High-purity and low-oxygen-content aluminum nitride powder processing equipment and preparation process
A low oxygen content, powder processing technology, applied in the direction of nitrogen compounds, inorganic chemistry, chemical instruments and methods, etc., can solve the problems of low oxygen content, cumbersome preparation process, etc., achieve high efficiency, good drying effect, and speed up preparation Effect
Active Publication Date: 2022-05-10
FUJIAN HUAQING ELECTRONICS MATERIAL TECH
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[0004] Aiming at the deficiencies of the prior art, the present invention provides a high-purity and low-oxygen aluminum nitride powder processing equipment and preparation process, which has the advantages of being easy to use, Solve the problem of cumbersome preparation process
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[0034] A process for preparing aluminum nitride powder with high purity and low oxygen content, comprising the following steps:
[0035] S1 Mixing: Send the raw materials required for preparation into the mixing box, stir and mix;
[0036] S2 water filtration: the mixture obtained in step S1 is filtered through a filter cloth to dry;
[0037] S3 drying: sending the water-dried mixture obtained in step S2 into a drying box;
[0038] S4 Carbothermal reduction: The mixture obtained in step S3 is subjected to carbothermal reduction and decarburization to obtain high-purity aluminum nitride powder with low oxygen content. The temperature of carbothermal reduction is 1400°C, and the time of carbothermal reduction is 3h .
[0039] Compared with the existing technology: by setting the mixing assembly 2, the water filtering assembly 3 and the drying assembly 4, the raw materials required for the preparation are sent into the inside of the mixing box 201 through the feed hopper 203, a...
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The invention relates to the technical field of aluminum nitride powder processing, in particular to high-purity low-oxygen-content aluminum nitride powder processing equipment which comprises a base, a mixing assembly, a water filtering assembly and a drying assembly, first fixing rods are fixedly installed on the periphery of the left side of the top of the base, and third fixing rods are fixedly installed on the periphery of the right side of the top of the base; the mixing assembly comprises a mixing box, and supporting rods are fixedly installed on the periphery of the top of the mixing box. According to the high-purity and low-oxygen-content aluminum nitride powder processing equipment and the preparation process, by arranging the mixing assembly, the water filtering assembly and the drying assembly, raw materials needed for preparation are fed into the mixing box through a feeding hopper, a mixing motor is started to start to mix the raw materials, and a drying device can complete drying of a water filtering mixture; the material pressing air cylinder is started to enable the pressing plate to extrude the raw materials to quickly complete water filtering, frequent manual feeding or collection of materials obtained in each preparation step is not needed, and the preparation speed is greatly increased.
Description
technical field [0001] The invention relates to the technical field of aluminum nitride powder processing, in particular to high-purity and low-oxygen content aluminum nitride powder processing equipment and a preparation process. Background technique [0002] Aluminum nitride is a covalent bond compound with a chemical formula of AIN. It is an atomic crystal, belonging to diamond-like nitride, hexagonal crystal system, and wurtzite crystal structure. It is non-toxic and white or off-white. Aluminum nitride can be stable up to 2200 ℃, high strength at room temperature, and the strength decreases slowly with the increase of temperature, good thermal conductivity, small thermal expansion coefficient, is a good thermal shock resistance material, strong resistance to molten metal erosion, is cast pure iron, aluminum or aluminum Alloy is an ideal crucible material. Aluminum nitride is also an electrical insulator with good dielectric properties. It is also promising for electrica...
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IPC IPC(8): C01B21/072
CPCC01B21/072
Inventor 黄文思杨大胜施纯锡冯家伟
Owner FUJIAN HUAQING ELECTRONICS MATERIAL TECH