Microgrinding and superfine grinding

Microcomminution and superfine comminution technology is a new cross-processing technology formed in recent 50 years to adapt to the development of modern chemical industry, electronics, biology and other new materials and new technology. With the development of feed processing technology, especially the development of special animal feed, this technology has been popularized and utilized in feed engineering.

There are two aspects to the application of micro - grinding technology in feed industry. One is due to the compound feed containing trace component part, its content is very small, components, accounting for about 1.0% of trace components in order to improve the total number of particles, ensure its scattered and mixed evenly, it must be crushed very thin, such as when the adding amount of compound feed per ton for 10 mg, its size is not more than 5. The second is for aquatic feed and special animal feed, in order to make it in the processing engineering to obtain good technology and ensure the good quality of feed products, the requirements of the raw materials for micro grinding or ultra-fine grinding.

Microcomminution and ultra-micro comminution equipment

Micro-crushing and ultra-fine crushing equipment mainly includes micro-grinding machine, fine classification, material transportation, medium separation, dust removal, dehydration, control, detection and other process equipment, by the above equipment and instruments constitute a complete micro-crushing process, in the process layout has open circuit and closed circuit micro-crushing.

At present, the microgrinding method used is mainly mechanical grinding, including high speed mechanical impact mill, suspended roller mill, ball mill, disc mill, vibration mill, airflow mill and colloid mill. In feed processing, fish and shrimp and other special feed factories are commonly used in large output and coarse product particle size micro mill. On this occasion, the crushed material is mostly organic matter such as corn, fish meal and soybean meal, which does not require too fine particle size, but the yield is high.

Requirements for particle size of micro-crushing

Due to the development of aquatic feed and other special feed, it is required to have a fine crushing particle size. For example, shrimp and some fish larvae require 95% of feed size less than 60 mesh (250), and sometimes 95% of feed size more than 80 mesh (177), or even 100 mesh.