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pro vyhledávání: '"M. A. Messiha"'
Publikováno v:
Journal of Applied Chemistry. 14:105-108
A new method is described for the production of manganous sulphate from low-grade manganese ores. The ore is first treated with a calculated amount of concentrated sulphuric acid at 200–220° to form manganic and ferric sulphates, and then heated a