Comprehensive recovery of gold and base-metal sulfide minerals from a low-grade refractory ore

作者：Li, Wen-juan; Liu, Shuang; Song, Yong-sheng^*; Wen, Jian-kang; Zhou, Gui-ying; Chen, Yong

来源：International Journal of Minerals,Metallurgy and Materials, 2016, 23(12): 1377-1386.

DOI：10.1007/s12613-016-1361-6

• comprehensive recovery
• gold
• sulfide minerals
• mineralogy
• refractory ore treatment

The comprehensive recovery of small amounts of valuable minerals such as gold and base-metal sulfide minerals from a low-grade refractory ore was investigated. The following treatment strategy was applied to a sample of this ore: gold flotation-gold concentrate leaching-lead and zinc flotation from the gold concentrate leaching residue. Closed-circuit trials of gold flotation yielded a gold concentrate that assayed at 40.23 g center dot t(-1) Au with a recovery of 86.25%. The gold concentrate leaching rate was 98.76%. Two variants of lead-zinc flotation from the residue-preferential flotation of lead and zinc and bulk flotation of lead and zinc-were tested using the middling processing method. Foam from the reflotation was returned to the lead rougher flotation or lead-zinc bulk flotation, whereas middlings from reflotation were discarded. Sulfur concentrate was a byproduct. The combined strategy of flotation, leaching, and flotation is recommended for the treatment of this kind of ore.

• 出版日期2016-12
• 单位中国矿业大学（北京）; 北京有色金属研究总院