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2 101 105

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C1

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IPC

(21) (22)

Application

96103904/12, 1996-02-27

(22)

Actual filing date

1996-02-27

(45)

Published

1998-01-10

(72)

Inventor

Sarychev V.F.Prjadkina V.M.Akhmetzjanov F.M.Nosov S.K.

(73)

Holder

Aktsionernoe Obshchestvo Metallurgicheskij Kombinat"

METHOD OF REMOVING CARBONATE DEPOSITS FROM PIPELINES OF RECYCLING WATER-SUPPLY SYSTEMS Russian patent published in 1998 - IPC

Abstract RU 2101105 C1

FIELD: water-supply systems. SUBSTANCE: inside surface of large-diameter metal pipelines is cleaned with cleaning solution prepared by adding concentrated commercial sulfuric acid to water recycling in pipeline when conveyed into metallurgical processes. Addition is performed using small portions of acid in quantities 20 to 55 g per 1 cu.m of water to attain pH value in supplied water 7.2-7.4 and that in exhausted water 7.4-7.7. EFFECT: facilitated cleaning operation. 1 tbl

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RU 2 101 105 C1

Authors

Sarychev V.F.

Prjadkina V.M.

Akhmetzjanov F.M.

Nosov S.K.

Dates

1998-01-10—Published

1996-02-27—Filed

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