摘要
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。
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 tests. 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 of sphalerite by copper ions produced via the oxidation of ore. On the contrary, the lead recovery is decreased while grinding in a traditional 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.
出处
《有色金属》
CSCD
北大核心
2007年第4期131-136,共6页
Nonferrous Metals
关键词
选矿工程
磨矿介质
硫化矿
浮选
mineral processing
complex sulphide ore
milling flotation
作者简介
魏以和（1962-），男，湖北广水县人，博士生．
联系人：周高云（1963-），男，湖南祁东县人，教授，主要从事选矿工艺和选矿药剂等方面的研究。
