At present fertilizers are mainly granular. For granular fertilizers, the pellets should be round, and round pellets are suitable for packaging, transportation and storage. The wear between circular particles is less than that between irregular particles. The round surface is easy to achieve a smooth finish, so it is easy to increase particle strength. In order to facilitate application, the diameter of circular particles is generally controlled in 2mm-4mm.

The roller extrusion granulator is a kind of forming machine which can make the material into a specific shape. For roller granulator suitable for ammonium bicarbonate, ammonium chloride, ammonium phosphate and other granulation effect is particularly good, the pellet rate can reach 85%, no drying, in less return effect. The roller extrusion granulator has no drying process, granulation at room temperature, one forming, less investment, quick effect and good economic benefit.

The roller granulator raw material adaptability is wide, can be used for compound fertilizer, medicine, chemical industry, feed, coal, metallurgy and other raw materials granulation, and can produce a variety of concentrations, a variety of types (including organic fertilizer, inorganic fertilizer, biological fertilizer, magnetic fertilizer, etc.) compound fertilizer.