关键词: 白钨矿, 碱法浸出, 酸法浸出

Abstract: Mainly current scheelite leaching processes be introduced，especially including alkaline leaching process based on generating insoluble calcium salt，acid leaching process based on generating soluble calcium salt，and other leaching processes.Alkaline leaching process is characterized by short flow，simple equipment，high leaching rate and strong adaptability to raw materials.However，alkaline leaching process is generally of high energy consumption and high cost.Meanwhile，it is carried out in the case of excessive amount of agent，which will bring some difficulties to subsequent processes.Acid leaching process，mainly used to deal with high quality scheelite with high grade and low impurities，has poor adaptability to raw materials and strict requirement for impurities in raw materials.The characteristic of acid leaching process is mainly high thermodynamics reaction trend，but can produce tungsten acid membrane in the decompositionprocess，thus affect decomposition effect of scheelite.In addition,it will lead to high corrosion of equipment and serious pollutionofenvironment.Other leaching processes are improved based on alkaline and acid leaching processes，but most of them are difficult to industrialize.Therefore，based on the disadvantages of scheelite decomposition processes,it is urgent to develop new process technologies of scheelite resource with low energy consumption，simple operation，economy and cleanliness，in order to realize sustainable development of tungsten industry resource in China.

Key words: Scheelite, Alkaline leaching, Acid leaching