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[Ferro-alloys.com]One of the major purposes of EMM was to produce Mn3O4. In traditional craft, manganese ore was smelted into EMM (manganese flake), and then manganese flake was made into Mn3O4. This old craft took too much energy and overall cost was high.

Some metallurgical enterprise of Shanghai disclosed recently that it had successfully developed a new production craft of Mn3O4. In the new craft, manganese ore was used to produce Mn3O4 directly and electrolysis was omitted, so overall cost dropped significantly. This company promised its craft had been mature and it had gotten the patent. Proportion of Mn element could be as high as 71.5% and there was no selenium pollution. Annual Mn3O4 capacity of the company reached 8,000 mt.

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• [Editor:Mike.zhang]