Roll forming machine, also known as extrusion mill, roller press mill and counter roller mill, is a new type of energy-saving cement grinding equipment developed internationally in the mid-1980s. It can replace the pre grinding system of ball mills with high energy consumption and low efficiency, and reduce the steel consumption and working noise. 

It is suitable for the construction of new plants and the technical transformation of old plants, so as to increase the system output by 30-50%. Among the extruded materials, the fine materials of 0.08mm account for 20-35%, and the materials of less than 2mm account for 65-85%. The internal structure of the particles is filled with micro cracks due to extrusion, which greatly improves the grindability. The roller surface adopts thermal surfacing, and the wear-resistant layer is easy to maintain.

Working principle:

The roll forming machine is designed according to the principle of material bed grinding. Its main features are: high pressure, full speed, full material and material bed grinding. The roller press is composed of two mutually rotating extrusion rollers, one is a fixed roller and the other is a movable roller.

The material is fed from above the two rollers, and is continuously brought between the rollers by the extrusion rollers. After being subjected to a high pressure of 100-150mpa, it becomes a dense cake and is discharged from the machine. The discharged cake contains a certain proportion of fine-grained finished products. A large number of cracks are generated in the interior of the non finished particles, which improves the grindability of the materials, and greatly reduces the grinding energy consumption in the further grinding process.

The material passing through the grinding roller is mainly divided into three stages: full material concentration, lamination crushing and agglomeration discharging.