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2 175 641

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Application

97111408/12, 1997-07-08

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Start date

1997-07-08

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Actual filing date

1997-07-08

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Published

2001-11-10

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Inventor

Teljatnikov G.V.Bazanov I.I.Suss A.G.Timofeeva T.N.Mil'Rud S.M.

(73)

Holder

Aktsionernoe Obshchestvo Otkrytogo Tipa Aljuminievo-Magnievyj Institut"

METHOD OF PREPARING ALUMINIUM HYDROXIDE Russian patent published in 2001 - IPC

Abstract RU 2175641 C2

FIELD: preparation of aluminium hydroxide and alumina. SUBSTANCE: method comprises decomposing aluminate solution in the presence of seed, filtering aluminium hydroxide and drying thereof. During drying process, aluminium hydroxide is classified to grain size of less than 40 mcm. Dry aluminium hydroxide having fraction of less than 40 mcm is used as seed for decomposing aluminate solution or as commercial product. Dry aluminium hydroxide having fraction of greater than 40 mcm is calcined to give larger aluminium oxide. EFFECT: reduced content of impurities in the resulting product. 1 dwg

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RU 2 175 641 C2

Authors

Teljatnikov G.V.

Bazanov I.I.

Suss A.G.

Timofeeva T.N.

Mil'Rud S.M.

Dates

2001-11-10—Published

1997-07-08—Filed

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