组合捕收剂硫化浮选氧化铜的机理和应用（英文）
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摘要
通过浮选试验、芘荧光探针、zeta电位和红外光谱分析,研究组合捕收剂丁钠黄药(NaB X)和十二胺(DDA)对氧化铜浮选的影响。单矿物浮选试验表明,在pH7～11条件下,NaBX+DDA的浮选效果优于NaBX,其中NaBX与DDA的最佳摩尔比为2:1。实际矿的浮选试验表明,NaBX和DDA的用量为(100+54) g/t时,精矿中铜的品位和回收率分别为15.93%和76.73%。芘荧光探针结果表明,NaBX+DDA可降低胶束在矿浆中形成的浓度。Zeta电位和红外光谱测试结果表明,NaBX+DDA通过化学吸附、氢键吸附和静电吸附作用在孔雀石表面,并生成黄原酸铜和铜胺络合物。
The effect of sodium butyl xanthate(NaBX) and dodecylamine(DDA) as combined collector on the sulphidizing flotation of copper oxide was investigated by flotation test, fluorescent pyrene probe, zeta potential, and infrared spectroscopy analyses. The micro-flotation results show that combined use of NaB X+DDA yields better effect than using Na BX at pH 7-11 only, and the optimal molar ratio of NaBX to DDA is 2: 1. The actual ores flotation shows that when the dosage of NaBX+DDA is(100+54) g/t, the copper concentrate grade and recovery are 15.93% and 76.73%, respectively. The fluorescent pyrene probe test demonstrates that the NaBX+DDA can reduce the micelle concentration in the pulp. The zeta potential and the infrared spectroscopy analyses indicate that chemical adsorption, hydrogen-bonding and electrostatic interaction can help to adsorb NaBX+DDA on the surface of malachite. Meantime, copper xanthate and copper-amine complexes may be generated during the adsorption process.
The effect of sodium butyl xanthate(NaBX) and dodecylamine(DDA) as combined collector on the sulphidizing flotation of copper oxide was investigated by flotation test, fluorescent pyrene probe, zeta potential, and infrared spectroscopy analyses. The micro-flotation results show that combined use of NaB X+DDA yields better effect than using Na BX at pH 7-11 only, and the optimal molar ratio of NaBX to DDA is 2: 1. The actual ores flotation shows that when the dosage of NaBX+DDA is(100+54) g/t, the copper concentrate grade and recovery are 15.93% and 76.73%, respectively. The fluorescent pyrene probe test demonstrates that the NaBX+DDA can reduce the micelle concentration in the pulp. The zeta potential and the infrared spectroscopy analyses indicate that chemical adsorption, hydrogen-bonding and electrostatic interaction can help to adsorb NaBX+DDA on the surface of malachite. Meantime, copper xanthate and copper-amine complexes may be generated during the adsorption process.
引文
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[24]LOTTER N O,BRADSHAW D J.The formulation and use of mixed collectors in sulphide flotation[J].Minerals Engineering,2010,23(11):945-951.
[25]JANG Hao,XU Long-hua,HU Yue-hua,WANG Dian-zuo,LIChang-kai,MENG Wei,WANG Xing-jie.Flotation and adsorption of quaternary ammonium cationic collectors on diaspore and kaolinite[J]Transactions of Nonferrous Metals Society of China,2011,21:2528-2534.
[26]PARK K,PARK S,CHOI J,KIM G,TONG M.Influence of excess sulfide ions on the malachite-bubble interaction in the presence of thiol-collector[J].Separation and Purification Technology,2016,168:1-7.
[27]GAO Zhi-yong,SUN Wei,HU Yue-hua.New insights into the dodecylamine adsorption on scheelite and calcite:An adsorption model[J].Minerals Engineering,2015,79(8):54-61.
[28]ZHANG Ya-hui,CAO Zhao,CAO Yong-dan,SUN Chuan-yao.FTIRstudies of xanthate adsorption on chalcopyrite,pentlandite and pyrite surfaces[J].Journal of Molecular Structure,2013,1048:434-440.
[29]LAI Guo-yin,GUO Feng-feng,ZHENG Yue-qin.Highly enantioselective Henry reactions in water catalyzed by a copper tertiary amine complex and applied in the synthesis of(S)-N-trans-feruloyl octopamine[J].Chemistry,2011,17(4):1114-1117.
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[2]MA Yi-wen,HAN Yue-xin,ZHU Yi-ming,LI Yan-jun,LIU Hao.Flotation behaviors and mechanisms of chalcopyrite and galena after cyanide treatment[J].Transactions of Nonferrous Metals Society of China,2016,26:3245-3252.
[3]HUA Xiao-ming,ZHENG yong-fei,XU Qian,LU Xiong-gang.Interfacial reactions of chalcopyrite in ammonia-ammonium chloride solution[J].Transactions of Nonferrous Metals Society of China,2018,28:556-566.
[4]HAN Jun-wei,XIAO Jun,QIN Wen-qing.Copper recovery from Yulong complex copper oxide ore by flotation and magnetic separation[J].JOM,2017,69(9):1563-1569.
[5]KORDOSKY G A.Copper recovery using leach/solvent extraction/electrowinning technology:Forty years of innovation,2.2million tonnes of copper annually[J].Journal of South African Institute of Mining and Metallurgy,2002,102(8):445-450.
[6]BARTOS P J.SX-EW copper and the technology cycle[J].Resources Policy,2002,28:85-94.
[7]SOKIC M D,MILOSEVIC V D,STANKOVIC V D.Acid leaching of oxide-sulfide copper ore prior the flotation-A way for an increased metal recovery[J].Hemijska Industrija,2015,69(5):453-458.
[8]HOPE G A,NUMPRASANTHAI A,BUCKLEY A N.Bench-scale flotation of chrysocolla with n-octanohydroxamate[J].Minerals Engineering,2012,36-38(5):12-20.
[9]CHOI J,CHOI S Q,PARK K,HAN Y,KIM H.Flotation behaviour of malachite in mono-and di-valent salt solutions using sodium oleate as a collector[J].International Journal of Mineral Processing,2016,146:38-45.
[10]DENG Tong,CHEN Jia-yong.Treatment of oxidised copper ores with emphasis on refractory ores[J].Mineral Processing&Extractive Metallurgy Review,1991,7:175-207.
[11]BARBARO M,URBINA R H,COZZA C.Flotation of oxidized minerals of copper using a new synthetic chelating reagent as collector[J].International Journal of Mineral Processing,1997,50(4):275-287.
[12]LI Fang-xu,ZHONG Hong,XU Hai-feng,JIA Hui,LIU Guang-yi.Flotation behavior and adsorption mechanism ofα-hydroxyoctylphosphinic acid to malachite[J].Minerals Engineering,2015,71(2):188-193.
[13]FUERSTENAU D W,HERRERA-URBINA R,MCGLASHAN D W.Studies on the applicability of chelating agents as universal collectors for copper minerals[J].International Journal of Mineral Processing,2000,58(1):15-33.
[14]KIM G,PARK K,CHOI J.Bioflotation of malachite using different growth phases of Rhodococcus opacus:Effect of bacterial shape on detachment by shear flow[J].International Journal of Mineral Processing,2015,143(6):98-104.
[15]PARK K,PARK S,CHOI J,KIM G,TONG M.Influence of excess sulfide ions on the malachite-bubble interaction in the presence of thiol-collector[J].Separation and Purification Technology,2016,168:1-7.
[16]FENG Qi-cheng,ZHAO Wen-juan,WEN Shu-ming,CAO Qing-bo.Copper sulfide species formed on malachite surfaces in relation to flotation[J].Journal of Industrial and Engineering Chemistry,2017,48:125-132.
[17]GAO Zhi-yong,BAI Ding,SUN Wei,CAO Xue-feng,HU Yue-hua.Selective flotation of scheelite from calcite and fluorite using a collector mixture[J].Minerals Engineering,2015,72:23-26.
[18]JIN Jun-xun,GAO Hui-min,CHEN Xun-meng,PENG Yong-jun,MIN Fan-fei.The flotation of aluminosilicate polymorphic minerals with anionic and cationic collectors[J].Minerals Engineering,2016,99:123-132.
[19]VIDYADHAR A,KUMARI N,BHAGAT R P.Adsorption mechanism of mixed collector systems on hematite flotation[J].Minerals Engineering,2012,26(1):102-104.
[20]TIAN Jia,XU Long-hua,DENG Wei,JIANG Hao,GAO Zhi-yong.Adsorption mechanism of new mixed anionic/cationic collectors in a spodumene-feldspar flotation system[J].Chemical Engineering Science,2017,164:99-107.
[21]MEHDILO A,ZAREI H,IRANNAJAD M,ARJMANDFAR H.Flotation of zinc oxide ores by cationic and mixed collectors[J].Minerals Engineering,2012,36-38(10):331-334.
[22]LEE J S,NAGARAJ D R,COE J E.Practical aspects of oxide copper recovery with alkyl hydroxamates[J].Minerals Engineering,1988,11:929-939.
[23]HANSON J S,FUERSTENAU D W.The electrochemical and flotation behavior of chalcocite and mixed oxide/sulfide ores[J].International Journal of Mineral Processing,1991,33:33-47.
[24]LOTTER N O,BRADSHAW D J.The formulation and use of mixed collectors in sulphide flotation[J].Minerals Engineering,2010,23(11):945-951.
[25]JANG Hao,XU Long-hua,HU Yue-hua,WANG Dian-zuo,LIChang-kai,MENG Wei,WANG Xing-jie.Flotation and adsorption of quaternary ammonium cationic collectors on diaspore and kaolinite[J]Transactions of Nonferrous Metals Society of China,2011,21:2528-2534.
[26]PARK K,PARK S,CHOI J,KIM G,TONG M.Influence of excess sulfide ions on the malachite-bubble interaction in the presence of thiol-collector[J].Separation and Purification Technology,2016,168:1-7.
[27]GAO Zhi-yong,SUN Wei,HU Yue-hua.New insights into the dodecylamine adsorption on scheelite and calcite:An adsorption model[J].Minerals Engineering,2015,79(8):54-61.
[28]ZHANG Ya-hui,CAO Zhao,CAO Yong-dan,SUN Chuan-yao.FTIRstudies of xanthate adsorption on chalcopyrite,pentlandite and pyrite surfaces[J].Journal of Molecular Structure,2013,1048:434-440.
[29]LAI Guo-yin,GUO Feng-feng,ZHENG Yue-qin.Highly enantioselective Henry reactions in water catalyzed by a copper tertiary amine complex and applied in the synthesis of(S)-N-trans-feruloyl octopamine[J].Chemistry,2011,17(4):1114-1117.
[30]TEO L S,CHEN C Y,KUO J F.Fourier transform infrared spectroscopy study on effects of temperature on hydrogen bonding in amine-containing polyurethanes and poly(urethane-urea)s[J].Macromolecules,1997,30(6):1793-1799.
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