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[Ferro-alloys.com]According to the investigation of www.ferro-alloys.com, selenium-less technology is one of the most popular technologies in EMM industry at present. Selenium-less technology replaces highly toxic selenium dioxide with low-cost and non-toxic selenium-less additive. Therefore, there will no longer be much selenium element left in wastewater and manganese slag. This craft could replace SeO2 additive but it consumes more power.  For one mt of manganese metal, 7500-7800 KWH/t of direct current will be used up, 1000-1500 kwh/t higher than conventional craft. This technology has been used in some large EMM enterprises including Guangxi Xin-Manganese Group Co.，Ltd..

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• [Editor:Mike.zhang]