复合氨浸法处理低品位难处理氧化锌矿工艺研究
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摘要
采用复合氨浸法[NH_3-(NH_4)_2CO_3-NH_4Cl]处理低品位难处理氧化锌矿。条件试验研究得出较佳浸出条件为:总氨浓度4 mol/L,温度为40℃,液固比4:1,浸出时间240 min,粒度-0.074 mm。在较佳浸出条件下,锌的浸出率高达到91.64%,浸出液中Cd、Pb、Cu、Si等杂质离子的含量较低。净化结果表明:用锌粉净化浸出液,杂质离子的最高净化效率可达到99.27%。
The compound ammonia leaching method [NH_3-(NH_4)_2CO_3-NH_4Cl] was used for processing the low-grade and refractory zinc oxide ore. Condition test show the best leaching conditions ate total ammonia concentration of 4 mol/L, the temperature of 40℃, the liquid-solid ratio 4:1, leaching time of 240 min, mineral particle size of 0.074 mm. Under the best leaching conditions, the leaching rate of zinc is highly of 91.64%, the content of impurity ions is lower in leaching liquid such as Cd, Pb, Cu, Si, etc. Purification results show that with zinc dust purification leach liquor, the impurity ions of the purification efficiency reach 99.27%.
The compound ammonia leaching method [NH_3-(NH_4)_2CO_3-NH_4Cl] was used for processing the low-grade and refractory zinc oxide ore. Condition test show the best leaching conditions ate total ammonia concentration of 4 mol/L, the temperature of 40℃, the liquid-solid ratio 4:1, leaching time of 240 min, mineral particle size of 0.074 mm. Under the best leaching conditions, the leaching rate of zinc is highly of 91.64%, the content of impurity ions is lower in leaching liquid such as Cd, Pb, Cu, Si, etc. Purification results show that with zinc dust purification leach liquor, the impurity ions of the purification efficiency reach 99.27%.
引文
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[16]王瑞祥,余攀,曾斌,等.NH3-NH4Cl-H2O体系氧化锌矿柱浸试验研究[J].有色金属:冶炼部分,2013(11):4-6.
[2]戴自希.世界铅锌资源的分布、类型和勘查准则[J].世界有色金属,2005(3):15-23.
[3]刘亚川,刘述平,李博,等.低品位氧化锌矿的氨-铵盐浸出研究[J].矿产综合利用,2008(2):3-6.
[4]王凤琴.国内外氧化锌矿的处理方法[J].有色矿冶,1994,10(1):31-35.
[5]陈世明,瞿开流.兰坪氧化锌矿石处理方法探讨[J].云南冶金,1998,27(5):31-35.
[6]郭兴忠,张丙怀,阳海彬,等.熔融还原处理低品位氧化锌矿的研究[J].矿冶工程,2003,23(1):57-60.
[7]李国民.高硅氧化锌矿浸出脱硅工艺的研究[J].中国有色冶金,2005,34(4):32-35.
[8]李存兄,魏昶,樊刚,等.高硅氧化锌矿加压酸浸处理[J].中国有色金属学报,2009,19(9):1678-1682.
[9]Qin W Q,Li W Z,Lan Z Y,et al.Simulated smallscale pilotplant heap leaching of low-grade oxide zinc ore with integrated selective extraction of zinc[J].Minerals Engineering,2007,(20):694-700.
[10]张显生,石明忠,许永红,等.高硅天然氧化锌矿浸出新工艺的研究[J].有色金属:冶炼部分,2003(2):14-15.
[11]林祚彦,华一新.高硅氧化锌矿硫酸浸出的工艺及机理研究[J].有色金属:冶炼部分,2003(5):9-11.
[12]蓝卓越,胡岳华,黎维中.低品位氧化锌矿硫酸浸出工艺研究[J].矿冶工程,2002,22(3):63-65.
[13]Kazinczy B,Kotai L,Gacs I,et al.Study on ammoniacal leaching of zinc from sludges containing iron and zinc hydroxides[J].Hungarian Journal of Industrial Chemistry,2000,28(3):207-210.
[14]T G Harvey.The hydrometallurgical extraction of zinc by ammonium carbonate:A review of the Schnabel Process[J].Mineral Processing and Extractive Metallurgy Review,2006,27(4):231-279.
[15]刘晓丹,张元福.铵盐浸出氧化锌矿动力学的研究[J].贵州工业大学学报:自然科学版,2004,33(2):82-85.
[16]王瑞祥,余攀,曾斌,等.NH3-NH4Cl-H2O体系氧化锌矿柱浸试验研究[J].有色金属:冶炼部分,2013(11):4-6.