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Application

93055736/02, 1993-12-14

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Actual filing date

1993-12-14

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Published

1996-07-27

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Inventor

Rustambekov M.K.Bezljudova L.I.Pivovarova L.N.Gorelova G.K.Titova O.I.Blinova M.B.Novikova O.S.

(73)

Holder

Gosudarstvennyj Nauchno-Issledovatel'Skij I Proektnyj Institut Azotnoj Promyshlennosti I Produktov Organicheskogo Sinteza

METHOD FOR NEUTRALIZATION OF WASTE ETCHING NITROGEN-FLUORIDE SOLUTIONS Russian patent published in 1996 - IPC

Abstract RU 2064528 C1

FIELD: chemical purification of industrial wastes. SUBSTANCE: method is carried out by two-stepped treatment. The first step takes place by conversion of chalk which contains calcium carbonate. The process is carried out at excess amount of said chalk till pH is 5. The second step takes place with the help of alkali component to pH 6-8. Thus obtained precipitate is then separated. EFFECT: improves efficiency of the method. 1 tbl

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RU 2 064 528 C1

Authors

Rustambekov M.K.

Bezljudova L.I.

Pivovarova L.N.

Gorelova G.K.

Titova O.I.

Blinova M.B.

Novikova O.S.

Dates

1996-07-27—Published

1993-12-14—Filed

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