Leaching The Resultant Mass With Water to Dissolve Sodium Molybdate Therefrom
【China Molybdenum Industry News Network】
Sufficient to ensure chemical reaction; leaching the resultant mass with water to dissolve sodium molybdate therefrom, filtering off the impure solution of sodium molybdate; neutralizing said solution and adding thereto a quantity of magnesium chloride sufficient to precipitate magnesium phosphate and arsenate; filtering off the purified sodium molybdate solution; and adding calcium chloride to said solution to precipitate therefrom substantially pure calcium molybdate.
Process for extracting molybdenum from wulfenite ore which comprises comminuting and roasting the ore; mixing said roasted ore with a quantity of sodium hydroxide sufficient to combine with substantially all of the molybdenum contained in the ore to form sodium molybdate; heating said mixture to a temperature sufficient to ensure chemical reaction; leaching the resultant mass with water to dissolve sodium molybdate therefrom; filtering off the impure solution of sodium molybdate; neutralizing said solution and adding thereto a quantity of magnesium chloride sufficient to precipitate magnesium phosphate and arsenate; filtering off the purified sodium molybdate solution; and adding ferric chloride to said solution to precipitate therefrom substantially pure ferric molybate.
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