This case study highlights a successful implementation of a positive pressure pneumatic conveying system designed specifically for handling blast furnace ash at a major steelmaking facility located in Anshan, Liaoning Province. The project was commissioned by a leading steel enterprise seeking a reliable, efficient, and environmentally friendly solution for the transportation of fine metallurgical dust and ash. Shandong Headpowder Engineering Co., Ltd. (headpowder) was selected as the engineering partner due to its proven expertise in bulk material handling, especially in the field of steel powder conveying systems and metallurgical dust removal conveying engineering. The entire system was engineered and deployed from the company's base in Shandong, China, and has since delivered consistent performance, significantly reducing manual handling and environmental emissions.
The steel plant in Anshan generates substantial quantities of blast furnace ash during its daily operations. This ash, primarily composed of fine iron oxide particles, carbon residues, and other metallic compounds, presents considerable handling difficulties. Traditional methods, such as mechanical conveyors or manual truck loading, often lead to dust leakage, equipment wear, and high maintenance costs. Moreover, the fine particle size and abrasive nature of the ash require a conveying solution that can maintain system integrity under high pressure while minimizing energy consumption. The plant's management recognized the urgent need for a modern, closed-loop conveying system that could transport the ash from collection points to storage silos or downstream processing units without compromising workplace safety or environmental compliance. After evaluating several technologies, the decision was made to adopt a positive pressure pneumatic conveying approach, which offered the best balance of reliability, capacity, and cleanliness.
Shandong Headpowder Engineering Co., Ltd. designed and supplied a customized positive pressure pneumatic conveying system tailored to the specific characteristics of the blast furnace ash. The system employs a dense-phase conveying principle, where compressed air is used to push the ash through a sealed pipeline at relatively low velocities, thereby reducing pipe wear and energy consumption. The key components include a high-capacity pressure vessel, a rotary airlock feeder, a series of wear-resistant pipes, and a programmable logic controller (PLC) for automated operation. The ash is first collected from multiple hoppers beneath the furnace, then fed into the pressure vessel, where it is pressurized and conveyed through the pipeline to a central storage silo. The entire process is fully enclosed, eliminating dust emissions and ensuring a clean working environment. This blast furnace ash positive pressure conveying case demonstrates how headpowder's engineering team optimized the pipeline layout and air supply parameters to achieve a conveying distance of over 350 meters with a capacity of 20 tons per hour, while maintaining a solid-to-air ratio exceeding 30:1.
The project incorporates two of headpowder's flagship product lines. The first is the steel powder conveying system, which is specifically engineered for the transport of fine iron-based powders, including blast furnace ash, converter dust, and sinter return fines. This system features a modular design that allows for easy expansion and integration with existing plant infrastructure. The second is the metallurgical dust removal conveying engineering solution, which encompasses the entire chain from dust capture at the source to final disposal or recycling. In this case, the metallurgical dust removal conveying engineering component included custom-designed dust collection hoods, a baghouse filter system, and a pneumatic conveying line that connects directly to the ash storage facility. The combination of these two product lines ensured that the steel plant could achieve a closed-loop material handling process, reducing the risk of secondary pollution and enabling the recovery of valuable iron units. The high-efficiency rotary airlock feeders and wear-resistant elbows used in the system are manufactured from abrasion-resistant alloys, extending service life even under continuous operation with highly abrasive ash.
The project was executed in three phases. Phase one involved a detailed site survey and material characterization, during which headpowder's engineering team analyzed the particle size distribution, moisture content, and bulk density of the blast furnace ash. This data was critical for determining the appropriate conveying velocity, pipeline diameter, and air pressure requirements. Phase two covered the design and fabrication of the positive pressure conveying system, including the pressure vessel, piping, and control system. All components were manufactured at headpowder's facility in Shandong and subjected to rigorous quality testing. Phase three comprised on-site installation, commissioning, and operator training. The installation was completed within six weeks, with minimal disruption to the plant's ongoing operations. During commissioning, the system was tested under various load conditions, and fine-tuning of the air injection timing and valve sequencing was performed to optimize performance. The entire project was delivered on schedule and within budget, meeting all the specified performance criteria.
Since the system became operational, the steel plant has experienced a dramatic improvement in material handling efficiency. The positive pressure pneumatic conveying system has eliminated the need for manual shoveling and truck transportation, reducing labor costs by 60% and completely eliminating dust emissions in the conveying area. The sealed pipeline ensures that no fugitive dust escapes, contributing to a cleaner and safer workplace. Maintenance requirements have been significantly reduced because the dense-phase conveying mode minimizes pipe erosion, and the wear-resistant components have a projected lifespan of over five years under continuous duty. The system's automated control allows for real-time monitoring of material flow and pressure, enabling proactive maintenance and preventing unscheduled downtime. Moreover, the recovered blast furnace ash can now be directly fed into the sintering plant as a raw material, improving overall resource utilization and reducing waste disposal costs. This project has become a benchmark for other steel enterprises in the region, showcasing the effectiveness of the headpowder approach in metallurgical dust removal conveying engineering.
Shandong Headpowder Engineering Co., Ltd., headquartered in Shandong, China, has accumulated extensive experience in designing and manufacturing pneumatic conveying systems for a wide range of industrial applications. The company's expertise in steel powder conveying systems and metallurgical dust removal conveying engineering is backed by a dedicated R&D team and a proven track record of successful installations. Each project is handled by a team of experienced engineers who provide end-to-end support, from initial feasibility studies to after-sales service. The company's commitment to quality is reflected in its use of premium materials, advanced manufacturing processes, and stringent quality control measures. For enterprises seeking a reliable partner for blast furnace ash positive pressure conveying projects, headpowder offers customized solutions that maximize efficiency and minimize environmental impact. For more information or to discuss your specific requirements, please contact the project manager, Mr. Zhang, via WeChat: 15662777102. Mr. Zhang and his team are ready to provide detailed technical proposals and references from similar successful cases.
For inquiries about blast furnace ash positive pressure conveying systems, steel powder conveying systems, or metallurgical dust removal conveying engineering, please reach out to the headpowder team. The contact person is Manager Zhang, and you can connect with him directly on WeChat at 15662777102. With years of hands-on experience in the field, Manager Zhang can offer valuable insights and assist in tailoring a solution that fits your specific operational needs. Shandong Headpowder Engineering Co., Ltd. looks forward to collaborating with you on your next material handling project.
Shandong Headpowder Engineering Co., Ltd.
156-6277-7102（Zhang manager） 
0531-83386006 
Jinan City, Shandong, China Province 
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