Reduction of oxidized nickel ore in a fluidized bed

Abstract

At the nickel plant of the Republic of Cuba, at industrial and pilot plants in a number of countries, reduction roasting of oxidized nickel ore before ammonia leaching is carried out in multi-pod furnaces with mechanical overheating. The specific productivity of these furnaces is relatively low. Experience accumulated in non-ferrous metallurgy on fluidized bed roasting, as well as the results of studies of magnetizing fluidized bed roasting in ferrous metallurgy suggest that a similar process can be recovered oxidized nickel ore before ammonia leaching. The first exploratory experiments in this direction were carried out at a large laboratory installation at the Institute of Petroleum of the AS USSR.