Preparation of pigment grade chromium oxide

Details Preparation of pigment grade chromium oxide Preparation of pigment grade chromium oxide

C - Chemistry, Metallurgy

01

G

6/194, 23/233

C01G 37/02 (2006.01) C09C 1/34 (2006.01)

Patent

CA 1209321

PREPARATION OF PIGMENT GRADE CHROMIUM OXIDE Abstract A process for the preparation of pigment grade chromium oxide comprising calcining non- pigment grade chromium oxide in the presence of at least about 1.0 weight percent sodium sulfate, washing the calcined mixture to remove the sodium sulfate and recovering the pigment grade oxide thus produced.

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