Concrete

Controlling Dust at Critical Connections

Published

2 months ago

October 10, 2025

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Jerad Heitzler, Training Manager, Martin Engineering, writes about controlling dust at conveyor transfer points to protect worker health and to extends equipment life and boost operational efficiency.

Transfer points are critical connections between key stages of cement manufacturing, but they are notorious as a source of fugitive dust. After all, whenever materials like crushed limestone, shale or clinker drop onto a moving conveyor, dust emissions are inevitable, aren’t they? Not necessarily.
When loose materials hit a moving conveyor belt, the impact causes some of the cargo to disperse, particulates become airborne, and the subsequent air turbulence forces the dust toward the nearest opening. If the environment isn’t sealed, the dust-filled air creates a serious workplace health and safety hazard, a problem that’s exacerbated if dust is allowed to build up.
Dust emissions don’t just create a harmful environment for those working in the area. Abrasive particulates make their way into exposed machine parts and rolling components, causing them to wear quicker, seize and require replacement sooner. Particulates also clog air intakes of nearby equipment, further raising the need for maintenance and downtime. Then as it settles, dust builds up to cover walkways and stairs, engulfing control units, obscuring signage and, in some cases making access for maintenance impossible without a full shutdown and clean-up.
Often, the biggest issue is the team’s lack of understanding of the underlying sources of dust at transfer points. In fact, there are just three factors that cause dust in any minerals processing plant:
a. Material degradation from crushing and milling, as well as transfer and movement, which creates an abundance of fine particles that become airborne.
b. Air flow through the plant is a key factor in carrying airborne particulates and this can be controlled with the right design, considering material speed, volume and fall.
c. Transfer point design is one of the main causes of dust emissions and spillage on conveyor systems, often exacerbated due to desired increases in productivity.

Best practices for transfer point dust control

Avoid belt sag with impact cradle support. For each transfer point, support the belt the entire length of the chute wall so it doesn’t sag away from skirting. The pressure from air turbulence is enough to push dust and fines out of these gaps, causing excessive dust and spillage.
Use wearliners to increase system life. Modern chute designs raise the height of the chute, providing more room for dust to settle in the stilling zone and allowing space for an external wearliner. Without it, the rubber skirting takes the force of falling materials which lowers the equipment’s life.
Seal the environment with belt skirting. Single skirting should be cut to the belt’s trough angle for a tighter seal and mounted externally for easy and safe adjustment. Self-adjusting skirting has spring-driven latches that offer slight downward pressure for reduced maintenance. Dual skirting offers a single skirt with a rubber flap that provides a second layer of sealing and protection from spillage and emissions.
Use dust collection only when necessary – ‘Passive dust control’ uses engineered solutions such as controlled loading, wearliners, skirting, curtains and modular enclosures first. When there are length or space restrictions for chutes, which prevent an extended settling zone, dust bags and mechanical air cleaners are still effective, but they can require more maintenance, so sealing at source is better.
Slow the exiting air velocity. Some flow of air is still going to be exiting the system, but the key is slowing it to under 200 fpm (1 m/s), slow enough to allow for settlement happen. Adding a tail panel and curtains is essential to this but simply adding them at the ends does not accomplish the proper stilling environment required. Understanding the air flow and then strategic placement is the key to reducing exiting air velocity.

Conclusion
Improving workplace air quality in a cement plant seems like a challenge but eliminating dust delivers numerous benefits, notably in health and safety, housekeeping, efficiency, productivity and cost reduction. Of course, conveyor transfer points are not the only source of dust. However, as one of the most prevalent generators of particulate emissions in any bulk handling operation, addressing these is an excellent place to start.
By following best practices using modern and well-designed retrofitted components, and expert advice from experienced technicians, operators can tackle dust in a methodical way. Once the major dust sources are addressed, it becomes easier to identify emissions from other parts of the operation with the ultimate goal of a clean, efficient and
safe operation.

About the author:
As programme manager and lead instructor for Martin Engineering’s FOUNDATIONS™ Training Workshops, Jerad Heitzler is a leader in helping the industry learn how to make the handling of bulk materials cleaner, safer and more productive.

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AFCM Unveils 2035 Regional Decarbonisation Roadmap for Cement Sector

AFCM launches world’s first regional decarbonisation plan for cement at Brunei meet.

Published

4 days ago

December 5, 2025

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The ASEAN Federation of Cement Manufacturers (AFCM) has formally launched the 2035 AFCM Decarbonisation Roadmap, becoming the first regional bloc in the world to introduce a unified decarbonisation strategy for the cement sector. The announcement was made at the 46th AFCM Council Meeting in Brunei Darussalam, chaired by Dr Chana Poomee, and attended by leaders and representatives of cement associations from all eight AFCM member countries. The launch comes as global attention intensifies ahead of COP30 in Brazil, where climate action is expected to be a central priority.

Cement production remains integral to infrastructure and economic development across the ASEAN region, yet it is also a major contributor to CO? emissions. The 2035 AFCM Decarbonisation Roadmap signals a collective regional commitment to accelerating emissions reduction in alignment with national climate policies and global sustainability goals, reinforcing AFCM’s leadership in the transition to low carbon cement production.

Dr Chana Poomee, AFCM President and Chairman of the Thai Cement Manufacturers Association (TCMA), described the roadmap as a landmark achievement for the region’s cement industry. He noted that the shared framework would support systematic CO? reduction, strengthen regional competitiveness and enhance ASEAN’s contribution to global climate objectives.

Developed with strong support from the Global Cement and Concrete Association (GCCA), the 2035 Roadmap sets out a comprehensive transition pathway anchored around four strategic pillars:

• Expansion of low carbon cement enabled by performance-based standards;

• Transition to clean and renewable energy across production processes, alongside improved thermal and electrical efficiency;

• Deployment of advanced decarbonisation technologies, including Carbon Capture, Utilisation and Storage (CCUS); and

• Development of new supplementary cementitious materials to support next-generation low carbon cement products.

Dr Chana urged all AFCM members to treat the roadmap as a coordinated regional strategy for sustainable growth. At the ASEAN level, the measures outlined have the potential to reduce up to 38 million tonnes of CO2 by 2035. While the roadmap sets a collective vision, it acknowledges the diversity of national conditions, recognising that each member country will set its own targets based on regulatory frameworks, industrial maturity and technological capacity. One key early-action priority is the reduction and phasedown of Ordinary Portland Cement (OPC), providing an immediate opportunity for substantial emissions cuts.

Cement associations from Brunei Darussalam, Cambodia, Indonesia, Malaysia, the Philippines, Singapore, Thailand and Vietnam expressed strong support for the roadmap and reaffirmed their commitment to advancing decarbonisation within their national contexts. Members emphasised the need for supportive policies, expanded use of alternative fuels, improved energy efficiency, accelerated adoption of advanced technologies and greater promotion of low carbon cement and concrete solutions. They also recognised that specific decarbonisation pathways will vary based on each country’s energy mix, material availability, policy environment and market readiness.

“The 2035 AFCM Decarbonisation Roadmap presents a significant opportunity to enhance regional competitiveness, drive sustainable development and unlock substantial economic benefits. Government support, including policy adaptation, will be essential for effective implementation. Through collaboration, innovation and collective action, AFCM can accelerate the adoption of low carbon technologies, attract green investment, create new economic opportunities and build a resilient, future-ready cement industry that contributes meaningfully to global decarbonisation,” Dr Chana concluded.

The issuer is solely responsible for the content of this announcement.

Concrete

Cement Makers Positive on H2 Demand Outlook

Major producers expect stronger sales in the second half of FY26.

Published

6 days ago

December 3, 2025

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The leading cement producers have posted high single-digit volume growth and better sales realisation in the July–September quarter, setting a positive tone for the second half of FY26. Companies are upbeat on demand prospects, supported by a strong housing sector and continued government spending on major infrastructure projects.

UltraTech, Ambuja Cement, Shree Cement, Dalmia Bharat and Nuvoco Vistas recorded revenue growth of up to 18 per cent in the September quarter. The rise was driven by firm realisations, softer input costs and an increased share of premium products.

With coal prices easing and diesel rates remaining stable year-on-year, companies expect margins to improve further in the coming months despite a rise in petcoke costs. In recent earnings calls, cement makers highlighted that the individual home builders segment across rural and urban markets is likely to drive demand, aided by favourable monsoon conditions, recent tax benefits and GST reforms.

Concrete

Fornnax Unveils the World’s Largest NPD and Demo Centre to Accelerate Global Recycling Innovation

Published

6 days ago

December 3, 2025

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A 12-acre innovation campus enables Fornnax to design, test and validate high-performance recycling solutions at global standards in record time.

Fornnax has launched one of the world’s largest New Product Development (NPD) centres and demo plants, spanning more than 12 acres, marking a major step toward its vision of becoming a global recycling technology leader by 2030. Designed to accelerate real-world innovation, the facility will enable faster product design cycles, large-scale performance validation, and more reliable equipment for high-demand recycling applications.

At the core of the new campus is a live demo plant engineered to support application-specific testing. Fornnax will use this facility to upgrade its entire line of shredders and granulators—enhancing capacity, improving energy efficiency, and reducing downtime. With controlled test environments, machines can be validated for 3,000 to 15,000 hours of operation, ensuring real-world durability and high availability of 18–20 hours per day. This approach gives customers proven performance data before deployment.

“Innovation in product development is the key to becoming a global leader,” said Jignesh Kundariya, Director and CEO of Fornnax. “With this facility, we can design, test and validate new technologies in 6–8 months, compared to 4–5 years in a customer’s plant. Every machine will undergo rigorous Engineering Build (EB) and Manufacturing Build (MB) testing in line with international standards.”

Engineering Excellence Powered by Gate Review Methodology

Fornnax’s NPD framework follows a structured Gate Review Process, ensuring precision and discipline at every step. Projects begin with market research and ideation led by Sales and Marketing, followed by strategic review from the Leadership Team. Detailed engineering is then developed by the Design Team and evaluated by Manufacturing, Service and Safety before approval. A functional prototype is built and tested for 6–8 months, after which the design is optimised for mass production and commercial rollout.

Open-Door Customer Demonstration and Material Testing

The facility features an open-door demonstration model, allowing customers to bring their actual materials and test multiple machines under varied operating conditions. Clients can evaluate performance parameters, compare configurations and make informed purchasing decisions without operational risk.

The centre will also advance research into emerging sectors including E-waste, cables, lithium-ion batteries and niche heterogeneous waste streams. Highly qualified engineering and R&D teams will conduct feasibility studies and performance analysis to develop customised solutions for unfamiliar or challenging materials. This capability reinforces Fornnax’s reputation as a solution-oriented technology provider capable of solving real recycling problems.

Developing Global Recycling Talent

Beyond technology, the facility also houses a comprehensive OEM training centre. It will prepare operators and maintenance technicians for real-world plant conditions. Trainees will gain hands-on experience in assembly, disassembly and grinding operations before deployment at customer sites. Post-training, they will serve as skilled support professionals for Fornnax installations. The company will also deliver corporate training programs for international and domestic clients to enable optimal operation, swift troubleshooting and high-availability performance.

A Roadmap to Capture Global Demand

Fornnax plans to scale its offerings in response to high-growth verticals including Tyre recycling, Municipal Solid Waste (MSW), E-waste, Cable and Aluminium recycling. The company is also preparing solutions for new opportunities such as Auto Shredder Residue (ASR) and Lithium-Ion Battery recovery. With research, training, validation and customer engagement housed under one roof, Fornnax is laying the foundation for the next generation of recycling technologies.

“Our goal is to empower customers with clarity and confidence before they invest,” added Kundariya. “This facility allows them to test their own materials, compare equipment and see real performance. It’s not just about selling machines—it’s about building trust through transparency and delivering solutions that work.”

With this milestone, Fornnax reinforces its long-term commitment to enabling industries worldwide with proven, future-ready recycling solutions rooted in innovation, engineering discipline and customer collaboration.