摘要
某大型黑白钨矿含0.44%WO3,WO3在白钨矿、黑钨矿和钨华中分布率分别为65.61%、29.41%和4.98%,采用先浮选白钨矿,其尾矿回收黑钨矿的选矿方法。因为白钨浮选尾矿品位低,所以直接浮选黑钨矿难度较大。为了提高黑钨浮选入选品位,经试验研究,采用高梯度磁选机,经一次粗选、一次扫选、强磁选,可获得较好的黑钨强磁精矿选别指标。小型试验指标:对含0.235%WO3的强磁给矿,获得黑钨强磁精矿品位0.47%WO3,钨回收率90.64%。工业试验指标:对含0.20%WO3的强磁给矿,获得黑钨强磁精矿品位0.43%WO3,钨回收率73.26%。
A large scheelite and wolfmirate ore contained 0.44MWO3 and the distribution rates of WO3 in fine tungsten sediments such as scheelite, wolfmirate and tungstite are 65.61%. 29.41 % and 4.98 % respectively. The principle flowsheet consists of the scheelite flotation and the tailings are treated to recover wolfmirate. Due to the low grade of the scheelite flotation tailings, it is hard to gain wolfmirate in floation directly. In order to increase the grade of the wolfmirate flotation feed, high-gradient magnetic separator is used to treat the tailings . After one roughing and one scavenging high intensity magnetic separation , the concentrate can have a better grade. Laboratory test results： when the magnetic separation feed contains 0, 235%WO3, the wolfmirate magnetic separation concentrate grade is 0.47 %WO3 and the reovery is 90. 64 % industrial test results： when the magnetic separation feed contains 0.20 % WO3, the wolfmirate magnetic separation concentrate grade is 0.43 %WO3 and the recovery is 73.26%.
出处
《中国矿业》
北大核心
2010年第4期64-67,共4页
China Mining Magazine
基金
国家"十一五"科技支撑计划课题"复杂低品位钨钼铋萤石多金属选矿工艺研究"(研究编号:2006BAB02B05-02-01B)
关键词
黑钨矿
高梯度磁选机
磁选
wolframite
high-- gradient magnetic separator
magnetic separation
