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2 081 078

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IPC

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Application

95116032/03, 1995-09-13

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Actual filing date

1995-09-13

(45)

Published

1997-06-10

(72)

Inventor

Gashkova V.I.Trojan N.V.Vorotnikov A.V.Levitan B.V.Desjatnik V.N.Roziznanyj I.F.Borodina V.V.Tolkacheva L.E.Malkov M.M.Vorotnikova Eh.V.

(73)

Holder

Aktsionernoe Obshchestvo Otkrytogo Tipa Kriolitovyj Zavod"

METHOD FOR PRODUCTION OF GYPSUM BINDER Russian patent published in 1997 - IPC

Abstract RU 2081078 C1

FIELD: building materials production. SUBSTANCE: production of gypsum binder using acid waste of production of hydrogen fluoride involves neutralization of said waste and granulation thus obtained neutralization product. Said neutralization is carried out simultaneously with grinding till content of free sulfuric acid in neutralization product is 0.3-1.0 mass %. Quantity of neutralizing agent is more than stoichiometric one by 28-73 mass %. Said granulation is carried out with the help of water, its quantity is 12-17 mass % of product mass to be granulated. EFFECT: increased initial strength of granules, decreased acidity of granules, increased yield of commercial fraction of granules. 1 tbl

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RU 2 081 078 C1

Authors

Gashkova V.I.

Trojan N.V.

Vorotnikov A.V.

Levitan B.V.

Desjatnik V.N.

Roziznanyj I.F.

Borodina V.V.

Tolkacheva L.E.

Malkov M.M.

Vorotnikova Eh.V.

Dates

1997-06-10—Published

1995-09-13—Filed