滇东某多金属氧化铅锌矿高效回收选矿工艺
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摘要
对滇东某多金属氧化铅锌矿采用先铅后锌的工艺浮选,浮选流程均为两粗一精一扫.结果表明,矿石中有价元素为铅、锌、银,铅主要赋存于白铅矿和铅矾中,锌主要赋存于菱锌矿和异极矿中,银以伴生形式存在,目的矿物嵌布粒度较细.浮选所得铅精矿铅品位为61.45%,铅回收率为86.41%,银品位为451.58 g/t,银回收率为66.73%,含锌3.68%;锌精矿锌品位为42.32%,锌回收率为90.63%,含铅1.39%.两性捕收剂R_(144)对锌的捕收能力和选择性比十二胺、十八胺和二者混合胺更好.
A selective flotation process of lead minerals was developed to a lead-zinc oxide ore in the eastern region of Yunnan Province, China. The flotation process with two roughing, one cleaning and one scavenging was adopted in the recovery of lead and zinc. The results showed that the valuable elements in the ore were lead, zinc and silver. The main minerals of lead cerussite and anglesite, zinc were smithsonite and hemimorphite respectively, and silver minerals associated mostly with lead minerals. The dissemination of valuable minerals was relatively fine. The lead concentrate grade was 61.45% with Pb recovery rate 86.41%, the grade of Ag was 451.58 g/t and the recovery rate was 66.73%, containing 3.68% Zn. The zinc concentrate grade was 42.32% and the recovery of Zn was 90.63%, containing 1.39% Pb. The amphoteric collector R144 showed better performance both in collecting ability and selectivity to zinc minerals than that of dodecylamine, octadecylamine and combined amines.
A selective flotation process of lead minerals was developed to a lead-zinc oxide ore in the eastern region of Yunnan Province, China. The flotation process with two roughing, one cleaning and one scavenging was adopted in the recovery of lead and zinc. The results showed that the valuable elements in the ore were lead, zinc and silver. The main minerals of lead cerussite and anglesite, zinc were smithsonite and hemimorphite respectively, and silver minerals associated mostly with lead minerals. The dissemination of valuable minerals was relatively fine. The lead concentrate grade was 61.45% with Pb recovery rate 86.41%, the grade of Ag was 451.58 g/t and the recovery rate was 66.73%, containing 3.68% Zn. The zinc concentrate grade was 42.32% and the recovery of Zn was 90.63%, containing 1.39% Pb. The amphoteric collector R144 showed better performance both in collecting ability and selectivity to zinc minerals than that of dodecylamine, octadecylamine and combined amines.
引文
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[18]朱玉霜,朱建光.浮选药剂的化学原理[M].长沙:中南工业大学出版社,1987:332-333.
[2]陈军,卫亚儒,胡聪,等.氧化铅锌矿选矿现状及最新进展[J].中国矿山工程,2015,44(2):19-23.Chen J,Wei Y R,Hu C,et al.Present Situation and the Latest Progress of Oxidized Lead-Zinc Ore[J].China Mine Engineering,2015,44(2):19-23.
[3]刘晓,张宇,王楠,等.我国铅锌矿资源现状及其发展对策研究[J].中国矿业,2015,24(增刊1):6-9.Liu X,Zhang Y,Wang N,et al.Pb-Zn Metal Resources Situation and Suggestion for Pb-Zn Metals Industry Development in China[J].China Mining Magazine,2015,24(S1):6-9.
[4]Wet J R D,Singleton J D.Development of a Viable Process for the Recovery of Zinc from Oxide Ores[J].J.South Afr.Inst.Min.Metall.,2008,108(5):253-259.
[5]Nal G,Bulut G,Gl A,et al.Flotation of Alada Oxide Lead-Zinc Ores[J].Miner.Eng.,2005,18(2):279-282.
[6]陈晔.阳离子胺类捕收剂浮选异极矿氧化锌及其作用机理研究[D].南宁:广西大学,2006:5-6.Chen Y.The Study of Flotation of Hemimorphite Zinc Oxide by Using Cation Amine Collector and Its Mechanism[D].Nanning:Guangxi University,2006:5-6.
[7]Moradi S,Monhemius A J.Mixed Sulphide–Oxide Lead and Zinc Ores:Problems and Solutions[J].Miner.Eng.,2011,24(10):1062-1076.
[8]胡岳华,印万忠,张凌燕,等.矿物浮选[M].长沙:中南大学出版社,2014:291-292.
[9]冉金城,刘全军,张治国,等.腾冲高泥氧化锌矿选矿实验研究[J].过程工程学报,2015,15(4):559-566.Ran J C,Liu Q J,Zhang Z G,et al.Research on Concentrate of Zinc Oxide Ore with High Content Slime from Tengchong[J].Chin.J.Process Eng.,2015,15(4):559-566.
[10]Mehdilo A,Zarei H,Irannajad M,et al.Flotation of Zinc Oxide Ores by Cationic and Mixed Collectors[J].Miner.Eng.,2012,36/38(10):331-334.
[11]Ejtemaei M,Gharabaghi M,Irannajad M.A Review of Zinc Oxide Mineral Beneficiation Using Flotation Method[J].Adv.Colloid Interface Sci.,2014,206(2):68-78.
[12]Kuchar D,Fukuta T,Onyango M S,et al.Sulfidation Treatment of Molten Incineration Fly Ashes with Na2S for Zinc,Lead and Copper Resource Recovery[J].Chemosphere,2007,67(8):1518-1525.
[13]Feng Q,Wen S,Zhao W,et al.Contribution of Chloride Ions to the Sulfidization Flotation of Cerussite[J].Miner.Eng.,2015,83:128-135.
[14]Wu D,Ma W,Wen S,et al.Contribution of Ammonium Ions to Sulfidation?Flotation of Smithsonite[J].J.Taiwan Inst.Chem.Eng.,2017,78(9):20-26.
[15]Irannajad M,Ejtemaei M,Gharabaghi M.The Effect of Reagents on Selective Flotation of Smithsonite–Calcite–Quartz[J].Miner.Eng.,2009,22(9/10):766-771.
[16]Kuchar D,Fukuta T,Onyango M S,et al.Sulfidation of Zinc Plating Sludge with Na2S for Zinc Resource Recovery[J].J.Hazard.Mater.,2006,137(1):185-191.
[17]李健民,宋凯伟,章晓林,等.组合抑制剂柠檬酸钠和焦磷酸钠在某铅锌矿分离浮选中的作用[J].过程工程学报,2017,17(3):500-505.Li J M,Song K W,Zhang X L,et al.Effect of Combined Reagents of Ctrate Sodium Pyrophosphate on Flotation Separation of a Polymetallic Lead-Zinc Ore[J].Chin.J.Process Eng.,2017,17(3):500-505.
[18]朱玉霜,朱建光.浮选药剂的化学原理[M].长沙:中南工业大学出版社,1987:332-333.