This project was successfully implemented for a well-known building materials manufacturer located in Hefei, Anhui Province, China. The client required a reliable and efficient system to transport limestone powder from storage silos to multiple production points. After evaluating various conveying methods, the company selected a positive pressure pneumatic conveying solution to ensure dust-free operation, low maintenance, and high material integrity. The entire system was designed, manufactured, and commissioned by Shandong Headpowder Engineering Co., Ltd., a leading provider of bulk material handling solutions in China.
The heart of this project is the limestone powder positive pressure pneumatic conveying case that demonstrates the company's expertise in handling fine, abrasive, and hygroscopic powders. The system uses compressed air to push limestone powder through a sealed pipeline at controlled velocities, achieving stable conveying distances of over 200 meters without material degradation. Key components include a rotary airlock feeder, a pressure vessel, and a PLC-based control system that automatically adjusts airflow and pressure based on real-time material flow. This solution eliminates dust emissions, reduces manual labor, and ensures consistent powder supply to downstream processes such as blending, packing, or kiln feeding.
As a building materials powder conveying system, this installation is tailored to handle not only limestone powder but also other common raw materials like cement, fly ash, and gypsum. The system features a modular design that allows easy expansion and integration with existing plant equipment. The pipeline material is selected from wear-resistant alloys to withstand the abrasive nature of limestone powder, and the entire system operates at a pressure range of 0.2 to 0.6 MPa. Compared to mechanical conveyors, this pneumatic approach reduces moving parts, lowers energy consumption, and minimizes cross-contamination between different materials. The successful operation in Hefei has become a reference for other building material plants in the region.
This project is a typical lime powder pneumatic conveying engineering case that covers the entire lifecycle from site survey, system design, fabrication, installation, to commissioning and training. The engineering team at Shandong Headpowder conducted a thorough analysis of the client's material properties, including particle size distribution, moisture content, and bulk density. Based on the data, they customized the conveying line layout, selecting optimal pipe diameters, bend angles, and material discharge points. The system also includes a high-efficiency dust collector at the receiving end to recover any fines, ensuring zero material loss and compliance with local environmental regulations. The project was completed within 6 weeks and has been running continuously for over 18 months with minimal downtime.
Shandong Headpowder Engineering Co., Ltd. (headquartered in Shandong, China) is a professional engineering company specializing in the design, manufacture, and installation of pneumatic conveying systems for powders and granules. With over 15 years of industry experience, the company has delivered hundreds of projects across the building materials, chemical, food, and metallurgy sectors. The company's core products include dense phase pneumatic conveying, dilute phase conveying, and positive pressure conveying systems, all engineered to meet the highest standards of reliability and safety. The team of experienced engineers provides turnkey solutions from concept to after-sales support.
For more details about this limestone powder positive pressure pneumatic conveying case or to discuss your own project requirements, please contact Manager Zhang at Shandong Headpowder Engineering Co., Ltd. Manager Zhang can be reached via WeChat (ID: 15662777102) for prompt consultation. The company warmly welcomes inquiries from building material manufacturers, lime processing plants, and any industry needing efficient powder handling solutions.
The Hefei project achieved several key benefits: first, the enclosed conveying system completely eliminated dust leakage, improving the plant's air quality and worker safety. Second, the automated control reduced labor costs by 30% as the system requires only periodic monitoring. Third, the positive pressure design allowed the limestone powder to be conveyed vertically up to 15 meters, overcoming the plant's layout constraints. Fourth, the wear-resistant pipe sections extended the system's service life to over 5 years before replacement. The client reported a 20% increase in overall production efficiency due to the consistent material supply. This case stands as a testament to the effectiveness of Shandong Headpowder's engineering solutions.
Compared to negative pressure (vacuum) conveying, positive pressure systems are better suited for long-distance transport and for materials that are prone to clogging. Limestone powder, with its fine particle size and tendency to become cohesive under moisture, performs reliably in a positive pressure environment where the air flow pushes the material rather than pulling it. The system also allows multiple discharge points along the same line, enabling flexible distribution to different silos or production lines. Maintenance is straightforward, focusing on the rotary valve and pressure relief valves. For any building materials enterprise handling lime or limestone powder, this technology provides a cost-effective, clean, and scalable solution.
Shandong Headpowder Engineering Co., Ltd.
156-6277-7102（Zhang manager） 
0531-83386006 
Jinan City, Shandong, China Province 
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