不同磨矿介质对金川铜镍矿浮选的影响研究

Different grinding media on flotation behavior of Jinchuan Cu-Ni ore

以金川硫化铜镍矿石为研究对象,通过浮选试验研究了不锈钢球、锆球、铸铁球三种介质磨矿时硫化铜镍矿石的浮选行为。结果表明,锆球磨矿可获得最高的回收率,铸铁球磨矿时脉石上浮量大。使用AFM、ICP等研究了磨矿产品表面形貌、电化学性质等的差异,结果表明,锆球磨矿时颗粒表面较为平整,矿浆电位较高,铸铁球磨矿时,颗粒表面较为粗糙,矿浆中检出较多铁离子,矿浆电位较低,这些差别导致了矿石浮选行为的差异。

Taking Jinchuan copper nickel sulphide ore as the research object,the flotation behavior of copper nickel sulphide ore during grinding with stainless steel ball,zirconium ball and cast iron ball was studied through flotation test.The results show that the highest recovery rate can be obtained by using zirconium ball grinding,while more gangue floats when grinding with cast iron ball.AFM and ICP were used to study the differences of grinding products in surface morphology,electrochemical properties,etc.The results showed that the particle surface was relatively flat during zirconium ball milling,the pulp potential was high,while the particle surface was relatively rough during cast iron ball milling,more iron ions were detected in the pulp,and the pulp potential was low.These differences led to the differences in ore flotation behavior.