一、前言传统的苛性钠搅拌浸出法为国内外处理黑钨精矿的通用方法,具有工艺简单、分解率高等优点。但该法只适宜于处理含钙较低的黑钨精矿(通常含 Ca<1%),当精矿含 Ca>1%时,则分解率大大降低。如某厂处理含 Ca>2%的黑钨精矿时,渣含 WO_3高达10%以上,本厂处理含 Ca2%～3%的黑钨精矿时,采用两段浸出技术,浸出效果有所改善,但渣 I. Preface The traditional caustic soda agitation and leaching method is a common method for treating wolframite concentrate both at home and abroad. It has the advantages of simple process and high decomposition rate. However, the method is only suitable for the treatment of low wolframite with low calcium content (usually containing Ca <1%). When the concentrate contains Ca> 1%, the decomposition rate is greatly reduced. Such as a plant dealing with wolframite with Ca> 2%, the slag containing WO_3 up to 10%, the factory processing containing Ca2% ~ 3% wolframite, the use of two leaching techniques, the leaching effect of some Improve, but slag