Conclusions
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1.
The calcining of a mixture of magnesium, manganese, and iron sulfates at temperatures of up to 420°C results in their full dehydration.
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2.
Intense decomposition of these sulfates is observed in the temperature range 620–750°C.
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3.
Full decomposition of such a salt mixture is attained at 1050°C, i.e., a temperature 100°C lower than the decomposition temperature of the most stable of the compounds investigated, magnesium sulfate.
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4.
The salt decomposition process is accompanied by a ferrite formation process, which predominates at temperature above 800°C.
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5.
The optimum ferritization temperature for such a salt mixture may be taken to be 1100°C.
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Translated from Poroshkovaya Metallurgiya, No. 7(163), pp. 74–78, July, 1976.
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Gorbatyuk, V.A., Prikhod'ko, L.I., Khaskin, L.I. et al. Formation of 2VT ferrite during the calcining of a sulfate mixture. Powder Metall Met Ceram 15, 556–559 (1976). https://doi.org/10.1007/BF00810501
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DOI: https://doi.org/10.1007/BF00810501