Usually, when we choose the crushing equipment, we must not only consider whether the crushing size of the crushing equipment can meet the standard, but also for some materials with special requirements, we need to consider whether it will be contaminated during the crushing process. Pulverizing equipment is usually divided into two categories: mechanical shredders and air flow shredders. At the same time, in the production, when the material requirements are extremely strict, there can be no pollution, you can choose different anti-pollution layers according to the characteristics of the material, the contact part of the equipment and the material, and the operation parts.
Mechanical crusher is the use of high-speed rotary hammer head, tooth plate, etc. on the impact of the crushed material, through the intense impact of the material and the rotary body, high-speed impact between the material and the high-speed flight of the material and the shear grinding of the rotor and the stator or the side wall, to achieve the purpose of ultrafine crushing of the material. However, because the material needs to be in contact with the hammer of the equipment when crushing, it will inevitably produce impurities and be polluted.
Air mill is a kind of ultrafine grinding equipment which makes the particles self-collide, friction or collide with the inner wall of the equipment and cause the particles to be crushed by the strong multiphase turbulence formed when the high-speed air jet is ejected. That is to say, in the crushing process, the material will not be contaminated by collision with the equipment, so the air mill is especially suitable for ultra-fine grinding with high material purity requirements.
At present, the main types of air disintegrators widely used in industry are: flat (horizontal disc) air disintegrators, circulation tube (runway) air disintegrators, and spray (reverse) air disintegrators. The main crushing area of the jet mill is near the nozzle, and the frequency of collision between particles is much higher than the collision between particles and the wall, so the main crushing effect of the jet mill is mainly the impact collision between particles. Compared with other ultrafine pulverizers, the airflow mill has the following advantages:
1, air mill crushing only depends on the energy of air movement, the unit does not need special moving parts.
2, the adiabatic expansion of the gas is accelerated, and accompanied by cooling, the particle high-speed collision will make the temperature rise, but because the adiabatic expansion reduces the temperature, so in the entire crushing process, the temperature of the material is not high, which is especially suitable for the crushing of heat-sensitive or low melting point materials.
3, the air flow crusher is mainly particle collision, almost pollution-free materials, and the surface of the material is smooth, high purity, good dispersion.
Therefore, the air mill is widely used in the ultrafine grinding of chemical raw materials and high-purity non-metallic materials, and the fineness of the product can reach 1-5 microns. Usually, when we choose the crushing equipment, we must not only consider whether the crushing size of the crushing equipment can meet the standard, but also for some materials with special requirements, we need to consider whether it will be contaminated during the crushing process. Pulverizing equipment is usually divided into two categories: mechanical shredders and air flow shredders. At the same time, in the production, when the material requirements are extremely strict, there can be no pollution, you can choose different anti-pollution layers according to the characteristics of the material, the contact part of the equipment and the material, and the operation parts.
Mechanical crusher is the use of high-speed rotary hammer head, blade, tooth plate, bar body on the impact of the crushed material, through the intense impact of the material and the rotary body, high-speed impact between the material and the high-speed flight of the material and the shear grinding of the rotor and the stator or side wall, to achieve the purpose of ultrafine crushing of the material. However, because the material needs to be in contact with the hammer of the equipment when crushing, it will inevitably produce impurities and be polluted. The airflow mill is a kind of ultrafine grinding equipment which makes the particles self-collide, friction or collide with the inner wall of the equipment and cause the particles to be crushed by the strong multiphase turbulence formed by the high-speed airflow. That is to say, the material in the crushing process, will not collide with the equipment and will not be contaminated, so the air mill is especially suitable for ultra-fine grinding with high material purity requirements.
At present, the main types of air disintegrators widely used in industry are: flat (horizontal disc) air disintegrators, circulation tube (runway) air disintegrators, and spray (reverse) air disintegrators. The main crushing area of the jet mill is near the nozzle, and the frequency of collision between particles is much higher than the collision between particles and the wall, so the main crushing effect of the jet mill is mainly the impact collision between particles. Compared with other ultrafine pulverizers, the airflow mill has the following advantages:
1, air mill crushing only depends on the energy of air movement, the unit does not need special moving parts.
2, the adiabatic expansion of the gas is accelerated, and accompanied by cooling, the particle high-speed collision will make the temperature rise, but because the adiabatic expansion reduces the temperature, so in the entire crushing process, the temperature of the material is not high, which is especially suitable for the crushing of heat-sensitive or low melting point materials.
3, the air flow crusher is mainly particle collision, almost pollution-free materials, and the surface of the material is smooth, high purity, good dispersion.
Therefore, the air mill is widely used in the ultrafine grinding of chemical raw materials and high-purity non-metallic materials, and the fineness of the product can reach 1-5 microns.
To learn more about our Fangyuan products, please click this link：https://www.fine-mill.com/products.
