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D0I:10.13374/i.issnl00113.2009.10.016 第31卷第10期 北京科技大学学报 Vol.31 No.10 2009年10月 Journal of University of Science and Technology Beijing 0t.2009 金精矿氰化尾渣铅和铜的回收 李正要汪莉于艳红魏鹏程 北京科技大学土木与环境工程学院,北京100083 摘要采用优先浮选铅、再活化浮选铜的工艺流程对某金精矿氰化尾渣铅、铜回收进行研究·闭路实验表明:石灰作抑制 剂,乙硫氮(二乙基二硫代氨基甲酸钠)和丁基黄药(丁基黄原酸钠)作捕收剂,通过“一粗两扫两精”流程,得到回收率为 90.48%、品位为45.24%的合格铅精矿:以NP(铜、锌无机盐组合药剂)作铜活化剂,有机抑制剂FM抑制黄铁矿,Z-200(0一 异丙基一一乙基硫逐氨基甲酸酯)和丁铵黑药(二丁基二硫代磷酸铵)作捕收剂,采用“一粗两扫两精”流程,得到回收率为 82.17%、品位为19.28%的合格铜精矿;金、银同时富集于铅精矿和铜精矿· 关键词氰化尾渣:优先浮选:铅回收:铜回收 分类号TD926.4 Recovery of lead and copper from cyanide tailings LI Zheng yao,WANG Li.YU Yan-hong.WEI Peng"cheng School of Civil and Environmental Engineering.University of Science and Technology Beijing.Beijing 100083.China ABSTRACI The flowsheet of the selective flotation of lead and the activation flotation of copper was adopted to recover lead and copper from cyanide tailings.Closed circuit test results show that the qualified lead concentrate with the recovery of 90.48%and the grade of 45.24%can be produced with lime as a stabilizer.sodium diethyl dithiocarbamate(N.N-diethyldithiocarbamate)and butylxanthate (butyl sodium xanthate)as combined collectors,and by using the flotation flowsheet of one roughing,two scavengings and two cleanings.The qualified copper concentrate with the recovery of 82.17%and the grade of 19.28%can be produced with NP (a combined reagent by inorganic copper salts and inorganic zinc salts)as an activator,organic depressant FM as a stabilizer,Z-200 (O-isopropyl-N-ethylthiocarbamate)and butyl ammonium aerofloat (ammonium dibutyl dithiophosphate)as combined collectors. and by using the flotation flowsheet of one roughing.two scavengings and two cleanings.Gold and silver are also simultaneously en- riched within the two kinds of concentrates KEY WORDS cyanide tailings:selective flotation:lead recovery:copper recovery 国内某金矿矿石主要含金、银和少量铜、铅,提 回收氰化尾渣中铅、铜的成功,对同类黄金矿山具有 金工艺为金精矿氰化浸出.随着矿山的不断开采, 借鉴意义, 氰化尾渣堆积量越来越多,不仅占用大量土地,而且 造成尾渣中铜、铅资源的浪费,国内已有部分矿山 1氰化尾渣性质 对氰化尾渣中的有价金属进行了综合回收],但 氰化尾渣的主要元素分析结果如表1所示. 多采用脱药、洗涤等预处理工艺,并产生大量难 处理的含氰废水;用硫酸活化铜1),会产生氢氰 表1氰化尾渣的主要元素分析结果(质量分数) Table I Results of elemental analysis on cyanide tailings 酸,危害环境。本文对该刊矿氰化尾渣进行系统研究, 采用不脱药、不洗涤以及无氢氰酸产生的工艺,得到 金/ 银/ 船 铜 铁硫 二氧化硅 含铅45.24%的合格铅精矿和含铜19.28%的合格 (gt-)(gt-) 铜精矿;金、银同时富集到铅精矿和铜精矿,该工艺 4.151.491.17 11426.1824.1927.24 收稿日期:2008-10-31 作者简介:李正要(1976一)男,博士,讲师,E-mail:zyli0213@sina-com金精矿氰化尾渣铅和铜的回收 李正要 汪 莉 于艳红 魏鹏程 北京科技大学土木与环境工程学院‚北京100083 摘 要 采用优先浮选铅、再活化浮选铜的工艺流程对某金精矿氰化尾渣铅、铜回收进行研究.闭路实验表明:石灰作抑制 剂‚乙硫氮(二乙基二硫代氨基甲酸钠)和丁基黄药(丁基黄原酸钠)作捕收剂‚通过“一粗两扫两精” 流程‚得到回收率为 90∙48%、品位为45∙24%的合格铅精矿;以 NP(铜、锌无机盐组合药剂)作铜活化剂‚有机抑制剂 F M 抑制黄铁矿‚Z-200( O- 异丙基-N-乙基硫逐氨基甲酸酯)和丁铵黑药(二丁基二硫代磷酸铵)作捕收剂‚采用“一粗两扫两精”流程‚得到回收率为 82∙17%、品位为19∙28%的合格铜精矿;金、银同时富集于铅精矿和铜精矿. 关键词 氰化尾渣;优先浮选;铅回收;铜回收 分类号 TD926∙4 Recovery of lead and copper from cyanide tailings LI Zheng-yao‚W A NG Li‚Y U Y an-hong‚W EI Peng-cheng School of Civil and Environmental Engineering‚University of Science and Technology Beijing‚Beijing100083‚China ABSTRACT T he flowsheet of the selective flotation of lead and the activation flotation of copper was adopted to recover lead and copper from cyanide tailings.Closed circuit test results show that the qualified lead concentrate with the recovery of 90∙48% and the grade of 45∙24% can be produced with lime as a stabilizer‚sodium diethyl dithiocarbamate ( N‚N-diethyldithiocarbamate) and butylxanthate (butyl sodium xanthate) as combined collectors‚and by using the flotation flowsheet of one roughing‚two scavengings and two cleanings.T he qualified copper concentrate with the recovery of82∙17% and the grade of19∙28% can be produced with NP (a combined reagent by inorganic copper salts and inorganic zinc salts) as an activator‚organic depressant F M as a stabilizer‚Z-200 ( O-isopropy-l N-ethylthiocarbamate) and butyl ammonium aerofloat (ammonium dibutyl dithiophosphate) as combined collectors‚ and by using the flotation flowsheet of one roughing‚two scavengings and two cleanings.Gold and silver are also simultaneously en￾riched within the two kinds of concentrates. KEY WORDS cyanide tailings;selective flotation;lead recovery;copper recovery 收稿日期:20081031 作者简介:李正要(1976-)‚男‚博士‚讲师‚E-mail:zyli0213@sina.com 国内某金矿矿石主要含金、银和少量铜、铅‚提 金工艺为金精矿氰化浸出.随着矿山的不断开采‚ 氰化尾渣堆积量越来越多‚不仅占用大量土地‚而且 造成尾渣中铜、铅资源的浪费.国内已有部分矿山 对氰化尾渣中的有价金属进行了综合回收[1-2]‚但 多采用脱药、洗涤等预处理工艺[3-4]‚并产生大量难 处理的含氰废水;用硫酸活化铜[1‚5]‚会产生氢氰 酸‚危害环境.本文对该矿氰化尾渣进行系统研究‚ 采用不脱药、不洗涤以及无氢氰酸产生的工艺‚得到 含铅45∙24%的合格铅精矿和含铜19∙28%的合格 铜精矿;金、银同时富集到铅精矿和铜精矿.该工艺 回收氰化尾渣中铅、铜的成功‚对同类黄金矿山具有 借鉴意义. 1 氰化尾渣性质 氰化尾渣的主要元素分析结果如表1所示. 表1 氰化尾渣的主要元素分析结果(质量分数) Table1 Results of elemental analysis on cyanide tailings % 铅 铜 金/ (g·t -1) 银/ (g·t -1) 铁 硫 二氧化硅 4∙15 1∙49 1∙17 114 26∙18 24∙19 27∙24 第31卷 第10期 2009年 10月 北 京 科 技 大 学 学 报 Journal of University of Science and Technology Beijing Vol.31No.10 Oct.2009 DOI:10.13374/j.issn1001-053x.2009.10.016
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