Affordable Access

Publisher Website

The reduction of cobalt from its aqueous ammine ammonium sulphate system using hydrogen under pressure

Authors
Journal
Hydrometallurgy
0304-386X
Publisher
Elsevier
Publication Date
Volume
4
Issue
4
Identifiers
DOI: 10.1016/0304-386x(79)90033-1

Abstract

Abstract Cobalt ammine sulphate solutions are reduced by gaseous hydrogen at elevated temperatures and pressures to metallic cobalt powder. The reduction is a catalytic reaction. In the refinery, the cobalt is produced in a cycle comprising a nucleation reduction with a suitable catalyst and densification reductions in which the produced cobalt powder is used as a catalyst. The kinetics of the nucleation and of the densification reductions were studied as a function of catalyst concentration, reduction conditions and solution compositions. The physical properties of the cobalt powder are controlled by the reduction procedure and addition of surface active agents.

There are no comments yet on this publication. Be the first to share your thoughts.