The development of straw formation equipment of flat die pellet mill

At the beginning, it was mainly used to process the pellet as feedstuff. But recent years, people tak it use in production of wood pellets through improving the quality of main parts. The material can be waste biomass material such as sawdust, straw etc.Due to the reasons that differences of processing flat die technology and main processing material objects with foreign advanced country, there is not enough research in the aspect of flat die pellet mill, and the biggest diameter of flat die is only 400mm at home. In 2000, the Nanjing agricultural mechanical research Institute of agriculture department has undertakes the project of introducing the international advanced agriculture technology (simple as 948)--straw pellet mill processing technology and equipment introducing. On the basis of absorbing the international advanced technology of Famous German Kahl Company of large scale flat die pellet mill 38-780, combining with our country’s practice, it has carried out many technology improvement and creation.  On December 2003, the project has been passed the acceptance check of agriculture departs of 948 projects.
 


Comparing with other processing technology of crop straw formation technology, the large scale flat die has several advantages. One is the wide applying of raw material. The flat die pellet mill has the big space for compression, it can use the compression roller with the big diameter, so the material like straw, dry beet, rice husk, sawdust which has the big volume and long fiber material are fit for crushing and pelletizing, it has decreased the standard of demand for the particle size. In addition, the moisture content of raw material is about 15-25% (the best is 18%) during compressing the fiber content material by flat die pellet mill. Under the general condition, there is no use to dry the material. The second is the big output. After the testing by farm machinery station in Jiang Su province, the production is about 2100kg/h when the flat dies pellet millSZLP-780 process the material of 100% of alfalfa meal. In the followed tests of making pellet from sawdust, the yield is up to about 1500g/h when the pellet has density of about 1100 kg/m3, which is currently the current formation pellet fuel equipment with the biggest production. The third is the low power consumption per ton. On the one hand, the flat die pellet mill has big space for compressing and big diameter of compression roller, the material with the big particles size can be compressed into pellet; on the other hand, the surface area of flat die has high ratio comparing with ring die pellet mill. It has many holes for discharging, and the density and size of the pellet are uniform. The fourth is the long service life of roller. Due to the big difference of the work principle, line speed of flat die pellet mill is lower than ring die pellet mill which the service life can be increased. The fifth is the density of pelletizing can be adjusted. The gaps and pressure between the roller and die can be adjusted through the central screw adjusted device, it is easy to operate, which not only produce the pellet feed with lower and middle density, but also produce the pellet mill with high density. One machine has many functions. 

Kingman boasts the best pellet mill manufacturer and supplier of China. Our main products include series of flat die pellet mill, wood pellet mill, crusher, biomass pellet mill production line etc. Our products have been exported to American, German, Russian, Brazil and other 50 countries. Welcome to investigate our company and welcome criticism from all quarters, in order to better service to you! If you have any question to our products, please feel free to contact us!

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