Concrete
Cash for trash
Published
5 years agoon
By
admin
India faces major environmental challenges associated with waste generation and inadequate waste collection, transport, treatment and disposal. Current systems in India cannot cope with the volumes of waste generated by an increasing urban population.
It is estimated that the Mumbai region alone generates one-third of the total waste generated in Maharashtra and it also tops the list of metros in terms of solid waste generated every day. The municipal solid waste generated by the Mumbai region includes all kinds of waste including biodegradable, non-biodegradable, construction, metal, plastic and other kinds of waste.
INCENTIVE FOR LESS WASTE
Stalin Dayanand, a conservationist and activist with Mumbai-based environmental NGO Vanashakti, said issues like waste management have been overlooked by governments deliberately because there is so much money involved in waste management budgets. ??he budget gets bigger and bigger when more waste is generated. There is no incentive to reduce it. Instead, the municipal corporations hand out contracts. So, why will someone stop it? Whether it is Delhi or Mumbai, there is no ward-wise estimation of waste. A waste audit has to be done in every ward to understand what are the problems of that ward. There needs to be an incentive for less waste. There needs to be a carrot and stick policy,??Stalin said.
??he landfill sites as per the rules should have been kilometres away from the nearest human habitation but there they are next to housing colonies. The entire area is enveloped in the stench. People are being treated like pigs and made to live in horrible conditions. The money involved in waste management in Mumbai itself is in the range of Rs 80-100 billion and that kind of money has its own power play,??Dayanand added.
In September 2019, a group of citizens of Pune had released an environment manifesto that was submitted to all political parties and their candidates seeking votes. Apart from other environmental issues, the citizen manifesto demanded a push for ensuring the segregation of waste at the user level and a clear policy regarding the responsibility of waste on its generator.
Stalin explained that people are aware of the problem of waste and know about the importance of segregating it but the problem is when the segregated waste is collected and they see the garbage truck taking all of it together to a dumping ground, where it is mixed again, they feel their effort is futile.
Waste management infrastructure has an important role in delivering sustainable development. Rapid population growth in India has led to depletion of natural resources. Wastes are potential resources and effective waste management with resource extraction is fundamental to effective SWM (Solid WasteManagement). Value extraction from waste can be materials, energy or nutrients, and this can provide a livelihood for many people. The transition from wastes to resources can only be achieved through investment in SWM as this depends on a coordinated set of actions to develop markets and maximize recovery of reusable/recyclable materials.

WASTE CHARACTERISATION DATA
Estimating the quantity and characteristics of municipal solid waste (MSW) in India and forecasting future waste generation is fundamental to successful waste management planning. The quantity of MSW generated depends on living standards, the extent and type of commercial activity, eating habits and season. The local economy impacts on waste composition, as high-income groups use more packaged products, resulting in higher volumes of plastics, paper, glass, metals and textiles. Changes in waste composition can have a significant impact on waste management practices.
The average composition of MSW produced by Indian cities is approximately 41 wt.% organic, approximately 40 wt.% inert, with approximately 19 wt.% potentially recyclable materials. Most organic waste is generated from households, and inert waste is generated from construction, demolition and road sweeping. Waste samples collected from Delhi, Ahmadabad and Bangalore indicate that MSW composition varies between cities.

FUTURE WASTE GROWTH
World waste production is expected to be approximately 27 billion tonnes per year by 2050, one-third of which will come from Asia, with major contributions from China and India. Waste generation in urban areas of India will be 0.7 kg per person per day in 2025, approximately four to six times higher than in 1999. The problems associated with waste become more acute as the size of communities increase. Urban India generated 31.6 million tonnes of waste in 2001 and is currently generating 47.3 million tonnes. By 2041, waste generation is predicted to be 161 million tonnes, a fivefold increase in four decades.
COLLECTION & TRANSPORT
Waste collection, storage and transport are essential elements of any SWM system and can be major challenges in cities. Waste collection is the responsibility of the municipal corporations in India. Improvements to waste collection and transport infrastructure in India will create jobs, improve public health and increase tourism . Local bodies spend around Rs 500 to Rs 1,000 per tonne on SWM with 70 per cent of this amount spent on collection and 20 per cent spent on transport. It is to be noted by the waste generators that in order to have successful model of waste utilisation the waste user would like to have a seamless supply and his consumption point. Any unreliable supply will jeopardise the success.

SOLUTIONS: WASTE TO ENERGY, WASTE TO FUEL
Source separation of inert and high moisture content fractions would maximise the potential for thermal recovery and other treatment options in India. The waste processed in thermal recovery is residual waste. The most widely used waste-to-energy technology for residual waste uses combustion to provide combined heat and power. Adopting maximum recycling with waste-to-energy in an integrated waste management system would significantly reduce dumping in India. Waste-to-energy technologies are available that can process unsegregated low-calorific value waste, and industry is keen to exploit these technologies in India. Several waste-to-energy projects using combustion of un-segregated low-calorific value waste are currently being developed. Alternative thermal treatment processes to combustion include gasification, pyrolysis, production of refuse derived fuel and gas-plasma technology.
CII WASTE MATERIAL EXCHANGE
Confederation of Indian Industry (CII) is working on an initiative to facilitate use of urban and industrial waste as alternate fuel and raw materials (AFR) in Indian cement Industry, the main objective of the initiative is to facilitate waste exchange and promote sustainable waste management practices and circular economy concepts in India. This initiative will support the nation in reducing its overall carbon emissions.
CII in partnership with European Union – Resource Efficiency Initiative for India (EU-REI) developed a unique website, which acts as a platform to facilitate material exchange and enable network between buyers and sellers, thereby promoting resource efficiency among the stakeholders of waste management in the country. This website will offer a platform for waste generator (non-hazardous and hazardous waste) to register and share the details of waste generated with quantity and quality. Also, offers waste users to access the information on waste generation and policy framework for managing the waste in the country. This website will facilitate significant synergies among large industries, Government, ULB’s and SMEs, where the waste/by-product of one may be used as a resource in other, thereby reducing the use of natural resources and overall carbon emissions.
CII will make the documents on waste inventory in various states and list of co-processing units approved by the Central Pollution Control Board (CPCB). Procedures to be followed for co-processing approvals in cement plants and transportation of Hazardous waste were listed in this section.
Moreover, official estimates report that out of the 26,000 tpd of plastic waste generated across India, only 60 per cent of it is recyclable. ??he association of cement manufacturers has assured us that they will take necessary steps to ensure that all cement plants use plastic waste fuel,??said Durga Shankar Mishra, Urban Affairs Secretary, Government of India. ??hat will help us in a big way to get rid of the garbage that can’t be processed.” The Ministry of Housing and Urban Affairs (MoHUA) has approached the cement industry to see how it can increase the dispatches of processed waste to cement plants. The current estimates are that plastic waste needs to be transported up to 200 km before reaching a cement plant for co-processing. The MoHUA and CMA collectively conducted the plastic waste initiative across five cities in India, including Delhi, Noida, Lucknow, Raipur and Ahmedabad.
Jharkhand cement plant in West Singhbhoum district is one of the first cement plants in India to adopt plastic waste co-processing. The cement producers in Gujarat are among the leaders for co-processing plastic waste, which makes up five per cent of their total fuels, and it could soon be made mandatory for producers in the state to increase this to 10 per cent of their fuel use. ?? few plants have already started setting up some infrastructure so that they can dispose of plastic waste,??added Mahendra Singhi, MD and CEO of Dalmia Bharat.
WHO PAYS?
Meanwhile, there are several issues up for discussion. These will include who will bear the cost of any investments required and how soon the country can make the switch to burning plastic waste. It is estimated that the capital expenditure required to install the necessary equipment to burn the waste will be between Rs 150 to Rs 300 million per plant.
??he model implemented in Europe and worldwide is for the polluter to pay,??added Singhi. ??f India implements this scheme, then the producers of single-use plastics will pay to dispose their waste. The cement industry should either get paid or the plastic should at least be free for us.??/p>
Another issue to be addressed is about the continuous supply of waste as the industry is expected to invest in capital expenditure.
MEGHALAYA INITIATIVE
However, initial projects have not always been free for the cement plants. In Meghalaya, where around 10 per cent of the country?? limestone reserves are found and home to many cement plants, cement companies pay for the plastic waste. One initiative has ragpickers and volunteers collecting plastic waste to be used as fuel in cement plants. To benefit from this service, cement producers have to pay the scrap dealers Rs 30/kg of plastic as part of the government?? ??lastic Challenge??initiative. The scheme enables tribal bodies and local organisations in Meghalaya to play their part in reducing plastic waste in the province, which has had a plastic ban on many items since 2018. (Source: CemNet.com)
The fuel mix of cement manufacturers is going through a churn. The last decade saw cement companies partially substitute coal with pet coke. However, the fuel mix now includes plastics and tyres, as companies look to rejig their sourcing. ??ur fuel mix currently comprises alternative fuels at 7 per cent. According to Geocycle (a waste management solution), the estimated amount in the long-term will be 13 per cent as disclosed by Ambuja Cements. The company has adopted Geocycle as a co-processing technique for industrial and other wastes at its kilns.
Co-processing refers to the use of waste materials in industrial processes as alternative fuel or raw material. Due to the high temperature in the cement kiln, different types of wastes can be effectively disposed of without harmful emissions, according to CPCB. Others like UltraTech, Nirma?? Nuvoco, JK Lakshmi and Madras Cement are among companies that are burning waste ranging from tyre chips, rubber dust to rice husk and cashew nut shells in their kilns to generate heat. At Dalmia Cement?? Responsible Industrialisation initiative, around 18.9 tonnes of plastic waste was collected from residential areas, the plant and neighbouring villages and used in the kiln to save a good 56 million kilo calories of energy.
For the country?? largest cement maker UltraTech, alternative fuels contribute eight to 18 per cent to the total fuel mix. In an investor presentation in February, the company said it is targeting 10 per cent contribution from alternative fuels by the end of the current financial year.
Companies like Shree Cements have also extended the fuel mix to sources like automobile sludge, waste water with high ammonia levels as well as medical waste. ??lternative fuel now contributes four to five per cent to our total fuel mix,??said HM Bangur, managing director of Shree Cements.
Anumita Roy Chowdhury, executive director at Centre for Science and Environment or CSE, said, ??o ensure such processes do not cause environmental hazards, there is a need for stringent monitoring of stack and process emissions as well as profiling of emissions.??She added, ??ement companies will have to invest in effective emission control systems to stay within the permissible limit and reduce toxic emissions. Adequacy of emission standards will have to be reviewed from time to time.??/p>
– VIKAS DAMLE
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Cement Demand Revives As Prices Decline In Q3 FY26
Nuvama reports improved volume growth after price correction
Published
1 day agoon
February 24, 2026By
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A report by Nuvama Financial Services (Nuvama) said cement sector demand revived in the third quarter of fiscal year twenty twenty six as prices declined, supporting volume growth across regions. The note indicated that sequential price correction helped replenish demand that had been subdued by elevated pricing earlier in the year. Nuvama quantified the price decline as a sequential correction that varied across states and segments, facilitating restocking by merchants and traders.
The report suggested that improved affordability after the price correction encouraged housing and infrastructure activity, with developers and contractors adjusting procurement plans. It added that regional dynamics varied, with some markets showing faster recovery while others remained reliant on seasonal construction cycles. Housing demand was driven by both affordable and mid segment projects, while infrastructure segment recovery was contingent on timely execution of public works.
Analysts at Nuvama assessed that the price moderation eased inventory pressures for manufacturers and distributors and supported margin stabilisation at several producers. Demand improvement was visible in both urban and rural segments, although the pace of recovery differed by state and trade channel. Producers were seen balancing price realisations with volume targets and managing input cost volatility through operational efficiencies.
The report recommended that investors monitor volumes and realisations closely as market equilibrium emerges in the coming quarters, noting that sustainability of recovery would depend on monsoon patterns and government infrastructure outlays. Overall, the assessment pointed to a cautiously optimistic outlook for the cement industry as price correction translated into tangible volume gains. Market participants were advised to track early signs of demand broadening beyond core construction hubs to assess the depth of the rebound.
Concrete
Refractory demands in our kiln have changed
Published
5 days agoon
February 20, 2026By
admin
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.
Concrete
Digital supply chain visibility is critical
Published
5 days agoon
February 20, 2026By
admin
MSR Kali Prasad, Chief Digital and Information Officer, Shree Cement, discusses how data, discipline and scale are turning Industry 4.0 into everyday business reality.
Over the past five years, digitalisation in Indian cement manufacturing has moved decisively beyond experimentation. Today, it is a strategic lever for cost control, operational resilience and sustainability. In this interview, MSR Kali Prasad, Chief Digital and Information Officer, Shree Cement, explains how integrated digital foundations, advanced analytics and real-time visibility are helping deliver measurable business outcomes.
How has digitalisation moved from pilot projects to core strategy in Indian cement manufacturing over the past five years?
Digitalisation in Indian cement has evolved from isolated pilot initiatives into a core business strategy because outcomes are now measurable, repeatable and scalable. The key shift has been the move away from standalone solutions toward an integrated digital foundation built on standardised processes, governed data and enterprise platforms that can be deployed consistently across plants and functions.
At Shree Cement, this transition has been very pragmatic. The early phase focused on visibility through dashboards, reporting, and digitisation of critical workflows. Over time, this has progressed into enterprise-level analytics and decision support across manufacturing and the supply chain,
with clear outcomes in cost optimisation, margin protection and revenue improvement through enhanced customer experience.
Equally important, digital is no longer the responsibility of a single function. It is embedded into day-to-day operations across planning, production, maintenance, despatch and customer servicing, supported by enterprise systems, Industrial Internet of Things (IIoT) data platforms, and a structured approach to change management.
Which digital interventions are delivering the highest ROI across mining, production and logistics today?
In a capital- and cost-intensive sector like cement, the highest returns come from digital interventions that directly reduce unit costs or unlock latent capacity without significant capex.
Supply chain and planning (advanced analytics): Tools for demand forecasting, S&OP, network optimisation and scheduling deliver strong returns by lowering logistics costs, improving service levels, and aligning production with demand in a fragmented and regionally diverse market.
Mining (fleet and productivity analytics): Data-led mine planning, fleet analytics, despatch discipline, and idle-time reduction improve fuel efficiency and equipment utilisation, generating meaningful savings in a cost-heavy operation.
Manufacturing (APC and process analytics): Advanced Process Control, mill optimisation, and variability reduction improve thermal and electrical efficiency, stabilise quality and reduce rework and unplanned stoppages.
Customer experience and revenue enablement (digital platforms): Dealer and retailer apps, order visibility and digitally enabled technical services improve ease of doing business and responsiveness. We are also empowering channel partners with transparent, real-time information on schemes, including eligibility, utilisation status and actionable recommendations, which improves channel satisfaction and market execution while supporting revenue growth.
Overall, while Artificial Intelligence (AI) and IIoT are powerful enablers, it is advanced analytics anchored in strong processes that typically delivers the fastest and most reliable ROI.
How is real-time data helping plants shift from reactive maintenance to predictive and prescriptive operations?
Real-time and near real-time data is driving a more proactive and disciplined maintenance culture, beginning with visibility and progressively moving toward prediction and prescription.
At Shree Cement, we have implemented a robust SAP Plant Maintenance framework to standardise maintenance workflows. This is complemented by IIoT-driven condition monitoring, ensuring consistent capture of equipment health indicators such as vibration, temperature, load, operating patterns and alarms.
Real-time visibility enables early detection of abnormal conditions, allowing teams to intervene before failures occur. As data quality improves and failure histories become structured, predictive models can anticipate likely failure modes and recommend timely interventions, improving MTBF and reducing downtime. Over time, these insights will evolve into prescriptive actions, including spares readiness, maintenance scheduling, and operating parameter adjustments, enabling reliability optimisation with minimal disruption.
A critical success factor is adoption. Predictive insights deliver value only when they are embedded into daily workflows, roles and accountability structures. Without this, they remain insights without action.
In a cost-sensitive market like India, how do cement companies balance digital investment with price competitiveness?
In India’s intensely competitive cement market, digital investments must be tightly linked to tangible business outcomes, particularly cost reduction, service improvement, and faster decision-making.
This balance is achieved by prioritising high-impact use cases such as planning efficiency, logistics optimisation, asset reliability, and process stability, all of which typically deliver quick payback. Equally important is building scalable and governed digital foundations that reduce the marginal cost of rolling out new use cases across plants.
Digitally enabled order management, live despatch visibility, and channel partner platforms also improve customer centricity while controlling cost-to-serve, allowing service levels to improve without proportionate increases in headcount or overheads.
In essence, the most effective digital investments do not add cost. They protect margins by reducing variability, improving planning accuracy, and strengthening execution discipline.
How is digitalisation enabling measurable reductions in energy consumption, emissions, and overall carbon footprint?
Digitalisation plays a pivotal role in improving energy efficiency, reducing emissions and lowering overall carbon intensity.
Real-time monitoring and analytics enable near real-time tracking of energy consumption and critical operating parameters, allowing inefficiencies to be identified quickly and corrective actions to be implemented. Centralised data consolidation across plants enables benchmarking, accelerates best-practice adoption, and drives consistent improvements in energy performance.
Improved asset reliability through predictive maintenance reduces unplanned downtime and process instability, directly lowering energy losses. Digital platforms also support more effective planning and control of renewable energy sources and waste heat recovery systems, reducing dependence on fossil fuels.
Most importantly, digitalisation enables sustainability progress to be tracked with greater accuracy and consistency, supporting long-term ESG commitments.
What role does digital supply chain visibility play in managing demand volatility and regional market dynamics in India?
Digital supply chain visibility is critical in India, where demand is highly regional, seasonality is pronounced, and logistics constraints can shift rapidly.
At Shree Cement, planning operates across multiple horizons. Annual planning focuses on capacity, network footprint and medium-term demand. Monthly S&OP aligns demand, production and logistics, while daily scheduling drives execution-level decisions on despatch, sourcing and prioritisation.
As digital maturity increases, this structure is being augmented by central command-and-control capabilities that manage exceptions such as plant constraints, demand spikes, route disruptions and order prioritisation. Planning is also shifting from aggregated averages to granular, cost-to-serve and exception-based decision-making, improving responsiveness, lowering logistics costs and strengthening service reliability.
How prepared is the current workforce for Industry 4.0, and what reskilling strategies are proving most effective?
Workforce preparedness for Industry 4.0 is improving, though the primary challenge lies in scaling capabilities consistently across diverse roles.
The most effective approach is to define capability requirements by role and tailor enablement accordingly. Senior leadership focuses on digital literacy for governance, investment prioritisation, and value tracking. Middle management is enabled to use analytics for execution discipline and adoption. Frontline sales and service teams benefit from
mobile-first tools and KPI-driven workflows, while shop-floor and plant teams focus on data-driven operations, APC usage, maintenance discipline, safety and quality routines.
Personalised, role-based learning paths, supported by on-ground champions and a clear articulation of practical benefits, drive adoption far more effectively than generic training programmes.
Which emerging digital technologies will fundamentally reshape cement manufacturing in the next decade?
AI and GenAI are expected to have the most significant impact, particularly when combined with connected operations and disciplined processes.
Key technologies likely to reshape the sector include GenAI and agentic AI for faster root-cause analysis, knowledge access, and standardisation of best practices; industrial foundation models that learn patterns across large sensor datasets; digital twins that allow simulation of process changes before implementation; and increasingly autonomous control systems that integrate sensors, AI, and APC to maintain stability with minimal manual intervention.
Over time, this will enable more centralised monitoring and management of plant operations, supported by strong processes, training and capability-building.
Cement Demand Revives As Prices Decline In Q3 FY26
Refractory demands in our kiln have changed
Digital supply chain visibility is critical
Redefining Efficiency with Digitalisation
Cement Additives for Improved Grinding Efficiency
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