Economy & Market

Shaping a Low-Carbon Cement Future

Published

5 months ago

November 17, 2025

admin

ICR explores how India’s cement industry is redefining emission control through advanced filtration, digital process optimisation, and low-carbon innovation.

Cement plants emit four key pollutants—CO2, NOx, SOx, and particulate matter (PM)—each arising from different stages of production. Most CO2 stems from limestone calcination and kiln fuel combustion, and while the sector’s CO2 intensity has remained flat, it must decline by ~4 per cent annually by 2030 to align with net-zero goals, as mentioned in or a report by the IEA. In kilns, thermal NOx dominates due to high flame temperatures (~1,200°C), SO2 originates from sulphur in fuel and raw materials, and PM is released from raw mill handling and clinker grinding—as mentioned in or a report by the EEA Guidebook (2023). At the global level, cement accounts for 6 per cent to 8 per cent of total CO2 emissions, highlighting the need for integrated emission strategies, as mentioned in or a report by the GCCA. India’s installed capacity grew from ~510 MTPA (2019) to ~632 MTPA (2024), reflecting ~4.4 per cent CAGR, as mentioned in or a report by JMK Research (2024). National GHG emissions reached ~4.13 GtCO2e in 2024, with cement responsible for 6 per cent to 7 per cent, largely concentrated among top producers, as mentioned in or a report by CARE Edge ESG (2025).
India’s cement roadmap targets net-zero CO2 by 2070, with milestones tied to efficiency, alternative fuels, SCMs, and carbon capture, as mentioned in or a report by TERI (2025). Policy frameworks are evolving accordingly: Continuous Emission Monitoring Systems (CEMS) for PM, SO2, and NOx are mandated to strengthen compliance and transparency, as mentioned in or a report by the CPCB. Globally, the IEA’s Breakthrough Agenda Report (2025) emphasises that achieving real decarbonisation requires parallel progress in process control, AFR, SCMs, and CCS, since total CO2 emissions remain above 2015 levels and intensity gains have plateaued. For India, the path forward lies in combining strict regulatory oversight with accelerated technology adoption—ensuring each tonne of clinker produced moves closer to compliance, efficiency, and long-term net-zero alignment.

Modern filtration systems: The first line of defence
Cement plants are swiftly moving beyond legacy electrostatic precipitators (ESPs) to high-efficiency baghouses, hybrids, and smart filter media that achieve ultra-low particulate emissions with tighter control. India’s regulatory drive has been crucial—CPCB’s 30 mg/Nm3 PM limit (also enforced by Delhi DPCC) has accelerated retrofits and new installations, as mentioned in or a report by CPCB and DPCC. Modern systems often outperform these standards: a Thermax kiln-raw mill project guaranteed =25 mg/Nm3, while an ESP-to-baghouse conversion in Asia cut dust from 40 to 9 mg/Nm3 (—78 per cent), as mentioned in or a report by Thermax and a peer-reviewed study. Indian majors like UltraTech are scaling this approach—converting hybrid filters to pulse-jet baghouses and upgrading cooler ESPs to further reduce PM, as mentioned in or a report by the company’s environmental filings.
Performance gains now hinge on advanced filter media. Plants using ePTFE/PTFE-membrane bags achieve cleaner filtration and drops from ~50 to ~30 mg/Nm³, while maintaining stable pressure loss, as mentioned in or a report by Orient Cement’s compliance report and an ePTFE study. Nanofiber-laminated felts and electrostatically enhanced baghouses promise lower pressure drop, longer bag life, and reduced fan power, as mentioned in or a report by the US EPA baghouse compendium. Vendors like Intensiv-Filter Himenviro now offer baghouses achieving <10 mg/Nm3 under optimal design and maintenance. The trend is clear: pulse-jet baghouses with advanced membranes and selective ESP upgrades are providing India’s cement sector with the compliance flexibility, energy efficiency, and reliability needed to thrive under its tighter emission regime.

Advanced process optimisation
Digitalisation and AI-based process optimisation have emerged as key levers for emission reduction in cement manufacturing, addressing pollutants at their source rather than at the stack. Across global and Indian plants, AI-driven kiln control systems like ABB’s Expert Optimiser and Carbon Re’s AI for Pyroprocess are redefining precision by integrating real-time data from sensors and APC loops to stabilise combustion, optimise fuel use, and limit NOx and CO formation. As mentioned in or a report by ABB (2024), advanced process control has cut fuel consumption by 3 per cent to 5 per cent and CO2 emissions by up to 5 per cent, while as mentioned in or a report by Carbon Re (2024), European plants achieved 4 per cent lower fuel use and 2 per cent CO2 reduction through AI kiln optimisation.
Indian majors like UltraTech, Dalmia, and Shree Cement are piloting such hybrid models combining process, energy, and environmental data for smarter emission management.
Vijay Mishra, Commercial Director, Knauf India says, “India’s construction materials sector is making steady progress toward circularity, moving beyond the earlier focus on “green buildings” to now addressing lifecycle impacts and resource recovery. While global leaders, particularly in Europe, benefit from mature collection and recycling infrastructure for materials like gypsum, metals, and aggregates, India is still in the early stages of building that ecosystem—but the momentum and policy direction are clearly positive. The country’s massive construction pipeline presents a unique opportunity: even modest gains in material reuse and low-carbon manufacturing could yield enormous environmental benefits. The main challenge remains infrastructure—segregation at site level, recovery logistics, and recycling facilities—but as these improve, the economics of circular materials will become more compelling. Looking ahead, the next decade of emission-conscious manufacturing will be shaped by material circularity, manufacturing efficiency, and digital traceability—turning waste into value, cutting emissions at source, and ensuring every sustainable action can be measured and rewarded. For manufacturers, this balance between innovation and responsibility will define the future of India’s low-carbon construction movement.”
The benefits extend beyond combustion. Real-time monitoring and predictive analytics enable operators to anticipate emission spikes and recalibrate process parameters automatically. As mentioned in or a report by the CII–Sohrabji Godrej Green Business Centre (2023), India’s top plants operate below 70 kWh/t cement (electrical) and 690 kcal/kg clinker (thermal)—benchmarks sustained through digital oversight. Digital twins and AI-driven models now simulate NOx reduction and fuel substitution scenarios, cutting trial errors. As mentioned in or a report by the IEA (2025), digitalisation is among the top three global levers for industrial decarbonisation, capable of reducing cement CO2 emissions by up to 8 per cent by 2030. The future of emission control will depend less on end-of-pipe systems and more on intelligent, adaptive process control that keeps every second of kiln operation cleaner, stable, and efficient.

From capture to co-processing
The cement industry’s decarbonisation pathway now rests on two pivotal levers—Carbon Capture, Utilisation and Storage (CCUS) and Alternative Fuels and Raw Materials (AFR)—each addressing a distinct source of emissions. While process emissions from limestone calcination are unavoidable, CCUS provides a route to capture, reuse, or store CO2, whereas AFR mitigates combustion-related emissions by substituting fossil fuels with renewable or waste-derived alternatives. Together, they form the “dual engine” of deep decarbonisation, capable of reducing total CO2 emissions by over 40 per cent in advanced systems, as mentioned in or a report by the Global Cement and Concrete Association (GCCA, 2024). Globally, CCUS is moving from pilots to commercial reality—as mentioned in or a report by Heidelberg Materials (2024), the Brevik CCS plant in Norway will capture 400,000 tonnes of CO2 annually, while Holcim’s GO4ZERO project in Belgium aims for 1.1 million tonnes by 2029, establishing Europe as the proving ground for full-scale capture. As mentioned in or a report by TERI (2025), India is now developing its own CCUS roadmap, with Dalmia Cement and Carbon Clean partnering on a 500,000 tCO2/year project in Tamil Nadu—the country’s first commercial-scale cement CCUS initiative. Meanwhile, as mentioned in or a report by the NITI Aayog–GCCA policy brief (2024), frameworks are being designed for carbon capture finance corporations and shared storage clusters to accelerate deployment.
Raj Bagri, CEO, Kapture says, “Decarbonising cement production is crucial, but while the focus is often on the main kiln, the surrounding infrastructure, including essential diesel generators remains a source of carbon pollution. These generators provide crucial backup or primary power for on-site operations, contributing to a plant’s overall carbon footprint. Kapture addresses this with a cost- effective, easily retrofittable technology that captures CO2 directly from diesel generator exhaust. Kapture’s innovative approach transforms the captured carbon into a stable, solid byproduct. This material then closes the loop by being sequestered in concrete. By serving as a direct replacement for a portion of virgin clinker, Kapture’s. byproduct actively offsets the hard-to-abate process emissions that dominate the cement industry. This circular economy model provides a powerful solution. It immediately cuts combustion emissions from the auxiliary power source and simultaneously reduces the need for high-carbon raw materials in the concrete mix, Kapture offers the cement industry a pathway to both clean up their power and drastically lower the carbon intensity of their end-product.”
Parallel to carbon capture, the rise of AFR is redefining combustion efficiency and circularity across Indian plants. As mentioned in or a report by the CII–Sohrabji Godrej Green Business Centre (2023), India’s Thermal Substitution Rate (TSR) averages 6 per cent to 8 per cent, with leaders such as UltraTech, ACC, and Geocycle already achieving 15 per cent to 20 per cent through co-processing Refuse-Derived Fuel (RDF), biomass, and industrial waste. This transition reduces dependence on coal and petcoke while diverting thousands of tonnes of waste from landfills. The MoEFCC aims to raise TSR to 25 per cent by 2025, in line with India’s Circular Economy Action Plan, and as mentioned in or a report by the IEA (2023), such substitution can cut specific CO2 emissions by 12 per cent to 15 per cent. Although cost, scale, and infrastructure remain challenges, India’s combined progress in CCUS and AFR signals a powerful shift—toward a future where carbon is captured and reused, waste becomes a valuable fuel, and cement production evolves into a truly circular, low-emission system.

Instrumentation, data transparency, and continuous monitoring
Real-time monitoring has become central to emission management in cement manufacturing, replacing periodic sampling with Continuous Emission Monitoring Systems (CEMS) that track PM, SO2, and NOx continuously. As mentioned in or a report by the CPCB (2024), CEMS installation is now mandatory for all integrated plants in India, with live data streaming to regulatory servers for verification. These systems enhance transparency and allow operators to act before emissions exceed limits. Complementing them, IoT-based sensors for baghouse performance and draft fans are cutting downtime by up to 30 per cent, as mentioned in or a report by Frost and Sullivan (2024). Many states now mandate continuous online air-quality reporting, creating a real-time loop between regulators, operators, and technology providers. As mentioned in or a report by the GCCA (2024/25), leading producers are integrating digital emission platforms that combine CEMS data, process sensors, and ESG metrics, building both compliance and investor confidence. Globally, as mentioned in or a report by the IEA (2025), smart sensors and automated reporting can cut non-compliance events by up to 40 per cent while boosting efficiency. For India, scaling such data-driven frameworks will ensure emission control evolves from a reactive measure to a proactive, intelligence-led sustainability system.

Regulatory framework and global benchmarks
India’s cement industry operates under one of the most stringent emission control regimes among developing nations, with the Central Pollution Control Board (CPCB) setting specific stack emission limits for key pollutants—30 mg/Nm³ for particulate matter (PM), 800 mg/Nm3 for NOx, and 100 mg/Nm3 for SO2 from kiln and clinker cooler outlets, as mentioned in or a report by the CPCB (2024). These norms are comparable to the EU-Best Available Techniques (EU-BAT) reference levels, which stipulate 10–30 mg/Nm3 for PM, 200–800 mg/Nm3 for NOx, and 50–400 mg/Nm3 for SO2, depending on plant design and fuel type—as mentioned in or a report by the European Commission’s BAT Reference Document (BREF, 2023). Meanwhile, US-EPA’s National Emission Standards for Hazardous Air Pollutants (NESHAP) require PM to be maintained below 30 mg/Nm3 for new cement kilns, reinforcing global convergence toward tighter thresholds. India’s 2016 revision of cement emission norms marked a watershed moment, reducing permissible PM levels from 150 mg/Nm3 to 30 mg/Nm3, driving widespread retrofits of ESPs and installation of high-efficiency baghouses across major plants. As highlighted in a TERI policy paper (2025), nearly 80 per cent of India’s integrated cement capacity now complies with these upgraded standards, supported by Continuous Emission Monitoring Systems (CEMS) and regular digital reporting to state pollution control boards—placing India’s emission control framework among the most advanced and transparent in the Global South.

Building a low-emission, high-performance industry
India’s cement sector stands at a defining crossroads—where growth and sustainability must advance together. With production projected to exceed 600 million tonnes by 2028, as mentioned in or a report by JMK Research (2024), India’s leadership in emission control will shape global low-carbon manufacturing. Over the past decade, regulatory reform, CPCB’s 30 mg/Nm3 PM limits, continuous monitoring, and ESP-to-baghouse conversions have brought India close to EU and US benchmarks. The next leap requires integrated decarbonisation—linking AI-driven optimisation, renewable energy, alternative fuels, and carbon capture. As mentioned in or a report by the IEA (2025), digital technologies can reduce CO2 emissions by up to 8 per cent by 2030, while CCUS and AFR could cut process-related emissions by 40 per cent to 50 per cent. Meanwhile, R&D in LC³ and belite cements, combined with circular-economy co-processing, is reshaping both the chemistry and carbon profile of Indian cement. Policy incentives, carbon finance, and strong industry–academia collaboration will be key to making India a pioneer in green cement.
Ultimately, emission control is becoming a strategic advantage, not just compliance. The future cement plant will be a hybrid of automation, accountability, and adaptive design, where digital twins optimise processes and every gram of carbon is tracked. By coupling robust policy frameworks with investment in skills, digital infrastructure, and collaborative innovation, India can redefine sustainable heavy industry. The goal now is not incremental change but transformational adoption, where every avoided emission strengthens both the planet and profitability. With its evolving ecosystem of technology, regulation, and intent, India’s cement sector is poised to become a global benchmark for low-emission, high-performance manufacturing and a model for industrial decarbonisation.

Carbon Emissions in Ready-Mix Concrete

This case study, published in Case Studies in Construction Materials (Elsevier, Jan 2025) by Zuojiang Lin, Guangyao Lyu, and Kuizhen Fang, examines carbon emissions in C30–C80 ready-mix concrete in China and explores CO2 reduction through SCMs, transport optimisation, and manufactured sand use.

This study analyses the carbon emissions of C30–C80 ready-mixed concrete using a large-scale mix proportion dataset from across China. The research applies a life-cycle assessment (LCA) based on IPCC and ISO 14040 standards to calculate total emissions, covering raw material production, transportation, manufacturing, and concrete delivery. The findings reveal that average carbon emissions range between 262.61 and 401.78 kgCO2e/m3, with cement accounting for about 90 per cent of embodied emissions. The study establishes that emission variations primarily arise from differences in cement dosage and raw material composition rather than energy use in manufacturing or transport.
The study identifies Supplementary Cementitious Materials (SCMs)—such as fly ash, ground granulated blast furnace slag, and silica fume—as major contributors to CO2 reduction. By partially replacing cement, SCMs lowered total emissions by 5 per cent to 30 per cent while maintaining equivalent strength levels. However, around 11 per cent of samples showed negative reduction rates, indicating that improper SCM selection or inconsistent material quality can offset benefits. The relationship between SCM substitution rates and CO2 reduction was found to be positively correlated but weakly linear, with considerable data dispersion due to mix variability.
Transport distance was also evaluated as a significant but secondary factor influencing emissions. The study found that CO2 reduction benefits from SCMs remained stable until transport distances exceeded 4166 km, beyond which the gains were nullified. For every additional 100 km of SCM transport by truck, the carbon reduction rate decreased by only 0.45 per cent. Comparatively, long-distance transport of aggregates from 100 km to 500 km increased concrete’s carbon emissions by over 10 per cent. This highlights the higher sensitivity of total emissions to aggregate logistics than SCM transport.
Lastly, the study analysed manufactured sand (MS) as a substitute for natural fine aggregates (NFA). While MS reduces transport-related emissions due to shorter sourcing distances, it increases total production energy consumption and can reduce concrete strength. When 50 per cent to 100 per cent of NFA was replaced with MS, total CO2 emissions remained largely unchanged. The authors conclude that SCMs offer clear and stable low-carbon benefits, whereas MS requires technological optimisation to realise its potential. Overall, the research provides quantitative evidence supporting low-carbon labelling standards for China’s concrete industry and underscores the importance of balancing strength, sourcing, and sustainability.

Reducing CO2 in Cement Production

This case study, published in Industrial & Engineering Chemistry Research (ACS Publications, Sept 2024) by Franco Williams and Aidong Yang, investigates CO2 reduction in cement manufacturing through alternative clinker compositions and CO2 mineralisation, achieving up to 45.5 per cent energy and 35.1 per cent CO2 savings in simulations.

This study investigates strategies for reducing CO2 emissions in cement production, which currently contributes around 8 per cent of global anthropogenic CO2. Using Aspen Plus V12.1 process simulations, seven clinker production scenarios were analysed — including Ordinary Portland Cement (OPC), three variants of High-Ferrite Clinker (HFC), Belite-Ye’elimite-Ferrite Clinker (BYF), Calcium Silicate Cement (CSC), and a hybrid option combining OPC with a Supplementary Cementitious Material (SCM) produced via CO2 mineralisation. The objective was to quantify differences in energy demand and CO2 emissions under natural gas–fuelled conditions and assess the decarbonisation potential of each composition.
The simulations revealed that alternative clinkers significantly outperform OPC in both energy efficiency and carbon footprint. OPC clinker production required 1220.4 kWh/t, emitting 741.5 kgCO2/t clinker, while CSC clinker achieved the lowest total energy intensity at 665.1 kWh/t, corresponding to a 45.5 per cent energy reduction and 35.1 per cent CO2 reduction. This efficiency stems from CSC’s low CaCO3 input (989.7 kg/t clinker) and sintering temperature of 1250°C, compared to OPC’s 1271.5 kg/t and 1500°C. The BYF clinker followed with 31.3 per cent energy savings and 27.5 per cent CO2 reduction, while HFC variants achieved moderate reductions of 3.1 per cent to 6.4 per cent in CO2 emissions.
For the SCM + OPC scenario, 25 per cent of the clinker was replaced with SCM derived from CO2 mineralisation. Despite a higher total energy requirement (1239.6 kWh/t) due to capture and mineralisation energy, this option delivered the greatest CO2 reduction—up to 44.8 per cent relative to OPC. The benefit was attributed to CO2 absorption during mineralisation and reduced clinker mass. However, the study noted that the energy intensity of mineralisation (1.30 kWh/kg SCM) exceeded that of clinker production (1.22 kWh/kg), indicating that this strategy’s effectiveness depends on access to low-carbon electricity sources.
Geographical variations also influenced the overall carbon footprint. When accounting for electricity grid emissions, Brazil showed the lowest total CO2 output (482.7 kgCO2/t) for SCM-integrated cement due to its green energy mix, compared to 601.6 kgCO2/t in China and 556.1 kgCO2/t in the United States. For CSC clinker, total reductions were 35.7 per cent, 36.0 per cent, and 35.3 per cent respectively across these countries. This emphasises that decarbonisation gains are highly dependent on the carbon intensity of local power grids.
Supporting simulations demonstrated that lowering sintering temperatures alone (to 1350°C or 1250°C) could reduce total energy consumption by 7 per cent to 17.5 per cent and CO2 emissions by 1 per cent to 2.6 per cent. However, these results are modest compared to the full compositional changes in alternative clinkers, confirming that reducing CaCO3 content in the raw meal contributes more significantly to CO2 mitigation. The decomposition of CaCO3 releases 0.44 kg CO2 per kg CaCO3 and requires 179.4 kJ/kmol of heat; hence, formulations with reduced limestone and alite (C3S) contents inherently lower both emissions and energy demand.
In conclusion, the study establishes that Calcium Silicate Cement (CSC) is the most energy-efficient clinker alternative, while SCM-integrated OPC achieves the highest CO2 reduction potential under green-energy conditions. The authors highlight that the decarbonisation of electricity supply is crucial for maximising the benefits of CO2 mineralisation-based SCMs. These results underscore that altering clinker chemistry and incorporating CO2 utilisation pathways are practical, high-impact strategies for achieving deep decarbonisation in the cement industry and align with global net-zero goals.

Up Next

The 3Cs of Decarbonisation

Don't Miss

A Legal Push for Low-Carbon Cement

Economy & Market

SEW-EURODRIVE India Opens Drive Technology Centre in Chennai

Published

2 weeks ago

March 25, 2026

admin

The new facility strengthens SEW-EURODRIVE India’s manufacturing, assembly and service capabilities

SEW-EURODRIVE India has inaugurated a new Drive Technology Centre (DTC) in Chennai, marking a significant expansion of its manufacturing and service infrastructure in South India. The facility is positioned to enhance the company’s responsiveness and long-term support capabilities for customers across southern and eastern regions of the country.

Built across 12.27 acres, the facility includes a 21,350-square-metre assembly and service setup designed to support future industrial growth, evolving application requirements and capacity expansion. The centre reflects the company’s long-term strategy in India, combining global engineering practices with local manufacturing and service capabilities.

The new facility has been developed in line with green building standards and incorporates sustainable features such as natural daylight utilisation, solar power generation and rainwater harvesting systems. The company has also implemented energy-efficient construction and advanced climate control systems that help reduce shopfloor temperatures by up to 3°C, improving production stability, product quality and working conditions.

A key highlight of the centre is the 15,000-square-metre assembly shop, which features digitisation-ready assembly cells based on a single-piece flow manufacturing concept. The facility also houses SEW-EURODRIVE India’s first semi-automated painting booth, aimed at ensuring uniform surface finish and improving production throughput.

With the commissioning of the Chennai Drive Technology Centre, SEW-EURODRIVE India continues to strengthen its manufacturing footprint and reinforces its long-term commitment to supporting industrial growth and automation development in India.

Concrete

Material Flow Efficiency

Published

3 weeks ago

March 18, 2026

admin

We explore how material handling systems are becoming strategic assets in cement plants, enabling efficient movement of raw materials, clinker and finished cement. Advanced conveying, automation and digital technologies are improving plant productivity while supporting energy efficiency and sustainability goals.

Material handling systems form the operational backbone of cement plants, enabling the efficient movement of raw materials, clinker and finished cement across complex production networks. With India’s cement industry producing over 391 million tonnes of cement in FY2024 and possessing an installed capacity of around 668 mtpa, according to the CRISIL Research Industry Report, 2025, efficient material logistics have become critical to maintaining plant productivity and cost competitiveness. At the same time, cement production is highly energy intensive and contributes around 7 per cent to
8 per cent of global CO2 emissions, making efficient material flow and logistics optimisation essential for reducing operational inefficiencies and emissions states the International Energy Agency Cement Technology Roadmap, 2023. As plants scale capacity and integrate digital technologies, modern material handling systems, ranging from automated conveyors to intelligent stockyards, are increasingly recognised as strategic assets that influence plant stability, energy efficiency and environmental performance.

Strategic role of material handling
Material handling is no longer viewed as a secondary utility within cement plants; it is now recognised as a strategic system that directly influences production efficiency and process stability.
Cement manufacturing involves the continuous movement of large volumes of limestone, clay, additives, clinker and finished cement across multiple production stages. Even minor disruptions in conveying systems or storage infrastructure can lead to kiln feed fluctuations, production delays and significant financial losses. According to Indian Cement Industry Operational Benchmarking Study, 2024, unplanned downtime in large integrated cement plants can cost between Rs.15–20 lakh per hour, highlighting the economic importance of reliable material handling systems.
Modern cement plants are therefore investing in advanced mechanical handling systems designed for high throughput and operational reliability. Large integrated plants can process over 10,000 tonnes per day of clinker, requiring highly efficient conveying systems and automated stockyards to maintain continuous material flow, suggests the International Cement Review Industry Analysis, 2024. Efficient material handling also reduces spillage, minimises dust emissions and improves workplace safety. As cement plants become larger and more technologically advanced, the role of material handling is evolving from simple transport infrastructure to a critical operational system that supports both productivity and sustainability.

From quarry to plant
The transport of raw materials from quarry to processing plant represents one of the most energy-intensive stages of cement production. Traditionally, limestone and other raw materials were transported using diesel-powered trucks, which resulted in high fuel consumption, dust generation and increased operational costs. However, modern plants are increasingly adopting long-distance belt conveyors and pipe conveyors as a more efficient alternative. These systems allow continuous material transport over distances of 10–15 kilometres, significantly reducing fuel consumption and operating costs while improving environmental performance, states the FLSmidth Cement Industry Technology Report, 2024.
Milind Khangan, Marketing Manager, Vertex Market Research & Consulting, says, “Efficient and enclosed handling of fine materials such as cement, fly ash and slag requires modern pneumatic conveying systems. By optimising the air-to-material ratio, these systems can reduce energy consumption by 10 per cent to 15 per cent while ensuring smooth material flow. Closed-loop conveying further minimises dust loading and improves the performance of bag filters, supporting cleaner plant operations. In addition, flow-regulated conveying lines help prevent clogging and maintain reliable dispatch performance. Overall, automation in pneumatic conveying delivers immediate operational benefits, including improved equipment uptime, lower energy use, reduced material spillage and more stable kiln and mill performance.”
Pipe conveyor systems are particularly gaining traction because they provide a completely enclosed transport system that prevents material spillage and dust emissions. According to global cement engineering studies, conveyor-based transport can reduce energy consumption by up to 30 per cent compared to truck haulage, while also improving operational reliability. Several cement plants in India have already implemented such systems to stabilise quarry-to-plant logistics while reducing carbon emissions associated with diesel transport.

Stockyard management and homogenisation
Stockyards play a critical role in maintaining raw material consistency and stabilising kiln feed quality. Modern cement plants use advanced stacker and reclaimer systems to ensure efficient storage and blending of raw materials before they enter the grinding and pyroprocessing stages. Automated stacking methods such as chevron or windrow stacking enable uniform distribution of materials, while bridge-type or portal reclaimers ensure consistent extraction during kiln feed preparation. These systems are essential for maintaining stable chemical composition of raw meal, which directly influences kiln efficiency and clinker quality. The Cement Plant Operations Handbook, 2024 indicates that advanced homogenisation systems can reduce raw mix variability by up to 50 per cent, significantly improving kiln stability and energy efficiency. Integrated stockyard management systems also incorporate sensors for monitoring bulk density, moisture levels and stockpile volumes, enabling real-time control over material blending processes.

Clinker and cement conveying technologies
Once clinker is produced in the kiln, it must be efficiently transported to storage silos and subsequently to grinding and packing units. Modern cement plants rely on high-capacity belt conveyors, bucket elevators and pneumatic conveying systems to manage this stage of material flow. Steel-cord belt bucket elevators are now capable of lifting materials to heights exceeding 120 metres with capacities reaching 1,500 tonnes per hour, making them suitable for large-scale clinker production lines, states the European Cement Engineering Association Technical Paper, 2023.
For fine materials such as cement, fly ash and slag, pneumatic conveying systems provide a reliable and dust-free solution. These systems transport powdered materials using controlled airflow, ensuring enclosed and contamination-free movement between grinding units, silos and packing stations. Optimised pneumatic systems can reduce energy consumption by 10 per cent to 15 per cent compared to older conveying technologies, while also improving plant cleanliness and environmental compliance, according to the Global Cement Technology Review, 2024.

Automation and digitalisation
Digitalisation is transforming material handling systems by introducing real-time monitoring, predictive maintenance and automated control. Advanced sensors and Industrial Internet of Things (IIoT) platforms enable plant operators to track conveyor health, stockpile levels and equipment performance in real time. Predictive maintenance systems analyse vibration patterns, temperature fluctuations and equipment load data to detect potential failures before they occur. According to McKinsey’s Industry 4.0 Manufacturing Report, 2023, for heavy industries, digital monitoring and predictive maintenance technologies can reduce equipment downtime by up to 30 per cent and increase productivity by 10 per cent to 15 per cent. Digital control centres also integrate data from conveyors, stacker reclaimers and dispatch systems, enabling centralised management of material flows from quarry to dispatch.

Handling of AFR
The growing adoption of Alternative Fuels and Raw Materials (AFR) has introduced new challenges and opportunities for material handling systems in cement plants. AFR materials such as refuse-derived fuel (RDF), biomass and industrial waste often have irregular particle sizes, variable moisture content and lower bulk density compared to conventional fuels. As a result, specialised storage, dosing and feeding systems are required to ensure consistent kiln combustion. According to the Cement Sector Decarbonisation Roadmap published by NITI Aayog in 2026, increasing the use of AFR could enable India’s cement sector to achieve thermal substitution rates of around 20 per cent in the coming decades. To support this transition, plants are investing in automated receiving stations, shredding units, drying systems and precision dosing equipment to stabilise AFR supply and combustion performance.

Energy efficiency and dust control
Material handling systems also play a crucial role in improving plant energy efficiency and environmental performance. Modern conveyor systems equipped with variable speed drives and energy-efficient motors can significantly reduce electricity consumption. Permanent magnet motors used in conveyor drives can deliver 8 per cent to 12 per cent energy savings compared to conventional induction motors, improving overall plant energy efficiency according to the IEA Industrial Energy Efficiency Study, 2023. Dust control is another major concern in cement plants, particularly during material transfer and storage operations. Enclosed conveyors, dust extraction systems and advanced bag filters are widely used to minimise particulate emissions and improve workplace safety.

Future trends in material handling
The future of material handling in cement plants will be shaped by automation, digitalisation and sustainability considerations. Emerging technologies such as AI-driven logistics optimisation, autonomous mobile equipment and digital twins are expected to further improve plant efficiency and operational visibility. Digital twin models allow engineers to simulate material flow patterns, optimise stockyard operations and predict equipment performance under different operating conditions. According to the International Energy Agency Digitalisation and Energy Report, 2024, the adoption of advanced digital technologies could improve industrial energy efficiency by up to 20 per cent in heavy industries such as cement manufacturing. As cement plants expand capacity and adopt low-carbon technologies, intelligent material handling systems will play a critical role in maintaining productivity and reducing environmental impact.

Conclusion
Material handling systems have evolved from basic transport infrastructure into strategic operational systems that directly influence plant efficiency, reliability and sustainability. From quarry transport and automated stockyards to digital dispatch platforms and advanced conveying technologies, modern material handling solutions enable cement plants to manage large production volumes while maintaining process stability.
As India’s cement industry continues to expand to meet infrastructure and urban development demands, investments in advanced material handling technologies will become increasingly important. By integrating automation, digital monitoring and energy-efficient systems, cement manufacturers can improve operational performance while supporting the industry’s long-term sustainability and decarbonisation goals.

Kanika Mathur

Concrete

Modernise to Optimise

Published

3 weeks ago

March 18, 2026

admin

Cement plant modernisation is reshaping the industry through upgrades in
kilns, energy systems, digitalisation, AFR integration and advanced material
handling. We explore these technologies that improve efficiency, reduce
emissions, strengthen competitiveness, while preparing the industry for India’s
next phase of infrastructure growth.

India’s cement industry, the world’s second-largest, is undergoing a rapid transformation driven by infrastructure demand, decarbonisation targets and technological advancement. The sector’s installed capacity stood at approximately 668 million tonnes per annum (mtpa) in FY2025 and is projected to reach 915–925 mtap by 2030, supported by large-scale capacity expansions and infrastructure investment cycles, suggests CRISIL Intelligence Industry Report, 2025. At the same time, cement production remains highly energy intensive and contributes about 6 per cent to 7 per cent of India’s total greenhouse gas emissions, making efficiency improvements and modernisation critical for long-term sustainability as stated in CareEdge ESG Research, 2025. As a result, cement manufacturers are investing in advanced kiln technologies, digital monitoring systems, waste heat recovery, alternative fuels, and modern material handling infrastructure to enhance productivity while aligning with global decarbonisation pathways.

Need for modernisation
The need for plant modernisation is closely linked to the sector’s rapid capacity expansion and rising operational complexity. India’s installed cement capacity has grown significantly in the last decade and is expected to exceed 900 mtpa by 2030, driven by demand from housing, infrastructure and urban development projects, as per the CRISIL Intelligence Industry Report, 2025. However, increasing scale also places pressure on energy efficiency, logistics, and production stability. The report also suggests that the cement plants must upgrade equipment and processes to operate at higher utilisation rates, which are projected to reach 75 per cent to 77 per cent by the end of the decade, compared to around 72 per cent to 74 per cent in FY2026.
Environmental imperatives are another major driver of modernisation. Cement manufacturing is responsible for a significant share of industrial emissions because clinker production requires high-temperature processes that depend heavily on fossil fuels. According to CareEdge ESG research, the cement sector contributes 6–7 per cent of India’s total greenhouse gas emissions, with approximately 97 per cent of emissions arising from direct fuel combustion and process emissions in kilns. Consequently, plant modernisation initiatives now focus not only on productivity improvements but also on reducing emissions intensity, energy consumption, and reliance on conventional fuels.
“One of the most impactful upgrades implemented at Shree Cement in the last five years has been the adoption of advanced data management platforms that provide real-time visibility across major process areas. This digital advancement has strengthened plant automation by enabling faster and more accurate responses to process variations while improving the reliability of control loops. Real-time dashboards, integrated analytics and automated alerts now support quicker, data-driven decision-making, helping optimise kiln and mill performance, improve energy control and detect deviations early. By consolidating data from multiple systems into a unified digital environment, the company has enhanced operational consistency, reduced downtime and improved both productivity and compliance. This shift towards intelligent automation and real-time data management has become a key driver of operational excellence and future-ready plant management,” says Satish Maheshwari, Chief Manufacturing Officer, Shree Cement.

Kiln and pyroprocessing upgradation
The kiln remains the technological heart of cement manufacturing, and modernisation efforts often begin with upgrades to pyroprocessing systems. Many older plants in India operate with four- or five-stage preheaters, while modern plants increasingly adopt six-stage preheater and pre-calciner systems that significantly improve heat efficiency and clinker output. These systems enhance heat transfer, reduce fuel consumption, and stabilise kiln operations under high throughput conditions.
Professor Procyon Mukherjee suggests, “Cement manufacturing is, at its core, a thermal process. The rotary kiln and calciner together account for energy consumption and emissions. The theoretical thermal requirement for clinker production is around 1700–1800 MJ per tonne, yet real-world plants often operate far above this benchmark due to inefficiencies in combustion, heat recovery and material flow. Modernisation, therefore, must begin with the
kiln system, and not peripheral automation or
isolated upgrades. The shift from wet to dry process kilns, combined with multi-stage preheaters and precalciners, has already delivered step-change improvements, making dry kilns nearly 50 per cent more energy efficient.”
Recent investment programmes across the industry have included kiln cooler upgrades, advanced burners, and improved refractory materials designed to increase operational reliability and reduce specific heat consumption. Such upgrades are essential because cement production remains highly energy intensive, and continuous efficiency improvements are required to meet global decarbonisation targets. According to the International Energy Agency (IEA) Cement Tracking Report, 2023, the cement sector must achieve annual emissions intensity reductions of around 4 per cent through 2030 to align with global net-zero scenarios.

Energy efficiency and WHRS
Energy efficiency remains one of the most important areas of modernisation in cement manufacturing, given the sector’s heavy reliance on thermal and electrical energy. Modern plants deploy advanced process controls, efficient grinding systems, and improved combustion technologies to reduce specific energy consumption. The adoption of energy-efficient technologies is particularly important in India, where energy costs account for a large share of production expenses. As demand grows and plants expand capacity, improving energy performance becomes essential to maintain competitiveness.
Waste Heat Recovery Systems (WHRS) have emerged as a key solution for improving plant energy efficiency. During cement production, large volumes of high-temperature gases are released from kilns and coolers. WHRS technology captures this waste heat and converts it into electricity, thereby reducing reliance on external power sources. According to energy benchmarking studies for the Indian cement industry, installed waste heat recovery capacity in the sector has reached approximately 840 MW, with an additional potential of around 500 MW states the Green Business Centre, Energy Benchmarking Report, 2023. Several leading producers have already implemented large WHRS installations; for example, UltraTech Cement has deployed systems with around 121 MW of waste heat recovery capacity, reducing carbon emissions by nearly 0.5 million tonnes annually according to the Energy Alternatives India Case Study, 2024.

Integration of AFR
The integration of Alternative Fuels and Raw Materials (AFR) is another critical dimension of cement plant modernisation. AFR refers to the use of industrial waste, biomass, refuse-derived fuel (RDF), and other non-fossil materials as substitutes for conventional fuels such as coal and petcoke. Increasing the use of AFR helps reduce fossil fuel consumption while simultaneously addressing waste management challenges. According to the NITI Aayog Decarbonisation Roadmap, 2026, scaling the use of RDF and other alternative fuels could enable the sector to achieve thermal substitution rates of around 20 per cent in the coming decades.
However, integrating AFR requires significant plant modifications and operational adjustments. Waste-derived fuels often have inconsistent calorific values, higher moisture content, and heterogeneous physical properties compared to traditional fuels. As a result, modern plants invest in advanced fuel preparation systems, dedicated feeding equipment, and automated dosing technologies to ensure stable kiln operation. These upgrades allow plants to maintain consistent clinker quality while increasing the share of alternative fuels in their energy mix.

Digitalisation and smart plant operations
Digitalisation is rapidly transforming cement plant operations by enabling data-driven decision-making and predictive maintenance. Industry 4.0 technologies such as IoT sensors, artificial intelligence (AI), and advanced analytics are now used to monitor equipment performance, optimise process parameters, and anticipate maintenance requirements. These digital tools enable plant operators to detect early signs of equipment failure, minimise unplanned downtime, and improve operational efficiency. Predictive maintenance systems, for example, analyse vibration, temperature, and acoustic signals from rotating equipment to identify potential faults
before they escalate into major breakdowns. Digital twins and integrated control systems further allow operators to simulate plant performance under different scenarios and optimise production strategies. Such technologies are becoming increasingly important as cement plants operate at larger scales and higher levels of process complexity.
Maheshwari also adds, “Plant modernisation is also increasingly central to the global competitiveness of Indian cement manufacturers. As cost pressures rise across energy, logistics and regulatory compliance, modern plants offer the structural efficiency required to operate reliably and competitively over the long term. Technologies such as AI-driven Advanced Process Control (APC) integrated with real-time data systems are emerging as essential investments for the future. These platforms use predictive algorithms, machine learning and live process inputs to optimise kiln, mill and utility operations with greater precision than traditional control systems. By continuously analysing variations in feed chemistry, temperature profiles, energy demand and equipment behaviour, APC enables stable operations, lower specific energy consumption, reduced emissions and improved product consistency. As regulatory expectations tighten and plants pursue higher efficiency with lower carbon intensity, AI-enabled APC will play a crucial role in strengthening automation, enhancing decision-making and ensuring long-term operational resilience.”

Modern material handling and logistics
Material handling systems play a critical role in ensuring smooth plant operations and efficient logistics. Modern cement plants rely on advanced conveying systems, automated stockyards, and digital dispatch platforms to manage the movement of raw materials, clinker, and finished cement. Long-distance belt conveyors and pipe conveyors are increasingly replacing truck-based transport between quarries and plants, reducing fuel consumption, dust emissions, and operational costs. Automated stacker-reclaimers ensure consistent blending of raw materials,
which improves kiln stability and clinker quality. Meanwhile, advanced packing and dispatch systems equipped with high-speed rotary packers and robotic palletisers enhance throughput and reduce manual labour. These technologies allow cement plants to optimise logistics efficiency while supporting higher production capacities.

Emission control and environmental compliance
Environmental compliance has become a central focus of cement plant modernisation as regulators and investors place greater emphasis on sustainability performance. Modern plants deploy advanced emission control technologies such as high-efficiency bag filters, electrostatic precipitators, and selective non-catalytic reduction systems to reduce particulate matter and nitrogen oxide emissions.
Sine Bogh Skaarup, Vice President, Head of Green Innovation and R&D, Fuller Technologies says, “One of our key focus areas is decarbonisation. We help cement producers reduce CO2 and overall carbon emissions. We offer alternative fuel solutions and calcined clay technologies to enable the production of LC3 cement, which play a significant role in decarbonising the cement industry. By combining alternative fuels and calcined clay solutions, CO2 emissions can be reduced by up to 50 per cent, making this a highly impactful approach for sustainable cement production.”
Continuous emission monitoring systems are increasingly used to track environmental performance in real time and ensure compliance with regulatory standards. In addition to air pollution control, cement companies are also investing in water recycling systems, renewable energy integration, and carbon reduction initiatives. These measures are essential for aligning the sector with national climate goals and improving the environmental footprint of
cement manufacturing.

Economic benefits and future outlook
Beyond environmental and operational advantages, cement plant modernisation also delivers significant economic benefits. Energy efficiency improvements, digital process optimisation, and advanced material handling systems reduce operating costs and improve asset utilisation. Waste heat recovery and alternative fuels help lower fuel expenditure and reduce exposure to volatile fossil fuel markets. As the industry expands capacity to meet growing demand, modernised plants are better positioned to achieve higher productivity and maintain profitability. The long-term outlook for the sector remains positive, with India expected to continue large-scale infrastructure investments in roads, housing, railways, and urban development.
Milan R Trivedi, Vice President – Projects, Prod & QC, MR, Shree Digvijay Cement, says, “The main focus in case of modernisation projects drives through the investment decision, which is mainly based on IRR and impact on overall efficiency improvement, cost optimisation and improvement in reliability. However, there are certain modernisation, which has high impact on environmental impact, statutory requirements, etc. has higher priority irrespective of ROI or payback period.”
“The energy efficiency and reliability investment projects generally provide fast return on investment whereas strategic, digitalisation and environmental investment projects provide long term and compounded benefits. Typical modernisation investment projects are decided with IRR of about > 20 per cent, payback period of typically 2-3 years for fast-track projects,” he adds.
In this context, modernisation will remain a key strategic priority for cement manufacturers seeking to maintain competitiveness in an increasingly sustainability-focused market.

Conclusion
The modernisation of cement plants is no longer a purely technical upgrade but a strategic transformation that reshapes how the industry operates. As India’s cement sector expands capacity toward the next growth cycle, improvements in energy efficiency, digitalisation, alternative fuels and advanced logistics will determine the competitiveness of individual plants. Modern technologies allow producers to operate at higher productivity levels while simultaneously reducing energy consumption and emissions intensity.
Looking ahead, the pace of technological adoption will play a decisive role in shaping the future of
the cement industry. Companies that successfully integrate modern equipment, digital systems, and sustainable production practices will be better positioned to meet rising infrastructure demand while aligning with global climate commitments. In this evolving landscape, plant modernisation stands as the cornerstone of both operational excellence and environmental responsibility.