Category Archives: tungsten

Tungsten is found in the form of tungstate , the chief ores being Wolframite (FeWO4 and MnPO4) , schelite( CaWO4) and stolzite ( PbWO4) . The small amounts of MoS2 in the ores are concentrated by the foam floatation process . This is converted to WO3 . It is reduced to metal with hydrogen, reductionContinue reading “In the extraction of tungsten metal, WO3 is reduced with hydrogen gas . Why is it not advisable to use carbon for the reduction?”