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2 082 671

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Application

94032572/25, 1994-09-08

(22)

Actual filing date

1994-09-08

(45)

Published

1997-06-27

(72)

Inventor

Arkhipova V.M.Goizman V.P.Kotova N.A.Balandin O.N.Alekseev V.P.Alekhin A.M.Gurskij A.A.Chebekov S.A.Grinchenko V.G.

(73)

Holder

Aktsionernoe Obshchestvo Otkrytogo Tipa

METHOD FOR PRODUCTION OF SODIUM TETRABORATE Russian patent published in 1997 - IPC

Abstract RU 2082671 C1

FIELD: processing of boron silicate raw materials. SUBSTANCE: boron silicate raw materials are calcined and decomposed at pH 10.6-11.6. Insoluble residue is separated of solution and thus prepared hot solution is affected by carbonization to pH 10.0-8.0 to isolate commercial sodium boron silicate. The latter product comprises 80-40 mass % of SiO2, 5-20 mass % of B2O3, 2-20 mass % of Na2O and H2O. Then said solution is cooled and is fed for further crystallization. EFFECT: decreased waste of raw materials, improved efficiency. 3 tbl

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RU 2 082 671 C1

Authors

Arkhipova V.M.

Goizman V.P.

Kotova N.A.

Balandin O.N.

Alekseev V.P.

Alekhin A.M.

Gurskij A.A.

Chebekov S.A.

Grinchenko V.G.

Dates

1997-06-27—Published

1994-09-08—Filed

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