以山西某地含铜金精矿为研究对象,进行实验室试验和扩大试验,讨论分析了氨氰法、硫脲、硫代硫酸盐和分步浸取法的浸出条件和浸出效果.试验结果表明,对于金以非包裹形式存在的含铜金矿石,与硫脲法、硫代硫酸盐法、分步浸取法等选择性浸金方法相比,氨氰法具有浸出率高、试剂廉价、工艺简单等明显的优点.该方法与直接氰化相比,在金的浸出率达到92%的同时,大幅度地降低了氰化物耗量.根据实验室试验结果进行的扩大试验和半工业生产试验结果表明,氨氰法的工艺指标合理、稳定,是该含铜金矿石回收金的有效方法.
参考文献
| [1] | G Deschênes;E Ghali .Leaching of gold from a chalcopyrite concentrate by thiourea[J].Hydrometallurgy,1988,20(02):179-202. |
| [2] | J S J Van Deventer;M A Reuter;L Lorenzen et al.Galvanic interactions during the dissolution of gold in cyanide and thiourea solutions[J].Minerals Engineering,1990,3(06):589-597. |
| [3] | Gamini Senanayake .Review of rate constants for thiosulphate leaching of gold from ores, concentrates and flat surfaces: Effect of host minerals and pH[J].Minerals Engineering,2007(26):1-15. |
| [4] | D·M·穆尔,张兴仁,李长根.用硫代硫酸盐替代氰化物作为提金工艺中的一种浸出剂--问题与障碍[J].国外金属矿选矿,2005(03):5-12. |
| [5] | 姜涛;许时;陈荩 .硫代硫酸盐提金理论研究:金溶解动力学[J].黄金,1992,13(01):35-40. |
| [6] | Vukcevic S.; .THE MECHANISM OF GOLD EXTRACTION AND COPPER PRECIPITATION FROM LOW GRADE ORES IN CYANIDE AMMONIA SYSTEMS[J].Minerals Engineering,1997(3):309-326. |
| [7] | M.I. Jeffrey;L. Linda;P.L. Breuer .A kinetic and electrochemical study of the ammonia cyanide process for leaching gold in solutions containing copper[J].Minerals Engineering,2002(12):1173-1180. |
| [8] | N. Gonen;E. Korpe;M.E. Yildirim .Leaching and CIL processes in gold recovery from refractory ore with thiourea solutions[J].Minerals Engineering,2007(6):559-565. |
| [9] | M. Tannverdi;H. Mordogan;U. Ipekoglu .Leaching of Ovacik gold ore with cyanide, thiourea and thiosulphate[J].Minerals Engineering,2005(3):363-365. |
| [10] | J. Li;J.D. Miller .Reaction kinetics for gold dissolution in acid thiourea solution using formamidine disulfide as oxidant[J].Hydrometallurgy,2002(3):215-223. |
| [11] | 董岁明,姚坡,李绍卿.某难浸金精矿硫脲法浸金试验研究[J].黄金,2006(03):35-37. |
| [12] | Gamini Senanayake .Gold leaching by thiosulphate solutions: a critical review on copper(II)-thiosulphate-oxygen interactions[J].Minerals Engineering,2005(10):995-1009. |
| [13] | J.A. Heath;M.I. Jeffrey;H.G. Zhang .Anaerobic thiosulfate leaching: Development of in situ gold leaching systems[J].Minerals Engineering,2008(6):424-433. |
| [14] | Andrew C. Grosse;Greg W. Dicinoski;Matthew J. Shaw .Leaching and recovery of gold using ammoniacal thiosulfate leach liquors (a review)[J].Hydrometallurgy,2003(1/3):1-21. |
| [15] | D M Muir;MG Aylmore .Thiosulfate as an alternative lixiviant to cyanide for gold ores[J].Developments in Mineral Processing,2005,15:541-560. |
| [16] | Vukcevic S.; .THE MECHANISM OF GOLD EXTRACTION AND COPPER PRECIPITATION FROM LOW GRADE ORES IN CYANIDE AMMONIA SYSTEMS[J].Minerals Engineering,1997(3):309-326. |
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