摘要
赣南某深部浸染型白钨矿原矿品位低,嵌布粒度较细,矿物种类多且组成复杂,属于难选矿石.白钨因其良好的可浮性常用浮选的方法进行回收,白钨浮选依据浮选作业条件又可分为加温浮选与常温浮选,加温浮选虽然具有对矿石的适应性强,浮选指标稳定等优点,但需提供加温设备,选矿成本较一般工艺高,其应用也受到了限制.本试验采用白钨常温浮选的方法,在确定了最佳的碳酸钠用量、水玻璃模数和水玻璃用量的基础上,探究了白钨精选试验,确定了最佳的精选条件,在保证回收率的同时进一步提高了精矿指标.实验室小型闭路试验通过一粗二扫五精(其中包括一次空白精选)的浮选工艺流程,在原矿品位仅为0.22%的情况下,获得了WO3品位为69.84%、回收率为70.76%的白钨精矿.
A low-grade skarn-type scheelite in Southern Jiangxi belongs to the refractory ore for the complex composition and fine dissemination size. Flotation, including heating flotation and room temperature flotation, is often applied for scheelite processing for its favorable flotability. Heating flotation has advantages of good ore adaptability, favorable flotation indexes, and stable characteristics. However, its cost is relative higher for heating requirement. Thus its appliction is restricted. Scheelite processing experiments have been performed based on determining the optimal sodium dosage, water glass dosage and modulus by applying scheelite flotation at room temperature. The concentrate indexes have been improved while maintaining recovery rate. When the ore grade is only 0.22 %, through a roughing, two scavengings and five finishings （including a blank selection） of flotation process, the concentrate grate of WO 3 is 69.84 % and the recovery rate is 70.76 % in closed circuit test .
出处
《有色金属科学与工程》
CAS
2013年第5期97-101,共5页
Nonferrous Metals Science and Engineering
关键词
低品位钨矿
白钨矿
常温浮选
low-grade wolfram
scheelite
floatation process at room temperature
