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Bridging the Skill Gap in Manufacturing

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Dr SB Hegde analyses the changing trend in the cement industry as it faces a growing skill gap as ageing workers retire and new talent turns away, threatening efficiency and sustainability.

Cement is the backbone of roads, buildings and cities worldwide. In 2023, the world produced 4.1 billion tonnes of cement, and that number could grow to 4.7 billion tonnes by 2030 (US Geological Survey, 2024). However, there’s a big problem — the cement workforce is ageing and not enough young workers have the skills to operate modern machines or meet new environmental standards. This skill gap — the difference between what the industry needs and what workers can do — is growing quickly. It’s a hidden threat that could slow down construction projects and
hurt economies.
Cement drives development worldwide, but countries like India are feeling the pressure the most. In 2022, India produced 410 million tonnes of cement, making it the second-largest producer after China (Statista, 2024a). With major infrastructure plans for roads and railways, India needs skilled workers more than ever. However, many cement plants are struggling to find workers who understand modern tools or environmentally friendly methods.
This article explores why this skill gap exists, how it impacts the industry, and what can be done to fix it—both globally and in India. With updated statistics and real-world examples, it sends a clear message: cement companies must take action before the problem gets worse.

The hidden crisis
The skill gap in the cement industry is a growing problem that’s not always easy to see. Across the world, experienced workers who have spent decades mastering cement production are retiring. A 2023 report shows that 30 per cent of them are over 50, and new workers aren’t stepping in fast enough, especially in Europe and the US (World Cement Association, 2024).
At the same time, cement plants are becoming more advanced, using technology like smart sensors, automated systems and robots. These systems require workers with technical and computer skills—not just physical strength and basic knowledge.
India is also feeling the heat. With the capacity to produce 690 million tonnes of cement yearly, the industry employs over 1 million people (IBEF, 2024). But according to a 2024 study, 65 per cent of plant managers report not having enough skilled workers to handle modern machinery (CII, 2024). This problem is even worse in southern India, where too many plants compete for limited talent, and low wages push skilled workers to better-paying city jobs.
This skill shortage affects the industry in several ways:

  • Higher maintenance costs: Without skilled workers, machines break down more often.
  • Reduced cement quality: Poorly operated machinery affects the consistency and quality of cement.
  • Increased production costs: Inefficiencies lead to higher operational costs.

The crisis is reshaping how cement is made and forcing companies to rethink their strategies. If the industry doesn’t tackle this problem soon, it could face severe setbacks in productivity, quality and profitability.

From skill to crisis
Cement production used to rely heavily on hands-on skills. Workers learned through experience—breaking rocks, firing kilns and mixing materials. But today, machines handle most of that work. Around 80 per cent of the world’s cement now comes from dry processes, which require less labour but more technical expertise (Rhodium Group, 2024).
The older generation of workers, who mastered traditional methods, often struggle to adapt to modern systems. Meanwhile, younger workers are not being trained quickly enough to fill the gap. This shift is making the industry less efficient and more vulnerable.
India is a prime example of this transformation. Small cement plants once thrived on local skills and traditional methods. But now, large companies like UltraTech, which produces 79 million tonnes of cement annually, are using advanced technologies like waste heat recovery systems (WHRS) to save energy and reduce emissions (IBEF, 2024).
However, a 2023 survey by the National Skill Development Corporation (NSDC) revealed that only 20 per cent of cement workers in India are capable of handling these modern systems (NSDC, 2024). This lack of expertise leads to several problems:

  • Inefficiencies in production: Poorly operated technology slows down manufacturing.
  • Reduced sustainability efforts: Without skilled workers, eco-friendly systems like WHRS are not fully effective.
  • Higher operating costs: More downtime and maintenance result from improper handling of equipment.

The old craftsmanship is fading, leaving the industry at a crossroads. Without immediate action, this skill shortage could severely impact cement production’s ability to meet growing demands and adopt sustainable practices.

Technology’s double-edged sword
Technology is both a solution and a challenge for the cement industry. Around the world, new tech is making cement production faster, cleaner and more efficient. For example, Cemex tested solar-powered cement in 2023, aiming for eco-friendly production, while Heidelberg invested €450 million in carbon capture technology in Belgium (World Cement Association, 2024). These innovations are part of why the global cement market could reach $686 billion by 2032 (Fortune Business Insights, 2025).
However, the catch is that these high-tech solutions require skilled workers who understand how to operate and maintain advanced systems—not just traditional manual labour.
India is also riding the wave of automation. Cement plants are now getting 20–25 per cent of their power from WHRS, which save energy and reduce costs (World Cement, 2025). When Adani acquired Sanghi Industries for $606.5 million in 2023, it added more advanced technology to its operations. But the problem remains: local workers often lack the skills needed to handle this new machinery effectively.
While technological advancements have helped India produce 375 million tonnes of cement in 2023, they are also creating a divide within the workforce. The industry is splitting into two groups:

  • Tech-savvy workers: A small group trained to handle automation, digital systems and advanced equipment.
  • Traditional workers: A much larger group lacking the skills needed to work with modern technology.

This divide leads to several challenges:

  • Underutilised technology: Many high-tech systems are not fully used due to a lack of trained operators.
  • Increased operational costs: Companies spend more on training and maintenance when technology is poorly managed.
  • Job insecurity: As automation grows, workers with outdated skills face the risk of being left behind.

The cement industry must find a balance between adopting new technologies and ensuring workers have the skills to operate them effectively. Without doing so, the push for efficiency and sustainability could leave a large part of the workforce struggling to keep up.

Why is the young talent avoiding the cement industry?
Young people are not interested in working in the cement industry. Globally, only about 5 per cent of engineering graduates from the US and Europe consider manufacturing jobs, according to a 2023 report (McKinsey, 2023). They see cement jobs as dirty, boring and outdated compared to high-paying tech jobs with modern offices and exciting projects.
India faces the same problem. Although the cement industry contributes around 6 per cent to the country’s economy, it struggles to attract fresh talent. In 2023, the IT sector hired 1.5 million graduates, while the cement industry managed to recruit only about 50,000 (NSDC, 2024). Cities like Bengaluru, known for their booming tech hubs, lure young engineers who prefer coding jobs over working in hot, dusty cement plants in places like Rajasthan.
The perception problem is real. A 2024 survey revealed that 70 per cent of Indian engineering students described cement work as ‘dull’ and ‘unappealing,’ even though starting salaries can be quite competitive, ranging from `8 to Rs.12 lakh per year (CII, 2024). They don’t see cement as a modern, innovative field with growth opportunities.

Beyond the factory floor
The skill shortage in the cement industry isn’t just a factory problem—it’s a major issue for big construction projects worldwide. When cement plants struggle to find skilled workers, everything slows down, causing costly delays.
In the US, the $1.2 trillion infrastructure plan aimed at upgrading roads, bridges and railways is already feeling the pressure. Cement shortages caused by untrained workers are holding back progress (Fortune Business Insights, 2025).
Africa faces a similar problem. Cement demand on the continent is expected to grow by 77 per cent by 2030. But without skilled workers, meeting that demand will be nearly impossible, stalling economic growth and infrastructure development (World Cement Association, 2024).
India is feeling the pinch more than most. The country’s $14.59 billion infrastructure plan, which includes building highways, smart cities and bullet train projects, heavily relies on cement (IBEF, 2024). One of the most ambitious projects, the Mumbai-Ahmedabad Bullet Train, requires a staggering 20,000 cubic metres of cement daily. But skill shortages are disrupting supply, leading to delays.
The problem isn’t just limited to mega-projects. For example, Chennai’s metro expansion faced major delays in 2023 because local cement plants couldn’t meet demand on time. The skill gap is directly impacting the speed and quality of these projects.

What’s at risk?

  • Job creation: India’s construction boom is expected to create around 1 million jobs, but if the cement industry can’t keep up, those opportunities will be lost.
  • Economic growth: Infrastructure development contributes significantly to GDP. Delays in cement supply can slow down the entire economy.
  • Global competitiveness: If India and other countries can’t resolve this skill gap, their ability to compete on a global scale will be compromised.

Bridging the gap
The skill gap in the cement industry isn’t impossible to fix—new training models worldwide are making a difference. Countries and companies are trying out fresh ideas to build a skilled workforce.
In Germany, a dual education system that combines classroom learning with hands-on factory training is producing 60,000 skilled workers every year (IEA, 2023). It’s a practical approach where students gain real-world experience while studying, making them job-ready from day one.
Companies are also stepping up. Holcim introduced virtual reality (VR) training in 2024, allowing workers to practice operating complex cement plants in a simulated environment. This approach saves time, money, and reduces accidents during training.
India is making efforts too. UltraTech’s skill centres trained 10,000 workers in 2023, focusing on areas like automation, machine handling, and safety (IBEF, 2024). The company is trying to bridge the skill gap by equipping workers with modern technical skills.
Collaborations are also happening. Shree Cement has partnered with IIT Kharagpur, producing 500 skilled engineers annually since 2022. This initiative aims to bring fresh talent into the industry, particularly in high-tech areas.
The National Skill Development Corporation (NSDC) and Ambuja Cement have even bigger plans. They aim to train 50,000 young people by 2029, with a special focus on green technologies and sustainable manufacturing.

Why this matters:

  • Reducing the skill gap: If these training programmes expand successfully, India’s 65 per cent skill shortage could be significantly reduced by 2030.
  • Improving productivity: Better-trained workers mean fewer machine breakdowns, improved cement quality and reduced costs.
  • Boosting economic growth: Skilled workers are essential for completing big infrastructure projects on time, directly supporting economic development.

Sustainability at risk
Achieving sustainability in cement production isn’t just about technology—it’s about having skilled workers who can operate and maintain green systems. The cement industry is responsible for 6–8 per cent of the world’s CO2 emissions, pushing companies to find eco-friendly solutions (IEA, 2023).
In 2024, a plant in the UK managed to cut its emissions by 85 per cent by adopting advanced technologies. But here’s the catch: running these systems needs highly trained workers who understand how to use and maintain them.
India is also striving for greener cement production. Major companies like JK Cement have set ambitious targets, aiming to use 50 per cent biomass fuel by 2030. However, only 15 per cent of the workforce currently has the necessary skills to handle this transition effectively (CII, 2024).
Ambuja Cement’s Concrete Futures Lab is one initiative trying to close the skill gap by training 2,000 workers each year in eco-friendly cement production. But compared to the scale of the industry, that’s not nearly enough.

Why this matters:

  • Carbon-neutral goals at risk: India’s target of achieving carbon-neutral cement production by 2050 is in danger if the workforce isn’t adequately skilled.
  • Need for better training programmes: Without widespread and advanced training programmes, green technologies will remain underutilised, slowing down the progress toward sustainability.
  • Global impact: What’s true for India is true for the world—if we don’t bridge the skill gap, the dream of reducing cement’s carbon footprint may stay out of reach.
  • The solution is clear: We need more training centres, better courses, and partnerships between companies, educational institutions, and the government to make green cement production a reality.

The global skill gap
The skill gap in cement manufacturing is a worldwide problem, but it looks different depending on where you are.
In the US, which produced 91 million tonnes of cement in 2023, the main issue is a shortage of workers with digital skills to operate advanced systems (World Cement, 2025).
In Africa, the problem is more basic. The industry lacks trained workers altogether, which could severely impact its cement demand expected to rise by 77 per cent by 2030 (World Cement Association, 2024).
India faces a mixed challenge. Northern cement plants struggle to find workers with the technical expertise to handle modern, automated systems. In contrast, southern plants have a surplus of workers, but their skills are outdated or irrelevant. NSDC trains around 50,000 workers annually, but that’s far too little compared to the rapidly growing demand (World Cement, 2025).
In China, the government takes a proactive approach, training 200,000 workers each year through organised programmes to support its massive production of 2.1 billion tonnes in 2022 (Statista, 2024b).

Why this matters:

  • India’s demand boom: Cement demand in India is projected to increase by 42 per cent by 2030, but without the right skills, meeting that demand will be difficult.
  • Learning from others: Countries need to collaborate, sharing training models and technologies to address skill shortages effectively.
  • Bridging the gap: Without the right skillsets, the cement industry’s growth and sustainability goals are at serious risk worldwide.

The urgent need to address the skill shortage
Time is running out. By 2024, the world will have a surplus of 1 billion tonnes of cement, but only skilled workers can make sure it’s used properly (World Cement Association, 2024). In India, the demand for cement could grow by 7–8 per cent every year through 2027, needing $14.89 billion in new plants (CRISIL, 2024). But without the right skills, this growth is at risk.
Here’s the hard truth for cement companies: current efforts aren’t enough. Training 10,000 workers, like UltraTech did, is a good start, but India needs 500,000 more skilled workers by 2030 to keep up with demand. Globally, companies are hoarding technology but aren’t sharing the necessary training, leaving developing regions behind. In India, companies often focus more on profits than on developing talent. Southern plants, for example, lower wages instead of investing in training, causing skilled workers to leave for better-paying jobs in IT. As for sustainability? Many green projects are just for show unless workers have the skills to run them.
So, what’s the solution? Companies need to think bigger. Globally, the cement industry should pool resources and create an industry fund for training, like the oil industry does for research and development. They should share training tools, like virtual reality, to help regions like Africa catch up. In India, companies like UltraTech and Adani should take the lead by partnering with all engineering colleges—not just the top ones—and offering scholarships to attract young talent. Rural plants should raise wages to compete with city jobs. Governments can help too, like India’s 2025 budget could offer tax cuts to companies that train workers, similar to Germany’s model.
But here’s the tough reality: many cement companies resist change. They prefer to squeeze more out of their current workforce rather than investing in new talent. That approach won’t work. If they don’t act now—really act—plants will shut down, projects will be delayed, and sustainability goals will fail. The choice is clear: build a skilled future or watch everything collapse. Which path will you take?

Conclusion
The skill shortage in cement manufacturing is a serious issue, both globally and in India, and it can’t be ignored any longer. As older workers retire, technology is taking over, but young people aren’t interested in cement jobs. This is causing growth to slow down and impacting green initiatives worldwide. In India, with its massive cement production of 410 million tonnes a year and big plans for the future, the situation is even more critical—65 per cent of plants lack skilled workers, putting jobs and infrastructure at risk.
However, there’s hope. New training programmes, like UltraTech’s centres or global VR training tools, show progress, but these efforts aren’t enough yet. Companies must act quickly, share ideas and invest more in training their workforce. If India makes the right moves, it could boost its production to 599.7 million tonnes by 2032 (IMARC Group, 2024). The global cement industry can also thrive with the right investment in skills.
Ignoring the skill gap means risking the foundation of the cement industry—and the future of construction worldwide. Cement companies must decide now: invest in skilled workers and grow, or let the industry’s progress crumble.

References
1. Confederation of Indian Industry (CII). (2024). Skill shortages in Indian manufacturing: A sector-wise analysis. New Delhi: CII.
2. CRISIL. (2024). Cement sector to invest US$ 14.89 billion as capex by FY27. Mumbai: CRISIL Ratings.
3. Fortune Business Insights. (2025). Cement market size, share & trends: Growth report [2032].
4. India Brand Equity Foundation (IBEF). (2024). Indian cement industry analysis.
5. International Energy Agency (IEA). (2023). Cement: Reducing CO2 emissions while meeting demand.
6. IMARC Group. (2024). India cement market size, share, demand & growth – 2032.
7. McKinsey & Company. (2023). The future of manufacturing: Talent trends in 2023.
8. National Skill Development Corporation (NSDC). (2024). Skill gap assessment in the Indian cement sector. New Delhi: NSDC.
9. Rhodium Group. (2024). The global cement challenge.
10. Statista. (2024a). India’s cement production volume 2008–2022.
11. Statista. (2024b). China’s cement production volume 2010–2023.
12. Statista. (2025). Cement production global 2023.
13. US Geological Survey. (2024). Major countries in worldwide cement production in 2023.
14. World Cement Association. (2024). Global cement industry outlook: Trends and forecasts.
15. World Cement. (2025). India in focus: A comprehensive analysis of the Indian cement industry.

About the author:
Dr SB Hegde is a Professor with the Department of Civil Engineering, Jain College of Engineering and Technology, Hubli, India and a Visiting Professor at Pennsylvania State University, USA. He is a globally recognised cement industry expert and academic leader with over three decades of experience. He has held senior positions in leading cement companies and has authored over 235 research papers, holds 10 patents and guided 2 PhDs.

Economy & Market

Smart Pumping for Rock Blasting

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SEEPEX introduces BN pumps with Smart Joint Access (SJA) to improve efficiency, reliability, and inspection speed in demanding rock blasting operations.
Designed for abrasive and chemical media, the solution supports precise dosing, reduced downtime, and enhanced operational safety.

SEEPEX has introduced BN pumps with Smart Joint Access (SJA), engineered for the reliable and precise transfer of abrasive, corrosive, and chemical media in mining and construction. Designed for rock blasting, the pump features a large inspection opening for quick joint checks, a compact footprint for mobile or skid-mounted installations, and flexible drive and material options for consistent performance and uptime.

“Operators can inspect joints quickly and rely on precise pumping of shear-sensitive and abrasive emulsions,” said Magalie Levray, Global Business Development Manager Mining at SEEPEX. “This is particularly critical in rock blasting, where every borehole counts for productivity.” Industry Context

Rock blasting is essential for extracting hard rock and shaping safe excavation profiles in mining and construction. Accurate and consistent loading of explosive emulsions ensures controlled fragmentation, protects personnel, and maximizes productivity. Even minor deviations in pumping can cause delays or reduce product quality. BN pumps with SJA support routine maintenance and pre-operation checks by allowing fast verification of joint integrity, enabling more efficient operations.

Always Inspection Ready

Smart Joint Access is designed for inspection-friendly operations. The large inspection opening in the suction housing provides direct access to both joints, enabling rapid pre-operation checks while maintaining high operational reliability. Technicians can assess joint condition quickly, supporting continuous, reliable operation.

Key Features

  • Compact Footprint: Fits truck-mounted mobile units, skid-mounted systems, and factory installations.
  • Flexible Drive Options: Compact hydraulic drive or electric drive configurations.
  • Hydraulic Efficiency: Low-displacement design reduces oil requirements and supports low total cost of ownership.
  • Equal Wall Stator Design: Ensures high-pressure performance in a compact footprint.
  • Material Flexibility: Stainless steel or steel housings, chrome-plated rotors, and stators in NBR, EPDM, or FKM.

Operators benefit from shorter inspection cycles, reliable dosing, seamless integration, and fast delivery through framework agreements, helping to maintain uptime in critical rock blasting processes.

Applications – Optimized for Rock Blasting

BN pumps with SJA are designed for mining, tunneling, quarrying, civil works, dam construction, and other sectors requiring precise handling of abrasive or chemical media. They provide robust performance while enabling fast, reliable inspection and maintenance.With SJA, operators can quickly access both joints without disassembly, ensuring emulsions are transferred accurately and consistently. This reduces downtime, preserves product integrity, and supports uniform dosing across multiple bore holes.

With the Smart Joint Access inspection opening, operators can quickly access and assess the condition of both joints without disassembly, enabling immediate verification of pump readiness prior to blast hole loading. This allows operators to confirm that emulsions are transferred accurately and consistently, protecting personnel, minimizing product degradation, and maintaining uniform dosing across multiple bore holes.

The combination of equal wall stator design, compact integration, flexible drives, and progressive cavity pump technology ensures continuous, reliable operation even in space-limited, high-pressure environments.

From Inspection to Operation

A leading explosives provider implemented BN pumps with SJA in open pit and underground operations. By replacing legacy pumps, inspection cycles were significantly shortened, allowing crews to complete pre-operation checks and return mobile units to productive work faster. Direct joint access through SJA enabled immediate verification, consistent emulsion dosing, and reduced downtime caused by joint-related deviations.

“The inspection opening gives immediate confidence that each joint is secure before proceeding to bore holes,” said a site technician. “It allows us to act quickly, keeping blasting schedules on track.”

Framework agreements ensured rapid pump supply and minimal downtime, supporting multi-site operations across continents

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Concrete

Digital process control is transforming grinding

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Satish Maheshwari, Chief Manufacturing Officer, Shree Cement, delves into how digital intelligence is transforming cement grinding into a predictive, stable, and energy-efficient operation.

Grinding sits at the heart of cement manufacturing, accounting for the largest share of electrical energy consumption. In this interview, Satish Maheshwari, Chief Manufacturing Officer, Shree Cement, explains how advanced grinding technologies, data-driven optimisation and process intelligence are transforming mill performance, reducing power consumption and supporting the industry’s decarbonisation goals.

How has the grinding process evolved in Indian cement plants to meet rising efficiency and sustainability expectations?
Over the past decade, Indian cement plants have seen a clear evolution in grinding technology, moving from conventional open-circuit ball mills to high-efficiency closed-circuit systems, Roller Press–Ball Mill combinations and Vertical Roller Mills (VRMs). This shift has been supported by advances in separator design, improved wear-resistant materials, and the growing use of digital process automation. As a result, grinding units today operate as highly controlled manufacturing systems where real-time data, process intelligence and efficient separation work together to deliver stable and predictable performance.
From a sustainability perspective, these developments directly reduce specific power consumption, improve equipment reliability and lower the carbon footprint per tonne of cement produced.

How critical is grinding optimisation in reducing specific power consumption across ball mills and VRMs?
Grinding is the largest consumer of electrical energy in a cement plant, which makes optimisation one of the most effective levers for improving energy efficiency. In ball mill systems, optimisation through correct media selection, charge design, diaphragm configuration, ventilation management and separator tuning can typically deliver power savings of 5 per cent to 8 per cent. In VRMs, fine-tuning airflow balance, grinding pressure, nozzle ring settings, and circulating load can unlock energy reductions in the range of 8 per cent to 12 per cent. Across both systems, sustained operation under stable conditions is critical. Consistency in mill loading and operating parameters improves quality control, reduces wear, and enables long-term energy efficiency, making stability a key operational KPI.

What challenges arise in maintaining consistent cement quality when using alternative raw materials and blended compositions?
The increased use of alternative raw materials and supplementary cementitious materials (SCM) introduces variability in chemistry, moisture, hardness, and loss on ignition. This variability makes it more challenging to maintain consistent fineness, particle size distribution, throughput and downstream performance parameters such as setting time, strength development and workability.
As clinker substitution levels rise, grinding precision becomes increasingly important. Even small improvements in consistency enable higher SCM utilisation without compromising cement performance.
Addressing these challenges requires stronger feed homogenisation, real-time quality monitoring and dynamic adjustment of grinding parameters so that output quality remains stable despite changing input characteristics.

How is digital process control changing the way grinding performance is optimised?
Digital process control is transforming grinding from an operator-dependent activity into a predictive, model-driven operation. Technologies such as online particle size and residue analysers, AI-based optimisation platforms, digital twins for VRMs and Roller Press systems, and advanced process control solutions are redefining how performance is managed.
At the same time, workforce roles are evolving. Operators are increasingly focused on interpreting data trends through digital dashboards and responding proactively rather than relying on manual interventions. Together, these tools improve mill stability, enable faster response to disturbances, maintain consistent fineness, and reduce specific energy consumption while minimising manual effort.

How do you see grinding technologies supporting the industry’s low-clinker and decarbonisation goals?
Modern grinding technologies are central to the industry’s decarbonisation efforts. They enable higher incorporation of SCMs such as fly ash, slag, and limestone, improve particle fineness and reactivity, and reduce overall power consumption. Efficient grinding makes it possible to maintain consistent cement quality at lower clinker factors. Every improvement in energy intensity and particle engineering directly contributes to lower CO2 emissions.
As India moves toward low-carbon construction, precision grinding will remain a foundational capability for delivering sustainable, high-performance cement aligned with national and global climate objectives.

How much potential does grinding optimisation hold for immediate energy
and cost savings?
The potential for near-term savings is substantial. Without major capital investment, most plants can achieve 5 per cent to 15 per cent power reduction through measures such as improving separator efficiency, optimising ventilation, refining media grading, and fine-tuning operating parameters.
With continued capacity expansion across India, advanced optimisation tools will help ensure that productivity gains are not matched by proportional increases in energy demand. Given current power costs, this translates into direct and measurable financial benefits, making grinding optimisation one of the fastest-payback operational initiatives available to cement manufacturers today.

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Concrete

Refractory demands in our kiln have changed

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Radha Singh, Senior Manager (P&Q), Shree Digvijay Cement, points out why performance, predictability and life-cycle value now matter more than routine replacement in cement kilns.

As Indian cement plants push for higher throughput, increased alternative fuel usage and tighter shutdown cycles, refractory performance in kilns and pyro-processing systems is under growing pressure. In this interview, Radha Singh, Senior Manager (P&Q), Shree Digvijay Cement, shares how refractory demands have evolved on the ground and how smarter digital monitoring is improving kiln stability, uptime and clinker quality.

How have refractory demands changed in your kiln and pyro-processing line over the last five years?
Over the last five years, refractory demands in our kiln and pyro line have changed. Earlier, the focus was mostly on standard grades and routine shutdown-based replacement. But now, because of higher production loads, more alternative fuels and raw materials (AFR) usage and greater temperature variation, the expectation from refractory has increased.
In our own case, the current kiln refractory has already completed around 1.5 years, which itself shows how much more we now rely on materials that can handle thermal shock, alkali attack and coating fluctuations. We have moved towards more stable, high-performance linings so that we don’t have to enter the kiln frequently for repairs.
Overall, the shift has been from just ‘installation and run’ to selecting refractories that give longer life, better coating behaviour and more predictable performance under tougher operating conditions.

What are the biggest refractory challenges in the preheater, calciner and cooler zones?
• Preheater: Coating instability, chloride/sulphur cycles and brick erosion.
• Calciner: AFR firing, thermal shock and alkali infiltration.
• Cooler: Severe abrasion, red-river formation and mechanical stress on linings.
Overall, the biggest challenge is maintaining lining stability under highly variable operating conditions.

How do you evaluate and select refractory partners for long-term performance?
In real plant conditions, we don’t select a refractory partner just by looking at price. First, we see their past performance in similar kilns and whether their material has actually survived our operating conditions. We also check how strong their technical support is during shutdowns, because installation quality matters as much as the material itself.
Another key point is how quickly they respond during breakdowns or hot spots. A good partner should be available on short notice. We also look at their failure analysis capability, whether they can explain why a lining failed and suggest improvements.
On top of this, we review the life they delivered in the last few campaigns, their supply reliability and their willingness to offer plant-specific custom solutions instead of generic grades. Only a partner who supports us throughout the life cycle, which includes selection, installation, monitoring and post-failure analysis, fits our long-term requirement.

Can you share a recent example where better refractory selection improved uptime or clinker quality?
Recently, we upgraded to a high-abrasion basic brick at the kiln outlet. Earlier we had frequent chipping and coating loss. With the new lining, thermal stability improved and the coating became much more stable. As a result, our shutdown interval increased and clinker quality remained more consistent. It had a direct impact on our uptime.

How is increased AFR use affecting refractory behaviour?
Increased AFR use is definitely putting more stress on the refractory. The biggest issue we see daily is the rise in chlorine, alkalis and volatiles, which directly attack the lining, especially in the calciner and kiln inlet. AFR firing is also not as stable as conventional fuel, so we face frequent temperature fluctuations, which cause more thermal shock and small cracks in the lining.
Another real problem is coating instability. Some days the coating builds too fast, other days it suddenly drops, and both conditions impact refractory life. We also notice more dust circulation and buildup inside the calciner whenever the AFR mix changes, which again increases erosion.
Because of these practical issues, we have started relying more on alkali-resistant, low-porosity and better thermal shock–resistant materials to handle the additional stress coming from AFR.

What role does digital monitoring or thermal profiling play in your refractory strategy?
Digital tools like kiln shell scanners, IR imaging and thermal profiling help us detect weakening areas much earlier. This reduces unplanned shutdowns, helps identify hotspots accurately and allows us to replace only the critical sections. Overall, our maintenance has shifted from reactive to predictive, improving lining life significantly.

How do you balance cost, durability and installation speed during refractory shutdowns?
We focus on three points:
• Material quality that suits our thermal profile and chemistry.
• Installation speed, in fast turnarounds, we prefer monolithic.
• Life-cycle cost—the cheapest material is not the most economical. We look at durability, future downtime and total cost of ownership.
This balance ensures reliable performance without unnecessary expenditure.

What refractory or pyro-processing innovations could transform Indian cement operations?
Some promising developments include:
• High-performance, low-porosity and nano-bonded refractories
• Precast modular linings to drastically reduce shutdown time
• AI-driven kiln thermal analytics
• Advanced coating management solutions
• More AFR-compatible refractory mixes

These innovations can significantly improve kiln stability, efficiency and maintenance planning across the industry.

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