云南某金矿选矿工艺试验研究
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摘要
云南某金矿石英脉型金矿石金品位3. 05 g/t,含硫1. 21%、铁2. 96%,主要金属矿物为黄铁矿,金以微细粒嵌布为主。针对矿石性质,进行了选矿工艺试验研究。结果表明:采用阶段磨矿+分级+浮选工艺流程,在一段磨矿细度-0. 074 mm占80%,再磨细度-0. 043 mm占80%,以及采用组合捕收剂MA-3+丁铵黑药的最佳药剂制度下,获得了金品位47. 60 g/t、金回收率88. 64%的总金精矿,总尾矿金品位0. 37 g/t,实现了金矿资源的高效利用。
The quartz vein type gold ore from a gold mine in Yunnan contains 3. 05 g/t gold,1. 21 % sulfur,and 2. 96 % iron. The main metal mineral is pyrite and gold is embedded in micro-fine grains. Based on the ore property,experimental research of mineral processing process was carried out. The results showed that when the grinding fineness was 80 %-0. 074 mm,the regrinding fineness was 80 %-0. 043 mm and the MA-3 + ammonium dibutyl dithiophosphate was the combined collector for the stage grinding + grading + flotation flowsheet,the total gold concentrate with gold grade 47. 60 g/t and gold recovery rate 88. 64 % was obtained and the gold grade in total tailings is 0. 37 g/t,achieving efficient utilization of gold resources.
The quartz vein type gold ore from a gold mine in Yunnan contains 3. 05 g/t gold,1. 21 % sulfur,and 2. 96 % iron. The main metal mineral is pyrite and gold is embedded in micro-fine grains. Based on the ore property,experimental research of mineral processing process was carried out. The results showed that when the grinding fineness was 80 %-0. 074 mm,the regrinding fineness was 80 %-0. 043 mm and the MA-3 + ammonium dibutyl dithiophosphate was the combined collector for the stage grinding + grading + flotation flowsheet,the total gold concentrate with gold grade 47. 60 g/t and gold recovery rate 88. 64 % was obtained and the gold grade in total tailings is 0. 37 g/t,achieving efficient utilization of gold resources.
引文
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[2]邵晓东,李景春.中国金矿床主要工业类型及其分布特征[J].贵金属地质,2000,9(3):166-169.
[3]武俊杰,孙阳,李青翠,等.新疆托里金矿工艺矿物学研究[J].有色金属(选矿部分),2015(6):1-4.
[4]吴双桥.四川甘孜某金矿石选矿试验研究[J].有色金属(选矿部分),2015(5):30-33.
[5]陈水波,谢洪珍,赖伟强,等.新疆某金矿重选-氰化联合工艺应用研究[J].黄金科学技术,2014,22(6):87-90.
[6]刘磊,吕良,岳铁兵,等.青海某金矿选矿试验研究[J].矿山机械,2016,44(2):72-75.
[7]龚明光.泡沫浮选[M].北京:冶金工业出版社,2007.
[8]潘炳,王奉刚,张蕴灵,等.提高青海某铁金矿金浮选回收率的研究与实践[J].矿冶工程,2014(3):33-36.
[9]刘江,胡秀明,丁振煊,等.林家三道沟金矿最佳磨矿细度与选矿指标的关系研究[J].有色矿冶,2017,33(3):31-34.
[10]查辉.表面活性剂与改性脂肪酸协同浮选高铁磷矿的研究[D].武汉:武汉理工大学,2014.
[11]谢广元.选矿学[M].北京:中国矿业大学出版社,2002.
[12]杜世勇.金矿浮选药剂的应用进展[J].矿冶,2010,19(3):34-39.