Jet mill:
Jet mill is also known as fluidized bed jet mill, fluidized chamber jet mill, high-pressure mill, low-pressure mill, etc. After the detailed classification of the mill, Xiaomo will introduce it in detail. Please come to visit more in the future. The advantage of the jet mill mainly lies in its crushing principle. The crushing principle of the jet mill is to use air as the crushing power. After the pulverizer, the airflow pulverizer is equipped with a buffer air bag, which plays the role of uniform air volume. The air source passes through the buffer air bag and then is sprayed out through the Laval nozzle. The design flow rate of the Laval nozzle is Mach 2, (the speed of sound is 1 The air ejected by Mach) drives the movement of the material to realize the collision and crushing between the material and the material. Because the material collides with the material itself, the purity of the material is completely non-polluting, and because the air is used as the crushing power, so the equipment Wear and tear itself is minimal. This is the advantage of jet milling, high material purity and less wearing parts. The disadvantages of the jet mill come out. The purity of the material is high, and the wearing parts are less, so the energy consumption will be high. Using air as the power is equivalent to adding decoration to the car. The effect is also increased. Each set of jet mill needs to be equipped with a set of air compressor system, which increases the purchase cost and the use cost.
Impact mill:
Impact mill is relatively the most familiar equipment for everyone, but impact pulverizers are just a general term, such as impact impact pulverizers, vortex pulverizers, hammer pulverizers, blade pulverizers, etc. The main crushing principle of a mechanical pulverizer is forced grinding and forced crushing. The motor drives the crushing disc (hammer, blade, disc) to perform high-speed rotating crushing. General impact crushing opportunities There is a motor to drive a rotor, and then there will be a fixed wall, and the rotor will drive the material, and then through the collision of the rotor and the cooperation of the stator, a shear collision crush will be carried out, because the crushing principle of the impact pulverizer is forced crushing. The efficiency must be higher than that of the jet mill. If the crushing efficiency is high, there will be wearing parts, and the high-speed rotating friction of the rotor will cause wear. After a long time, the wear will be serious, and problems such as reduced crushing ability and equipment vibration will occur. , In this case, it is necessary to replace the accessories. If the equipment is worn out, if the accessories are replaced, the problem of material purity will appear again. The crushing efficiency of the impact pulverizer is high, but there are wearing parts, which will affect the purity of the material.
The jet mill has high energy consumption, low output, almost no wearing parts, and high material purity.
The impact mill has low energy consumption, high output, and will produce wearing parts, which will affect the purity of the material.
The above summary is based on the comparison of most of the same materials, because the advantages and disadvantages of jet mills and impact mill are not limited to this, and the above comparisons are only made in the case of most of the same materials. The jet mill will have a higher output than the mechanical mill for a certain material. In the case of different materials, it is impossible to compare the two types of equipment, because some materials are suitable for jet mills, and some materials are suitable for mechanical pulverizers.