Mineral Processing Experiments on Fine-disseminated Gold Ore from Shaanxi Province
Received date: 2016-07-05
Revised date: 2016-10-10
Online published: 2017-01-22
Fine-disseminated type gold deposits are often rich in arsenic，mercury，antimony，carbon and other minerals difficult to deal with，fine grained gold is commonly used in sulfide minerals such as pyrite，belong to refractory ore.Gold mineral particle size is very small in a gold deposit in Shaanxi Province，mainly for sub-micro gold.It is difficult to obtain high grade gold concentrate by traditional flotation method，for the effective extraction of fine grained gold ore，technological mineralogy and mineral processing tests were carried out.Process mineralogy research shows the main gold bearing minerals are pyrite.Under the condition of -0.074 mm accounting for 60% of the fineness，the dissociation degree of pyrite was 93.48%.The form of natural gold is sub-micro gold and lattice gold，belonging to fine grain disseminated type refractory ore.Comprehensive comparison of mineral processing test shows that the gold mine is suitable for the process of “grinding-roasting-grinding-cyanide”，and under the condition of the ore grinding to -0.075 mm accounted for 80%，and then roast 2 h at 650 ℃，the calcined ore grinding to -0.075 mm accounted for 95%，NaCN dosage of 4 kg/t and cyanide time of 36 h， the gold leaching rate can reach 73.36%.The test scheme is suitable for the flotation of fine disseminated gold ores，mineral processing effect is more ideal.
TIAN Runqing , LIU Yunhua , TIAN Minmin , WEI Juzhen , TENG Fei , LI Huan , LI Xing . Mineral Processing Experiments on Fine-disseminated Gold Ore from Shaanxi Province[J]. Gold Science and Technology, 2016 , 24(6) : 102 -106 . DOI: 10.11872/j.issn.1005-2518.2016.06.102
［1］ 张立征，王彩霞，赵福财.甘肃某微细粒浸染型难处理金矿选矿试验研究［J］.矿冶工程，2011，31（4）：45-47.
［2］ 宋鑫.中国难处理金矿资源及其开发利用技术［J］.黄金，2009，30（7）：46-49.
［3］ 聂光华，刘春龙.微细粒金矿石选矿试验研究［J］.中国矿业，2006，15（11）：76-78.
［4］ 丁秘枣，牛洪联.金化学物相分析现状及浅析［J］.内蒙古石油化工，2010（4）：19-20.
［5］ 王学娟.贵州卡林型金矿选矿新技术研究［D］.昆明：昆明理工大学，2007.
［6］ 沈述保，唐明刚.含砷难处理金矿浮选研究进展［J］.黄金科学技术，2014，22（2）：63-66.
［7］ 刘波.从锑金精矿湿法提取锑和金的工艺研究［D］.长沙：中南大学，2014.
［8］ 高艳艳.甘孜某氧化金矿选矿工艺研究［D］.成都：成都理工大学，2014.
［9］ 吴卫国.大冶铁矿硫精矿提金试验研究［D］.武汉：武汉科技大学，2003.
［10］ 姚敬劬.矿石中金的赋存状态的分类鉴别及相互关系［J］.黄金，1985（3）：26-32.
［11］ 郭玉武，张宇，朱恩领，等.内蒙古某微细粒浸染型金矿选矿工艺研究［J］.有色金属（选矿部分），2015（4）：46-50.
［12］ 熊文良.某难选金矿提金试验研究［J］.矿产综合利用，2011（2）：19-21.
［13］ 裴洪明.微细粒浸染型原生金矿选矿试验［J］.黄金科学技术，2000，8（4）：45-47.
［14］ 王瑛.新汶矿煤中黄铁矿的粒度及嵌布特性［J］.选煤技术，1996（3）：18-21.
［15］ 薛光，任文生.我国金精矿焙烧—氰化浸出工艺的发展［J］.中国有色冶金，2007（3）：44-49.
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