Preparation technology of hexagonal plate magnesium hydroxide
A technology of magnesium hydroxide and hexagonal flakes, applied in the direction of magnesium hydroxide, etc., can solve the problems of expensive lithium hydroxide and higher cost of magnesium hydroxide modification, etc., and achieve improved mechanical strength, improved flame retardancy, and uniform particle size Effect
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[0047] (1) Magnesium chloride in the Salt Lake area of Qinghai is used as a raw material, and common magnesium hydroxide products are obtained through a general ammonia reaction. The moisture content is 56.12%.
[0048] (2) the above-mentioned magnesium hydroxide finished product is mixed with the slurry that mass concentration is 15%, joins in the compound transforming agent solution of lithium hydroxide and sodium hydroxide (the mole of lithium hydroxide and sodium hydroxide in the compound transforming agent solution The ratio is 1:4, the total alkali concentration of the conversion agent solution is 2mol / L), and the mixture is stirred evenly.
[0049] (3) Put it into a high-pressure reactor and react at a temperature of 140° C. for 4 hours; the reaction product is cooled, filtered, washed with water, dried and pulverized to obtain hexagonal flaky magnesium hydroxide. The yield is 98.79%.
[0050] Scanned by a laser electron scanning microscope, the product is a regular...
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