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Roasting Of Tungsten Ore

Roasting Of Tungsten Ore

US3800025A Recovery of tungsten from low grade tungsten. A method of extracting tungsten from ores containing low tungsten concentrations comprising the steps of roasting a particulated low grade tungstencontaining ore in the presence of the reagents Na2CO3 or Na3PO4 and NaCl followed thereafter by waterleaching and filtering

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