Factors affecting the processing fineness of jet mill
The main factors that affect the pulverization fineness of the jet mill are: material properties, processing capacity, gas pressure, feed particle size, raw material particle size distribution, whether it is a mixture, and so on.
Material properties: Generally speaking, the jet mill can be adapted to the crushing of all brittle materials. However, due to the different nature of the material, its crushing performance is also different. Due to the difference in the strength, density, hardness, viscosity, shape and electrical properties of various materials, it will inevitably lead to differences in the crushing results, and the strength of the material is an important influencing factor. In addition, due to the excessive moisture content of certain materials or the water or oil in the gas source, the properties of the crushed materials such as the increase in toughness and viscosity will affect the fineness of crushing.
Processing capacity: The same material processed by the jet mill has different crushing fineness due to the different processing capacity. Generally speaking, the throughput is directly proportional to the particle size of the product. However, if the processing volume is too small, there will be less chance of collision between particles, which will affect the fineness.
The working pressure of the gas of the jet mill: The jet mill uses the pressure energy of the fluid to convert into speed energy, so the higher the gas pressure, the higher the jet flow rate, which can increase the smashing energy, that is, the smashing effect.
Feed particle size: the same material will have different particle sizes after crushing due to different feed particle sizes. Of course, the smaller the particle size of the feed, the smaller the particle size of the product.
The particle size distribution of the raw materials: If the particle size of the feed is more uniform, the fineness and particle size distribution of the product will be better. If the particle size distribution of the feed is very wide and the thickness is very different, the result of the collision of the coarse particles and the fine particles during the crushing process will inevitably affect the crushing effect.
Single material and mixed material: Due to the difference in the nature of the various components in the mixed material, soft and hard particles or particles with high and low strength will collide with each other and other situations during crushing, which may affect the crushing effect.
The jet mill is mainly composed of jet mill, cyclone collector, dust collector, induced draft fan, electric control cabinet and so on. The jet mill is mainly suitable for the crushing mechanism, with a wide range of applications, high fineness of the finished product, and typical materials such as superhard diamond, silicon carbide, metal powder and other high-purity ceramic pigments. Converting the air part of the gas source into nitrogen, carbon dioxide and other inert gases can make the machine become an inert gas protection device, suitable for crushing and grading processing of easily oxidized materials.