METHOD OF SUPERFINE ALUMINIUM HYDROXIDE PREPARATION Russian patent published in 2009 - IPC C01F7/34

Abstract RU 2355638 C1

FIELD: chemistry.

SUBSTANCE: invention refers to the preparation the superfine aluminium hydroxide used as antipyren and filler. Superfine aluminium hydroxide is prepared by mixing the alkali aluminate and neutralising solutions. The water solution with density 1100-1300 kg/m³containing the bicarbonates and carbonates of alkali metals is used as neutralising solution. The neutralisation is carried out up to residual content of Na₂O_ky in the solution mixture 1-15 g/l.

EFFECT: invention allows to use the present method in production of the alumina by the agglomeration technique.

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RU 2 355 638 C1

Authors

Senjuta Aleksandr Sergeevich

Davydov Ioan Vladimirovich

Dates

2009-05-20—Published

2007-12-27—Filed