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2 326 817

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(51)

IPC

C01F7/38(2006-01-01)

(21) (22)

Application

2004134501/15, 2004-11-25

(24)

Start date

2004-11-25

(22)

Actual filing date

2004-11-25

(45)

Published

2008-06-20

(72)

Inventor

Anashkin Vjacheslav SerafimovichBaeva Natal'Ja Evgen'EvnaZharov Anatolij FedorovichZusman Mikhail VladimirovichPerestoronina Marina AlekseevnaPustynnykh Evgenij Vasil'EvichSkornjakov Vladimir Il'IchSmoljanitskij Boris IsaakovichChernoskutov Valentin StepanovichFomin Ehduard Sergeevich

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Aljuminievaja Kompanija"Otkrytoe Aktsionernoe Obshchestvo Nauchno-Issledovatel'Skij I Proektnyj Institut Aljuminievoj Promyshlennosti

METHOD OF ALUMINA CONTAINING RAW MATERIAL PROCESSING INTO ALUMINA Russian patent published in 2008 - IPC C01F7/38

Abstract RU 2326817 C2

FIELD: metallurgy.

SUBSTANCE: method of processing includes charge preparation out of high ferriferrous chamotte containing bauxite, soda ash, and calcium containing addition, then reduction of speck and its leaching. Dosage of calcium containing addition is performed on the base of molar ratio CaO:(FeO+MgO) in bauxite chamoisite which is equal to 2.45-2.85:1.0. As a calcium containing compound either limestone CaCo₃and/or tricalcium hydroaluminate 3CaO-Al₂O₃-6H₂O are used. Sodium sulfate is introduced in the compound of soda sulfate sediment of alumina production.

EFFECT: extraction of valuable components is increased with reduction of specific consumption of limestone and electrical power.

3 cl, 2 tbl, 4 ex

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RU 2 326 817 C2

Authors

Anashkin Vjacheslav Serafimovich

Baeva Natal'Ja Evgen'Evna

Zharov Anatolij Fedorovich

Zusman Mikhail Vladimirovich

Perestoronina Marina Alekseevna

Pustynnykh Evgenij Vasil'Evich

Skornjakov Vladimir Il'Ich

Smoljanitskij Boris Isaakovich

Chernoskutov Valentin Stepanovich

Fomin Ehduard Sergeevich

Dates

2008-06-20—Published

2004-11-25—Filed