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Economy & Market

Logistics: A cost-effective approach

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With the industry showing a downward trend in profit margins, better logistics management proves beneficial to many of the cement manufacturers. Nitin Madkaikar, Economist, FirstInfo Centre, explores the various modes of logistics that can provide a cost-effective means of cement transportation.

Cement, being a bulk commodity, transporting is a costly affair. The selling and distribution costs account for around 18 per cent of sales revenues. In 2009-10, top 30 cement companies spent more than Rs 10,000 crore to carry cement to the consumer. The domestic cement industry has been making continuous efforts to cut its logistic costs.

At the time when the industry was entering into the downside of the cycle, with profit margins coming down to 20-25 per cent from 35-40 per cent, better logistics management proved beneficial to many of the cement manufacturers. Using more railway routes than roads, shrinking lead distance (distance between the manufacturing facility and market) and opting for sea-routes wherever possible were some of the ways the industry explored. Currently, for every 50-kg bag of cement, the logistic cost comes to around Rs 18-25 by road and Rs 12-15 by the railway, depending on the distance. For example, the country’s third-largest cement maker, Ambuja Cements, opted for sea-routes to transport its cement from Gujarat to southern market.

Today, 70 per cent of the cement movement worldwide is by sea compared to just 1-2 per cent in India. However, the scenario is changing with most of the big players like L&T, ACC and Grasim having set up their bulk terminals.

About 3 per cent of the gross revenue is spent on inward logistics while outward logistics accounts for another bulk of 15 per cent. Inward logistics include, coal and limestone transportation, while outward logistics is mostly the final product cement. Some companies also incur outbound logistics cost on transporting clinker to their grinding plants. Plants that are closer to the collieries, the inbound transportation costs are less. For plants located far away from the collieries they have the option to import coal.

While the freight cost could be optimised on the imported coal through usage of company’s own ships for part of the quantity, the international prices of imported coal and its volatility together with the strengthening of the dollar against rupee could derail this. This could impact the delivery prices of imported coal and also the cost of production.

In case of final product, the costs of handling and secondary movement are very high. Although transportation by sea is the cheapest option, unless there is right connectivity from the port to the consuming centre the gains are minimum.

Companies, which have plants located closer to the markets as well as to the source of raw materials have an advantage over their peers, as this leads to lower freight costs. Also, plants located in coastal belts find it much cheaper to transport cement by the sea route in order to cater to the coastal markets such as Mumbai and the states of Gujarat and Tamil Nadu.

Checking logistics costs is an ongoing process for the cement companies. Many are trying to reduce the costs by around 5-7 per cent by optimising the distance of transport. Statistics suggest that about 45 per cent of the cement produced in the country is being transported by the railway. Cement makers prefer roads for shorter distances.

Looking ahead

With demand for cement expected to remain strong in 2011 with a growth of over 10 per cent, the logistic activities are in for a boom. In the 2011-12 fiscal, additional cement capacity of 27 million tonne is likely to go on stream. With the bulk of the capacities coming up in the South, the demand supply imbalance in 2011 would continue to be a cause of concern in the South, though it is expected to improve or remain in a status quo position in other regions.

The dwindling availability of coal linkage and the move to sell high grade indigenous coal at international prices are likely to impact power and fuel costs. The prices of other major inputs mainly slag, gypsum and fly ash are likely to further harden in 2011, whilst the increase in petroleum product prices would continue to impact freight costs. A shortage in railway wagon availability may adversely impact despatches in peak months.

The Indian cement industry is the second largest in the world after China, with a total capacity of close to 300 million tonne and plays a major role in the development of the Nation. Therefore, considering the role of Industry in the economy’s development, it is necessary to incentivise bulk transportation and thereby optimize cost, save fuel and reducing carbon emission while ensuring safe carriage.

Railways to levy surcharge

Indian Railways will levy a surcharge of up to 7 per cent from 1 April to earn a higher freight earning during busy season. The move is likely to add to the inflationary pressure on the economy even as finance ministry is expecting a lower inflation during 2011-12.

As per the railway decision, a surcharge of 5 per cent will be charged on coal and coke group, while all other commodities will attract a busy season charge of 7 per cent. Container traffic has been exempt from any such charge. Railway considers the entire year barring July-September of every year as busy period.

In 2010-11 also, railways had increased freight rates of iron ore, coal, sugar, cement, steel, potash, coke and some petroleum products.

Railways has also decided to levy a congestion charge of flat 20 per cent on traffic to neighbouring Bangladesh and Pakistan. The measure has been taken to encourage faster clearance of rakes at the borders.

Logistics cost reduction cannot be the sole objective and seen in isolation by the cement industry. The most important part is the service. At the end of the day, if one is unable to serve the customer he will never be in the industry. – Rajeev Mehta

How do you evaluate logistics in cement industry?
Logistics costs are going to come down provided one is on the right track. If he chases cost in isolation by just working in cost reduction, he cannot reduce cost in an inflationary world. The process of cost negotiations of olden days are over now. Under negotiation, one arrived only at the lowest quoted price and was content assumingly to have reduced the cost. Here, he only arrives at the best negotiated prices but not at a best cost. Today the concept of negotiation is no more prevalent. If one wants to work the truck freight to a particular destination, the right cost should take into account all the statutory duties, all the toll taxes, fuel cost, and all other allied cost, cost of vehicles, turnaround efficiency, everything. These known efficiency parameters should be arrived at the right price. Here the cost can be reduced only by increasing the efficiency.

The second most important factor is to use technology to the helm. The real time visibility is the key to success. Through technology one can find whether the truck is detained, which route is appropriate, entry restriction, etc. Technology plays a key role in aligning these activities.

What are functional bottlenecks?
In the old system, the key was to have a godown and the evacuation quantity used to be very small. Today one rack carry 3,800 metric tonne as against 1,700 to 1,800 metric tonne earlier. Now the size has almost doubled. Unfortunately in India, evacuation resources have not kept pace with the requirement. Most goods sheds are under control of the union, the fleet size has not expanded as per the growth of the cement business, labour is controlled by the union, labour availability has not increased as per the increment in volumes.

There is no mechanisation process in India, in spite of the wishes of the industry. Here the government has to play an active role. Industry on its own cannot make mechanisation happen. It should be a collaborative effort. Mechanisation, in the short run will create turbulence, but in the long run everybody will be benefitted. People need to be educated and prepared to face these short term turbulences.

What is your estimate of losses due to prevalent evacuation system
Mechanisation can alone reduce cost by a minimum of 10 per cent. The company could currently evacuate 3,000 tonne by manual route from goods shed, just because systems are not mechanised. Going ahead, labour in India will become a scare commodity, so one should be prepared for such eventuality in 2015-2020. The industry will have to join hands and take up a pilot project. It has to be a collaborative effort.

This has driven the logistics to almost 15 per cent of total cost which is very high by global standards given the volumes.

Logistics cost in India is going to come down a) efficiency b) technology is the key c) mechanisation is another area d) last but not the least, people should know the right cost. There has to be organised movement of transport. Every truck coming to Mumbai should log-in at the octroi point, when they are going back from Mumbai and in which destination they want to go. Those people who want to send material to that location can also log-in. So it can be marriage of both, need business and who are willing to give business. Today only brokers are there in this field. They are making money by non-visibility of information. That cost of brokers is unnecessarily borne by the company and the end-user. Make a transportation where every information is visible. Let people log-in and say we are interested in transporting our good.

Railways haul about 40 per cent of cement, what are the bottlenecks there?
Railways has very good system, which gives real time visibility. On technology front, the railways has done a great job. Per se, for any bottleneck railways cannot be blamed. It continues to be a socialistic set-up and at the pace at which the economy is growing the railways has limited resources. Railways have increased the number of trains but where are the tracks. This has to move parallel. Every year railways add 100 of passenger and goods trains, running on the same track. It is not railway that is slow it is a general problem in the country. The time taken to conceive a project and to execute that project is huge.

What are the inwards and outwards logistics, the cost proportion?
In cement industry, inward logistics costs are about three per cent of gross revenue and outbound close to 15 per cent. Clinker going to grinder it is outward.

What are preferred modes of transportation of cement?
Roads are cheaper up to a lead of 300 km, over which it is railways. Sea route is the most economical. But in India sea route is viable only on the west coast, where limestone and markets, both are available. On the east cost the problem is that the regions does not have limestone. In Gujarat limestone is available bang on the coast. Sea route is economical but not available across.

What are the new challenges in road transport?
The toll taxes are a concern now on roads. There has been a progressive increase in the toll rates and the number of points. On a stretch on 200 km there a 5-6 toll points, which hinders speed. This has resulted in increased cost and time. There is an urgent need for high tech toll booths.

What is the focus on logistics going ahead?
Every industry has its own efficiency levels and are trying to address them in different ways. In cement, per se, volumes have gone up and in spite of all these limitations the thrust is to move towards better services.

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Economy & Market

Smart Pumping for Rock Blasting

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SEEPEX introduces BN pumps with Smart Joint Access (SJA) to improve efficiency, reliability, and inspection speed in demanding rock blasting operations.
Designed for abrasive and chemical media, the solution supports precise dosing, reduced downtime, and enhanced operational safety.

SEEPEX has introduced BN pumps with Smart Joint Access (SJA), engineered for the reliable and precise transfer of abrasive, corrosive, and chemical media in mining and construction. Designed for rock blasting, the pump features a large inspection opening for quick joint checks, a compact footprint for mobile or skid-mounted installations, and flexible drive and material options for consistent performance and uptime.

“Operators can inspect joints quickly and rely on precise pumping of shear-sensitive and abrasive emulsions,” said Magalie Levray, Global Business Development Manager Mining at SEEPEX. “This is particularly critical in rock blasting, where every borehole counts for productivity.” Industry Context

Rock blasting is essential for extracting hard rock and shaping safe excavation profiles in mining and construction. Accurate and consistent loading of explosive emulsions ensures controlled fragmentation, protects personnel, and maximizes productivity. Even minor deviations in pumping can cause delays or reduce product quality. BN pumps with SJA support routine maintenance and pre-operation checks by allowing fast verification of joint integrity, enabling more efficient operations.

Always Inspection Ready

Smart Joint Access is designed for inspection-friendly operations. The large inspection opening in the suction housing provides direct access to both joints, enabling rapid pre-operation checks while maintaining high operational reliability. Technicians can assess joint condition quickly, supporting continuous, reliable operation.

Key Features

  • Compact Footprint: Fits truck-mounted mobile units, skid-mounted systems, and factory installations.
  • Flexible Drive Options: Compact hydraulic drive or electric drive configurations.
  • Hydraulic Efficiency: Low-displacement design reduces oil requirements and supports low total cost of ownership.
  • Equal Wall Stator Design: Ensures high-pressure performance in a compact footprint.
  • Material Flexibility: Stainless steel or steel housings, chrome-plated rotors, and stators in NBR, EPDM, or FKM.

Operators benefit from shorter inspection cycles, reliable dosing, seamless integration, and fast delivery through framework agreements, helping to maintain uptime in critical rock blasting processes.

Applications – Optimized for Rock Blasting

BN pumps with SJA are designed for mining, tunneling, quarrying, civil works, dam construction, and other sectors requiring precise handling of abrasive or chemical media. They provide robust performance while enabling fast, reliable inspection and maintenance.With SJA, operators can quickly access both joints without disassembly, ensuring emulsions are transferred accurately and consistently. This reduces downtime, preserves product integrity, and supports uniform dosing across multiple bore holes.

With the Smart Joint Access inspection opening, operators can quickly access and assess the condition of both joints without disassembly, enabling immediate verification of pump readiness prior to blast hole loading. This allows operators to confirm that emulsions are transferred accurately and consistently, protecting personnel, minimizing product degradation, and maintaining uniform dosing across multiple bore holes.

The combination of equal wall stator design, compact integration, flexible drives, and progressive cavity pump technology ensures continuous, reliable operation even in space-limited, high-pressure environments.

From Inspection to Operation

A leading explosives provider implemented BN pumps with SJA in open pit and underground operations. By replacing legacy pumps, inspection cycles were significantly shortened, allowing crews to complete pre-operation checks and return mobile units to productive work faster. Direct joint access through SJA enabled immediate verification, consistent emulsion dosing, and reduced downtime caused by joint-related deviations.

“The inspection opening gives immediate confidence that each joint is secure before proceeding to bore holes,” said a site technician. “It allows us to act quickly, keeping blasting schedules on track.”

Framework agreements ensured rapid pump supply and minimal downtime, supporting multi-site operations across continents

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Concrete

Digital process control is transforming grinding

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Satish Maheshwari, Chief Manufacturing Officer, Shree Cement, delves into how digital intelligence is transforming cement grinding into a predictive, stable, and energy-efficient operation.

Grinding sits at the heart of cement manufacturing, accounting for the largest share of electrical energy consumption. In this interview, Satish Maheshwari, Chief Manufacturing Officer, Shree Cement, explains how advanced grinding technologies, data-driven optimisation and process intelligence are transforming mill performance, reducing power consumption and supporting the industry’s decarbonisation goals.

How has the grinding process evolved in Indian cement plants to meet rising efficiency and sustainability expectations?
Over the past decade, Indian cement plants have seen a clear evolution in grinding technology, moving from conventional open-circuit ball mills to high-efficiency closed-circuit systems, Roller Press–Ball Mill combinations and Vertical Roller Mills (VRMs). This shift has been supported by advances in separator design, improved wear-resistant materials, and the growing use of digital process automation. As a result, grinding units today operate as highly controlled manufacturing systems where real-time data, process intelligence and efficient separation work together to deliver stable and predictable performance.
From a sustainability perspective, these developments directly reduce specific power consumption, improve equipment reliability and lower the carbon footprint per tonne of cement produced.

How critical is grinding optimisation in reducing specific power consumption across ball mills and VRMs?
Grinding is the largest consumer of electrical energy in a cement plant, which makes optimisation one of the most effective levers for improving energy efficiency. In ball mill systems, optimisation through correct media selection, charge design, diaphragm configuration, ventilation management and separator tuning can typically deliver power savings of 5 per cent to 8 per cent. In VRMs, fine-tuning airflow balance, grinding pressure, nozzle ring settings, and circulating load can unlock energy reductions in the range of 8 per cent to 12 per cent. Across both systems, sustained operation under stable conditions is critical. Consistency in mill loading and operating parameters improves quality control, reduces wear, and enables long-term energy efficiency, making stability a key operational KPI.

What challenges arise in maintaining consistent cement quality when using alternative raw materials and blended compositions?
The increased use of alternative raw materials and supplementary cementitious materials (SCM) introduces variability in chemistry, moisture, hardness, and loss on ignition. This variability makes it more challenging to maintain consistent fineness, particle size distribution, throughput and downstream performance parameters such as setting time, strength development and workability.
As clinker substitution levels rise, grinding precision becomes increasingly important. Even small improvements in consistency enable higher SCM utilisation without compromising cement performance.
Addressing these challenges requires stronger feed homogenisation, real-time quality monitoring and dynamic adjustment of grinding parameters so that output quality remains stable despite changing input characteristics.

How is digital process control changing the way grinding performance is optimised?
Digital process control is transforming grinding from an operator-dependent activity into a predictive, model-driven operation. Technologies such as online particle size and residue analysers, AI-based optimisation platforms, digital twins for VRMs and Roller Press systems, and advanced process control solutions are redefining how performance is managed.
At the same time, workforce roles are evolving. Operators are increasingly focused on interpreting data trends through digital dashboards and responding proactively rather than relying on manual interventions. Together, these tools improve mill stability, enable faster response to disturbances, maintain consistent fineness, and reduce specific energy consumption while minimising manual effort.

How do you see grinding technologies supporting the industry’s low-clinker and decarbonisation goals?
Modern grinding technologies are central to the industry’s decarbonisation efforts. They enable higher incorporation of SCMs such as fly ash, slag, and limestone, improve particle fineness and reactivity, and reduce overall power consumption. Efficient grinding makes it possible to maintain consistent cement quality at lower clinker factors. Every improvement in energy intensity and particle engineering directly contributes to lower CO2 emissions.
As India moves toward low-carbon construction, precision grinding will remain a foundational capability for delivering sustainable, high-performance cement aligned with national and global climate objectives.

How much potential does grinding optimisation hold for immediate energy
and cost savings?
The potential for near-term savings is substantial. Without major capital investment, most plants can achieve 5 per cent to 15 per cent power reduction through measures such as improving separator efficiency, optimising ventilation, refining media grading, and fine-tuning operating parameters.
With continued capacity expansion across India, advanced optimisation tools will help ensure that productivity gains are not matched by proportional increases in energy demand. Given current power costs, this translates into direct and measurable financial benefits, making grinding optimisation one of the fastest-payback operational initiatives available to cement manufacturers today.

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Concrete

Refractory demands in our kiln have changed

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Radha Singh, Senior Manager (P&Q), Shree Digvijay Cement, points out why performance, predictability and life-cycle value now matter more than routine replacement in cement kilns.

As Indian cement plants push for higher throughput, increased alternative fuel usage and tighter shutdown cycles, refractory performance in kilns and pyro-processing systems is under growing pressure. In this interview, Radha Singh, Senior Manager (P&Q), Shree Digvijay Cement, shares how refractory demands have evolved on the ground and how smarter digital monitoring is improving kiln stability, uptime and clinker quality.

How have refractory demands changed in your kiln and pyro-processing line over the last five years?
Over the last five years, refractory demands in our kiln and pyro line have changed. Earlier, the focus was mostly on standard grades and routine shutdown-based replacement. But now, because of higher production loads, more alternative fuels and raw materials (AFR) usage and greater temperature variation, the expectation from refractory has increased.
In our own case, the current kiln refractory has already completed around 1.5 years, which itself shows how much more we now rely on materials that can handle thermal shock, alkali attack and coating fluctuations. We have moved towards more stable, high-performance linings so that we don’t have to enter the kiln frequently for repairs.
Overall, the shift has been from just ‘installation and run’ to selecting refractories that give longer life, better coating behaviour and more predictable performance under tougher operating conditions.

What are the biggest refractory challenges in the preheater, calciner and cooler zones?
• Preheater: Coating instability, chloride/sulphur cycles and brick erosion.
• Calciner: AFR firing, thermal shock and alkali infiltration.
• Cooler: Severe abrasion, red-river formation and mechanical stress on linings.
Overall, the biggest challenge is maintaining lining stability under highly variable operating conditions.

How do you evaluate and select refractory partners for long-term performance?
In real plant conditions, we don’t select a refractory partner just by looking at price. First, we see their past performance in similar kilns and whether their material has actually survived our operating conditions. We also check how strong their technical support is during shutdowns, because installation quality matters as much as the material itself.
Another key point is how quickly they respond during breakdowns or hot spots. A good partner should be available on short notice. We also look at their failure analysis capability, whether they can explain why a lining failed and suggest improvements.
On top of this, we review the life they delivered in the last few campaigns, their supply reliability and their willingness to offer plant-specific custom solutions instead of generic grades. Only a partner who supports us throughout the life cycle, which includes selection, installation, monitoring and post-failure analysis, fits our long-term requirement.

Can you share a recent example where better refractory selection improved uptime or clinker quality?
Recently, we upgraded to a high-abrasion basic brick at the kiln outlet. Earlier we had frequent chipping and coating loss. With the new lining, thermal stability improved and the coating became much more stable. As a result, our shutdown interval increased and clinker quality remained more consistent. It had a direct impact on our uptime.

How is increased AFR use affecting refractory behaviour?
Increased AFR use is definitely putting more stress on the refractory. The biggest issue we see daily is the rise in chlorine, alkalis and volatiles, which directly attack the lining, especially in the calciner and kiln inlet. AFR firing is also not as stable as conventional fuel, so we face frequent temperature fluctuations, which cause more thermal shock and small cracks in the lining.
Another real problem is coating instability. Some days the coating builds too fast, other days it suddenly drops, and both conditions impact refractory life. We also notice more dust circulation and buildup inside the calciner whenever the AFR mix changes, which again increases erosion.
Because of these practical issues, we have started relying more on alkali-resistant, low-porosity and better thermal shock–resistant materials to handle the additional stress coming from AFR.

What role does digital monitoring or thermal profiling play in your refractory strategy?
Digital tools like kiln shell scanners, IR imaging and thermal profiling help us detect weakening areas much earlier. This reduces unplanned shutdowns, helps identify hotspots accurately and allows us to replace only the critical sections. Overall, our maintenance has shifted from reactive to predictive, improving lining life significantly.

How do you balance cost, durability and installation speed during refractory shutdowns?
We focus on three points:
• Material quality that suits our thermal profile and chemistry.
• Installation speed, in fast turnarounds, we prefer monolithic.
• Life-cycle cost—the cheapest material is not the most economical. We look at durability, future downtime and total cost of ownership.
This balance ensures reliable performance without unnecessary expenditure.

What refractory or pyro-processing innovations could transform Indian cement operations?
Some promising developments include:
• High-performance, low-porosity and nano-bonded refractories
• Precast modular linings to drastically reduce shutdown time
• AI-driven kiln thermal analytics
• Advanced coating management solutions
• More AFR-compatible refractory mixes

These innovations can significantly improve kiln stability, efficiency and maintenance planning across the industry.

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