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(21) (22)

Application

4206298/02, 1987-03-06

(22)

Actual filing date

1987-03-06

(45)

Published

1996-05-10

(72)

Inventor

Lipin V.A.Tikhonov N.N.Rajzman V.L.Andreev E.I.Kovaleva L.N.Ul'Janova N.I.Sin'Kova L.V.

METHOD FOR PRODUCTION OF NORDSTRANDITE Russian patent published in 1996 - IPC

Abstract SU 1443329 A1

FIELD: chemical technology, particular, production of aluminium hydroxide in form of nordstrandite. SUBSTANCE: method for production of nordstrandite includes mixing of solution of aluminate of alkali metal in ratio Al₂O₃: SiO₂= 25-100 with gas-air mixture containing CO₂ at pH 11.0-11.3 with ratio of caustic and carbonate alkalis of 0.001-0.007 in mother liquor, sediment is separated, washed and dried. EFFECT: 3-4-fold acceleration of process as compared with the prototype, and 2-2.5-fold reduction of material losses. 2 cl, 1 tbl

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SU 1 443 329 A1

Authors

Lipin V.A.

Tikhonov N.N.

Rajzman V.L.

Andreev E.I.

Kovaleva L.N.

Ul'Janova N.I.

Sin'Kova L.V.

Dates

1996-05-10—Published

1987-03-06—Filed