Ni-smectitic ore behaviour during the Caron process ...
Jun 01, 2019· The increase of the temperature above 550 °C, during the reduction roasting stage, transformed clay minerals (mainly smectites) and goethite into talc, olivines, pyroxenes, amphiboles, spinels and hematite (Fig. 3, Fig. 4); however, samples ASL-I5, AS-ANi3, ASL-AN3 and VSL-R2, already contained spinels and pyroxenes before the reduction roasting step.