Process for producing aluminum hydroxide from...

Details Process for producing aluminum hydroxide from... Process for producing aluminum hydroxide from...

C - Chemistry, Metallurgy

01

F

C01F 7/06 (2006.01) C01F 7/34 (2006.01)

Patent

CA 2288815

The present invention provides a process for producing aluminum hydroxide with little contamination by silica at a high yield, while suppressing losses of consumed alumina and alkaline components. The process comprises the steps of mixing a first alumina-containing slurry with a preheated alkaline aqueous solution, extracting alumina from the mixture, separating a dissolution residue from the mixture to obtain a solution, mixing the solution with a second alumina-containing slurry, extracting alumina from the mixture, and precipitating aluminum hydroxide after a desilication treatment.

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