REAGENT FOR PRODUCING ALUMINIUM HYDROXIDE BY THE PRECIPITATION METHOD AND METHOD FOR PRODUCING ALUMINIUM HYDROXIDE BY THE PRECIPITATION METHOD USING THE REAGENT (VARIANTS) Russian patent published in 2021 - IPC C01F7/02 C01F7/04 

Abstract RU 2758848 C1

FIELD: chemistry.

SUBSTANCE: invention relates to a method for producing a solution of sodium aluminate applied as a reagent in methods for producing aluminium hydroxide. Technical result is achieved due to the reduction in the content of sodium oxide to less than 0.010% wt., iron oxide to less than 0.010% wt., achieved by applying aluminium nitrate solutions and a reagent - a solution of sodium aluminate obtained from technical aluminum hydroxide - for deposition of aluminium hydroxide.

EFFECT: increase in the purity of aluminium hydroxide of boehmitic, pseudo-boehmitic or bayeritic modifications.

4 cl, 1 tbl, 11 ex

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RU 2 758 848 C1

Authors

Petrova Ekaterina Grigorevna

Maslobojshchikova Olga Vasilevna

Fadeev Vadim Vladimirovich

Zaglyadova Svetlana Vyacheslavovna

Loginova Anna Nikolaevna

Sheloumov Aleksej Mikhajlovich

Dates

2021-11-02Published

2020-10-07Filed