Effect of Grinding Conditions on the Flotation of Malachite and Calcite
As a kind of complex physicochemical process, grinding would affect the subsequent mineral processing such as flotation considerably. In this study, the effect of wet grinding on malachite and calcite flotation using sodium oleate as collector was studied. And the mechanism of the effect of grinding was investigated. Laboratory scale grinding and flotation testing of malachite and calcite samples were performed. Different grinding media were used, including steel balls and zirconia balls. It was the aim of this work to study the effect of grinding on the pulp chemistry paying particular attention to flotation recovery. The effect of grinding media and different addition location of sodium oleate on malachite and calcite flotation was studied. The methodology used in this project involved grinding the ore with and without the addition of sodium oleate in mill, measuring the pH and metal ions produced by minerals after grinding, adding various quantities of sodium oleate and determining the copper recovery. The presence of species of products on the minerals after grinding was probed using X-ray photoelectron spectroscopy (XPS), and the metal ions produced by minerals after grinding were measured by atomic absorption spectrometry (AAS). It is showed that the milling environments evaluated significantly affected the flotation of malachite and calcite. This study also discusses the effecting mechanism of grinding environment on floatability of malachite and calcite.
Malachite Calcite Grinding conditions Grinding media
Z.G. Song S.S. Lu C.Y. Sun
School of Resource and Civil Engineering, Northeastern University, Shenyang, Liaoning, China State K State Key Laboratory of Mineral Processing, Beijing General Research Institute of Mining and Metallu
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
1087-1092
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）