Micron-scale low hydroxyl OH<-> crystal powder production process method

Abstract

The present invention discloses a micron-scale low hydroxyl OH<-> crystal powder production process method, which comprises the following steps: (1) selecting a high purity crystal raw material and treat; (2) crushing the high purity crystal raw material; (3) carrying out secondary crushing on the crushed crystal powder; (4) carrying out cavitation vibration on the obtained crystal powder by using an ultrasonic vibration machine; (5) carrying out acid washing 4 on the obtained crystal powder; (6) carrying out high temperature baking on the obtained crystal powder; (7) carrying out secondary acoustic cavitation on the baked crystal powder; (8) carrying out magnetic separation impurity removal on the obtained crystal powder; and (9) carrying out high temperature hydroxyl removal and impurity removal purification on the impurity-removed crystal powder. The method is simple. In addition, low hydroxyl OH<-> content is less than or equal to 5 pm, and crystal powder purity is more than or equal to 99.99999%.

Description

technical field [0001] The invention relates to the field of inorganic non-metal processing, in particular to a micron-scale low hydroxyl OH - The production process of crystal powder. Background technique [0002] High-purity crystal powder is the key raw material for making crystal tubes, crystal lamps, etc. Hydroxyl OH in crystal raw materials - The level directly affects the purity of the product. Micron level low hydroxyl OH - Crystal powder is one of the key materials widely used in domestic high-end technical fields, and it is also a key application material for crystal ceramics and special high-temperature-resistant devices. At present, the traditional domestic production process of high-purity crystal powder is through baking, roller Crushing, sieving, acid immersion, medium magnetic, chemical flotation, high magnetic and other technological processes are produced, so the final high-purity crystal powder has a high impurity content, and the mesh number is genera...

AI Technical Summary

Problems solved by technology

Micron level low hydroxyl OH - Crystal powder is one of the key materials widely used in domestic high-end technical fields, and it is also a key application material for crystal ceramics and special high-temperature-resistant devices. At present, the traditional domestic production process of high-purity crystal powder is through baking, roller Crushing, sieving, acid immersion, medium magnetic, chemical flotation, high magnetic and other technological processes are produced, so the final high-purity crystal powder has a high impurity content, and the mesh number is generally between 80-120 mesh, which cannot be used in crystal Ceramics and making special high temperature resistant devices