The "Pengfei" roller press is a new type of energy-saving cement grinding equipment that adopts material layer grinding technology. It consists of a roller press, dispersion, grading, drying, and powder selection system, which can be combined with a ball mill to form various process flows, such as pre grinding, mixed grinding, semi final grinding, and final grinding systems. Due to changes in the grinding principle, the roller press and its grinding system technology have reduced energy consumption by 50-100% and increased production by 100-300%; Suitable for the renovation of grinding systems in new or old factories, the material cake after extrusion contains 20-35% of 0.08mm fine materials and 65-85% of materials smaller than 20mm. The internal structure of small particles is filled with many small cracks due to extrusion, greatly improving their grindability.

　　Main features

　　Roller surface technology (welding materials, equipment, and welding processes): The roller surface adopts hot welding, making the maintenance of the wear-resistant layer more convenient. Effectively reducing the generation and propagation of microcracks during the welding process, the hardened layer has high hardness (>HRC58) and toughness, and the service life of the roller surface is over 8000 hours, with simple daily maintenance.

　　Adopting aviation hydraulic technology, the hydraulic system of the roller press is extremely reliable.

　　The hydraulic system of the roller press can be coordinated with a complete automatic control system to achieve load control of the main drive motor of the roller press; Control and automatic correction of left and right gap deviation between two rollers; Fault self diagnosis technology.

　　The supporting powder selection machine integrates the breaking, grading, and drying of the aggregate cake, and has the characteristics of low operating cost and high operating rate.

　　The supporting automatic control system adopts fuzzy control principle and is equipped with components from world-renowned suppliers.

　　Design and Configuration

　　Wear resistant lining

　　The pressure roller of PFG has a layer of wear-resistant lining that has been welded, which can be used for welding solid shafts or hot press fit bushings.

　　The worn surface can be restored by welding. If necessary, repair of damaged points or welding of the entire surface can be carried out without moving the roller.

　　Feeding control system

　　In order to facilitate the formation of extruded material cakes, the HRP roller press has an electric feeding control door, which can make the feeding start smooth and help adjust the output or energy consumption of the roller press. Setting up a feeding control door is beneficial when dealing with multiple types of materials, but it is necessary for forming a cake.

　　Configuration Options

　　The roller press can be used to form a grinding system in the following ways:

　　As a pre grinder, the roller press grinds the new feed, and the ground material then enters the ball mill grinding circuit.

　　As a semi final grinding equipment, the PFG roller press operates in a closed circuit together with the disperser and dynamic powder selector.

　　Fine materials are finally ground in a single chamber ball mill. In this configuration, the PFG roller press can be arranged more compactly and efficiently by using a two-stage powder selector to work together with the ball mill.

　　For certain types of feed and certain final products, the PFG roller press can operate as a final grinding system without the need for a ball mill. The PFG roller press operates together with the two-stage powder selection machine in a closed circuit, which can result in lower operating and investment costs.