Kinetics of cobalt sulfate dissociation and its interaction with iron sulfide
Authors:
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, and proceeds actively. According to other data, the decomposition of cobalt sulfate at 2‑3 hour heating in a current of air occurs already at 600 °C. Information on the kinetics of dissociation of cobalt sulfate in the fluidized bed in the literature is absent.
Область исследования:
(Archived) Metallurgy and concentration
Funding:
None
References
- Agracheva R. A. Equilibrium of reactions of interaction of copper and cobalt sulfates with sulfur iron. V sb. nauch. tr. Mosk. in-ta tsvetnykh metallov i zolota, No. 15, 1955.
- Bumazhnov F. T. Sulfatizing roasting of pyrite concentrate. Zapiski Gornogo Instituta, vol. XLIII, iss. 3, 1963.
- Erofeev V. V. Successes in the field of topokinetics. Izv. Belorus. AN, No. 4, 1950.
- Latimer V. Oxidizing states of elements and their potentials in aqueous solutions. IL, 1954.
- Malets A. M. Kinetics of combustion of single-sulfur iron in a fluidized bed. Khim. nauka i prom., 2, No. 1, 1957.
- Perelman F. I., Zvorykin A. Ya., Gudima N. V. Cobalt. Izd-vo AN SSSR, 1949.
- Meunier F., Meunier L., Vanderpoorten H. Conte rendu XXVIII Congres de chim. industrielle. Bruxelles, 1954.
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