For organic fertilizer, granulation is an indispensable process in the organic fertilizer production line, there are many equipment models of organic fertilizer granulator, through the comparison of granulator models, among which disk granulator and roller extrusion granulator due to the difference in the granulation production process, so that users in the choice of these two models have a great difference, from the production process, These two kinds of disc granulator and roll extrusion granulator granulation process compared with each other have advantages, from the production process, disc granulator and roll extrusion granulator processing technology is not too complicated. For example, the difference between the two kinds of equipment in the appearance of granulation process is that the disk granulator particle size is high in freedom, smooth and rounded, and the roller extrusion granulator particle size is relatively uniform. But there are some defects in appearance. However, it can be compensated by the organic fertilizer round polishing machine. But from a professional point of view is completely different, they can not make up for each other, organic fertilizer using animal manure through professional organic fertilizer equipment deep processing, mainly based on organic matter, cellulose more poor forming conditions, and add fertilizer function of live bacteria, the production process to not contact high temperature and other characteristics. It is not appropriate to use the round plate granulation and drum granulation methods, because these two processes require high grinding of raw materials, high granulation water, for this drying load, the effective bacteria loss is also large, and the pelleting rate is low, the dust in the production process is very large, and the operating environment is very poor, so for the production of organic biological fertilizer, it should be produced by environmental extrusion method better, environmental extrusion on The raw material grinding requirements are low, the molding rate is high, the particle water content is low, the drying load is small, the loss of effective bacteria can be reduced, the dust is small, and the operating environment is better.