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Application

99111379/12, 1999-05-28

(24)

Start date

1999-05-28

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Actual filing date

1999-05-28

(45)

Published

2000-07-10

(72)

Inventor

Kirchanov A.A.Kulikovskaja N.A.

(73)

Holder

Institut Kataliza Im. G.K. Boreskova So Ran

METHOD OF REUSING ELECTROPLATING SLUDGE Russian patent published in 2000 - IPC

Abstract RU 2152253 C1

FIELD: electroplating processes. SUBSTANCE: conversion of electroplating sludge into catalyst is preceded by treatment of crude material, preparation of molding paste, molding, and final heat treatment at 500-550 C. In particular, sludge containing 40-45% F2O3, 10-15% CuO, and 5-10% Cr2O3 is preliminarily activated at 120 to 550 C and further activated mechanochemically by grinding on ball mill to particle size 0.5 to 5 mcm. Paste is prepared with liquefied natural clay and then dried to moisture 26-28%. Molding is accomplished by extruding cutting-shaped or cellular-structure product that can be used as catalyst in the process of ammonia-mediated selective reduction of nitrogen oxides. EFFECT: efficiently used waste. 4 cl, 1 tbl, 4 ex

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RU 2 152 253 C1

Authors

Kirchanov A.A.

Kulikovskaja N.A.

Dates

2000-07-10—Published

1999-05-28—Filed

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