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-hearth furnaces with mechanical raking. 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 reduced 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.

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