有色金属
有色金屬
유색금속
NONFERROUS METALS
2007年
4期
131-136
,共6页
选矿工程%磨矿介质%硫化矿%浮选
選礦工程%磨礦介質%硫化礦%浮選
선광공정%마광개질%류화광%부선
mineral processing%complex sulphide ore%milling%flotation
为提高效果,用三种磨机(普通钢磨机,不锈钢磨机和瓷磨机)研究某铅锌矿小型试验的浮选行为.结果表明,瓷磨机(即非铁质磨机)的氧化性磨矿环境可提高铅回收率,但由于矿石氧化产生的铜离子对闪锌矿的活化而降低了浮选选择性.相反地,传统铁质磨机磨矿则导致铅收率下降,而选择性提高.铁质磨机磨矿时铅收率降低可能是由铁氧化产物在矿物表面覆盖而造成的.粗粒更易受这种抑制的影响.
為提高效果,用三種磨機(普通鋼磨機,不鏽鋼磨機和瓷磨機)研究某鉛鋅礦小型試驗的浮選行為.結果錶明,瓷磨機(即非鐵質磨機)的氧化性磨礦環境可提高鉛迴收率,但由于礦石氧化產生的銅離子對閃鋅礦的活化而降低瞭浮選選擇性.相反地,傳統鐵質磨機磨礦則導緻鉛收率下降,而選擇性提高.鐵質磨機磨礦時鉛收率降低可能是由鐵氧化產物在礦物錶麵覆蓋而造成的.粗粒更易受這種抑製的影響.
위제고효과,용삼충마궤(보통강마궤,불수강마궤화자마궤)연구모연자광소형시험적부선행위.결과표명,자마궤(즉비철질마궤)적양화성마광배경가제고연회수솔,단유우광석양화산생적동리자대섬자광적활화이강저료부선선택성.상반지,전통철질마궤마광칙도치연수솔하강,이선택성제고.철질마궤마광시연수솔강저가능시유철양화산물재광물표면복개이조성적.조립경역수저충억제적영향.
The flotation performances of a complex Pb/zn ore are investigated by three kinds of mill(steel,stainless and ceramic mill)in laboratory batch flotation testa.It is found that the lead recovery is increased while grinding in a ceramic mill,i.e.a non-ferrous,oxidizing environment.but the selectivity is decreased due to the activation ol sphalerite by copper ions produced via the oxidation of ore.On the contrary,the lead recovery is decreased while grinding in a traditionel iron mill,but the selectivity is increased.The low recovery with iron grinding media is probably caused by the coating of iron oxy-hydroxides on sulphide surfaces.Coarse particles are more sensitive to this kind of depression.
