METHOD FOR PROCESSING PRECIPITATES OBTAINED ON NEUTRALIZING WASTE WATER FROM CHROME MANUFACTURES Russian patent published in 1997 - IPC

Abstract RU 2092459 C1

FIELD: waste disposal. SUBSTANCE: precipitate is mixed with saturated solution of chromic anhydride in proportion of solid part of precipitate to chromic anhydride being no more than 0.4 followed by calcination at 100-150 C for at least 6 h and at 600-1000 C for at least 2 h. EFFECT: abrasive chromium material obtained. 1 tbl

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RU 2 092 459 C1

Authors

Glazyrina L.N.

Fedorova N.V.

Desjatnik V.N.

Popov B.A.

Doronin S.I.

Dates

1997-10-10—Published

1995-06-16—Filed