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研究了用纯碱焙烧-浸出法处理白钨矿精矿。把碳酸钠掺入浸出剂,从而成功地消除了浸出时白钨矿从钨酸钠溶液中返沉。把浸出残渣经简单粒度分离,使粗粒级(+37μm)返回使用,可进一步提高钨的回收率。
The stencil roasting and leaching method was used to treat scheelite concentrate. The incorporation of sodium carbonate into the leaching agent succeeded in eliminating scheelite from the sodium tungstate solution upon leaching. The leaching residue by simple particle size separation, the coarse level (+ 37μm) back to use, can further improve the recovery of tungsten.