Kinetics of cobalt sulfate dissociation and its interaction with iron sulfide
Abstract
The dissociation of cobalt sulfate and its interaction with iron sulfide are important for understanding the process of sulfatizing roasting of cobalt-bearing pyrite concentrates. The dissociation of cobalt sulfate in a nitrogen atmosphere in a fixed bed begins at 730° C, in an atmosphere of air and oxygen, respectively, 15 and 30° C higher. According to A. V. Vanyukov, the beginning of thermal decomposition is observed at 692 and at 720-770 ° C, is active. According to other data, the decomposition of cobalt sulfate at 2-3-hour heating in a current of air comes already at 600 ° C. Information on the kinetics of dissociation of cobalt sulfate in the fluidized bed in the literature is absent.
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