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Most manufacturers have started moving towards blended cements

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Do you still see a preference for OPC in certain segments of the cement market such as institutional or in certain geographies? How do you deal with these national preferences?
While there is an improvement in the acceptance of blended cements, there are certain segments like RMCs, select infrastructure projects, where the preference continues to be for OPC due to the cost economics and the flexibility available to the contractor. We continue to work with our customers, doing trials with our blended products – PSC, CHD and PCC to get customers to move to blended cements which are more environment friendly and more durable in the long run. We also push GGBS in the RMCs to get slag presence in this segment, from where we can later evaluate the opportunity to supply a slag cement product specific to the RMCs if the cost economics work out in favor of it.

What is your company’s overall product mix – OPC, PPC and PSC? To what extent is this mix is influenced by market preferences and to what extent by availability of fly ash and/or slag?
JSW Cement is India’s leading domestic producer of green cement. The overall product mix is primarily based on Portland Slag Cement (PSC) and its variants. We also have a couple of variants of high grade blended cements – Concreel HD (CHD) and a composite cement – Comp Cem, (PCC) both of which have high one day strengths and faster setting, comparable to other competitive OPC cements available in the market. The mix is largely influenced by the market preferences and we continue to educate our customers to move towards a greener variant of blended cement which is our PSC, CHD and PCC.

Having said this, there are also some key projects where we supply OPC, which is more in projects where we want to have a presence and where we feel there is a long term opportunity with such customers.

How do you view the historical growth rates of PSC & PPC in your markets? How do you project this growth in the coming five years?
The blended market space has been expanding over the last few years with many companies trying to conserve the lifetimes of their mines and also to get into a more environmentally friendly product space. JSW Cement, the largest manufacturer of Portland Slag Cement (PSC), has chalked out an ambitious expansion plan to enhance its production capacity in the coming years. JSW currently produces green cement variants – PSC, CHD & PCC at our manufacturing facilities – Vijayanagar (Karnataka), Nandyal (Andhra Pradesh), Dolvi (Maharashtra) & Salboni (West Bengal) units to service the demand in the South, West and Eastern regions.

In the last year, our PSC has grown by more than 30 per cent, and the premium variants much higher on a year-on-year basis. We are on the process of commissioning a new greenfield 1.2 million tonnes per annum new state-of-the-art plant in Jajpur, Odisha. We expect to optimise our production there by December 2019.

We are planning to double our cement production capacity in the next few years to meet the growing demand for "Green" Cement in the eastern region by a combination of brownfield expansions at our new facility at Salboni, West Bengal and Shiva Cement, Odisha. These projects are expected to be commissioned in various phases until 2023. We are also debottlenecking our plants in South and evaluating opportunities for a GU in Tamil Nadu.

What are the applications or regions where you would recommend use of PPC/PSC to your customers and why?
PPC and PSC both are environment-friendly cements as they use industrial bye-products as an input. PPC classically uses fly ash and PSC uses slag generated in the blast furnace of steel plants.

With a better impermeability, lower heat of hydration and improved resistance to chemicals PPC and PSC cements are largely used in concreting applications. PPC offers good resistance against sulphate attack and hence, it is used in hydraulic structures, marine structures, construction near seashores, dam construction, etc. While with improved workability, higher strength and better chemical resistance PSC is a superior product and is usually lighter in color than OPC. PSC is preferred in applications where the building is exposed to high moisture, salt (chloride or sulphate) or chemicals. For example, marine structures, sewage treatment-related buildings, etc. We also offer PCC- Composite cement – which offers the best of both PPC and PSC and recommend this to our channel, influencers and associated IHBs and contractors.

We have heard a lot about peculiar customer perceptions about colour and smell of cement in some markets? Have you experienced this phenomena? Are these related to presence of slag/fly ash in cement? How do you deal with such idiosyncratic ideas?
We have come across geographies exhibiting a color preference, like for example the South – particularly Andhra Pradesh and Telangana – wanting a darker shade of cement – which they associate with better or higher strength cement. Partly this is also due to the historic availability of OPC in these markets which has attuned the customer preference to the darker shade.

A diametrically opposite view has been observed in the eastern markets where the lighter shade cement is associated with better quality and the premium cements there be it from JSW or any other brand is always a shade lighter than across the rest of the country. This also can probably be due to the availability of slag based cements in the eastern markets traditionally and it being promoted by the bigger brands there like Lafarge, ACC, etc.

Recently BIS have permitted composite cements to be manufactured and sold in India. What is your strategy for introducing this product in the market and what are the manufacturing and marketing challenges involved in this?
We welcome BIS’s decision to permit manufacturing and selling of composite cement in India. In fact, we have already introduced composite cement – which is a blend of fly ash and slag based cement- offering the best of both PSC and PPC – to our customers in Karnataka and more recently in Salboni. We also plan to make it the core product from Jhajpur, our upcoming plant in Odisha.

The feedback from the markets where we have introduced this product, has been very positive and we observe good repeat purchases at our dealer outlets. The key influencers like engineers and contractors who understand the product and its strengths also have given favourable recommendations to this product.

The supply chain of both fly ash and slag have now become an integral part of cement manufacturer. In the light of this how do you see the current demand and supply scenarios of these two commodities – Fly ash and slag? What are the price movements of these 2 commodities? Are you recommending any regulatory help in ensuring more liberal supply of fly ash?
Most cement manufacturers have started moving towards blended cements over the last few years and with this trend continuing, both fly ash and slag will become more and more important in cement manufacturing. With the capacity additions in East, we already observe an increase in slag cost there, and this has resulted in the overall cement prices moving up in the East.

The slowdown in thermal capacity addition could result in availability constraints for fly-ash in the long term, which could affect some of the manufacturers who have only PPC as their blended cement offering. The outlook is relatively better for Slag considering that most Steel manufacturers have shown an inclination to add capacity going ahead.

– BS SRINIVASALU REDDY

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Concrete

Efficient Cooling Solution Boosts Gearbox Uptime

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Efficient Oil Cooling for Gearbox in the Cement Industry. How a High-Performance Plate Heat Exchanger Ensured Thermal Stability and Operational Continuity.

Contributed by: Narendra Joshi and Sourabh Mishra

Application: Gearbox Oil Cooling
Objective: To maintain optimal oil temperature in high-viscosity lubrication systems for gearboxes in cement plants, ensuring uninterrupted operations and minimizing production losses due
to overheating.
Challenge: A prominent cement manufacturing company’s conventional cooling systems were failing to maintain the oil temperature within the optimal range, jeopardizing equipment performance and leading to avoidable downtime.

Background with the Existing System
In heavy-duty industrial applications, particularly in the cement industry, gearboxes are critical components that must operate under high mechanical loads and harsh conditions. These gearboxes rely on lubrication systems where oil plays a dual role, lubrication and heat dissipation. A recurring challenge in such setups is managing the temperature of the gearbox oil. When oil heats beyond a critical limit, its viscosity drops, reducing its ability to form a protective film. This leads to increased friction between components, heat generation, and eventual damage to gearbox components — directly impacting plant uptime and production output.

Delivering Sustainable Heat Transfer Solution with HRS FUNKE High Efficiency Heat Exchanger
This system was selected for its:

  • Excellent thermal performance, ensuring rapid and efficient oil cooling even with high-viscosity fluids.
  • Leakage-proof operation, with no cross-contamination between cooling water and lubrication oil.
  • Robust design, capable of withstanding high operating pressures and variable flow conditions.

The plate exchanger was custom configured based on the oil’s properties, desired outlet temperature, and ambient heat load, ensuring that the oil remained within the specified viscosity range necessary for maintaining gearbox operation and lubrication integrity.

Performance Benefits Delivered

  • Oil temperature control and maintained consistently within target range
  • Viscosity stability and prevented breakdown of lubrication film
  • Equipment reliability and reduced risk of gearbox overheating or failure
  • Production continuity and eliminated unplanned stoppages
  • Long-Term savings and lower maintenance costs and extended oil life

Solution: To address the problem, HRS Process Systems Ltd recommended the installation of a Funke Plate Heat Exchanger a compact, high-efficiency thermal solution engineered specifically for industrial lubrication oil cooling.

Conclusion: The customer achieved precision oil temperature control, ensuring that the gearboxes operated at optimal conditions. This not only safeguarded the mechanical integrity of the gearbox but also directly contributed to higher plant uptime and improved production efficiency in heavy industries like cement manufacturing.

(Communication by the management of HRS Process Systems Ltd)

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Concrete

How Upgrades Can Deliver Energy Savings Across the Cement Process

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Jacob Brinch-Nielsen, Vice President of Professional Services, FLSmidth Cement, brings together recommendations from experts across the flow sheet to demonstrate the role of upgrades in optimising the cement manufacturing process.

Improving energy efficiency in material transport
Pneumatic conveying offers a cleaner and more contained alternative to mechanical conveying. However, pneumatic systems can also be energy-intensive, with inefficiencies arising from air leakage, pressure losses, and outdated equipment designs. Optimising these systems can significantly reduce energy consumption and operating costs.
“One major challenge is maintaining efficient air-to-material ratios, as excessive air use leads to unnecessary power consumption,” explains Emilio Vreca, Manager of PT Product Engineering “Leaks in piping and inefficient compressors further compound energy losses. To address these issues, upgrading to the latest pneumatic conveying solutions can yield substantial improvements.”
The latest pump design—the Fuller-Kinyon® (FK) ‘N’ Pump—provides power savings of up to 15 per cent thanks to an improved seal, while an extended barrel and screw design have improved volumetric efficiency by more than 15 per cent. Similarly, the latest generation Ful-Vane™ Air Compressor has been engineered for increased energy efficiency, with an improved inlet area for capturing larger air flows and compatibility with variable frequency drives.

Optimising energy efficiency in packing and dispatch
Even minor inefficiencies in bagging and palletising can lead to higher maintenance demands, increased material waste, and unnecessary energy use. Reducing these inefficiencies is yet another lever to improve overall plant performance and sustainability.
Upgrading rotary packers enhances weighing accuracy, reduces spout-to-spout variations, and lowers reject rates, improving both product consistency and energy efficiency. Similarly, replacing pneumatic drive systems in palletisers with electric alternatives eliminates compressed air dependency, leading to more precise bag handling and reduced energy demand. These targeted upgrades help streamline operations while minimising environmental impact.
A key development in dust control is the FILLPro™ Dust Reduction Kit for GIROMAT® EVO. “By refining material flow and fluidisation, FILLPro reduces dust emissions at the source, improving bagging efficiency and plant cleanliness,” explains Gabriele Rapizza, Proposal Engineer. “This reduces material loss, prevents blockages, and cuts down on maintenance, helping plants achieve a more stable and energy-efficient packing operation.”

How services contribute to increased energy efficiency
In the past, many viewed the role of the supplier as a “sell-and-move-on” model. Things have certainly changed. As cement producers face challenging markets, heightened competition, and increasingly ambitious decarbonisation targets there is little room to tolerate inefficiencies within the plant. The paradigm has shifted such that the value of expert services is as essential as the initial equipment supplied. Furthermore, as digital solutions progress at speed, a fluid, long-term partnership gives cement plants the best platform to take advantage of the latest tools.
Whether it’s an audit to identify why energy efficiency has decreased from one year to the next, or even an optimisation package preparing your plant for carbon capture solutions – we are believers in the principle that there is always more we can do to improve efficiency. For example, our Online Condition Monitoring Services (OCMS) provide continuous monitoring of critical equipment such as the kiln, mills, cooler and fans, aggregating data and utilising advanced algorithms to identify potential trouble spots. As the OEM and an experienced full solutions provider, we can support these services with expert advice, not only alerting you to a problem but also providing recommendations as to how to remedy it or attending site to support you in person.

Small upgrades, big impact
Energy efficiency is a critical factor, influencing both operational costs and sustainability goals. While large-scale innovations such as carbon capture will play an essential role in long-term decarbonisation (and steal the headlines), incremental mechanical upgrades offer an immediate pathway to lower energy consumption with minimal disruption.
By optimising key process areas — grinding, dosing, combustion, cooling, and material transport — you can achieve measurable energy savings while improving performance and flexibility. These solutions provide a strong return on investment and pave the way for a more sustainable cement industry.

Part 3 of 3. Read Part 1 in the May issue of Indian Cement Review and Par 2 in the June issue of the Indian Cement Review magazine.

(Communication by the management of the company)

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Economy & Market

Hindalco Buys US Speciality Alumina Firm for $125 Million

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This strategic acquisition marks a significant investment in speciality alumina, a key step by Aditya Birla Group’s metals flagship towards becoming future-ready by scaling its high-value, technology-led materials portfolio.

Hindalco Industries, the world’s largest aluminium company by revenue and the metals flagship of the $28 billion Aditya Birla Group, has announced the acquisition of a 100 per cent equity stake in US-based AluChem Companies—a prominent manufacturer of speciality alumina—for an enterprise value of $125 million. The transaction will be executed through Aditya Holdings, a wholly owned subsidiary.

This acquisition represents a pivotal investment in speciality alumina and advances Hindalco’s strategy to expand its high-value, technology-led materials portfolio.

Hindalco’s speciality alumina business, a key pillar of its value-added strategy, has delivered consistent double-digit growth in recent years. It has emerged as a high-growth, high-margin vertical within the company’s portfolio. As speciality alumina finds expanding applications across electric mobility, semiconductors, and precision ceramics, the deal positions Hindalco further up the innovation curve, enabling next-generation alumina solutions and value-accretive growth.

Kumar Mangalam Birla, Chairman of Aditya Birla Group, called the acquisition an important step in their global strategy to build a leadership position in value-added, high-tech materials.

“Our strategic foray into the speciality alumina space will not only accelerate the development of future-ready, sustainable solutions but also open new pathways to pursue high-impact growth opportunities. By integrating advanced technologies into our value chain, we are reinforcing our commitment to self-reliance, import substitution, and building scale in innovation-led businesses.”

Ronald P Zapletal, Founder, AluChem Companies, said the partnership with Hindalco would provide AluChem the ability and capital to scale up faster and build scale in North America.

“AluChem will benefit from their world-class sustainability and safety standards and practices, access to integrated operations and a consistent, reliable raw material supply chain. Their ability to leverage R&D capabilities and a talented workforce adds tremendous value to our innovation pipeline, helping drive market expansion beyond North America.”

An Eye on the Future

The global speciality alumina market is projected to grow significantly, with rising demand for tailored solutions in sectors such as ceramics, electronics, aerospace, and medical applications. Hindalco currently operates 500,000 tonnes of speciality alumina capacity and aims to scale this up to 1 million tonnes by FY2030.

Commenting on the development, Satish Pai, Managing Director, Hindalco Industries, said the deal reinforced their commitment to innovation and global expansion.

“As alumina gains increasing relevance in critical and clean-tech sectors, AluChem’s advanced chemistry capabilities will significantly enhance our ability to serve these fast-evolving markets. Importantly, it deepens our high-value-added portfolio with differentiated products that drive profitability and strengthen our global competitiveness.”

AluChem adds a strong North American presence to Hindalco’s portfolio, with an annual capacity of 60,000 tonnes across three advanced manufacturing facilities in Ohio and Arkansas. The company is a long-standing supplier of ultra-low soda calcined and tabular alumina, materials prized for their thermal and mechanical stability and widely used in precision engineering and high-performance refractories.

Saurabh Khedekar, CEO of the Alumina Business at Hindalco Industries, said the acquisition unlocked immediate synergies, including market access and portfolio diversification.

“Hindalco plans to work with AluChem’s high performance technology solutions and scale up production of ultra-low soda alumina products to drive a larger global market share.”

The transaction is expected to close in the upcoming quarter, subject to customary closing conditions and regulatory approvals.

 

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