The operation principle of main unit of Trapezium mill is that main unit runs with the central shaft that is driven by a gear box. The top of the shaft is connected with a quincunx stand on which a grinding roller is installed to form a swing support. The grinding roller not only rotates around the central axle and grinding ring but also rotates around its own axle due to the friction. .
Feldspar, calcite, limestone, talc, barite, rare earth, marble, bauxite, phosphate ore, iron oxide red, dolomite, granite, bitumite, anthracite, lignite, kaolin, bentonite, gypsum.
There is a pallet knife system at bottem of quincunx stand. The pallet knife system is under the grinding roller. With co-rotation of pallet knife and grinding roller, pallet knife will lift the materials into the space between roller and ring to to form a material layer. The materials will be grinded due to the centrifugal force of roller and thus finally achieve the aim of making powder.
The system consists of grinding mill, separator, air blower, jaw crusher, vibrating feeder, hopper, dust collector, pipe, powder collector, electric cabinet, motors, etc.
Big lump materials are crushed to required size by jaw crusher, then elevated to buffering hopper through elevator, after that fed into the mill to be ground. Materials are to be ground between ring and rollers, and move up with the air flow, those particles which cannot pass the separator will fall down and be ground again, while others will be collected as finished product. Air flow passing through separator will go to the air blower for recycling, it's a closed system.