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We have a very strict target on reducing specific energy consumption

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Suman Mukherjee, Managing Director and

CEO – India, Shree Digvijay Cement,Votorantim Cimentos

EAA .

As a member of CSI companies, with WHR and

various other energy- saving measures already in place and plans for AFR

underway, we look forward as befits an energy-efficient and carbon-

positive company in the industry,’ says Suman Managing Director and CEO

India, Sree Digvijay Cement,Votorantim Cimentos EAA .In an

exclusive interview with ICR, Mukherjee spells out the sustainability

initiatives taken by the company.

How do

you look at the sustainability issuesin the cement industry in terms of

energy efficiency, environment protection, CO2 reduction,

etc?
Though the Indian cement industry is one of the

most efficient in the world, it still produced 137 mt of CO2 in 2010 –

approximately 7 per cent of India’s total man-made CO2 emissions. The

Indian cement industry has made strong efforts to reduce its carbon

footprint. It has successfully reduced CO2 emission from 1.12 T CO2 per

tonne cement in 1996 to 0.719 T CO2/T cement in 2010. Key levers to

reduce emission in the Indian cement industry are increased rates of

blending leading to a reduction in clinker to cement ratio, increased

use of AFR, widespread implementation of WHR, transportation of raw

materials through conveyor belt instead of road transport, installation

of various VFD/high energy- efficient equipment to reduce SPC. In line

with this, a low-carbon technology roadmap for the Indian cement

industry was launched on 25th February, 2013 with a targeted estimated

emission of 0.35 T CO2/t cement in 2050, about 45 per cent reduction

from its level in 2010. Cement manufacturing process from surface

mining/quarrying, more usage of WHR, locating main clinkerisation unit

near limestone deposits, transporting clinker through rail, transporting

fly ash through pipeline are a few measures which will help in

achieving and sustaining this targets.

What

is SDCC Cement’s stated goal on

sustainability?
SDCCL, a wholly-owned Votorantim

group company, is one of the member companies of CSI in developing a low

carbon roadmap for the Indian cement industry. We have already

commissioned the WHR system in our plant. We are working on AFR, we are

following surface mining at the quarry. We have a very strict target on

reducing specific energy consumption. In line with that, we have

installed various VFD/high energy efficient equipment to achieve that.

The technical centre from the group is supporting various countries

worldwide to reduce energy consumption. We are also part of the PAT

scheme. To achieve our set targets in PAT, we are working on various

fronts of SEC reduction.

What are you doing

towards reducing your carbon footprint through WHR

systems?
We have installed and commissioned the WHR

system in our plant. This utilises the waste heat/flue gas from

kiln/pre-heater/DG sets/cooler, to generate power. This flue gas is

utilised to generate steam inside boiler which in turn, is utilised to

rotate turbine for power generation. This is a very useful system to get

carbon credit emission as well as to reduce power costs. This also

reduces usage of DG sets/grid power which reduces CO2

emission.

How green is SDCC Cement’s

operation, from mining to production and despatch of

cement?
We use surface miner in mining operations. We

have installed a zero- leakage damper at raw mill inlet, replaced raw

mill six cyclones, improved sealing arrangements in rotary air locks,

replaced raw mill outlet ducts, expansions of point cloth, provided step

chute instead of belt conveyor, optimised overall process for increased

output and reduced SPC. We have also installed VFD across various

stages in the process to reduce energy consumption. We are increasing

fly ash percentage addition in PPC, thus improving overall

cement-to-clinker ratio. We have taken several CAPEX to reduce CO2

emission and also taking various measures to stop DG usage.

Tell us about the advantages of the PAT scheme

?
PAT is the energy conservation drive launched by

BEE (Bureau of Energy Efficiency) under National Mission for Enhanced

Energy Efficiency. Base line figures are average of the past three years

(2007-08, 2008-09 & 2009-10). Target has been given by BEE to

reduce from baseline figures in a span of three years, starting April,

2012 and ending March, 2015. PAT (Perform- Achieve-Trade) is applicable

for energy intensive industries. It covers 563 designated consumers in 8

sectors. The energy specific improvement target would have to be unit

specific. Each Designated Consumers (DC) is mandated to reduce its

special energy consumption (SEC) by a fixed percentage based on its

current SEC (or baseline SEC) within the sectorial bandwidth. In the

Indian scenario, if we look at it percentage- wise, on an average, 40

per cent energy is consumed by industry, 7 per cent by agriculture and

fisheries, 43 per cent commercial and services, 10 per cent household

and others. This PAT scheme is participated by designated consumers of

energy intensive sectors-thermal power plant/iron and

steel/cement/fertilizer/textile/pulp and paper/chloro-alkali. SDCC is a

member of PAT scheme. We have taken various energy savings measure to

achieve our targets. At the end of the third year, energy saving

certificate will be issued to a DC, who will achieve target reduction

from baseline. DC who will fail to achieve the target, penalty linked

with value of non compliance will be imposed. This ES Certificate can be

traded to others who fail to meet their target. This trading can be

carried out between any two DCs. The exchange will also maintain data on

traded prices, traded volume and trend. Special trading platforms will

be created in the two Power Exchanges (IEX and PXIL). This scheme will

be very effective across the industry. It is directly linked with

profitability in the long term; it will help in reducing costs and

improving profitability.

How do you assess

the challenges on the logistics front?
After increase

of rail freight, rail dispatch becomes costlier. The recent increase in

fuel price has also increased the road freight cost. Because of subdued

demand, prices are crashing as a result EBITDA and profit margin are

under huge pressure. Transportation of raw materials through conveyor

belt wherever possible, transportation of fly ash through pipeline, coal

import through sea route (we have a captive jetty), dispatch through

rail, are initiatives which will reduce input cost as well as reduce CO2

emission to improve our carbon footprint.

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Concrete

We engineer smarter systems to reduce waste

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Naveen Kumar Sharma, AVP – Sales and Marketing, Toshniwal Industries, talks about redefining instrumentation with customised, digitally enabled solutions engineered for harsh plant environments.

For over six decades, Toshniwal Industries has played a pioneering role in advancing process instrumentation for Indian manufacturing. In this exclusive conversation with Kanika Mathur, Naveen Kumar Sharma, AVP – Sales & Marketing, explains how the company designs kiln and grinding plant solutions tailored to the unique demands of the cement industry. As plants transition to higher AFR use and smarter automation, Toshniwal’s technologies offer greater reliability, accuracy and predictive insight.

Tell us how are your process instruments and condition monitoring system customised for cement kilns and grinding plant operations?
Toshniwal is a company with a legacy of over 65 years, and our experience has taught us that cement kilns and grinding units are fundamentally different in their operational demands. As an Indian company, we understand the unique requirements of Indian cement manufacturers. We work closely with our customers, engage deeply with their technical teams, and study operational challenges in real-time.
Based on these insights, we customise our solutions for both kiln and grinding applications. This tailoring is not just at a product level, but at a solution level—engineering design, instrumentation logic, and process optimisation. Our primary objective, for both the industry and our customers, is to reduce yield loss. Every customisation we implement is driven by this goal. We engineer smarter systems to reduce waste, improve consistency and increase plant reliability.
Ultimately, our solutions are built on an understanding that cement manufacturers require robust, practical and maintainable instruments. We design with this mindset so plants can operate more efficiently, with better control and higher profitability.

With the rising use of AFR, how do your solutions support thermal zone reliability and process time?
Our solutions are built around four core parameters: energy efficiency, yield loss reduction, product quality and environmental responsibility. These pillars drive our engineering decisions and define how our technologies support cement plants, especially as they adopt alternative fuels and raw materials (AFR).
We strongly believe in energy conservation. Every product we offer—whether for thermal monitoring, kiln control or flame optimisation—is engineered to improve energy performance. Reducing yield loss is another principle deeply embedded in our solutions, because production interruptions and material losses directly affect plant profitability and clinker quality.
We are also highly conscious of the end-product quality delivered by our customers to their markets. Consistency in burning, heat transfer, and thermal profiling directly influences clinker characteristics, and our instruments help maintain this stability.
Lastly, and most importantly, we care about the environment. We want to leave a greener world for the next generation. This mindset aligns with India’s digitalisation movement, advocated by our Prime Minister. Digital technologies are crucial for optimising AFR use, process stability, emissions and kiln efficiency. We are proud to contribute to this transition.
By optimising flame patterns, energy use, and pollution, our solutions deliver direct and indirect savings. Plants benefit from lower operational losses, reduced maintenance, and improved reliability, especially in pyroprocessing zones.

Tell us how do you address harsh environment challenges in cement plants, say dust, temperature, etc. with your sensor and monitoring?
This is a very important question because cement plants, steel plants, and power plants operate in extremely harsh environments. There are two major categories of specifications that we must respect while designing solutions: technical specifications and environmental specifications. Technical specifications relate to performance accuracy, measurement integrity, responsiveness and process safety. Environmental specifications, on the other hand, relate to high temperatures, heavy dust, humidity, vibrations and corrosive atmospheres. Our solutions are engineered to withstand both. We customise sensors, housings, mounting mechanisms and protective systems so that our instruments operate at 100 per cent functionality in harsh conditions. We ensure that the plant experiences minimal downtime from our systems. That is our engineering philosophy—solutions must work reliably in real-world environments, not just in ideal laboratory conditions.

What retrofit pathways do you offer for older cement lines to upgrade measurement and monitoring systems and how is the Indian market responding?
Every solution we provide is scalable and digitally adaptable. Technology evolves rapidly, and our offerings evolve with it. When we upgrade instruments or monitoring systems, we design them to integrate with existing plant infrastructure, so customers do not have to rebuild everything from scratch. Once our solution is installed, software upgrades or performance improvements can often be deployed without major cost. This ensures that customers continue to benefit from ongoing technological advancements. The Indian market has responded positively to this approach. Plant operators appreciate solutions that are future-ready and dynamic rather than static. Scalability helps them maintain competitiveness, extend asset life, and move toward smart manufacturing with confidence.

So how is your organisation leveraging digital technologies in your instrumentation portfolio for cement plants?
Digitalisation is at the core of every product we manufacture. We stand firmly behind the digital movement, not only because it represents efficiency, but because it is the direction in which the Indian industrial ecosystem is evolving. We deploy machine-vision technologies, advanced inline monitoring systems, and solutions capable of visualising the
inside of the furnace. These systems help reduce downtime, enable predictive asset management and provide actionable analytics to customers. All our technologies communicate seamlessly with Level 1, Level 2, and Level 3 automation. This allows integration across SCADA, DCS, ERP, and cloud ecosystems. Digitalisation for us is not an add-on—it is foundational to how our instrumentation is built.

What are your key innovation priorities to help Indian cement plant producers hit harder, higher substitution rates, lower emissions and smarter processing?
Sustainability is a national priority, and we are committed to supporting it. Our current portfolio already helps improve efficiency, reduce emissions, and support alternative fuel integration. But our innovation roadmap goes further. We are now developing specialised productivity-oriented software modules that will provide proactive alerts—not just alarms triggered after a fault has occurred. These modules will leverage artificial intelligence and machine learning to detect patterns early. The intention is to help plant teams take corrective actions ahead of time, reducing yield loss and environmental impact. Instead of informing the plant that a disruption has happened, the system will indicate that a disruption will happen, giving operators time to prevent it. We believe that within the next 12 to 18 months, we will launch these predictive solutions in combination with our instrumentation. When implemented, they will significantly improve decision-making, process stability and environmental performance across the Indian cement sector.

– Kanika Mathur

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Concrete

India donates 225t of cement for Myanmar earthquake relief

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On 23 May 2025, the Indian Navy ship UMS Myitkyina arrived at Thilawa (MITT) port carrying 225 tonnes of cement provided by the Indian government to aid post-earthquake rebuilding efforts in Myanmar. As reported by the Global Light of Myanmar, a formal handover of 4500 50kg cement bags took place that afternoon. The Yangon Region authorities managed the loading of the cement onto trucks for distribution to the earthquake-affected zones.

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Concrete

Reclamation of Used Oil for a Greener Future

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In this insightful article, KB Mathur, Founder and Director, Global Technical Services, explores how reclaiming used lubricants through advanced filtration and on-site testing can drive cost savings, enhance productivity, and support a greener industrial future. Read on to discover how oil regeneration is revolutionising sustainability in cement and core industries.

The core principle of the circular economy is to redefine the life cycle of materials and products. Unlike traditional linear models where waste from industrial production is dumped/discarded into the environment causing immense harm to the environment;the circular model seeks to keep materials literally in continuous circulation. This is achievedthrough processes cycle of reduction, regeneration, validating (testing) and reuse. Product once
validated as fit, this model ensures that products and materials are reintroduced into the production system, minimising waste. The result? Cleaner and greener manufacturing that fosters a more sustainable planet for future generations.

The current landscape of lubricants
Modern lubricants, typically derived from refined hydrocarbons, made from highly refined petroleum base stocks from crude oil. These play a critical role in maintaining the performance of machinery by reducing friction, enabling smooth operation, preventing damage and wear. However, most of these lubricants; derived from finite petroleum resources pose an environmental challenge once used and disposed of. As industries become increasingly conscious of their environmental impact, the paramount importance or focus is shifting towards reducing the carbon footprint and maximising the lifespan of lubricants; not just for environmental reasons but also to optimise operational costs.
During operations, lubricants often lose their efficacy and performance due to contamination and depletion of additives. When these oils reach their rejection limits (as they will now offer poor or bad lubrication) determined through laboratory testing, they are typically discarded contributing to environmental contamination and pollution.
But here lies an opportunity: Used lubricants can be regenerated and recharged, restoring them to their original performance level. This not only mitigates environmental pollution but also supports a circular economy by reducing waste and conserving resources.

Circular economy in lubricants
In the world of industrial machinery, lubricating oils while essential; are often misunderstood in terms of their life cycle. When oils are used in machinery, they don’t simply ‘DIE’. Instead, they become contaminated with moisture (water) and solid contaminants like dust, dirt, and wear debris. These contaminants degrade the oil’s effectiveness but do not render it completely unusable. Used lubricants can be regenerated via advanced filtration processes/systems and recharged with the use of performance enhancing additives hence restoring them. These oils are brought back to ‘As-New’ levels. This new fresher lubricating oil is formulated to carry out its specific job providing heightened lubrication and reliable performance of the assets with a view of improved machine condition. Hence, contributing to not just cost savings but leading to magnified productivity, and diminished environmental stress.

Save oil, save environment
At Global Technical Services (GTS), we specialise in the regeneration of hydraulic oils and gear oils used in plant operations. While we don’t recommend the regeneration of engine oils due to the complexity of contaminants and additives, our process ensures the continued utility of oils in other applications, offering both cost-saving and environmental benefits.

Regeneration process
Our regeneration plant employs state-of-the-art advanced contamination removal systems including fine and depth filters designed to remove dirt, wear particles, sludge, varnish, and water. Once contaminants are removed, the oil undergoes comprehensive testing to assess its physico-chemical properties and contamination levels. The test results indicate the status of the regenerated oil as compared to the fresh oil.
Depending upon the status the oil is further supplemented with high performance additives to bring it back to the desired specifications, under the guidance of an experienced lubrication technologist.
Contamination Removal ? Testing ? Additive Addition
(to be determined after testing in oil test laboratory)

The steps involved in this process are as follows:
1. Contamination removal: Using advanced filtration techniques to remove contaminants.
2. Testing: Assessing the oil’s properties to determine if it meets the required performance standards.
3. Additive addition: Based on testing results, performance-enhancing additives are added to restore the oil’s original characteristics.

On-site oil testing laboratories
The used oil from the machine passes through 5th generation fine filtration to be reclaimed as ‘New Oil’ and fit to use as per stringent industry standards.
To effectively implement circular economy principles in oil reclamation from used oil, establishing an on-site oil testing laboratory is crucial at any large plants or sites. Scientific testing methods ensure that regenerated oil meets the specifications required for optimal machine performance, making it suitable for reuse as ‘New Oil’ (within specified tolerances). Hence, it can be reused safely by reintroducing it in the machines.
The key parameters to be tested for regenerated hydraulic, gear and transmission oils (except Engine oils) include both physical and chemical characteristics of the lubricant:

  • Kinematic Viscosity
  • Flash Point
  • Total Acid Number
  • Moisture / Water Content
  • Oil Cleanliness
  • Elemental Analysis (Particulates, Additives and Contaminants)
  • Insoluble

The presence of an on-site laboratory is essential for making quick decisions; ensuring that test reports are available within 36 to 48 hours and this prevents potential mechanical issues/ failures from arising due to poor lubrication. This symbiotic and cyclic process helps not only reduce waste and conserve oil, but also contributes in achieving cost savings and playing a big role in green economy.

Conclusion
The future of industrial operations depends on sustainability, and reclaiming used lubricating oils plays a critical role in this transformation. Through 5th Generation Filtration processes, lubricants can be regenerated and restored to their original levels, contributing to both environmental preservation and economic efficiency.
What would happen if we didn’t recycle our lubricants? Let’s review the quadruple impacts as mentioned below:
1. Oil Conservation and Environmental Impact: Used lubricating oils after usage are normally burnt or sold to a vendor which can be misused leading to pollution. Regenerating oils rather than discarding prevents unnecessary waste and reduces the environmental footprint of the industry. It helps save invaluable resources, aligning with the principles of sustainability and the circular economy. All lubricating oils (except engine oils) can be regenerated and brought to the level of ‘As New Oils’.
2. Cost Reduction Impact: By extending the life of lubricants, industries can significantly cut down on operating costs associated with frequent oil changes, leading to considerable savings over time. Lubricating oils are expensive and saving of lubricants by the process of regeneration will overall be a game changer and highly economical to the core industries.
3. Timely Decisions Impact: Having an oil testing laboratory at site is of prime importance for getting test reports within 36 to 48 hours enabling quick decisions in critical matters that may
lead to complete shutdown of the invaluable asset/equipment.
4. Green Economy Impact: Oil Regeneration is a fundamental part of the green economy. Supporting industries in their efforts to reduce waste, conserve resources, and minimise pollution is ‘The Need of Our Times’.

About the author:
KB Mathur, Founder & Director, Global Technical Services, is a seasoned mechanical engineer with 56 years of experience in India’s oil industry and industrial reliability. He pioneered ‘Total Lubrication Management’ and has been serving the mining and cement sectors since 1999.

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