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2 547 833

(13)

(51)

IPC

C01F7/02(2006-01-01)

C01F7/30(2006-01-01)

C01F7/44(2006-01-01)

(21) (22)

Application

2013156403/04, 2013-02-04

(24)

Start date

2013-02-04

(22)

Actual filing date

2013-02-04

(45)

Published

2015-04-10

(72)

Inventor

Senjuta Aleksandr SergeevichPanov Andrej VladimirovichSmirnov Andrej Andreevich

(73)

Holder

Obshchestvo S Ogranichennoj Otvetstvennost'Ju Kompanija Rusal Inzhenerno-Tekhnologicheskij Tsentr"

METHOD OF OBTAINING ALUMINIUM OXIDE Russian patent published in 2015 - IPC C01F7/02 C01F7/30 C01F7/44

Abstract RU 2547833 C1

FIELD: chemistry.

SUBSTANCE: method includes processing aluminium salt with a solution of an alkaline reagent, washing the sediment and its thermal processing. As aluminium salt applied are crystals of aluminium hexahydrate chloride, which are processed with the excess of a water ammonia solution at a temperature of 20-80°C with the formation of boehmite. Thermal processing is realised at 450-650°C until aluminium oxide is formed.

EFFECT: invention makes it possible to obtain aluminium oxide in the from of separate particles with a specified structure and properties.

2 dwg

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RU 2 547 833 C1

Authors

Senjuta Aleksandr Sergeevich

Panov Andrej Vladimirovich

Smirnov Andrej Andreevich

Dates

2015-04-10—Published

2013-02-04—Filed