Jet mill is a kind of equipment. Under the action of high-speed airflow, materials are crushed by the impact between particles, the impact and shear of the airflow on the materials, and the impact, friction and shear between the materials and other parts. According to reports, since scientists proposed a patent for crushing using air flow energy in 1882, various types of jet mills have appeared on the market. At present, jet mills widely used in industry mainly include jet mills, circulating mills, flat mills and fluidized bed mills. Among them, flat plate and fluidized bed jet mills are widely used in medicine, pesticides and other fields.

According to industry introduction, compared with mechanical pulverizers, jet mills have high crushing strength and high energy utilization rate, which can reach 2%-10%, while ordinary pulverizers are only 0.6%. The structure of the equipment is simple, and the disinfection and cleaning are convenient. The size of the crushed product is fine, up to a few microns or even sub-micron, keeping the particles regular and smooth on the surface. In addition, the jet mill can realize the combined operation of crushing and drying, crushing and mixing, crushing and chemical reaction.

Although the jet mill has obvious advantages, it also has some disadvantages, such as many auxiliary equipment and high cost. When the crushing system is blocked, materials will be dumped, and a large amount of dust will be sprayed out, which will deteriorate the working environment; crushed materials have limitations, such as materials with more oil, water, and fibers that are not easy to be crushed. Many users also report that although domestic jet mills are not expensive, they still have defects such as slow speed and loud noise. It is understood that after 20 years of development, China's jet mill machinery industry has a very large market scale, involving many fields such as pharmaceuticals and chemicals. However, from the overall level of the industry, although domestic jet mills are not expensive, my country's jet mill technology is relatively backward compared with foreign countries, and its development is subject to certain restrictions.

Some experts said that at present, domestic R&D jet mill companies are facing over 90% overcapacity. Therefore, the sustainable development of the jet mill industry needs to comprehensively consider a variety of factors, get rid of the problems of slow grinding speed, limited materials, high noise, and low efficiency, and use high-tech jet mills to conquer the market. With the improvement of pulverization technology and the improvement of equipment structure, domestic jet mills are exploring the direction of automation and large-scale, gradually overcoming their own shortcomings.

According to reports, a new type of combined jet mill in China has been developed, which is superior to traditional mechanical and jet mills. This jet mill is inexpensive and has a small footprint, no dust pollution, low energy consumption, short process flow, wide crushing range, small heat generation, fine particle size of the finished product, unlimited water content of the material, and no feed particle size. The restricted features are comparable to imported equipment.

With the advent of the era of intelligent automation, intelligence and automation have become an inevitable trend in the development of the machinery industry in the future, and my country's jet mill industry is breaking through the development bottleneck, and the future development prospects are promising.