Introduction of six advantages of jet mill

Since the advent of jet pulverization and classification equipment in the 1930s, various types have been continuously updated and the structure has been continuously improved, such as flat jet mills, circulating jet mills, impingement jet mills, jet mills, target jet mills and fluidized bed (jet) jet mills Wait.

Fluidized bed jet mill has the characteristics of low energy consumption, light wear, low pollution, low noise, fine particle size, uniform distribution, etc. It is widely used in synthetic resins, phenolic resins, polyvinyl chloride, pigments and dyes, powder coatings, colorants, and medicine , Cosmetics, advanced ceramics, magnetic powder, abrasives, metal powder, food, flavor, stearic acid, fat, wax, mineral powder, pesticide and wettable powder production.

The main advantages are as follows:

(1) The linear impact crushing and surface impact crushing of the traditional jet mill are transformed into three-dimensional impact crushing. The high-speed airflow generated by the jet impact is fully utilized in the material flow of the crushing chamber to generate gas-solid crushing and classified circulating flow in the crushing zone. Similar to the effect of fluidization, the efficiency of impact crushing and the comprehensive utilization of energy are improved. Compared with other traditional methods, energy consumption is reduced by 30%.

(2) The impact crushing zone and the gas-solid flow zone are placed in the middle space of the crushing chamber to avoid the impact erosion of the material driven by the high-speed airflow on the crushing chamber wall, and improve the most serious wear problem during the jet impact crushing process. Reduce the possibility of material contamination.

(3) Using high-purity nitrogen, argon and other protective gases as the working medium to prevent oxidation, the closed-loop operating gas consumption is small and the cost is low.

(4) In the process of fully closed loop operation, there is no dust flying, no pollution to the environment, and no harm to the human body.

(5) After jet mill pulverization, the activity of the powder is improved. The energy of the high-speed jet in the jet milling and classification process not only breaks the particles, but also changes the internal structure of the particles, especially the surface state to a certain extent. Gas flow can remove several atoms or ions from the particle lattice, resulting in mechanical loss of the crystal structure. In this way, with the ultrafine grinding of the powder material, the surface energy or internal energy of the particles increases, and the activity of the particles increases. The increase in particle activity is not only conducive to the progress of the chemical reaction, but also conducive to the adsorption and coating of the particles.

(6) The product has fine particle size, large output, suitable for large-scale production, high particle size classification accuracy, narrow product particle size distribution, and easy adjustment of product particle size.