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Towards Sustainability: Slag Grinding Circuits

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A detailed explanation of the joint approach of JSW Cement and the KHD Group helps in a better understanding on the acceptance of roller press in slag grinding and finish grinding.

JSW Cement has a strong commitment towards innovation in sustainability and technology to offer environment-friendly construction and building solutions. It is one of India’s leading ‘Green Cement’ manufacturers, growing exponentially since its inception in 2009. Today, after reaching a production capacity of 14 MTPA with minimum industrial bye product over the past 13 years, the group has a vision to build a self-reliant India by boosting the colossal infrastructure and fast-growing economy through projects that set benchmarks. The group aims to increase its production capacity to 75 MTPA by 2030.
In 2009, JSW ordered a 6000 TPD pyroprocessing line along with 8 roller presses for JSW’s first cement production facility at Nandyal, Andhra Pradesh, for raw material grinding, clinker grinding and slag grinding applications. This whole plant was ordered with a belief in KHD Technology. Since then the long continued association between the two companies has been a success story.
In 2015, JSW decided to increase capacity and ordered 16 roller presses for slag and clinker grinding (each unit comprising 2 RP @ 1.2 MTPA). Given the success of the Nandyal project and the market uptake in the use of roller press technology, JSW contracted KHD-HWI to execute the project, at the centre of which was the supply of KHD’s new-generation, energy-efficient roller press circuit. JSW Cement installed new slag grinding circuit at Jajpur plant, Odisha, India, with a KHD Humboldt Wedag roller press system.

Going the high-tech way
With over 160 years of experience in the cement industry, KHD is considered a global leader in cement plant technology. The system offered by KHD Humboldt Wedag for slag grinding is the most energy efficient grinding machine. Special features of the circuit include includes Roller Press (RP 16-170/180), V-separator (VS 80/20) and the well-proven SKS dynamic separator (SKS-V3000).The advantage of this system is that higher capacity requirements are met with lower specific power consumption. The offered system had a lot of innovative design features like, latest generation SKS dynamic separator at lower level to reduce the overall building height, reduced recirculation load on bucket elevator and reduced dust nuisance with the orientation of RP above V-separator. The fresh feed is put to RP first and the roller press discharge material enters the V-Separator. The material is then separated in SKS Separator, The very coarse fraction is discharged at the bottom end of the SKS separator, entering the feed bin of the roller press for further grinding.
The finished product is separated by SKS Rotor and collected in the baghouse. A reduced recirculation load on the bucket elevator, reduced dust nuisance with the orientation of the roller press above the V-separator, and less dedusting equipment due to the system’s self-venting mechanism in the riser of the separator. Figure 1 gives the configuration of the system offered and remains the key highlights of the system.
The focus to use roller press in finish grinding to get maximum energy advantage as compared to any other grinding technology is taking an edge day by day. Apart from electrical energy focus the offered roller press stud surface has minimum wear and offers trouble and maintenance free operation. The stud technology is a boon for slag grinding wherein Tungsten Carbide Studs are fixed on the roller surface by pressing in pre-drilled rollers, which offers autogenous grinding and minimum wear. The life expected out of these roller surfaces varies from 25000 to 40000 hours of operations without any surface maintenance. Figure 2 gives a picture of a stud surface roller.

Operational performance
The operating results of the slag grinding system with the roller press in finish mode are summarised in Figure 3. As can be seen, the very purpose of opting for roller press technology for slag finish grinding was significant savings in electrical energy consumption compared to other technologies and were successfully achieved. Furthermore, after stabilisation within months’ time the production figures recorded were higher than the original guaranteed parameters.

Conclusion
JSW Cement uses superior quality slag produced at its steel manufacturing plant, conforming to IS: 12089 standards for producing PSC. It is created with a combination of upto 45- 50 per cent slag, 45 per cent – 50 per cent clinker, and 3-5 per cent gypsum. PSC has been voted as the most suitable cement for mass construction because of its low heat of hydration. At present, carbon footprints of JSW are the lowest per tonne of cementitious products produced by the company.


During the year 2020-21, JSW Cement’s overall average net scope-1 CO2 emissions is 200 kg CO2/tonne of cementitious material, which is best in the industry. The steps to this achievement definitely goes to the meticulous approach of methodologies and technologies adopted to produce the desired quality of cementitious materials. Today, slag
grinding acceptance of roller press in finish grinding is well recognised throughout the cement industry. In the case of slag grinding, acceptance of roller press in finish grinding is well recognised. It offers a distinct advantage of saving of about 6-7 Kwh/t as compared to Vertical Roller Mill at 4200 Blaine. KHD has sold 27 Sag Grinding Circuits and maintains about 70 per cent market share in slag grinding in India. The advantage comes due to hardness of slag and pressure grinding in roller press instead of attrition and low pressure in Vertical Roller Press. The moisture issue is also tackled with the problem of coating by incorporating a V-separator below the roller press.

Concrete

Adani’s Strategic Emergence in India’s Cement Landscape

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Milind Khangan, Marketing Head, Vertex Market Research, sheds light on Adani’s rapid cement consolidation under its ‘One Business, One Company’ strategy while positioning it to rival UltraTech, and thus, shaping a potential duopoly in India’s booming cement market.

India is the second-largest cement-producing country in the world, following China. This expansion is being driven by tremendous public investment in the housing and infrastructure sectors. The industry is accelerating, with a boost from schemes such as PM Gati Shakti, Bharatmala, and the Vande Bharat corridors. An upsurge in affordable housing under the Pradhan Mantri Awas Yojana (PMAY) further supports this expansion. In May 2025, local cement production increased about 9 per cent from last year to about 40 million metric tonnes for the month. The combined cement capacity in India was recorded at 670 million metric tonnes in the 2025 fiscal year, according to the Cement Manufacturers’ Association (CMA). For the financial year 2026, this is set to grow by another 9 per cent.
In spite of the growing demand, the Indian cement industry is highly competitive. UltraTech Cement (Aditya Birla Group) is still the market leader with domestic installed capacity of more than 186 MTPA as on 2025. It is targeted to achieve 200 MTPA. Adani Cement recently became a major player and is now India’s second-largest cement company. It did this through aggressive consolidation, operational synergies, and scale efficiencies. Indian players in the cement industry are increasingly valuing operational efficiency and sustainability. Some of the strategies with high impact are alternative fuels and materials (AFR) adoption, green cement expansion, and digital technology investments to offset changing regulatory pressure and increasing energy prices.

Building Adani Cement brand
Vertex Market Research explains that the Adani Group is executing a comprehensive reorganisation and consolidation of its cement business under the ‘One Business, One Company’ strategy. The plan is to integrate its diversified holdings into one consolidated corporate entity named Adani Cement. The focus is on operating integration, governance streamlining, and cost reduction in its expanding cement business.
Integration roadmap and key milestones:

  • September 2022: The consolidation process started with the $6.4 billion buyout of Holcim’s majority stakes in Ambuja Cements and ACC, with Ambuja becoming the focal point of the consolidation.
  • December 2023: Bought Sanghi Industries to strengthen the firm’s presence in western India.
  • August 2024: Added Penna Cement to the portfolio, improving penetration of the southern market of India.
  • April 2025: Further holding addition in Orient Cement to 46.66 per cent by purchasing the same from CK Birla Group, becoming the promoter with control.
  • Ambuja Cements amalgamated with Adani Cement: This was sanctioned by the NCLT on 18th July 2025 with effect from April 1, 2024. This amalgamation brings in limestone reserves and fresh assets into Ambuja.
  • Subject to Sanghi and Penna merger with Ambuja: Board approvals in December 2024 with the aim to finish between September to December 2025.
  • Ambuja-ACC future integration: The latter is being contemplated as the final step towards consolidation.
  • Orient Cement: It would serve as a principal manufacturing facility following the merger.

Scale, capacity expansion and market position
In financial year-2025, Adani Cement, including Ambuja, surpassed 100 MTPA. This makes it one of the world’s top ten cement companies. Along with ACC’s operations, it is now firmly placed as India’s second-largest cement company. In FY25, the Adani group’s sales volume per annum clocked 65 million metric tonnes. Adani Group claims that it now supplies close to 30 per cent of the cement consumed in India’s homes and infrastructure as of June 2025.
The organisation is pursuing aggressive brownfield expansion:

  • By FY 2026: Reach 118 MTPA
  • By FY 2028: Target 140 MTPA

These goals will be driven by commissioning new clinker and grinding units at key sites, with civil and mechanical works underway.
As of 2024, Adani Cement had its market share pegged at around 14 to 15 per cent, with an ambition to scale this up to 20 per cent by FY?2028, emerging as a potent competitor to UltraTech’s 192?MTPA capacity (186 domestic and overseas).

Strategic advantages and competitive benefits
The consolidation simplifies decision-making by reducing legal entities, centralising oversight, and removing redundant functions. This drives compliance efficiency and transparent reporting. Using procurement power for raw materials and energy lowers costs per ton. Integrated logistics with Adani Ports and freight infrastructure has resulted in an estimated 6 per cent savings in logistics. The group aims for additional savings of INR 500 to 550 per tonne by FY 2028 by integrating green energy, using alternative fuel resources, and improving sourcing methods.

Market coverage and brand consistency
Brand integration under one strategy will provide uniform product quality and easier distribution networks. Integration with Orient Cement’s dealer base, 60 per cent of which already distributes Ambuja/ACC products, enhances outreach and responsiveness.
By having captive limestone reserves at Lakhpat (approximately 275 million tonnes) and proposed new manufacturing facilities in Raigad, Maharashtra, Adani Cement derives cost advantage, raw material security, and long-term operational robustness.

Strategic implications and risks
Consolidation at Adani Cement makes it not just a capacity leader but also an operationally agile competitor with the ability to reap digital and sustainability benefits. Its vertically integrated platform enables cost leadership, market responsiveness, and scalability.

Challenges potentially include:

  • Integration challenges across systems, corporate cultures, and plant operations
  • Regulatory sanctions for pending mergers and new capacity additions
  • Environmental clearances in environmentally sensitive areas and debt management with input price volatility

When materialised, this revolution would create a formidable Adani–UltraTech duopoly, redefining Indian cement on the basis of scale, innovation, and sustainability. India’s leading four cement players such as Adani (ACC and Ambuja), Dalmia Cement, Shree Cement, and UltraTech are expected to dominate the cement market.

Conclusion
Adani’s aggressive consolidation under the ‘One Business, One Company’ strategy signals a decisive shift in the Indian cement industry, positioning the group as a formidable challenger to UltraTech and setting the stage for a potential duopoly that could dominate the sector for years to come. By unifying operations, leveraging economies of scale, and securing vertical integration—from raw material reserves to distribution networks—Adani Cement is building both capacity and resilience, with clear advantages in cost efficiency, market reach, and sustainability. While integration complexities, regulatory hurdles, and environmental approvals remain key challenges, the scale and strategic alignment of this consolidation promise to redefine competition, pricing dynamics, and operational benchmarks in one of the world’s fastest-growing cement markets.

About the author:
Milind Khangan is the Marketing Head at Vertex Market Research and comes with over five years of experience in market research, lead generation and team management.

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Concrete

Precision in Motion: A Deep Dive into PowerBuild’s Core Gear Series

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PowerBuild’s flagship Series M, C, F, and K geared motors deliver robust, efficient, and versatile power transmission solutions for industries worldwide.

Products – M, C, F, K: At the heart of every high-performance industrial system lies the need for robust, reliable, and efficient power transmission. PowerBuild answers this need with its flagship geared motor series: M, C, F, and K. Each series is meticulously engineered to serve specific operational demands while maintaining the universal promise of durability, efficiency, and performance.
Series M – Helical Inline Geared Motors: Compact and powerful, the Series M delivers exceptional drive solutions for a broad range of applications. With power handling up to 160kW and torque capacity reaching 20,000 Nm, it is the trusted solution for industries requiring quiet operation, high efficiency, and space-saving design. Series M is available with multiple mounting and motor options, making it a versatile choice for manufacturers and OEMs globally.
Series C – Right Angled Heli-Worm Geared Motors: Combining the benefits of helical and worm gearing, the Series C is designed for right-angled power transmission. With gear ratios of up to 16,000:1 and torque capacities of up to 10,000 Nm, this series is optimal for applications demanding precision in compact spaces. Industries looking for a smooth, low-noise operation with maximum torque efficiency rely on Series C for dependable performance.
Series F – Parallel Shaft Mounted Geared Motors: Built for endurance in the most demanding environments, Series F is widely adopted in steel plants, hoists, cranes, and heavy-duty conveyors. Offering torque up to 10,000 Nm and high gear ratios up to 20,000:1, this product features an integral torque arm and diverse output configurations to meet industry-specific challenges head-on.
Series K – Right Angle Helical Bevel Geared Motors: For industries seeking high efficiency and torque-heavy performance, Series K is the answer. This right-angled geared motor series delivers torque up to 50,000 Nm, making it a preferred choice in core infrastructure sectors such as cement, power, mining, and material handling. Its flexibility in mounting and broad motor options offer engineers’ freedom in design and reliability in execution.
Together, these four series reflect PowerBuild’s commitment to excellence in mechanical power transmission. From compact inline designs to robust right-angle drives, each geared motor is a result of decades of engineering innovation, customer-focused design, and field-tested reliability. Whether the requirement is speed control, torque multiplication, or space efficiency, Radicon’s Series M, C, F, and K stand as trusted powerhouses for global industries.

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Concrete

Driving Measurable Gains

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Klüber Lubrication India’s Klübersynth GEM 4-320 N upgrades synthetic gear oil for energy efficiency.

Klüber Lubrication India has introduced a strategic upgrade for the tyre manufacturing industry by retrofitting its high-performance synthetic gear oil, Klübersynth GEM 4-320 N, into Barrel Cold Feed Extruder gearboxes. This smart substitution, requiring no hardware changes, delivered energy savings of 4-6 per cent, as validated by an internationally recognised energy audit firm under IPMVP – Option B protocols, aligned with
ISO 50015 standards.

Beyond energy efficiency, the retrofit significantly improved operational parameters:

  • Lower thermal stress on equipment
  • Extended lubricant drain intervals
  • Reduction in CO2 emissions and operational costs

These benefits position Klübersynth GEM 4-320 N as a powerful enabler of sustainability goals in line with India’s Business Responsibility and Sustainability Reporting (BRSR) guidelines and global Net Zero commitments.

Verified sustainability, zero compromise
This retrofit case illustrates that meaningful environmental impact doesn’t always require capital-intensive overhauls. Klübersynth GEM 4-320 N demonstrated high performance in demanding operating environments, offering:

  • Enhanced component protection
  • Extended oil life under high loads
  • Stable performance across fluctuating temperatures

By enabling quick wins in efficiency and sustainability without disrupting operations, Klüber reinforces its role as a trusted partner in India’s evolving industrial landscape.

Klüber wins EcoVadis Gold again
Further affirming its global leadership in responsible business practices, Klüber Lubrication has been awarded the EcoVadis Gold certification for the fourth consecutive year in 2025. This recognition places it in the top three per cent
of over 150,000 companies worldwide evaluated for environmental, ethical and sustainable procurement practices.
Klüber’s ongoing investments in R&D and product innovation reflect its commitment to providing data-backed, application-specific lubrication solutions that exceed industry expectations and support long-term sustainability goals.

A trusted industrial ally
Backed by 90+ years of tribology expertise and a global support network, Klüber Lubrication is helping customers transition toward a greener tomorrow. With Klübersynth GEM 4-320 N, tyre manufacturers can take measurable, low-risk steps to boost energy efficiency and regulatory alignment—proving that even the smallest change can spark a significant transformation.

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