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2 244 682

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IPC

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Application

2003113133/15, 2003-05-05

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Start date

2003-05-05

(22)

Actual filing date

2003-05-05

(45)

Published

2005-01-20

(72)

Inventor

Belikov E.A.Bogdanov V.B.Isakov E.A.Kosterev A.P.Kuznetsov A.A.Lazarev V.G.Latkin I.L.Pchelin I.I.

(73)

Holder

Zakrytoe Aktsionernoe Obshchestvo

SODA MANUFACTURE PROCESS Russian patent published in 2005 - IPC

Abstract RU 2244682 C1

FIELD: nonferrous metallurgy and inorganic compounds technology.

SUBSTANCE: invention is dealing with processing of carbonate solution produced in complex procedure of nepheline feed into alumina and soda products. Manufacture of soda comprises dissolving double salt in evaporation-concentrated carbonate solution, which is further concentrated to form soda suspension, which is divided, by the aid of hydraulic classification method, into two streams. Each of them is separated into soda and soda mother liquor. Soda mother liquors are combined and treated to separate potassium sulfate. Potassium sulfate mother liquor is concentrated to give double salt suspension. Precipitated double salt is separated. Purity of soda product is 98-98.5%.

EFFECT: increased purity of soda product.

3 dwg

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RU 2 244 682 C1

Authors

Belikov E.A.

Bogdanov V.B.

Isakov E.A.

Kosterev A.P.

Kuznetsov A.A.

Lazarev V.G.

Latkin I.L.

Pchelin I.I.

Dates

2005-01-20—Published

2003-05-05—Filed