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2 188 156

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IPC

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Application

2001113013/12, 2001-05-16

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Start date

2001-05-16

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Actual filing date

2001-05-16

(45)

Published

2002-08-27

(72)

Inventor

Abramov O.B.Volosnev A.V.Dedov A.S.Loginov N.D.Rodin V.I.Sezemin V.A.Seredenko V.A.Chernenko Ju.D.Shatalov V.V.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Khimicheskij Kombinat Im. B.P.Konstantinova"

CALCIUM FLUORIDE PRODUCTION PROCESS Russian patent published in 2002 - IPC

Abstract RU 2188156 C1

FIELD: inorganic compounds technology. SUBSTANCE: silicohydrofluoric acid is brought into interaction with calcium carbonate suspension to form calcium fluoride pulp, from which silicic acid is then separated. Calcium carbonate suspension utilized is nitrate-phosphate fertilizer production waste containing nitrogen admixture, and process is carried out until 2-3% silicic acid (calculated as SiO₂) sol is formed in liquid phase of calcium fluoride pulp. Suspension can also be supplemented by polyacrylamide in quantities 0.01-0.02% based on the weight of solid phase contained in pulp. EFFECT: reduced expenses on starting materials. 2 cl, 3 ex

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RU 2 188 156 C1

Authors

Abramov O.B.

Volosnev A.V.

Dedov A.S.

Loginov N.D.

Rodin V.I.

Sezemin V.A.

Seredenko V.A.

Chernenko Ju.D.

Shatalov V.V.

Dates

2002-08-27—Published

2001-05-16—Filed