Shandong Headpowder Engineering Co., Ltd., a leading provider of advanced pneumatic conveying solutions headquartered in Shandong, China, recently completed a landmark project for a major building materials manufacturer in Guiyang, Guizhou Province. The client, a well-established enterprise specializing in construction-grade additives and mineral powders, required a reliable, high-capacity system to transport bentonite from storage silos to multiple production points. This case study details the successful implementation of a positive pressure pneumatic conveying system, highlighting the engineering expertise of Headpowder and the tangible benefits delivered to the client.
The Guiyang-based building materials enterprise faced significant challenges in handling bentonite, a fine, cohesive, and highly hygroscopic powder. Traditional mechanical conveying methods, such as screw conveyors and bucket elevators, resulted in frequent blockages, high maintenance costs, and dust emission issues. The plant required a closed-loop, dust-free, and automated solution capable of transferring bentonite over a distance of approximately 120 meters with multiple discharge points. The target conveying capacity was 15 tons per hour, with the material being fed into mixers and packaging units. The client also demanded minimal degradation of the bentonite particles and strict control over moisture absorption during transport.
After evaluating several proposals, the client selected Shandong Headpowder Engineering Co., Ltd. based on the company's proven track record in bentonite conveying projects and its proprietary positive pressure pneumatic conveying technology. The project scope included system design, equipment manufacturing, on-site installation, and commissioning.
The core of the solution was a dense-phase positive pressure pneumatic conveying system, specifically engineered to handle the unique flow characteristics of bentonite. Unlike dilute-phase systems that rely on high air velocity, the dense-phase approach uses lower air speeds and higher pressure (typically 0.2–0.6 MPa) to push the material as a plug or slug through the pipeline. This method significantly reduces particle attrition, pipeline wear, and energy consumption, while ensuring stable conveying even for sticky, fine powders.
Headpowder's design team customized the system to include a pressure vessel feeder (also known as a blow tank) with a fluidizing bottom to promote even material discharge. The blow tank was equipped with a pneumatic control panel that precisely regulated the feeding cycle, air pressure, and discharge sequence. The pipeline route was optimized to minimize bends and vertical rises, with wear-resistant ceramic-lined elbows installed at critical points. A dedicated air compressor and dryer unit provided the necessary compressed air, while a bag filter at the receiving end ensured zero dust emission.
This bentonite conveying case showcases several innovative features implemented by Headpowder. First, the system incorporated a patented anti-bridging device inside the blow tank to prevent the formation of arches, a common problem with cohesive powders. Second, the pipeline was equipped with a series of air injection points (air boosters) along the conveying line to maintain plug flow and reduce pressure drop. Third, the control system utilized a PLC with HMI interface, allowing the operator to monitor real-time parameters such as material flow rate, air pressure, and system status. The entire system was designed for 24/7 continuous operation with minimal manual intervention.
The installation phase required close coordination with the client's existing infrastructure. Headpowder's engineering team conducted a thorough site survey and provided detailed layout drawings. The system was installed within a two-week window without disrupting ongoing production, thanks to modular skid-mounted design of the main components. After commissioning, the system achieved the target conveying capacity of 15 tons per hour with a conveying velocity of less than 8 m/s, ensuring low particle breakage and consistent product quality.
The positive pressure pneumatic conveying system delivered by Headpowder has been operating reliably for over 18 months since handover. The client reported a 40% reduction in maintenance costs compared to their previous mechanical conveying setup, along with a 95% decrease in dust emissions. The closed-loop design also eliminated moisture ingress, maintaining the bentonite's moisture content below 2% throughout the conveying process. The system's energy efficiency was notable, consuming only 8 kWh per ton of material conveyed, which is significantly lower than industry averages for similar applications.
Furthermore, the flexibility of the positive pressure system allowed the client to easily add future discharge points without major modifications. The ability to convey bentonite over long distances and around obstacles made the plant layout more compact and efficient. The client's production manager praised the system's low noise level and the intuitive control interface, which reduced operator training time. This case demonstrates why Headpowder's positive pressure pneumatic conveying technology is the preferred choice for building materials enterprises handling challenging powders.
Shandong Headpowder Engineering Co., Ltd. has accumulated extensive experience in building materials powder conveying engineering, covering a wide range of materials including cement, fly ash, limestone, gypsum, and bentonite. The company's engineering team possesses deep knowledge of powder flow behavior, pneumatic system design, and automation control. Each project is tailored to the specific physical properties of the material and the site constraints, ensuring optimal performance and long-term reliability.
In the case of bentonite, Headpowder has successfully completed over 50 projects in China and abroad, with capacities ranging from 5 to 50 tons per hour. The company's standard modular system components, such as blow tanks, diverter valves, and rotary airlocks, are manufactured in-house under strict quality control. Headpowder also provides comprehensive after-sales support, including remote monitoring, spare parts supply, and technical training. For any inquiries related to building materials powder conveying engineering, please contact Manager Zhang at Shandong Headpowder Engineering Co., Ltd. via WeChat: 15662777102.
The Guiyang bentonite positive pressure pneumatic conveying project stands as a testament to the engineering excellence of Shandong Headpowder Engineering Co., Ltd. By combining advanced dense-phase technology with customized solutions, Headpowder successfully addressed the client's challenges of material sticking, dust pollution, and high maintenance costs. The system not only met all performance specifications but also exceeded expectations in terms of reliability, energy efficiency, and ease of operation. This case provides a valuable reference for other building materials enterprises seeking to upgrade their powder handling processes.
For more information about bentonite conveying systems, positive pressure pneumatic conveying systems, or building materials powder conveying engineering, please reach out to the professional team at Headpowder. The contact person is Manager Zhang, available via WeChat: 15662777102. Headpowder looks forward to partnering with you on your next powder handling project, delivering solutions that combine innovation, quality, and cost-effectiveness.
Shandong Headpowder Engineering Co., Ltd.
156-6277-7102（Zhang manager） 
0531-83386006 
Jinan City, Shandong, China Province 
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