Method and device for producing a metal hydroxide

Details Method and device for producing a metal hydroxide Method and device for producing a metal hydroxide

2007-10-16

2007-10-16

Vanoy, Timothy C. (Department: 1754)

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Alkaline earth metal

C423S158000, C423S164000, C210S650000, C210S651000, C210S333010, C210S333100, C210S335000

Reexamination Certificate

active

10509206

ABSTRACT:
The invention concerns a method and an apparatus for producing a metal hydroxide, in particular magnesium hydroxide, from a salt solution, wherein the metal is firstly precipitated from the salt solution and the suspension produced in that way is then filtered. The object of the invention is to provide a method and an apparatus which permit simple inexpensive and rapid production of metal hydroxide, in particular magnesium hydroxide, in a high state of purity. According to the invention that is achieved in that the suspension is filtered through at least one filter (13-17) of a cross-flow filtration installation (13-17), and that a permeate produced by filtration of the suspension is fed to the cross-flow filtration installation (14-17) again.

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Benoit Fradin et al. “Crossflow microfiltration of magnesium hydroxide suspensions: determination of critical fluxes, measurement and modelling of fouling” Separation and Purification Tech., vol. 16, Issue 1, Jun. 10, 1999, pp. 25-45.

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