本成果研究成功常温萃取—常温反萃取法制备高纯三氧化钨新工艺 ,是将黑钨精矿压煮得到钨酸钠溶液 ,经预处理后用活性有机试剂 (各种胺类 ) ,把其中有效成分钨提取出来 ,获得纯化与转型效果。所得纯净的钨溶液经蒸发结晶 ,便得到高纯的仲钨酸铵。此产品可作商品出口或内销 ,广? The results of the successful research at room temperature extraction - Room temperature strip extraction of high purity tungsten trioxide is a new process, the wolframite pressure boiled sodium tungstate solution, after pretreatment with active organic reagents (various amines), the Tungsten which is the active ingredient extracted to obtain the purification and transformation effect. The resulting pure tungsten solution is crystallized by evaporation to give high purity ammonium paratungstate. This product can be used for commodity exports or domestic sales, wide?