Calcining effect of synthetic iron oxide

Details Calcining effect of synthetic iron oxide Calcining effect of synthetic iron oxide

1979-03-23

1980-09-09

Vertiz, O. R.

Compositions: coating or plastic

Materials or ingredients

Miscellaneous

C09C 124

Patent

active

042216079

ABSTRACT:
Copperas solution is purified and mixed with a silica-containing material, such as fumed silica. The mixture is then dried to give a monohydrate (FeSO.sub.4.H.sub.2 O)/silica material. Calcination of this substance results in a copperas red oxide having improved color characteristics and lower losses due to uncalcined sulfate. The amount of silica added is 0.25-10 wt. %, based on the finished oxide product.

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