Beneficiation and leaching study of a muti-Au carrier and low grade refractory gold ore

2017 2nd International Seminar on Advances in Materials Science and Engineering

Li, W.J.^1 ; Song, Y.S.^1 ; Chen, Y.^1 ; Cai, L.L.^1 ; Zhou, G.Y.^1

National Engineering Laboratory of Biohydrometallurgy, General Research Institute for Nonferrous Metals, Beijing

100088, China^1

关键词: Beneficiation plants;    Gold recoveries;    Mineral liberation;    Mineral liberation analysis;    Mineralogical characterization;    Phase analysis;    Processing method;    Refractory gold ore;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/231/1/012169/pdf
DOI  :  10.1088/1757-899X/231/1/012169

来源: IOP

【 摘 要 】

Detailed mineralogy and beneficiation and leaching study of a muti-Au carrier, low grade refractory gold ore from a beneficiation plant in Henan Province, China, was investigated. Mineral liberation analysis, scanning electron microscopy, element phase analysis and etc. by a mineral liberation analyser were used for mineralogical characterization study of this ore. The present work describes an experimental study on the effect of traditional parameters (such as grinding fineness and reagent regimes), middling processing method and flowsheet construction on the total recovery and the assay of the floatation concentrate. Two-step floatation and part of middling combined to the floatation tailing for gold leaching process resulted in high gold grade (g.t-1) and gold recovery (%) for this refractory gold ore. This process opens the possibilities of maximizing Au grade and recoveries in a muti-Au carrier and low grade refractory gold ore where low recoveries are common.