What are the advantages of ceramic-lined jet mill
The ceramic-lined jet mill is mainly composed of a feeding device, a crushing chamber, a discharge port, a steam distribution pipe and a nozzle. The material of the feed nozzle and the grinding nozzle is made of high-strength wear-resistant and high-temperature alloy, and the nozzle structure is supersonic design; the rest of the flow parts are lined with high-strength wear-resistant and high-temperature engineering ceramics, and the feed venturi tube , The ceramic middle ring, the lining of the discharge port, the ceramic upper cover and the ceramic lower cover are made of high-strength reaction sintered silicon carbide; the steam distribution pipe and the main body cover are all made of stainless steel and polished. The appearance of the whole machine is beautiful and compact. The ceramic lined jet mill can be used in conjunction with the jet classifier. According to the physical characteristics of the material and the purity requirements of the finished product, ceramic sheets are lined inside the equipment to increase wear resistance, reduce the impact of materials on the equipment, and increase the use of the equipment Life, and control the iron content of the material in the grinding and classification process. The ceramic-lined jet mill has successfully solved a series of problems such as the adhesion of battery materials, the lack of fineness, and uneven classification.
The working principle of the ceramic-lined jet mill: After being filtered and dried, compressed air is sprayed into the grinding chamber at high speed through the Laval nozzle, and the animal material is repeatedly collided and rubbed at the intersection of the high-pressure airflow to smash. The pulverized coarse and fine mixture is under negative pressure. The fan reaches the classification zone. Under the action of the strong centrifugal force generated by the high-speed rotating classification turbine, the coarse and fine materials are separated. The materials that meet the particle size requirements are collected by the cyclone separator and dust collector through the classification wheel, and the coarse particles descend and continue to grind in the grinding zone. .
The ceramic-lined jet mill has the following performance advantages:
1. It is suitable for dry grinding of various materials with Mohs hardness below 9, especially suitable for the grinding of materials with high hardness, high purity and high added value.
2. The breakthrough of particle acceleration technology has greatly improved the grinding efficiency and reduced the energy consumption. It has small over-crushing, good particle shape, narrow particle size distribution and no large particles, and the product particle size D97=3-74 microns can be adjusted arbitrarily.
3. During the grinding process, the airflow temperature is reduced due to the rapid expansion of the airflow, which is especially suitable for the grinding of heat sensitive, low melting point and volatile materials.
4. Materials collide and grind, which is different from mechanical pulverization, which relies on the impact grinding of materials such as blades or hammers, and the addition of ceramic lining, so the equipment is less worn and the product is of high purity.
5. It can be used in series with a multi-stage air classifier to produce products with multiple particle sizes at one time.
6. The ceramic-lined jet mill is compact in structure, easy to disassemble and clean, and the inner wall is smooth and has no dead corners.
7. The entire system runs in a closed vacuum with no dust, low noise, and the production process is clean and environmentally friendly.