Ultrafine pulverized equipment can be divided into: mechanical impact pulverizer, vibration grinding, Jet Mill, also known as gas flow, stirring, etc.
The average particle size of the material after gas flow is thin, the particle size distribution is narrow, the particle surface is smooth, the particle shape is standardized, the purity is high, the activity is high, and the dispersibility is good; the low melting point and the thermal material and the biologically active article are compressed by Jet Mill. For power, the adiabatic expansion of the compressed gas in the nozzle will reduce the temperature of the system, according to statistics, about 25% of Jet Mill, which is used for drugs. Ultrafine preparation for drugs. Moreover, if N2, CO2 is used, a pulverization in an inert atmosphere can be performed in a special occasion. The gas flow is pulverized in a sterile state; the production process is continuous, the production capacity is large, self-controlled, and the automation is high. However, the production cycle of mechanical impact pulverizer, vibration grinding, stirring mill, etc. is often longer, thereby causing low production efficiency; a large amount of heat is generated when the material is pulverized, resulting in deterioration of thermal materials; and equipment wear will contaminate products.
Therefore, these mechanical crushers have not fully satisfied that people have become increasingly high and higher in ultrafine powder, and the airflow crushing equipment has a trend of replacing mechanical pulverities in the production of super fine powder. However, there are also some shortcomings in gas flow: the equipment is high, energy consumption, large processing cost is also large; the single-machine processing capacity is less than 2T / h, not suitable for large-scale production; product particle size is difficult to achieve submicron grade At 10 um or less, the output is greatly reduced, and the cost of processing is rapidly increased. Since the 1930s, Jet Mill has been in the efforts of many researchers. The structure is constantly updated, and the species is increasing. It has a flat or disc air, circulating gas flow grinding, rushing gas flow, fluidization Bed gas flow mill, target gas flow mill, supersonic speed flow mill, etc.
Ultra-fine Jet Mill is much variety, the structure is different, and each model has its advantages. In recent years, crushing equipment has been greatly improved in the previous basis, and its structure is constantly improving, and the crushing performance is continuously improved. In order to meet the development of information technology, biotechnology and new material technology, the granularity, purity and particle size distribution of powder products, ultrafine gas flowIn the study of crushing technology, we should pay attention to the following aspects: on the existing basis, improve, optimize ultrafine gas flow crushing equipment, develop new equipment, and pay attention to the matching design of smash, grading system; large equipment, in the above In the ultrafine Jet Mill, in comparison, the fluidized bed has a significant advantage of hit Jet Mill, so it should be strengthened to guide the design of the crushing equipment; because Jet Mill's largest disadvantages are low energy utilization rate, Therefore, it should be sought to reduce energy consumption, increase energy utilization. Welcome to Shandong AlPa Powder Technology Co., Ltd., above with the genus of crusher equipment.
