, crushers, kiln drives, conveyor systems, fans, and clinker coolers all rely on rotating equipment to maintain continuous production. A failure in any one of these systems can disrupt entire process chains, highlighting their strategic importance.
Modern cement plants process thousands of tonnes of material daily, requiring equipment capable of transmitting enormous torque while maintaining precision and reliability. Kiln drives and grinding systems, in particular, operate under some of the highest mechanical loads found in industrial manufacturing. The ability of gears and motors to withstand these conditions directly impacts plant throughput and production stability.
Satish Maheshwari, Chief Manufacturing Officer, Shree Cement says, “Effective lubrication management remains one of the most critical factors in extending the lifespan of cement plant drive systems. Proper lubrication, supported by regular oil analysis, vibration diagnostics, and condition monitoring, helps minimise wear, prevent unexpected failures, and maintain the integrity of critical components such as gearboxes, motors, and drive assemblies. By identifying potential issues at an early stage, plants can move from reactive maintenance to a more proactive and reliability-focused approach.”
“Smart motors, intelligent drives, and next-generation gearboxes are set to redefine cement plant maintenance and performance. Equipped with embedded sensors, IoT connectivity, digital twins, and AI-driven diagnostics, these technologies enable real-time condition monitoring, predictive maintenance, and seamless digital integration. As the industry embraces Industry 4.0, smart drive systems will play a pivotal role in improving energy efficiency, reducing downtime, and optimising asset performance across the cement manufacturing value chain” he adds.
Industry studies suggest that rotating equipment accounts for a significant proportion of maintenance expenditure in process industries. Effective design, selection, and maintenance of gears, drives, and motors therefore have a direct influence on asset utilisation, operational efficiency, and total cost of ownership.
The cost of downtime: reliability challenges in rotating equipment
Unplanned downtime remains one of the most expensive challenges facing cement manufacturers. Industry estimates indicate that a major failure involving a critical gearbox, kiln drive, or grinding mill can result in production losses running into lakhs of rupees per hour, depending on plant capacity and operating conditions.
Sanjeev Arora, President – Motion Business & IEC LV Motors Division, ABB India says, “One of the most significant shifts taking place in industrial decision-making today is moving away from evaluating equipment based solely on upfront capital cost toward understanding total cost of ownership (TCO). In a typical motor system, the purchase price often represents only a small fraction of the total lifecycle cost however energy consumption, maintenance requirements, downtime and operating efficiency account for the vast majority of long-term operational expenses. For cement manufacturers operating in highly competitive markets, this distinction is critical.”
“A high efficiency motor paired with an appropriately configured variable speed drive may require a higher initial investment, but the long-term benefits are substantial. Reduced electricity consumption, lower maintenance needs, longer service intervals and improved process stability can deliver faster payback and stronger profitability over time” he adds.
Cement plants present a particularly challenging environment for rotating equipment. Dust ingress, thermal fluctuations, shock loads, vibration, shaft misalignment, and lubrication contamination contribute significantly to equipment degradation. Studies by SKF indicate that nearly 50 per cent of bearing failures are linked to lubrication issues and contamination, while improper alignment and vibration-related problems remain leading causes of gearbox and motor failures.
Energy-efficient motors and drives: unlocking operational savings
Energy is one of the largest operating expenses for cement manufacturers, often accounting for 25 per cent to 35 per cent of total production costs. Grinding operations alone can consume nearly 60 per cent to 70 per cent of a plant’s electrical energy, making energy-efficient motors and drives a strategic investment.
According to the International Energy Agency, high-efficiency motors combined with Variable Frequency Drives (VFDs) can reduce energy consumption by 20 per cent to 30 per cent in suitable applications. By matching motor speed and torque to actual process requirements, VFDs minimise unnecessary power consumption while reducing mechanical stress on equipment, improving both efficiency and reliability.
Advances in gearbox design and power transmission technologies
Modern gearbox technology has evolved significantly in response to the increasing demands of cement manufacturing. Advanced materials, case-hardened gears, optimised tooth profiles, improved surface finishing, and enhanced lubrication systems are helping reduce friction, wear, and thermal loading.
Girish Hanchate, Director – Industrial Market, India SKF India (Industrial) says, “Smart diagnostics are significantly improving the lifecycle of gears, motors, and other rotating equipment by enabling a shift from reactive maintenance to condition-based asset management. Hidden issues such as vibration anomalies, bearing defects, misalignment, and temperature fluctuations can quietly reduce plant throughput by 10 per cent to 20 per cent while increasing energy consumption long before a breakdown occurs. By leveraging advanced sensors, predictive analytics, machine learning, and real-time monitoring of vibration, temperature, and motor current, cement manufacturers can detect developing faults early, optimise maintenance schedules, and prevent costly secondary damage. This not only improves reliability but also supports energy efficiency and sustainability objectives.”
“The next major evolution in drive and bearing technology lies in the development of fully integrated smart mechanical ecosystems that combine high-performance bearings, advanced lubrication management, and digital intelligence. Sensor-enabled condition monitoring embedded directly within bearings and drive systems allows operators to capture critical operational data at the source, enabling predictive maintenance and real-time performance optimisation. Innovations such as SKF’s VA9A1 Spherical Roller Bearing series, engineered specifically for demanding cement applications such as crushers and kilns, demonstrate this trend. By increasing internal bearing space and optimising lubricant flow, these designs improve grease retention, reduce wear, minimise downtime, and create more resilient, energy-efficient rotating equipment systems for the future of cement manufacturing” he adds.
Manufacturers are increasingly focusing on compact, high-torque gearbox designs capable of delivering higher power density while maintaining service life. Innovations such as condition-monitored gear systems, improved sealing technologies, and modular gearbox architectures are simplifying maintenance while enhancing operational reliability.
Predictive maintenance, condition monitoring, and asset health management
The shift from reactive to predictive maintenance is transforming asset management across the cement industry. Technologies such as vibration monitoring, thermography, oil analysis, ultrasound testing, and motor current signature analysis are enabling operators to identify potential failures before they occur.
Research by Deloitte suggests that predictive maintenance can reduce breakdowns by up to 70 per cent and lower maintenance costs by 25 per cent. In cement plants, where shutdown windows are limited and equipment operates continuously, predictive maintenance offers a powerful tool for improving reliability and extending asset life.
Digitalisation, industry 4.0, and the rise of intelligent drive systems
Industry 4.0 technologies are redefining the role of gears, drives, and motors. Smart sensors embedded within motors, bearings, and gear systems can continuously monitor temperature, vibration, load, lubrication condition, and energy consumption.
Girish Hanchate says, “As the industry embraces automation, sustainability, and digital transformation, the importance of intelligent motion technologies will continue to grow. The convergence of advanced engineering, predictive maintenance, and Industry 4.0 solutions is creating a new generation of cement plants where reliability, efficiency, and sustainability work together to deliver long-term value. For cement manufacturers navigating increasing production demands and environmental expectations, investing in smarter gears, drives, and motors is no longer optional—it is a business imperative.”
Cloud-based monitoring platforms and Industrial Internet of Things (IIoT) architectures enable maintenance teams to access equipment health data remotely, improving visibility across geographically dispersed operations. Advanced analytics and
artificial intelligence are further enhancing fault detection capabilities, enabling more accurate maintenance planning.
The emergence of digital twins represents another significant development. By creating virtual replicas of physical assets, operators can simulate operating conditions, predict failures, optimise maintenance schedules, and improve lifecycle management decisions. These technologies are helping transform rotating equipment into intelligent assets that actively contribute to operational decision-making.
Building future-ready cement plants through smart motion technologies
The future of cement manufacturing will depend heavily on the ability to integrate mechanical reliability with digital intelligence. Smart motion technologies combine high-efficiency motors,
intelligent drives, condition monitoring systems, and automation platforms to create more responsive and efficient operations.
Sustainability goals are also accelerating investment in advanced motion technologies. Reduced energy consumption, improved equipment efficiency, and extended asset life contribute directly to lower carbon emissions and reduced resource consumption.
These benefits align closely with the industry’s decarbonisation objectives.
As capacity expansions continue across India, future-ready cement plants will increasingly prioritise reliability, flexibility, and data-driven decision-making. Organisations that successfully integrate smart motion technologies into their operations will be better positioned to reduce costs, improve productivity, and maintain a competitive advantage in a rapidly evolving market.
Conclusion
Gears, drives, and motors are no longer viewed solely as mechanical components; they have become strategic assets that influence every aspect of cement plant performance. Their reliability affects production continuity, their efficiency impacts operating costs, and their digital capabilities increasingly shape maintenance and operational strategies.
- –Kanika Mathur
Lubrication has evolved from a routine maintenance activity into a critical driver of reliability, energy efficiency, and sustainability in cement manufacturing. ICR explores how advanced lubricants, predictive maintenance, and Total Lubrication Management are helping cement plants reduce downtime, optimise performance, and achieve long-term operational excellence.
In the cement industry, discussions around operational excellence often focus on kiln efficiency, alternative fuels, digitalisation, and process optimisation. Yet one of the most influential factors affecting equipment reliability, energy consumption, maintenance costs, and sustainability often receives far less strategic attention: lubrication. From vertical roller mills and kiln drives to crushers, conveyors, clinker coolers, and large industrial gearboxes, every critical asset depends on effective lubrication to minimise friction, reduce wear, and ensure uninterrupted operation.
The importance of lubrication extends far beyond routine maintenance. According to tribology research, nearly 23 per cent of global energy consumption is associated with overcoming friction and replacing worn components. Researchers have estimated that implementing advanced tribological practices could reduce global energy consumption by as much as 8.7 per cent in the long term. For cement manufacturers operating in highly demanding environments characterised by abrasive dust, heavy loads, high temperatures, vibration, and continuous operations exceeding 8,000 hours annually, lubrication has evolved from a maintenance function into a strategic lever for reliability, sustainability, and profitability.
The significance of this opportunity becomes even clearer when viewed against the backdrop of the cement industry’s environmental challenges. According to the International Energy Agency (IEA), cement manufacturing accounts for approximately 7–8 per cent of global CO2 emissions and consumes nearly 5 per cent of industrial energy worldwide. While much attention is rightly directed toward alternative fuels, clinker factor reduction, and carbon capture technologies, maintenance practices such as lubrication remain one of the most practical and immediately deployable avenues for improving efficiency and reducing emissions.
Why lubrication is critical to cement plant reliability
Cement manufacturing relies on some of the most heavily loaded rotating equipment found in industrial production. Kiln support rollers, girth gears, vertical roller mills, crushers, conveyors, ID fans, and large gearboxes operate under extreme conditions where temperatures, loads, and contamination levels routinely challenge equipment integrity. Under such circumstances, lubricants serve not merely as friction-reducing agents but as essential protective barriers that prevent metal-to-metal contact, dissipate heat, minimise wear, and extend component life.
A modern integrated cement plant may contain thousands of lubrication points distributed across critical and auxiliary equipment. Even a minor lubrication-related issue can escalate rapidly when equipment operates continuously around the clock. Unlike batch manufacturing operations, cement plants often have limited opportunities for shutdowns, making asset reliability a key business priority. Effective lubrication directly contributes to machine availability, process stability, and production continuity.
Industry studies consistently demonstrate the relationship between lubrication and reliability. Research published by SKF indicates that approximately 36 per cent of premature bearing failures are caused by poor lubrication practices, while bearing damage accounts for nearly 50 per cent of rotating equipment failures globally. Similarly, studies by Machinery Lubrication have found that improper lubrication contributes to roughly 43 per cent of mechanical failures and more than half of bearing-related breakdowns. These statistics highlight a critical reality: lubrication is not simply a maintenance task but a reliability strategy.
The consequences of lubricant failure extend well beyond replacement parts. A failed bearing in a vertical roller mill, kiln drive, or critical conveyor system can trigger extended downtime, emergency maintenance costs, production losses, and supply chain disruptions. In large integrated cement plants, even a few hours of unplanned downtime can result in significant financial losses, making lubrication one of the most cost-effective reliability investments available.
Hidden cost of poor lubrication management
Many organisations continue to treat lubrication as a consumable expense rather than a strategic asset management function. This mindset often results in inconsistent lubrication schedules, incorrect lubricant selection, contamination issues, over-lubrication, under-lubrication, and inadequate monitoring practices. The resulting impact is often far greater than the actual cost of the lubricant itself.
Professor Procyon Mukhejee says “Lubricant purchasing often followed a conventional sourcing model: negotiate annual contracts, standardise product grades and optimise price. That logic is still relevant but no longer sufficient. In a cement plant, a lower-cost lubricant that reduces purchase spend may increase oil replacement frequency, raise wear rates or contribute to avoidable downtime. That trade-off is forcing procurement teams to think differently.”
According to industry research, up to 70 per cent of mechanical failures can be linked to contamination, improper lubricant selection, or inadequate lubrication practices. Noria Corporation estimates that world-class lubrication programmes can reduce maintenance costs by 20–40 per cent and extend equipment life by as much as 50 per cent. Conversely, reactive lubrication practices increase spare-part consumption, raise labour requirements, accelerate equipment wear, and elevate operational risk.
The hidden costs are particularly severe in cement plants because contaminants such as dust, moisture, and wear particles are ever-present. Even microscopic contaminants can damage bearing surfaces and gear teeth, leading to premature failure. Poor lubrication management also increases energy consumption because higher friction levels require greater power input to maintain production rates. As a result, the true cost of poor lubrication extends far beyond maintenance budgets and directly impacts overall plant profitability.
Lubricants and energy efficiency
Energy represents one of the largest operating expenses in cement manufacturing. Grinding operations alone account for approximately 60–70 per cent of total electrical energy consumption within a typical cement plant. Consequently, any improvement in equipment efficiency can generate substantial cost savings over time.
Lubricants contribute directly to energy efficiency by reducing friction between moving surfaces. Lower friction means less resistance, lower operating temperatures, and reduced power requirements. Advanced lubricant formulations are specifically designed to optimise film strength while minimising energy losses across gears, bearings, and hydraulic systems.
Dr SB Hegde, Global Cement Industry Expert says, “One of the most overlooked aspects of lubrication in cement plant operations is effective contamination control combined with disciplined greasing practices. Cement dust, which is often harder than bearing steel, can mix with lubricants and create an abrasive grinding paste that accelerates wear and is responsible for a significant share of bearing failures. Despite this, many plants still rely on manual, time-based greasing and outdated sealing systems, resulting in higher energy consumption, premature component wear, and frequent unplanned shutdowns. Automatic lubrication systems, coupled with robust dust exclusion measures, remain one of the most underutilised yet effective reliability solutions in the industry.”
“Smart lubrication practices can have a direct and measurable impact on both profitability and sustainability. The use of high-performance synthetic lubricants, combined with predictive oil condition monitoring, can typically deliver energy savings of 3–4 per cent, translating into substantial annual cost reductions for cement manufacturers. In one notable case, a large cement producer implemented wireless condition monitoring alongside advanced lubrication practices on critical assets and achieved a 57-times return on investment within six months. The initiative generated savings exceeding `8.4 crore and prevented a major bearing failure that could have caused more than 160 hours of downtime, highlighting the significant financial value of proactive lubrication management” he adds.
Research by ExxonMobil and other lubricant manufacturers has demonstrated that synthetic lubricants can reduce energy consumption in industrial gear systems by 2–6 per cent under appropriate operating conditions. While these savings may appear modest on an individual machine basis, the cumulative impact across multiple mills, fans, conveyors, and drive systems can be considerable. For large cement manufacturers operating energy-intensive facilities, even a 2 per cent reduction in power consumption can translate into significant annual cost savings.
Furthermore, reduced friction contributes to improved equipment performance and lower heat generation, enabling machinery to operate more consistently under demanding conditions. In an industry where energy efficiency and carbon reduction targets are becoming increasingly important, lubrication represents a practical pathway for achieving measurable improvements.
Advances in synthetic and high-performance lubricants
The lubricant industry has undergone significant transformation over the past decade. Traditional mineral oils are increasingly being supplemented or replaced by synthetic and semi-synthetic formulations engineered specifically for demanding industrial applications.
Modern synthetic lubricants provide superior oxidation resistance, thermal stability, viscosity retention, load-carrying capacity, and wear protection compared to conventional products. These characteristics are particularly valuable in cement applications where equipment is exposed to extreme temperatures, heavy loads, and continuous operation.
Many premium synthetic lubricants now deliver service lives two to five times longer than traditional mineral oils. This not only reduces lubricant consumption but also minimises maintenance interventions and associated downtime. For cement manufacturers, extended oil drain intervals can significantly improve equipment availability and reduce lifecycle costs.
Synthetic gear oils have gained widespread acceptance in applications such as kiln drives, vertical roller mills, and high-load gearboxes. Field studies have reported gearbox temperature reductions of up to 10°C following conversion from conventional lubricants to advanced synthetic alternatives. Lower operating temperatures contribute directly to improved component life, reduced oxidation, and enhanced overall reliability.
Predictive maintenance, oil analysis, and condition monitoring
The emergence of predictive maintenance has transformed lubrication from a reactive maintenance activity into a proactive asset management discipline. Rather than relying solely on time-based maintenance schedules, cement plants increasingly use oil analysis and condition monitoring technologies to assess equipment health continuously.
Oil analysis provides a wealth of information about both lubricant condition and machine health. Parameters such as viscosity, oxidation, contamination levels, moisture content, additive depletion, and wear particle concentrations can reveal developing problems long before equipment failure occurs. In many cases, lubrication-related abnormalities represent the earliest warning signs of impending mechanical issues.
Gaurav K Mathur says “Dust contamination remains the single biggest lubrication-related challenge affecting cement plant productivity today. Airborne silica and clinker dust penetrate bearings, gear housings, and lubrication systems, transforming lubricants from protective agents into abrasive mediums. These contaminants are often as hard as bearing steel and create a three-body abrasion mechanism that rapidly accelerates wear, especially under the high temperatures, shock loads, vibration, and continuous-duty operating conditions typical of cement plants. Poor sealing systems can increase wear rates by three to five times, leading to premature failures, rising maintenance costs, and reduced equipment life. Compounding the issue is a growing industry-wide shortage of experienced lubrication professionals, resulting in a loss of critical maintenance expertise and an increasing reliance on reactive rather than predictive maintenance.”
Reliability experts frequently describe oil analysis as a “blood test” for machinery because it provides valuable insights into internal equipment conditions without requiring disassembly. Studies suggest that every dollar invested in predictive maintenance can generate returns of five to ten dollars through avoided failures and reduced downtime.
Leading cement producers increasingly combine oil analysis with vibration monitoring, thermography, ultrasonic inspection, and digital condition monitoring platforms. This integrated approach enables maintenance teams to move from reactive maintenance to predictive asset management, reducing downtime while improving equipment lifespan and operational reliability.
Total lubrication management: a strategic approach to asset health
As reliability expectations continue to increase, many cement manufacturers are adopting Total Lubrication Management (TLM) programmes.
TLM extends beyond lubricant selection and incorporates every aspect of lubrication management, including storage, handling, contamination control, application methods, oil analysis, training, and continuous improvement.
Gaurav K Mathur, Director & Chief Executive, Global Technical Services says, “Smarter lubrication practices can significantly reduce both energy consumption and maintenance expenditure. The implementation of Total Lubrication Management (TLM), supported by careful lubricant selection, customised lubrication strategies, and robust contamination control, helps reduce friction across critical equipment and improve operational efficiency by up to 3 per cent. In energy-intensive cement plants, even marginal efficiency gains can translate into substantial cost savings. Improved lubrication practices also reduce wear, minimise overheating, extend equipment life, and lower the frequency of maintenance interventions, directly contributing to higher plant availability and lower total operating costs.”
“The most impactful innovation for the cement sector will not be a single lubricant product but the widespread adoption of Total Lubrication Management as a structured reliability framework. TLM integrates contamination control, oil analysis, condition-based maintenance, online filtration, lubricant regeneration, digital tracking, and condition monitoring into a unified system. This approach transforms lubrication from a routine maintenance activity into a strategic asset management function. The result is improved equipment reliability, reduced lubricant consumption, lower waste generation, enhanced energy efficiency, and a smaller carbon footprint. In an industry characterised by harsh operating environments and growing sustainability expectations, TLM offers a practical pathway to achieving higher reliability, improved profitability, and long-term operational sustainability” he adds.
One of the primary objectives of TLM is contamination control. Dust, moisture, and wear particles are widely recognised as the leading causes of lubricant degradation and equipment failure. Given the inherently dusty environment of cement plants, effective contamination control becomes essential for maintaining lubricant quality and equipment health. Another important component of TLM is lubricant consolidation. Many plants operate with dozens of lubricant grades, increasing inventory complexity and the risk of cross-contamination. Best-in-class lubrication programmes often reduce lubricant inventories by more than 30 per cent while simultaneously improving operational reliability.
Training also plays a critical role. Industry surveys suggest that fewer than half of lubrication technicians receive formal lubrication training. Yet organisations that invest in lubrication education consistently report lower failure rates, improved maintenance performance, and better asset utilisation. One widely cited industrial case study documented a reduction in bearing failures from nearly 400 per month to just 12 after implementing comprehensive lubrication excellence initiatives.
Supporting sustainability
Sustainability has become a central priority across the cement industry. While alternative fuels and carbon capture technologies often dominate discussions, lubrication also contributes significantly to environmental performance.
Longer-lasting lubricants reduce waste oil generation and disposal requirements. Large integrated cement plants may consume tens of thousands of litres of lubricants annually, making lubricant lifecycle management an important sustainability consideration. Extending drain intervals by even 50 per cent can substantially reduce lubricant consumption and associated environmental impacts. Improved lubrication also extends equipment life, reducing demand for replacement components and lowering the environmental footprint associated with manufacturing, transportation, and installation activities. By reducing friction and wear, lubricants enable machinery to operate more efficiently while consuming less energy.
Tribology researchers Holmberg and Erdemir estimate that advanced friction-reduction technologies could potentially reduce global carbon emissions by up to 1,460 million tonnes annually. Although this figure spans multiple industrial sectors, it
highlights the enormous sustainability potential of improved lubrication practices. For cement manufacturers pursuing net-zero ambitions, lubrication represents one of the most accessible and cost-effective tools available.
Digitalisation, automation, and smart monitoring
The future of lubrication management is increasingly digital. Smart sensors, Industrial IoT platforms, automated lubrication systems, and artificial intelligence are changing how maintenance teams manage equipment health.
Modern lubrication monitoring systems can continuously track temperature, viscosity, moisture levels, contamination levels, and lubricant condition in real time. This enables maintenance personnel to identify emerging issues before they affect production, allowing interventions to be planned rather than forced by equipment failures.
“The future of lubrication management will be defined by the integration of smart, data-driven, and automated systems powered by IoT sensors, artificial intelligence, and real-time oil condition monitoring. These technologies are enabling a shift from traditional schedule-based lubrication to predictive and prescriptive maintenance, where lubricant quantity, frequency, and selection are optimised based on actual equipment condition. The result will be near-zero unplanned downtime, lower lubricant consumption, higher equipment reliability, and improved Overall Equipment Effectiveness (OEE). As India continues to add significant cement manufacturing capacity, early adopters of intelligent lubrication technologies will gain a competitive advantage through lower operating costs, greater reliability, and stronger sustainability performance” says Dr Hegde.
Automated lubrication systems are also becoming more prevalent throughout the cement industry. By delivering precise lubricant quantities at predetermined intervals, these systems eliminate many of the inconsistencies associated with manual lubrication practices. The result is improved equipment protection, lower lubricant consumption, and enhanced reliability.
Market analysts forecast the global predictive maintenance market to exceed $50 billion by 2030, reflecting the growing importance of data-driven maintenance strategies. As digital technologies continue to mature, lubrication will become an increasingly integrated component of broader asset performance management systems.
Conclusion
As cement manufacturers pursue greater productivity, higher sustainability standards, and improved operational resilience, lubrication must be recognised as a strategic business function rather than a routine maintenance activity. The evidence is overwhelming: effective lubrication improves reliability, reduces energy consumption, extends equipment life, lowers maintenance costs, and supports sustainability objectives simultaneously.
The next frontier of cement plant optimisation will not be driven solely by larger kilns, more efficient mills, or alternative fuels. It will also be shaped by how effectively operators manage the health of their critical assets. Through advanced lubricants, predictive maintenance, oil analysis, contamination control, and Total Lubrication Management programmes, cement manufacturers can unlock substantial gains in operational performance while supporting long-term environmental and business goals.
In an increasingly competitive industry, lubrication is no longer merely about reducing friction. It is about enabling reliability, protecting profitability, and creating a foundation for sustainable growth. The plants that recognise this shift and invest in lubrication excellence today will be best positioned to meet the performance demands of tomorrow.
Trending News
-
Concrete4 weeks agoDalmia Bharat Acquires Jaiprakash Associates Cement Assets for ₹2,850 Crore
-
Concrete3 weeks agoVenus Pipes Commences Fittings Plant And Expands Seamless Capacity
-
Concrete3 weeks agoCovestro Showcases AI Material Solutions at COMPUTEX
-
Concrete3 weeks agoJK Lakshmi Advances LC3 Cement Expansion

