Project Case of Dilute Phase Pneumatic Conveying of Dust Removal Ash from a Metallurgical Enterprise in Changzhi, Shanxi

Shandong Headpowder Engineering Co., Ltd. (brand name: headpowder) successfully delivered a comprehensive dilute phase pneumatic conveying system for dust collection ash at a leading metallurgical plant located in Changzhi City, Shanxi Province, China. This project addresses the critical need for efficient, reliable, and environmentally sound handling of fine dust generated during steelmaking and metal smelting processes. The system is specifically designed for metallurgical dust collection conveying, ensuring that all captured particulate matter is transported safely from baghouse hoppers to storage silos or disposal points without contamination or fugitive emissions.

The client, a major producer of ferrous alloys, faced significant challenges with their existing ash handling methodology. Manual labor and open-top trucks not only created severe dust pollution but also posed health risks to workers and resulted in frequent material losses. The plant required a closed-loop, fully automated solution that could handle the high temperature, abrasive nature, and fine particle size of the dilute phase pneumatic conveying system for ash. Headpowder's engineering team conducted a thorough site survey, analyzing the ash composition, particle size distribution, temperature range (up to 150°C), and existing layout constraints. Based on these findings, a custom dust collection ash dilute phase conveying case was developed, utilizing a positive pressure dilute phase transport methodology.

System Design and Key Components

The core of the solution is a dilute phase pneumatic conveying system that operates at high air-to-material ratios, keeping the ash particles suspended in the air stream at velocities between 15 and 25 m/s. This design minimizes wear on pipeline bends and reduces overall energy consumption compared to dense phase alternatives. The system includes a rotary airlock feeder, a roots-type blower with silencer, a series of abrasion-resistant steel pipes with ceramic-lined bends, and a reverse-pulse baghouse filter at the receiving end. All control logic is managed by a Siemens PLC with HMI interface, allowing operators to monitor conveying pressure, air flow rate, and material level in real time. The entire process is sealed, preventing any dust leakage and meeting the strictest environmental standards in Shanxi Province.

For the metallurgical dust collection conveying application, special attention was given to the material's tendency to agglomerate when exposed to moisture. The headpowder team incorporated a moisture control system that pre-dries the ash using waste heat from the plant's flue gas, ensuring consistent flowability. Additionally, the pipeline route was designed with multiple inspection ports and cleaning access points, facilitating routine maintenance without interrupting production. The system's conveying capacity is 12 tons per hour over a distance of 150 meters, with a vertical lift of 25 meters, all achieved under a conveying pressure of only 0.6 bar.

Implementation and Performance Results

Installation was completed within six weeks, including site preparation, pipe welding, electrical wiring, and commissioning. The headpowder project team provided on-site training for the client's operators and maintenance staff, covering startup procedures, emergency shutdown protocols, and daily inspection routines. Since going live, the dust collection ash dilute phase conveying case has demonstrated remarkable reliability. The system operates 24/7 with an availability rate exceeding 99.5%, and the ash is now delivered to a sealed storage silo with zero fugitive emissions. The client reported a 40% reduction in operational labor costs and a significant improvement in workplace safety, as manual handling of hot and abrasive ash has been completely eliminated.

Moreover, the dilute phase pneumatic conveying system has proven to be highly adaptable. When the plant later upgraded its furnace technology, the system easily accommodated changes in ash composition (higher silica content) without requiring major modifications. The headpowder engineering team continues to provide remote monitoring support and annual maintenance services, ensuring long-term performance. This successful project has become a reference case for the metallurgical industry in the region, demonstrating how metallurgical dust collection conveying can be transformed from a liability into an efficient, clean operation.

Why Choose Headpowder's Dilute Phase Conveying Technology

Shandong Headpowder Engineering Co., Ltd. (headpowder) has over 15 years of experience in designing and manufacturing pneumatic conveying systems for bulk solids. The company's dilute phase pneumatic conveying system is widely recognized for its low energy consumption, minimal maintenance requirements, and high reliability. For the Changzhi project, the company leveraged its proprietary wear-resistant pipe lining technology and advanced control algorithms to optimize the air-to-solid ratio automatically. The result is a system that not only meets but exceeds the client's performance expectations.

If you are facing similar challenges in handling dust collection ash from metallurgical processes, headpowder can provide a tailored solution. Contact our China Shandong office: Sales Manager Mr. Zhang (WeChat: 15662777102) for a free consultation or to arrange a site visit to this successful reference project. Our team is ready to help you design a dust collection ash dilute phase conveying case that fits your specific plant layout, material characteristics, and production targets. With headpowder, you gain a reliable partner committed to clean, efficient, and cost-effective material handling.

Technical Specifications Summary

System Type: Positive pressure dilute phase pneumatic conveying
Conveying Distance: 150 meters horizontal + 25 meters vertical
Capacity: 12 tons per hour
Material: Metallurgical dust collection ash (particle size 0.5–100 microns, temperature up to 150°C)
Conveying Velocity: 18–22 m/s
Air Consumption: 25 m³/min at 0.6 bar
Control System: Siemens PLC with HMI, remote monitoring capability
Wear Protection: Ceramic-lined bends, abrasion-resistant straight pipes
Environmental Compliance: Zero fugitive emissions, meets China GB 16297-1996 standards

For more information about this dilute phase pneumatic conveying system or to discuss your specific application, please reach out to headpowder's Shandong headquarters. Sales Manager Mr. Zhang can be contacted via WeChat: 15662777102. We look forward to helping you achieve cleaner, safer, and more efficient metallurgical dust collection conveying operations.