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Clinker grinding technology in cement manufacturing

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Clinker grinding technology is the most energy-intensive process in cement manufacturing. Traditionally, it was treated as "low on technology" and "high on energy" as grinding circuits use more than 60 per cent of total energy consumed and account for most of the manufacturing cost.

Since the increasing energy cost started burning the benefits significantly, the grinding technology came under radar of innovation and technology transformation. Focus shifted to being energy efficient and cost reduction. Population of traditional stand-alone two chamber and three chamber ball mills started slowing down getting replaced by vertical roller mills, high pressure grinding rolls (HPGR), pre-grinders, HoroMills along with high-efficiency dynamic separators, static separator (V-sep) with various innovative process combinations. Technology providers used this opportunity to create a business edge. As a result, substantial reduction in energy consumption levels was achieved successful.

Transformation in product portfolio emerged as blessing in disguise to the energy scenario. Change of traditional OPC into PPC, PSC and composite cement was a game changer. PPC captured widespread market giving breather to grinding energy situation as composition bears 35 per cent of fly ash whose grindability is much lower than clinker. This became profitable proposition not only for volume increase but also for reduced energy. Similarly, PSC proved profitable for the plants having resource logistic advantage. PSC manufacturing technology, varied from inter grinding to separate grinding, gave cost advantage due to clinker factor utilisation. The production of composite cements has been increasing for reasons concerned with process economics, energy reduction, ecology (mostly reduction of CO2 emission), conservation of resources and product quality/diversity. The most important properties of cement, such as strength and workability, are affected by its specific surface and by the fineness and width of the particle-size distribution. These can be modified to some extent by the equipment used in the grinding circuit, including its configuration and control.

Ball mill grinding
Evolution of ball mills was the starting point in communition theory adopted widely in cement manufacturing. Size reduction process of bulk solids acquires major part of cement process. This started from wet grinding in three chambers mills to latest mono chamber semi finished ball mills.

Most used systems are two chamber ball mills in finished mode. Grinding in these mills occur due to the effect of cataracting and cascading motion of grinding balls. Crucial factors that influence the grinding efficiency are:

  • Liner design
  • Circumferential velocity of the mill
  • Shape, size and weight of the grinding media
  • Friction between the lining and the grinding media
  • Friction within the mill charge itself

Technology innovation made use of above factors; however results obtained were successful to the limited extent. Liners design advanced from Lorian liners to step liners to double wave to supplier customised patterns having less weight. Similarly classifiers changed from traditional deep wave, conveying pattern to thin design and bolt less, low weight liners. Wear rate of liners and grinding media is the most cost affecting factor. Improvements in wear rates and cost savings seen from Mn-steel to Hichrome to controlled metallurgy.

Higher the percentage chrome, better the wear resistance, however lowers the hardness normally. Hence, in order to make this system cost competitive and efficient, above factors must be used and leveraged for system selection and optimisation.

Vertical roller mill technology
Vertical Roller Mill (VRM) has been the most preferred technology over ball mill grinding in terms of various efficiency factors. VRM functions four main processes of grinding technology which are: drinding, drying, separation and transportation. Grinding efficiency is the energy utilised to create specific surface of material having same chemical/mineralogical composition. This can be expressed as: Eu = (Specific surface created/specific energy used). Energy utilisation in VRM grinding is better than ball mill technology. Theo power cons of VRM = (Sp. grinding press x roller area x No. of rollers x grinding track speed x friction factor). Friction factor differs from mill to mill and material to material.

Advancements in mill capacities and technology changing fast making VRM is most versatile and efficient. For the volume sensitive market, VRM started offering higher capacities, meeting expanding market requirements with single mill. At the same time, maintenance flexibilities proved this technology the most preferred choice. Various mill OEMs have their unique design features, offering advancements in technical features.

HPGR technology
High-pressure grinding rolls (HPGRs), with key process equipment as roller press in cement industry, have struggled and conquered for acceptance as finished mode operation in raw grinding and even as pregrinder in clinker grinding technology. Many of the issues that didn’t favour their widespread use have now been gradually gaining grounds. But still, it will remain subdued in selection arguments with VRM technology. Answer for this is again follows the similar requirement of customers, high capacity systems, low cost, high reliability, ease of operation and better wear resistance factors.

Most prevailing issue in the HPGR system is "high pressure" as the name suggests. High pressure has direct benefit on grinding efficiency however, it also has got immense impact on with standablity of grinding components, metallurgy of grinding profiles, mechanical stresses on drive components, etc.

In contemplating an answer to issue of the HPGR, the status of other accepted technologies like VRM must be examined. As an example, the latest and advanced VRM technology can be considered. When a plant operation / design is being considered, every well-equipped engineer will be able to turn to numerous rules of thumb associated with these factors:

Particle size distribution will be consistent in feed
Centralised and circumferentially distributed feed is required to extract the best performance.
Profile and condition of the HPGR is critical to deliver the best performance These issues prevail in VRM also. However VRM technology is well established to handle the variety of feed PSDs. A comparison between RP and VRM on some of the merits and demerits are as given:

Roller Press Parameters
Roller Press roller diameters typically vary from 0.5 m to 2.8 m, depending on the supplies, and roll widths vary from 0.2 m to 1.8 m. The aspect ratio of the rolls also varies as a function of manufacturer. Typical HPGR throughput rates range from 20 to 3,000 tph at different applications, with installed motor power as high as 3,000 kW per roll. The roller profile is the key deciding parameter on withstanding the high pressure and giving much needed life. This has been one of the significant characteristics of rollers / Roller Presses. but solutions are now in place for adequate life of the profiles. When operating an HPGR, the two most important operating parameters are:

Operating pressure
Roll speed

The two key operating parameters are inherently linked to the following:
RP throughput
Specific pressing force
Maximum pressure between the rolls
Specific energy input
RP Throughput: The throughput can also be calculated from the continuity equation as follows:
M = L x s x u x ?c x 3.6 (EQ 2) where
s = operating gap (mm)
?c = density of the product cake (t/m3)

Specific Pressing Force
The specific pressing force is defined as the grinding force applied to the rolls (kN), divided by the diameter (m) and width (m) of the rolls. The specific pressing force has the unit of N/mm2.Fsp = F/(1,000 x D x L) where,
Fsp = specific pressing force (N/mm2)
F = applied grinding force (kN)
D = roll diameter (m)
L = roll width (m)
Maximum achievable roller force must be at least
5500 kN/m2 for raw material
6000 kN/m2 for clinker and slag

Roller press design & operation
Similar to the VRM, there are few Roller Press Technology providers with different designs and principles. Mainly, they are: KHD, Koppern, Polysius. KHD has considerable roller press population for various applications. Their standard configurations are as below:

Stud lining roller is typical and popular solution for high life usage that KHD offers for. There are many advanced versions above this.

Similarly, Koppern roller press has got latest design features catering to the clinker grinding application. The roller profile is different than the other technology and offers high life hours of operation. Standard design feature and parameters that Koppern offers is as below:

POLYCOM is the established technology in roller press supplied by Thyssenkrupp Industries. Population spread across various application for clinker grinding, raw grinding and also in combi mode and finish mode.

Conclusion
Technology evolution has given user various options and alternatives. These options help user to focus on priorities. Volume is the main criteria. Mill capacities, especially in cement grinding are changing the scenario. There were no high capacity mills in the past for clinker grinding. Advanced VRM technology started offering higher capacity levels so that capex decisions became easy for the user.

At the same time, business expansion became visible in terms of stand-alone grinding station with high capacity mills. This is playing a major role in capturing various market demands and hence cement industry growth.

Design features of Gebr Pfeiffer
Design

  • Roller and grinding bed inclined, concave grinding path
  • Rollers suspended at a pressure frame
  • Hydraulic actuated at a pressure frame
  • Pull rods inclined to absorb torque, mill housing not affected with horizontal forces
  • Swing lift device for retraction & servicing of roller
  • High-efficiency separator type SLS

Operation

  • Start-up with auxiliary drive, rollers statically on grinding table
  • Normally large size mill casing and low pressure losses of gas flow

Design features of Loesche
Design

  • Airlock in general for feeding
  • High-efficiency separator, LDC
  • Conical rollers 2, 3 according to mill capacity with S roller concept
  • Rocker arm with hydraulic cylinders to exert the roller pressure
  • Hydraulic cylinders with nitrogen accumulators
  • Modular design; hydro pneumatic units can be combined with various mill sizes according to throughput or drying needs

Operation

  • Rollers can be lifted from grinding track for low torque start-up of the mill
  • Grinding pressure and counter pressures can be adjusted to maintain smooth operation

Design features of OK
Design

  • Hydro pneumatic system for pressure exertion
  • Multiple rollers, based on capacity
  • Unique grooved roller profile
  • Curved table profile
  • Roller repositioning after wear

Operation

  • Rollers will be lifter position during start up
  • 2,4 rollers can be unloaded for partial capacity operation of special operating conditions
  • Recirculation of hot exit gas to the Mill inlet

Design features of Ploysius Quadropol
Design

  • 4 individual grinding rollers
  • Cambered geometry of roller with better wear resistance
  • Rollers can be swung out for maintenance
  • Bearing assembly located outside the grinding chamber
  • Ring craneway for maintenance works

Operation
Rollers can be unloaded for partial capacity operation of special operating conditions
Nozzle velocities can be adjusted during partial operations
High efficiency SEPOL separator
RP
Few applications in cement
grinding as semi finished mode
– Limited size?not beyond ~120 bar
+ Superior wear solutions
+ lower SEEC for dry and hard
material (Lower than VRM if in finished mode)
+ Market acceptance & early strength of cement
-Sensitive to feed variations
-More equipments & lay out space

VRM:
+ Proven solution, many applications
+ Large single units available
-Reliability of planetary reducer
+ Lower SEEC in compare with ball mill
+ Stable operation easy to achieve…
-… but often requiring water injection
-Support roller technology not successful

Feed chute placed above fixed roller, shut off gate and vertical flow control gate
Feature:

  • Easy operation Only few moving parts
  • Ensures stable operation even for high product fineness
  • Easy start up procedure in
  • combination with ROLCOX
  • Roller profile is called Hexadur. It offers increased life of profile in compare with solid weld rollers.

About the authors:
Shreekant Hulgi Managing Partner, SPV Engineers
Vijaykumar Vemuri Managing Partner, SPV Engineers

Founded in October 2018, SPV Engineers is a partnership firm specialising in process safety (risk) assessments and solutions, plant performance improvement for productivity through "Mill & Kiln Modules", energy cost reduction through electrical and thermal energy optimisation, refractory design, selection and installation services, capex projects through process engineering, plant capacity debottlenecking and feasibility studies, fuel cost reduction through AFR projects and optimisation. SPV Engineers is a sales partner for latest and advanced SpectraFlow online analyser for minute-by-minute analysis and control. SpectraFlow is an analyser with no radiation risk and no statutory safety requirements. SpectraFlow works on unique principle of NIR (Near Infra Red) technology, which is first in the industry with minimum OPEX and cost of ownership.

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Concrete

Reimagining Logistics: Spatial AI and Digital Twins

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Digital twins and spatial AI are transforming cement logistics by enabling real-time visibility, predictive decision-making, and smarter multi-modal operations across the supply chain. Dijam Panigrahi highlights how immersive AR/VR training is bridging workforce skill gaps, helping companies build faster, more efficient, and future-ready logistics systems.

As India accelerates infrastructure investment under flagship programs such as PM GatiShakti and the National Infrastructure Pipeline, the pressure on cement manufacturers to deliver reliably, efficiently, and cost-effectively has never been greater. Yet for all the modernisation that has taken place on the production side, the end-to-end logistics chain, from clinker dispatch to the last-mile delivery of bagged cement to construction sites, remains a domain riddled with inefficiencies, opacity and manual decision-making.
The good news is that a new generation of spatial computing technologies is now mature enough to transform this reality. Digital twins, spatial artificial intelligence (AI) and immersive augmented and virtual reality (AR/VR) training platforms are converging to offer cement producers something they have long sought: real-time visibility, autonomous decision-making at the operational edge, and a scalable solution to the persistent skills gap that hampers workforce performance.

Advancing logistics with digital twins
The cement supply chain is uniquely complex. A single integrated plant may manage limestone quarrying, kiln operations, grinding, packing and despatch simultaneously, with finished product flowing through rail, road, and waterway networks to reach hundreds of regional depots and distribution points. Coordinating this network using spreadsheets, siloed ERP data, and phone calls is not merely inefficient; it is a structural liability in a competitive market where delivery reliability is a key differentiator.
Digital twin technology offers a way out. A cement logistics digital twin is a continuously updated, three-dimensional virtual replica of the entire supply chain, from the truck loading bays at the plant to the inventory levels at district depots. By ingesting data from IoT sensors on conveyor belts and packing machines, GPS trackers on road and rail fleets, weighbridge records, and weather feeds, the digital twin provides planners with a single, authoritative picture of where every ton of cement is, in real time.
The value, however, goes well beyond visibility. Because the digital twin mirrors the physical system in dynamic detail, it can run scenario simulations before decisions are executed. If a primary rail corridor is disrupted, logistics managers can model alternative routing options, shifting volumes to road or coastal shipping, and assess the cost and time implications within minutes rather than days. If a packing line at the plant is running below capacity, the twin can automatically recalculate dispatch schedules downstream and alert depot managers to adjust receiving resources accordingly.
For cement companies operating multi-plant networks across geographies as varied as Rajasthan and the North-East, this kind of end-to-end situational awareness is transformative. It collapses information latency from hours to seconds, enables proactive rather than reactive logistics management, and creates the data foundation upon which AI-driven decision-making can be built. Companies that have deployed logistics digital twins in comparable heavy-industry contexts have reported reductions in transit time variability of up to 20 per cent and meaningful decreases in demurrage and detention costs, savings that flow directly to the bottom line.

Smart logistics operations
A digital twin is only as powerful as the intelligence layer that sits on top of it. This is where Spatial AI becomes the critical differentiator for cement logistics.
Traditional logistics management systems are reactive. They record what has happened and flag exceptions after the fact. Spatial AI systems, by contrast, are proactive. They continuously analyse the state of the logistics network as represented in the digital twin, identify emerging bottlenecks before they crystallise into delays, and recommend corrective actions.
At the plant gate, AI-powered visual inspection systems using spatial depth-sensing cameras can assess truck conditions, verify load integrity and confirm seal tamper status in seconds, replacing the manual checks that currently slow throughput. At the depot level, Spatial AI can monitor stock drawdown rates in real time, cross-reference them against pending customer orders and inbound shipment ETAs, and automatically trigger replenishment orders when safety thresholds are approached. In transit, AI systems processing GPS and telematics data can detect anomalous vehicle behaviour, including extended stops, route deviations, speed irregularities and alert fleet managers instantly.
Perhaps most significantly for Indian cement logistics, Spatial AI can optimise the complex multi-modal routing decisions that are central to competitive cost management. Given the variability in road quality, seasonal accessibility, rail rake availability, and regional demand patterns across India’s vast geography, the combinatorial complexity of routing optimisation is beyond human planners working with conventional tools. AI systems can process this complexity continuously and adapt routing recommendations as conditions change, reducing empty running, improving vehicle utilisation and cutting fuel costs.
The agentic dimension of modern AI is particularly relevant here. Agentic AI systems do not merely analyse and recommend; they act. In a cement logistics context, this means an AI system that can, within pre-authorised boundaries, directly communicate revised dispatch instructions to plant teams, update booking confirmations with freight forwarders and reallocate available rail rakes across plant locations, all without waiting for a human to process a recommendation and make a call. For logistics executives, this represents a genuine shift from managing a workforce to setting the rules of engagement and reviewing outcomes. The operational tempo achievable with agentic AI simply cannot be matched by human-in-the-loop systems working at the pace of emails and phone calls.

Bridging the skills gap
Technology investments in digital twins and spatial AI will deliver diminishing returns if the human workforce cannot operate effectively within the new systems they create. This is a challenge that India’s cement industry cannot afford to underestimate. The sector relies on a large, geographically dispersed workforce, including truck drivers, depot managers, despatch supervisors, fleet maintenance technicians, many of whom have been trained on paper-based processes and manual workflows. Retraining this workforce for a digitised, AI-augmented environment is a substantial undertaking, and conventional classroom or on-the-job training methods are poorly suited to the scale and pace required.
Immersive AR and VR training platforms offer a fundamentally different approach. By creating photorealistic, interactive simulations of logistics environments, such as a plant dispatch bay, a depot yard, the interior of a cement truck cab, allow workers to practice complex procedures and decision-making scenarios in a safe, consequence-free virtual environment. A depot manager can work through a simulated rail rake delay scenario, making decisions about customer allocation and communication
without the pressure of real orders being affected. A truck driver can practice the correct procedure for securing a load of bagged cement without the risk of a road incident.
The learning science case for immersive training is compelling. Studies consistently show that experiential, simulation-based learning produces faster skill acquisition and higher retention rates than didactic instruction, with some research indicating retention rates three to four times higher for VR-based training compared to classroom methods. For complex operational procedures where muscle memory and situational awareness matter as much as conceptual knowledge, the advantage of immersive simulation is even more pronounced.
Today’s leading cloud-based spatial computing platforms enable high-fidelity AR and VR training experiences to be delivered on standard mobile devices, removing the hardware barrier that has historically made immersive training impractical for large, distributed workforces. This is particularly relevant for cement companies with depots and logistics operations in tier-two and tier-three locations, where access to specialised training hardware cannot be assumed.
The integration of AR into live operations also creates ongoing learning opportunities beyond formal training programs. As an example, maintenance technicians equipped with AR overlays can receive step-by-step guidance for equipment procedures directly in their field of view, reducing error rates and service times for critical plant and fleet assets.

New strategy, new horizons
India’s cement industry is entering a period of intensifying competition, rising logistics costs, and demanding customers with shrinking tolerance for delivery variability. The companies that will lead over the next decade will be those that treat logistics not as a cost centre to be minimised, but as a strategic capability to be built.
Digital twins, spatial AI and immersive AR/VR training are not distant future technologies, they are deployable today on infrastructure that Indian cement companies already operate. The question is not whether to adopt them, but how quickly to do so and where to begin.

About the author:
Dijam Panigrahi is Co-Founder and COO of GridRaster Inc., a provider of cloud-based spatial computing platforms that power high-quality digital twin and immersive AR/VR experiences on mobile devices for enterprises. GridRaster’s technology is deployed across manufacturing, logistics and infrastructure sectors globally.

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Concrete

Beyond Despatch: Building a Strategic Supply Chain Process

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Dr SB Hegde, Global Cement Industry Leader discusses the imperative need for modern cement plants to recognise packaging and bag traceability as critical components of quality assurance and supply chain management.

In cement manufacturing, considerable attention is given to clinker quality, kiln operation, grinding efficiency and laboratory control. Yet the final stage of the process, cement packaging and despatch, often receives less strategic focus. The cement bag leaving the plant gate represents the final interface between the manufacturer and the customer. Even if clinker chemistry, fineness and strength development are well controlled, weaknesses in packaging, handling, or distribution can affect product quality before it reaches the construction site.
Operational experience from cement plants across different regions shows that packaging efficiency and bag traceability have a significant influence on product reliability, logistics performance and brand credibility. In modern cement plants, packaging systems are no longer viewed merely as despatch equipment. They are increasingly recognised as an important part of quality assurance, supply chain management and customer confidence.

Operational importance of packaging
Cement packaging systems must operate with high speed, accuracy and reliability to support efficient despatch operations. Rotary packers equipped with electronic weighing systems have improved packing accuracy and productivity in many plants.
However, maintaining operational discipline remains essential. Regular calibration of weighing systems, maintenance of packer spouts and proper bag application are important for maintaining consistent bag weights and preventing cement loss.
Operational benchmarks observed in many cement plants are summarised in Table 1.
Plants that improved calibration discipline and equipment maintenance have reported packing loss reductions of about 1 per cent to 1.5 per cent, which represents significant annual savings.

Quality assurance beyond the plant gate
Quality control in cement plants traditionally focuses on laboratory parameters such as fineness, compressive strength and chemical composition. However, the condition of cement when it reaches the customer is equally important.
Cement bags may travel through several stages including plant storage, transport vehicles, dealer warehouses and retail outlets before reaching the construction site. During this journey, cement may be exposed to humidity, rough handling and improper storage conditions.
Table 2 shows common factors that may affect cement quality during distribution.
Studies indicate that cement stored under humid conditions for long periods may experience 10 per cent to 20 per cent reduction in early strength. Therefore, maintaining proper packaging integrity and traceability is essential.

Role of cement bag traceability systems
Traceability systems allow manufacturers to identify when and where cement was produced and despatched. These systems connect packaging operations with production records and logistics data.
When customer complaints occur, traceability enables manufacturers to identify:

  • Production batch
  • Packing date and time
  • Plant location
  • Laboratory test results

Several technologies are used to implement bag traceability, as shown in Table 3.
Among these technologies, QR code authentication systems are becoming popular because customers can verify product authenticity through smartphones.

Digital transformation
Digital technologies are transforming cement packaging operations. Modern packing lines now integrate:

  • automated rotary packers
  • electronic bag counting systems
  • robotic palletising systems
  • ERP-based despatch management
  • digital supply chain monitoring

These technologies improve operational efficiency and transparency across the supply chain.
Such systems help manufacturers track cement movement across the distribution network and respond quickly to quality concerns.

Case Study: Digital Cement Bag Authentication
Several cement manufacturers in Asia and the Middle East have implemented QR code-based bag authentication systems to improve supply chain transparency.
In one integrated cement plant, QR codes were integrated into the rotary packing machine. Each cement bag received a unique digital identity linked to the production database.
The QR code contained information such as:
• plant location
• manufacturing date and time
• product type
• batch number

Customers and dealers could scan the code using a mobile application to verify product authenticity.
After implementation, the company reported:
• reduction in counterfeit bag circulation
• improved despatch data accuracy
• faster resolution of customer complaints
• better visibility of distribution networks

The system was also integrated with the company’s ERP platform, enabling real-time monitoring of production and despatch activities.

Future-Smart Packaging Systems
The future of cement packaging lies in the integration of Industry 4.0 technologies with logistics and supply chain management.
Packaging lines will increasingly become part of connected digital ecosystems linking production, quality control, despatch and market distribution.
Artificial intelligence and data analytics may also help detect abnormalities in bag weight variations, equipment performance and despatch patterns.

Global benchmark indicators
Global benchmarking of cement packaging operations highlights the increasing importance of efficiency, automation and digital traceability in modern cement supply chains. Leading cement plants are now focusing on key performance indicators such as packer availability, bag weight accuracy, packing losses, truck turnaround time and digital traceability coverage. Studies show that overall equipment effectiveness (OEE) in many industrial operations is still around 65 per cent to 70 per cent, whereas world-class plants aim for levels above 85 per cent, indicating significant scope for improvement in operational efficiency.
At the same time, the global cement packaging sector is expanding steadily, supported by growing infrastructure demand and increased emphasis on reliable and moisture-resistant packaging solutions. The cement packaging market is projected to grow steadily in the coming decade as companies adopt automation, smart packaging technologies and integrated logistics systems to improve despatch efficiency and supply chain transparency. In this context, benchmarking against global indicators helps cement plants identify performance gaps and adopt best practices such as automated bagging systems, QR-based traceability, ERP-linked despatch monitoring, and predictive maintenance of packing equipment.

Strategic Recommendations
To fully benefit from packaging and traceability systems, cement manufacturers should consider the following approaches.
• Packaging systems should be treated as an integral part of the manufacturing value chain rather than simply despatching equipment.
• Investments in modern packers, automated loading systems and digital traceability technologies should be encouraged.
• Industry associations may also promote standard traceability practices to reduce counterfeit products and improve transparency in the cement market.
Finally, continuous training of plant personnel in packaging operations and maintenance practices is essential for sustaining operational efficiency.

Conclusion
Cement packaging has evolved from a routine mechanical operation into a strategic component of modern cement manufacturing. Efficient packaging systems ensure that the quality achieved within the plant is preserved during transportation and distribution. Traceability technologies allow manufacturers to track cement movement, investigate complaints and prevent counterfeit products.
As the cement industry moves toward digitalisation and integrated supply chains, packaging and bag traceability will play an increasingly important role in quality assurance, operational efficiency and customer confidence. Ultimately, the cement bag leaving the plant carries not only cement but also the reputation and responsibility of the manufacturer.

References

  1. Hewlett, P.C., & Liska, M. (2019). Lea’s Chemistry of Cement and Concrete. Butterworth-Heinemann.
  2. Schneider, M., Romer, M., Tschudin, M., & Bolio, H. (2011). Sustainable cement production. Cement and Concrete Research, 41(7), 642–650.
  3. International Cement Review. (2023). Advances in cement packaging and logistics systems.
  4. World Business Council for Sustainable Development (2021). Cement Industry Supply Chain Innovation Report.
  5. Gartner, E., & Hirao, H. (2015). Reducing CO2 emissions in cement production. Cement and Concrete Research.
  6. ScienceDirect Industry Studies. (2024). Operational efficiency benchmarks and overall equipment effectiveness in industrial manufacturing systems.
  7. World Cement Association. (2022). Digital Transformation in Cement Manufacturing and Logistics. London.
  8. Towards Packaging Research. (2024). Global cement
    packaging market trends and technology outlook. Industry Market Analysis Report.
  9. Towards Packaging Research. (2024). Global cement
    packaging market trends and technology outlook. Industry Market Analysis Report.

About the author:
Dr SB Hegde is a Professor at Jain College of Engineering, Karnataka, and Visiting Professor at Pennsylvania State University, USA. With 248 publications and 10 patents, he specialises in low-carbon cement, Industry 4.0, and sustainability, consulting with cement companies to support India’s net-zero goals.

Table 1. Key Operational Parameters for Cement Packaging Systems

Parameter Typical Industry Range Recommended Target Operational Significance
Rotary packer capacity 2400–3600 bags/hr 3000–4000 bags/hr Improves despatch efficiency
Bag weight tolerance ±0.5 kg ±0.25 kg Reduces customer complaints
Bag leakage rate 1 per cent to 2 per cent <0.5 per cent Minimises cement loss Packing accuracy 98 per cent to 99 per cent >99.5 per cent Ensure compliance with standards
Truck loading time 30–45 minutes 20–30 minutes Improves logistics efficiency

Table 2. Causes of Cement Quality Degradation During Distribution
Factor Typical Cause Impact on Cement
Moisture exposure Poor storage or rain exposure Lump formation
Long storage duration Slow inventory turnover Loss of early strength
Bag damage Rough handling Cement loss
Improper stacking Excessive loading Bag rupture
Counterfeit bag reuse Refilling of empty bags Brand damage

Table 3. Comparison of Cement Bag Traceability Technologies
Technology Advantages Limitations
Printed batch code Low cost and simple Limited traceability
Barcode Fast scanning Requires equipment
QR code Smartphone verification Requires digital platform
RFID tagging Automated tracking Higher cost
Blockchain systems High transparency Complex implementation

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Economy & Market

SEW-EURODRIVE India Opens Drive Technology Centre in Chennai

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The new facility strengthens SEW-EURODRIVE India’s manufacturing, assembly and service capabilities

SEW-EURODRIVE India has inaugurated a new Drive Technology Centre (DTC) in Chennai, marking a significant expansion of its manufacturing and service infrastructure in South India. The facility is positioned to enhance the company’s responsiveness and long-term support capabilities for customers across southern and eastern regions of the country.

Built across 12.27 acres, the facility includes a 21,350-square-metre assembly and service setup designed to support future industrial growth, evolving application requirements and capacity expansion. The centre reflects the company’s long-term strategy in India, combining global engineering practices with local manufacturing and service capabilities.

The new facility has been developed in line with green building standards and incorporates sustainable features such as natural daylight utilisation, solar power generation and rainwater harvesting systems. The company has also implemented energy-efficient construction and advanced climate control systems that help reduce shopfloor temperatures by up to 3°C, improving production stability, product quality and working conditions.

A key highlight of the centre is the 15,000-square-metre assembly shop, which features digitisation-ready assembly cells based on a single-piece flow manufacturing concept. The facility also houses SEW-EURODRIVE India’s first semi-automated painting booth, aimed at ensuring uniform surface finish and improving production throughput.

With the commissioning of the Chennai Drive Technology Centre, SEW-EURODRIVE India continues to strengthen its manufacturing footprint and reinforces its long-term commitment to supporting industrial growth and automation development in India.

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