含砷金矿蜈蚣草除砷应用前景探讨-中国选矿选煤网.doc

含砷金矿蜈蚣草除砷应用前景探讨 王海娟，宁 平，唐兴进，张泽彪，肖青青(1.昆明理工大学环境科学与工程学院，云南 昆明650093；2.中国黄金集团贵州有限公司，贵州 贵阳550005；3.昆明理工大学材料与冶金工程学院，云南 昆明650093) 摘要：含砷金矿通常为难浸提金矿，因而选用经济、环保、有效的除砷预处理方法成为提高金回收提取效率的关键。综述了目前砷金矿预处理方法的优缺点和植物提取及砷转化的研究现状，结合超积累植物蜈蚣草在土壤砷污染植物修复方面的应用，提出了在砷金矿区种植砷超积累植物蜈蚣草来提取去除砷的设想，分析表明，植物预处理方法对于含砷较高的原矿、精矿，以及品位较低的合砷尾矿中的金回收具有广阔的应用前景。 关键词：砷金矿；植物提取；蜈蚣草；脱砷中图分类号：TD858 文献标识码：A文章编号2010)02-0094-05 Arsenic Removal from Arsenic-Containing Gold Ore by Using Pteris Vittata L. and Its Application Prospect Wang Haijuan1, Ning Ping1, Tang Xinjin2, Zhang Zebiao3, Xiao Qingqing1 (1.School of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, China; 2.Guizhou Branch of China National Gold Group Corporation, Guiyang, Guizhou 550005, China; 3.Materialsand Metallurgical Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, China) Abstract: Leaching of gold from arsenic-containing gold ore is usually difficult, so pretreatment of arsenic-containing gold ore to remove arsenic is necessary to increase the leaching rate of gold. This paper reviews the advantages and disadvantages of existing pretreatment techniques of removing arsenic from arsenic-containing gold ore, the present situation of research on phytoextraction of arsenic and arsenic transformation in environment, and the application of hyper-accumulator pteris vittata L. in phytoremediation of arsenic-polluted soil. The authors advanced an idea to plant hyper - accumulator pteris vittata L. in arsenic-containing gold mine area so as to remove arsenic. The analysis showed that phyto-pretreatment technique has a certain prospect to improve the recovery of gold from high arsenic-containing gold ore, gold concentrate and gold railings with low grade. Keywords: Arsenic-containing gold ore, Phytoextraction, Pteris vittata L., Arsenic removal 黄金矿产资源是黄金储备资源的主要组成部2／3。 砷与金相似的地球化学特性注定了它们常共存 l 含砷难处理金矿的预处理研究现状及分析 所谓难处理金矿，一般指那些不经过预处理，金80％的金矿石。据统计，有5％2000