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Processing is carried out by leaching the specified work material in sulfuric medium in the presence of pig-iron as deoxidizing agent, which is calculated in superfluous amount in respect to manganese (IV), thus, leaching is carried out in two stages, where at the first stage the leaching of the part of the work material is effected on the appropriate steriometric amount of pig-iron, and at the second stage the remained amount of work material is added to the received suspension, then leaching is continued at temperature of 160-1700С during 90-120min.
GEAU20050091372005-12-262005-12-26Method for processing of low-grade ores or production wastes containing magnesium dioxide
GEU20071322Y
(en)