Preparation method of high-stability magnesium hydroxide suspension

The invention discloses a preparation method of a high-stability magnesium hydroxide suspension, which comprises the following steps of: weighing a certain amount of water, conveying the water to a stirring tank 1, stirring, adding a certain amount of an assistant, adding weighed magnesium hydroxide dry powder into the stirring tank 1, rotating at high speed, stirring for a certain time, conveyingthe mixture to a stirring tank 2, and rotating at low speed; conveying the slurry to a water mill for grinding, and conveying the slurry to a stirring tank 3; taking a certain amount of water, conveying the water to a stirring tank 4, adding an anti-settling agent, adding the slurry in the stirring tank 3 into the stirring tank 4, and uniformly stirring; and conveying the slurry to an ultrasonicvibrating screen, and then conveying the slurry to a finished slurry tank. The high-stability magnesium hydroxide suspension prepared by the method is fine in granularity and uniform in distribution.The viscosity is low, and t