Innovative food development, such as nano-selenium and zinc food, functional health food, entertainment and leisure food, life-saving and military food, nano-bio-conserved agent, etc. have an independent, novelty and other innovative food research and development, Ultrafine pulverization and nanotechnology in the air flow.
Toxide is mainly used in the chemical industry (such as chemical reagents, bismuth salts, etc.), glass industry (mainly used in coloring), electronics industry (electronic ceramics, etc.) and other industries (such as fire paper manufacturing, Nuclear reactor fuel, etc.). Among them, the electronics industry is the most widely used industry, mainly used in the fields of pressure sensitive resistance, thermistor, zinc oxide arrester, and image tubes. Electronic ceramic powder material electronic ceramic field is a ripe and vibrant field of cerium oxide applications. Bismar oxide as an important additive in electronic ceramic powder material, the purity is generally required to 99.5%, so the requirements for the processing equipment of the cerium oxide powder material are also relatively high, and the current industry usually uses fluidized bed gas flow pulverizer. The raw material is prepared, and after the practical application of multi-party, the fluidized bed airflow pulverizer can not only achieve a more fine particle size, but also effectively protect its high purity while machining the cerium oxide.
The fluidized bed airflow pulverizer prepared a method of supercodium oxide powder, which is to add crude bismuth particles to the pulverized chamber of the fluidized bed airflow pulverizer to high speed The gas stream is a working fluid. After the nozzle pressurization, the gas stream is 300-400 m / s, and the crushing chamber is incorporated, and the crude bismuth in the pulverizing chamber simultaneously performs oxidation and pulverization, the resulting oxidation and pulverized materials will enter the impeller fractionation with the air flow. The zonage is graded in the zone to obtain a cerium oxide powder having an average particle size of 2-2.5 microns.
From the above, the fluidized bed gas flow pulverizer is only less contact between the raw materials and the equipment, so that the purity of the feedstock can be maintained, and the fluidized bed gas flow pulverizer can also change the equipment material. Increase the lining and other means to further eliminate its pollution source.