Concrete
Mining in India: Moving Towards a Sustainable Future
Published
4 years agoon
By
admin
The mining industry in India has to ramp up its efforts in order to be more energy efficient and sustainable. Since the process of mining plays an important role in cement manufacturing, we take a closer look at the impact of mining on the environment, human health and biodiversity, and the sustainable processes that are the need of the hour.

The mining industry in India contributes significantly to the economy, amounting to around 10 to 11 per cent to the industrial sector. This industry took a modern turn post the economic reforms of 1991, and the 1993 Mining Policy further helped its growth. India has a rich reserve of mineral and non-mineral ores distributed in five mineral belts across the length and breadth of the country. The geographical distribution of mineral belts are the North Eastern Peninsular Belt, Central Belt, Southern Belt, South Western Belt and North Western Belt. The index of mineral production of the mining and quarrying sector for November 2021 stood at 111.9, which was 5 per cent higher than the level in November 2020.
Mining in India falls under the legal and constitutional framework. Mining operations are regulated under the Mines and Minerals (Development and Regulation) [MMDR] Act of 1957. The State Governments, as owners of minerals, grant mineral concessions and collect royalty, dead rent and fees as per the provisions of MMDR Act. These revenues are held in the Consolidated Fund of State Government until the state legislature approves their use through budgetary processes. The MMDR Act was enacted to provide for the regulation of mines and development of minerals under the control of the Union. The Act has been amended in 1972, 1986, 1994 and 1999 in keeping with changes in the policy on mineral development.

In 2015, the act was amended with the intention of removing discretion and introducing more transparency in the grant of mineral concessions. The amendments now made to the MMDR Act, 1957 provide that mineral concessions will be granted only on the basis of bidding at an auction, for the prospecting stage or mining stage on a case to case basis.
The metals and mining sector in India is expected to witness a major reform in the next few years, owing to reforms such as Make in India Campaign, Smart Cities, Rural Electrification, and a focus on building renewable energy projects under the National Electricity Policy as well as the rise in infrastructure development.

The cement industry largely consumes two minerals – limestone and coal – in the cement making process, which are extracted by the mining from the reserves across the country. Limestone is the primary raw material used for making cement, while coal is extensively used to generate energy for the cement kilns.
The production level of limestone stood at 303 lakh tonnes as of November 2021. According to Invest India, National Investment Promotion and Facilitation Agency, India is home to 1,303 coal mines in 2019-2020, making it the second largest coal producer in the world, producing 716.084 MT coal.
Impact of mining on the environment
Mining of raw materials from quarries may result in enhanced production of the end product, but has an adverse impact on the environment. The effects can result in erosion, sinkholes, loss of biodiversity, or the contamination of soil, groundwater, and surface water by the chemicals emitted from the mining processes. These processes also affect the atmosphere from the emissions of carbon, which have an effect on the quality of human health and biodiversity.

The air around the mines is greatly impacted by the release of unrefined particles. Wind or vehicular movements make these fine particles airborne affecting people living close to the mines and causing health issues. Similarly, mining can also lead to the pollution of water bodies surrounding the mines, which could occur due to mineral or sediment deposits, acid mine drainage or waste disposal. This could hamper the quality of water surrounding the mines, leading to water pollution and health problems to those who may consume this water in some form. Land and biodiversity close to the mines are also impacted; it may lead to soil erosion and landslides while disrupting the life of living creatures in the area.
Mining and the cement industry
Mining is an integral part of the cement making process. It is the first step in obtaining the key raw material – limestone – from quarries to make the final product. Limestone is obtained from the deposits or rock by blasting or mechanical excavation depending on the hardness of the rock. It is then crushed into smaller chunks. After crushing the stone is sorted into different fractions by screening, after which it is processed further. In the grinding process, the limestone is ground to a fine powder.
Most of the limestone is obtained from open quarries. The extraction is carried out by open cast method on both small and large scales. The small-scale extraction of limestone is done manually by individuals using minimal machinery. The limestone beds are drilled for blast holes using drilling machines, after which the rocks undergo blasting. The limestone rocks undergo manual sizing, in order to obtain rock pieces of suitable sizes for easy transportation and processing.
For cement, limestone mining takes place on a large scale by the underground mining method. The basic operations in underground mining are drilling, blasting, loading and hauling, scaling and roof bolting. Drilling equipment includes horizontal drills and down hole track drills. This equipment results in much smaller blast holes and a lower volume of rock produced with each blast. Other equipment required in the underground mine includes powder loaders, which are used to blow ammonium nitrate–fuel oil mixtures into the blast holes. Scaling rigs, which are used to remove loose rocks from the ribs and roof of the mine, and roof-bolting equipment may also be required in an underground mine.
“Mining is undertaken as per the approved mine plan. All environmental parameters as per the norms of the Ministry of Environment, Forests and Climate Change (MoEFCC) are taken into consideration while preparing the mine plan. Since mining is localised to a few hectares of area only, hence its impact is negligible. The areas of concern are air, water and noise pollution, which are monitored regularly while dust suppression is a regular process as per the guideline of DGMS as well as IBM. Impact on the lease area is minimal,” says Hitesh Sukhwal, Senior Manager (Head Environment), JK Lakshmi Cement Ltd.
“The mining area is selectively identified, and parameters such as reducing diesel consumption, less lead distance, fuel efficient equipment, separate dumps for rejects, dust suppression with less quantity of water (like fogging system), optimum utilisation of resources, working and calibration of cross belt analyser are some considerations, which are taken into account while carrying out mining. Monitoring of all the mentioned parameters helps in identifying areas of concern and thereby leads to optimisation of the mining operations,” he adds.
Cement making is an energy intensive process and coal provides for 90 per cent of the energy consumed by cement plants around the world. India is one of the largest producers and consumers of coal, with the cement sector dominating its consumption. The Coal India Limited (CIL) is the state-owned miner for the country and accounts for over 80 per cent of domestic coal production. CIL coal production target for India is set to 1 billion tonnes by FY2020. However, the cement industry gets about 5 per cent of coal from within the country, and the rest of its coal demand is met through imports. The combustion process results in the emission of carbon dioxide, which is a prominent reason for air pollution.
There are four types of coal available in India, namely, peat, lignite, bituminous coal and anthracite coal. The most consumed amongst these are lignite and bituminous. The cement industry mainly uses non-coking bituminous coal and lignite in small quantities in plants in Tamil Nadu and Rajasthan. Specifically, the coal used by the cement companies is of grade G4, G5, G6, G7, G8 and G9.
The industry is constantly looking for alternative solutions to replace coal and reduce the carbon emission by substituting it with other energy giving materials. This is a conscious effort taken by all large players in the cement industry.
This leads to the cement industry being one of the largest consumers of coal and buyers of the mined mineral. Coal mining has its own set of impacts on the environment. “Coal mining activities change the land use pattern and thus, impact the flora, fauna, water table and vegetation in the mining area and surrounding to an extent. However, by deploying sustainable practices, which are part of mine planning and implementation, this impact can be reduced to a great extent,” says Pukhraj Sethiya, Associate Vice President – Mining & Integrated Coal Management, Adani Enterprises.
“We have been deploying sustainable mining practices in our mines, which has mitigated the impact of mining activities on the environment to a great extent while at the same time generating a large number of employment opportunities. The sustainable practices that we have adopted include transplantation of trees rather than simply cutting them, soil storage, water treatment and reutilisation and coal transportation through mechanised and covered means,” he adds.
Mining waste – a resource or hazard?
According to the Indian Bureau of Mines, it is estimated that well over 170 million tonnes of solid wastes related to mining are generated in India every year. This is expected to rise substantially to 300 million tonnes with the increase in production of various minerals. Due to shortages of some minerals in the natural reserves and depletion of high-grade ores, leaner grade ores are being mined which generate a large amount of waste. Adding to this, the preferred method of mining for industries is the open cast method for its high productivity, economic viability and safety aspects, which leads to large volumes of waste generation.
This rock waste generated cannot be immediately back filled due to geological constraints and has to be planned and phased out. This results in stacking of this waste externally creating a mining waste dump.
“We practice zero waste mining as part of our sustainable process. The waste generated during the mining (while removing the soil or hard rocks) we use the waste for the back filling. When we move the limestone that is exposed through drilling and mining, a pit is formed and we use the waste material from the mining process to fill back the pit,” says SK Tiwar, Director Technical, Heidelberg Cement (India).
Besides occupying a large area of land, these dumps impact the landscape forestry and vegetation of the location. Wash-offs from these dumps pose siltation of nearby water bodies and agricultural fields. They are also prone to wind erosion.
While this waste is an unavoidable damage to the land, there are many ways of rehabilitating the area where the waste is dumped. The design of the waste should accommodate progressive rehabilitation to ensure a minimum area is disturbed at any given time. This waste can also be used in alternative jobs, like construction or landfills, to put it to good use and reduce the stacking and dumping of the same.
It must be ensured that a proper drainage channel is created from the waste dump in case heavy rainfall is expected in the area. This shall prevent the nearby land from getting contaminated with the waste residues. Proper rehabilitation of tailings must be planned in order to avoid contamination of water sources around the dump area.
Rehabilitation of the mining waste dump areas should aim to establish a vegetative cover and increase rainfall infiltration. Dumps with higher salt content must be screened with overburden of the lowest salt content.
In all the above methods, the mining waste dump must be attended to and should be put to use or rehabilitated to avoid damage to the environment, water and people around the area.
Neeraj Akhoury, CEO India, Holcim Group and Managing Director & CEO, Ambuja Cements Ltd for World Cement, said, “Building a sustainable green construction sector will be the outcome of an active participation of not only cement and other building materials manufacturers but also end consumers and governments. The level of awareness among all stakeholders is much better than what it used to be even a decade or so ago. We can draw a lot of confidence and optimism about the future of a sustainable construction sector from similar achievements like the growth in clean mobility (electric vehicles) and also the impressive strides made in India’s renewable energy sector. A very green construction sector is not very far behind.”
The cement industry consumes mined materials for their varied processes, and its volume has the potential to change the game for the environment. Shifting practices towards sustainable means can lead to a greener country with cleaner air. With advanced technology and better planning, this is an achievable feat. Influential players in the cement industry are making efforts to help heal the environment and create mining processes that do more good than harm.
Kanika Mathur
Concrete
ACC To Expand Cement Capacity Amid Strong Infrastructure Demand
Chairman signals calibrated growth and sustainability focus
Published
4 hours agoon
June 26, 2026By
admin
ACC will continue to expand its cement capacity in a calibrated manner, deepen its ready-mix concrete (RMC) footprint and accelerate the adoption of low-carbon technologies, the company chairman conveyed in the latest annual report. The note emphasised a balanced and disciplined approach as the business pursues growth while maintaining environmental safeguards.
He argued that the long-term growth outlook for the Indian economy remains strong but that demand conditions in the near term were likely to stay moderate, necessitating cautious expansion. He pointed to India’s relatively low per capita cement consumption compared with global averages as an indicator of significant long-term potential and highlighted the rise in public capital expenditure to Rs 12 trillion (Rs 12 tn), which he said accounted for about four point four per cent of the GDP.
Against this backdrop, ACC and the wider Adani Cement business are positioning themselves as integrated building materials solution providers rather than traditional commodity suppliers, prioritising capability creation over consolidation. The chairman framed cement as the ingredient and concrete as the performance and said that infrastructure and real estate development increasingly demand engineered solutions delivered at site.
He described how deeper integration across energy, logistics and digital systems is intended to improve responsiveness and efficiency across manufacturing, transport and market operations. The company intends to strengthen technical engagement, mix optimisation and application support to improve project timelines, reduce wastage and enhance structural durability while embedding data analytics and predictive systems.
On sustainability, ACC affirmed its commitment to reducing its environmental footprint through greater use of blended cement, renewable energy, alternative fuels and improved thermal efficiency, presenting industrial growth and environmental responsibility as parallel objectives. The message positioned the group to supply engineered concrete solutions at the point of application as it scales capacity and service offerings.
Concrete
Ambuja Sees Cement Demand Easing To Around Five Per Cent In FY27
Company Cites Housing, Infrastructure And Government Capex
Published
4 days agoon
June 22, 2026By
admin
Ambuja Cements has said in its latest annual report that cement demand in India is likely to moderate to around five per cent in fiscal year twenty seven, marking a slowdown from the estimated six point five to seven point five per cent growth anticipated for fiscal year twenty six. The company described this as a transition to a more measured pace of expansion after several years of strong momentum in the sector.
It said that underlying demand drivers such as housing, infrastructure development, urbanisation and government capital expenditure remain intact and are expected to sustain cement consumption across regions. The report noted that global geopolitical uncertainties and weather risks, including forecasts of a below normal monsoon, could influence near term demand, while emphasising that the longer term infrastructure story for India continues to provide a solid foundation for the sector.
Industry observers have said that the sector may move towards mid single digit growth rates in fiscal year twenty seven after stronger performances in recent years. The company outlined a calibrated expansion strategy with capacity additions phased to match project pipelines, regional demand patterns and market absorption, seeking to avoid oversupply and pressure on pricing.
Ambuja has crossed the 100 million tonnes per annum capacity milestone (100 mn t per annum) following acquisitions and organic expansion, strengthening its position in the competitive market. The outlook in the report broadly aligns with other market assessments that placed demand at around five per cent in fiscal year twenty five, a recovery to six point five to seven point five per cent in fiscal year twenty six and an easing in fiscal year twenty seven as capacity increases. Executives remain focused on long term demand fundamentals driven by infrastructure and housing.
Gears, drives, and motors have evolved from essential mechanical components into strategic enablers of reliability, efficiency, and sustainability in modern cement plants. ICR explores how advanced motion technologies, predictive maintenance, digitalisation, and intelligent drive systems are helping cement manufacturers reduce downtime, optimise energy use, and build future-ready operations.
As the Indian cement industry prepares for another phase of capacity expansion, the focus is shifting from merely increasing production volumes to improving operational efficiency, reliability, and sustainability. According to industry estimates, India is expected to add nearly 160–170 million tonnes of cement capacity between FY26 and FY28, driven by infrastructure investments, urbanisation, and housing demand. In this environment, gears, drives, and motors have emerged as critical enablers of productivity, forming the backbone of every major process from raw material extraction and grinding to clinker production and cement dispatch.
Motors alone account for nearly 60 per cent to 70 per cent of industrial electricity consumption globally, according to the International Energy Agency (IEA), while rotating equipment failures remain among the leading causes of unplanned downtime across heavy industries. In cement plants, where equipment operates under high loads, extreme dust conditions, elevated temperatures, and continuous-duty cycles, the performance of gears, drives, and motors directly influences energy consumption, maintenance costs, plant availability, and overall profitability. As digitalisation and Industry
4.0 technologies gain momentum, these systems are evolving from passive mechanical components into intelligent assets capable of delivering real-time operational insights.
Why gears, drives, and motors are the backbone of cement plant operations
Every major process in a cement plant depends on the seamless operation of gears, drives, and motors. Raw mills, vertical roller mills, crushers, kiln drives, conveyor systems, fans, and clinker coolers all rely on rotating equipment to maintain continuous production. A failure in any one of these systems can disrupt entire process chains, highlighting their strategic importance.
Modern cement plants process thousands of tonnes of material daily, requiring equipment capable of transmitting enormous torque while maintaining precision and reliability. Kiln drives and grinding systems, in particular, operate under some of the highest mechanical loads found in industrial manufacturing. The ability of gears and motors to withstand these conditions directly impacts plant throughput and production stability.
Satish Maheshwari, Chief Manufacturing Officer, Shree Cement says, “Effective lubrication management remains one of the most critical factors in extending the lifespan of cement plant drive systems. Proper lubrication, supported by regular oil analysis, vibration diagnostics, and condition monitoring, helps minimise wear, prevent unexpected failures, and maintain the integrity of critical components such as gearboxes, motors, and drive assemblies. By identifying potential issues at an early stage, plants can move from reactive maintenance to a more proactive and reliability-focused approach.”
“Smart motors, intelligent drives, and next-generation gearboxes are set to redefine cement plant maintenance and performance. Equipped with embedded sensors, IoT connectivity, digital twins, and AI-driven diagnostics, these technologies enable real-time condition monitoring, predictive maintenance, and seamless digital integration. As the industry embraces Industry 4.0, smart drive systems will play a pivotal role in improving energy efficiency, reducing downtime, and optimising asset performance across the cement manufacturing value chain” he adds.
Industry studies suggest that rotating equipment accounts for a significant proportion of maintenance expenditure in process industries. Effective design, selection, and maintenance of gears, drives, and motors therefore have a direct influence on asset utilisation, operational efficiency, and total cost of ownership.
The cost of downtime: reliability challenges in rotating equipment
Unplanned downtime remains one of the most expensive challenges facing cement manufacturers. Industry estimates indicate that a major failure involving a critical gearbox, kiln drive, or grinding mill can result in production losses running into lakhs of rupees per hour, depending on plant capacity and operating conditions.
Sanjeev Arora, President – Motion Business & IEC LV Motors Division, ABB India says, “One of the most significant shifts taking place in industrial decision-making today is moving away from evaluating equipment based solely on upfront capital cost toward understanding total cost of ownership (TCO). In a typical motor system, the purchase price often represents only a small fraction of the total lifecycle cost however energy consumption, maintenance requirements, downtime and operating efficiency account for the vast majority of long-term operational expenses. For cement manufacturers operating in highly competitive markets, this distinction is critical.”
“A high efficiency motor paired with an appropriately configured variable speed drive may require a higher initial investment, but the long-term benefits are substantial. Reduced electricity consumption, lower maintenance needs, longer service intervals and improved process stability can deliver faster payback and stronger profitability over time” he adds.
Cement plants present a particularly challenging environment for rotating equipment. Dust ingress, thermal fluctuations, shock loads, vibration, shaft misalignment, and lubrication contamination contribute significantly to equipment degradation. Studies by SKF indicate that nearly 50 per cent of bearing failures are linked to lubrication issues and contamination, while improper alignment and vibration-related problems remain leading causes of gearbox and motor failures.
Energy-efficient motors and drives: unlocking operational savings
Energy is one of the largest operating expenses for cement manufacturers, often accounting for 25 per cent to 35 per cent of total production costs. Grinding operations alone can consume nearly 60 per cent to 70 per cent of a plant’s electrical energy, making energy-efficient motors and drives a strategic investment.
According to the International Energy Agency, high-efficiency motors combined with Variable Frequency Drives (VFDs) can reduce energy consumption by 20 per cent to 30 per cent in suitable applications. By matching motor speed and torque to actual process requirements, VFDs minimise unnecessary power consumption while reducing mechanical stress on equipment, improving both efficiency and reliability.
Advances in gearbox design and power transmission technologies
Modern gearbox technology has evolved significantly in response to the increasing demands of cement manufacturing. Advanced materials, case-hardened gears, optimised tooth profiles, improved surface finishing, and enhanced lubrication systems are helping reduce friction, wear, and thermal loading.
Girish Hanchate, Director – Industrial Market, India SKF India (Industrial) says, “Smart diagnostics are significantly improving the lifecycle of gears, motors, and other rotating equipment by enabling a shift from reactive maintenance to condition-based asset management. Hidden issues such as vibration anomalies, bearing defects, misalignment, and temperature fluctuations can quietly reduce plant throughput by 10 per cent to 20 per cent while increasing energy consumption long before a breakdown occurs. By leveraging advanced sensors, predictive analytics, machine learning, and real-time monitoring of vibration, temperature, and motor current, cement manufacturers can detect developing faults early, optimise maintenance schedules, and prevent costly secondary damage. This not only improves reliability but also supports energy efficiency and sustainability objectives.”
“The next major evolution in drive and bearing technology lies in the development of fully integrated smart mechanical ecosystems that combine high-performance bearings, advanced lubrication management, and digital intelligence. Sensor-enabled condition monitoring embedded directly within bearings and drive systems allows operators to capture critical operational data at the source, enabling predictive maintenance and real-time performance optimisation. Innovations such as SKF’s VA9A1 Spherical Roller Bearing series, engineered specifically for demanding cement applications such as crushers and kilns, demonstrate this trend. By increasing internal bearing space and optimising lubricant flow, these designs improve grease retention, reduce wear, minimise downtime, and create more resilient, energy-efficient rotating equipment systems for the future of cement manufacturing” he adds.
Manufacturers are increasingly focusing on compact, high-torque gearbox designs capable of delivering higher power density while maintaining service life. Innovations such as condition-monitored gear systems, improved sealing technologies, and modular gearbox architectures are simplifying maintenance while enhancing operational reliability.
Predictive maintenance, condition monitoring, and asset health management
The shift from reactive to predictive maintenance is transforming asset management across the cement industry. Technologies such as vibration monitoring, thermography, oil analysis, ultrasound testing, and motor current signature analysis are enabling operators to identify potential failures before they occur.
Research by Deloitte suggests that predictive maintenance can reduce breakdowns by up to 70 per cent and lower maintenance costs by 25 per cent. In cement plants, where shutdown windows are limited and equipment operates continuously, predictive maintenance offers a powerful tool for improving reliability and extending asset life.
Digitalisation, industry 4.0, and the rise of intelligent drive systems
Industry 4.0 technologies are redefining the role of gears, drives, and motors. Smart sensors embedded within motors, bearings, and gear systems can continuously monitor temperature, vibration, load, lubrication condition, and energy consumption.
Girish Hanchate says, “As the industry embraces automation, sustainability, and digital transformation, the importance of intelligent motion technologies will continue to grow. The convergence of advanced engineering, predictive maintenance, and Industry 4.0 solutions is creating a new generation of cement plants where reliability, efficiency, and sustainability work together to deliver long-term value. For cement manufacturers navigating increasing production demands and environmental expectations, investing in smarter gears, drives, and motors is no longer optional—it is a business imperative.”
Cloud-based monitoring platforms and Industrial Internet of Things (IIoT) architectures enable maintenance teams to access equipment health data remotely, improving visibility across geographically dispersed operations. Advanced analytics and
artificial intelligence are further enhancing fault detection capabilities, enabling more accurate maintenance planning.
The emergence of digital twins represents another significant development. By creating virtual replicas of physical assets, operators can simulate operating conditions, predict failures, optimise maintenance schedules, and improve lifecycle management decisions. These technologies are helping transform rotating equipment into intelligent assets that actively contribute to operational decision-making.
Building future-ready cement plants through smart motion technologies
The future of cement manufacturing will depend heavily on the ability to integrate mechanical reliability with digital intelligence. Smart motion technologies combine high-efficiency motors,
intelligent drives, condition monitoring systems, and automation platforms to create more responsive and efficient operations.
Sustainability goals are also accelerating investment in advanced motion technologies. Reduced energy consumption, improved equipment efficiency, and extended asset life contribute directly to lower carbon emissions and reduced resource consumption.
These benefits align closely with the industry’s decarbonisation objectives.
As capacity expansions continue across India, future-ready cement plants will increasingly prioritise reliability, flexibility, and data-driven decision-making. Organisations that successfully integrate smart motion technologies into their operations will be better positioned to reduce costs, improve productivity, and maintain a competitive advantage in a rapidly evolving market.
Conclusion
Gears, drives, and motors are no longer viewed solely as mechanical components; they have become strategic assets that influence every aspect of cement plant performance. Their reliability affects production continuity, their efficiency impacts operating costs, and their digital capabilities increasingly shape maintenance and operational strategies.
- –Kanika Mathur
ACC To Expand Cement Capacity Amid Strong Infrastructure Demand
Ambuja Sees Cement Demand Easing To Around Five Per Cent In FY27
Powering Cement Through Intelligent Motion
Liquid Intelligence
The Logistics Imperative
ACC To Expand Cement Capacity Amid Strong Infrastructure Demand
Ambuja Sees Cement Demand Easing To Around Five Per Cent In FY27
Powering Cement Through Intelligent Motion
Liquid Intelligence

