Method for decomposing wolframite and scheelite mixed ores in alkaline system

The invention discloses a method for decomposing wolframite and scheelite mixed ores in an alkaline system. The method specifically comprises the following steps that the wolframite and scheelite mixed ores are levigated, and then are added into a high-pressure kettle, a certain amount of water is proportioned and added, then sodium phosphate, sodium hydroxide and calcium fluoride are added for decomposition reaction, after solid-liquid separation is performed, a crude sodium tungstate solution is obtained. The method has the advantages that high-efficiency decomposition of the wolframite andscheelite mixed ores can be realized under the condition of low leaching agent consumption; and according to the method, the wolframite and scheelite mixed ores can be directly treated by utilizing existing tungsten smelting high-pressure kettle equipment, and the characteristics of low leaching cost, high decomposition rate and easiness in industrial application are achieved. 本发明公开了种碱性体系分解黑白钨混合矿的方法，具体为将黑白钨混合矿磨细后，加入到高压釜中，