Preparation method of submicron magnesium hydroxide
A magnesium hydroxide, sub-micron technology, applied in the field of inorganic materials and microchemical engineering, can solve the problems of increasing the complexity of the production process and production costs, achieve continuous precipitation process, strong process controllability, and increase growth rate Effect
Inactive Publication Date: 2020-01-14
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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The invention provides a preparation method of submicron magnesium hydroxide. The mixed aqueous solution of sodium hydroxide and sodium chloride is used as precipitant to precipitate with magnesium chloride aqueous solution in the microreactor at a certain temperature. The reaction slurry flows out of the microreactor and directly enters a hydrothermal synthesis kettle, and is subjected to hydrothermal treatment at a certain temperature. After hydrothermal treatment, the slurry is filtered, washed and dried to obtain submicron magnesium hydroxide. Compared with only using sodium hydroxide as precipitant, the magnesium hydroxide prepared by the method has larger average particle size, is easier to filter and wash under the same hydrothermal conditions, and significantly improves the production efficiency. In addition, because the precipitation reaction is carried out in the microreactor, the preparation process is semi-continuous and easy to enlarge, and the repeatability between product batches is good.
Application Domain
Magnesium hydroxide
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