Zheng Gangfeng

Banana flip-flow screen benefits coal preparation

Screening plays an important part in coal processing and is widely used in preparation plants but traditional classifying screens encounter many problems. Here we look at the development of a high-viscosity, high-surface water, fine-grained coal screening solution with a linear vibration. banana flip-flow screen which brought many benefits.

Design & testing of an automated dredging device

The outlets of coal storage and feed containers in coal preparation and power plants are prone to blockages due to cohesion of the extruded materials. Such blockages threaten the plants normal, safe operation. To address this issue, Zheng Gangfeng and his colleagues have developed an automated multifunctional device designed to provide timely and efficient separation of outlet blockages.

Slime heavy medium cyclone advantages in coal production

Slime heavy medium cyclone is used for coarse slime separation in many new coal preparation plants. This article demonstrates how it reduces ash content in clean coal, coarse slime entering the float processing, production costs and increases economic efficiency.

Optimizing coal flotation process improves capacity

Raw coal changes and quality requirements in China have meant that coal preparation plants are looking to improve their washing processes and flotation equipment. By doing this, one coal mine increased efficiencies of its clean coal filter press, recovery of flotation technique and coal slime content, improving its processing capacity.

Mining: Bowl dehydrator design for coal slurry processing

To improve the dewatering of coal slurry, Zheng Gangfeng and his colleagues at Anhui University of Science and Technology in China have developed and built a new design of bowl dehydrator with a spiral screen. Here, they discuss its operating principles and salient features, and present test results that demonstrate its potential for industrial-scale application.