采用石硫合剂提金法对高硫金精矿进行浸出试验，考察了SO 2-3、NH3? H2 O、Cu 2＋浓度对浸出过程的影响。其结果表明：在磨矿细度-400目80％，液固比6∶1，SO 2-3浓度0．1 mol/L， NH3? H2 O浓度1．6 mol/L，Cu 2＋浓度0．04 mol/L，Na2 CO3浓度0．1 mol/L，搅拌速度500 r/min，浸出温度40℃，浸出时间8 h的条件下，金的浸出率达到88％左右；浸出过程中加入SO 2-3，保证S 2-x和S2 O 2-3的稳定性，并减少因S单质、CuS和Cu2 S的沉积而阻碍浸金传质过程的影响；NH3? H2 O不仅调节浸出pH值，而且与Cu 2＋形成[Cu（NH3）4]2＋，促进金的浸出。
Leaching experiments were carried out on high-sulfur gold concentrate using LSSS and the effects of SO2-3 ,NH4? H2 O,Cu 2+on gold extraction were investigated.High gold recovery of 88 % is obtained when 80 % of grinding fineness is -400 mesh,liquid-solid ratio(L/S) is 6∶1,concentration of SO2-3 is 0.1 mol/L,concentration of NH3? H2 O is 0.1 mol/L,concentration of Cu 2+is 0.1 mol/L,concentration of Na 2 CO3 is 0.1 mol/L,stilling intensity is 500 r/min,leaching temperature is 40℃,and leaching time is 8h.SO2-3 is not only keeping the stability of Sx 2-and S2 O 2-3 but also decreasing the bad influence of hindering mass transfer process on leaching because of the deposition of S,CuS and Cu2S.NH3? H2O not only adjusts the slurry pH but also forms complex [Cu(NH3 ) 4 ] 2+with Cu 2+which is beneficial for gold leaching in the leaching process .
参考文献
| [1] | 钟俊.非氰浸金技术的研究及应用现状[J].黄金科学技术,2011(06):57-61. |
| [2] | 白成庆.非氰浸金试剂的应用现状及发展[J].矿业快报,2008(12):12-17. |
| [3] | 周源,陈江安.非氰药剂浸金进展[J].南方金属,2003(05):6-8,59. |
| [4] | 玉涵,胡显智.氰化及非氰化提金方法综述[J].云南冶金,2010(03):9-12. |
| [5] | Gavin Hilson;A.J. Monhemius .Alternatives to cyanide in the gold mining industry: what prospects for the future?[J].Journal of cleaner production,2006(12/13):1158-1167. |
| [6] | S. Syed.Recovery of gold from secondary sources-A review[J].Hydrometallurgy,2012:30-51. |
| [7] | 陈江安,周源.石硫合剂（LSSS）浸金的研究[J].南方冶金学院学报,2005(03):74-77,82. |
| [8] | 傅平丰,孙春宝,康金星,龚道振.石硫合剂法浸金的原理、稳定性及应用研究进展[J].贵金属,2012(02):67-70. |
| [9] | 杨丙雨,兰新哲,张箭.石硫合剂的提金原理及应用[J].贵金属,1997(02):58-61. |
| [10] | 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. |
| [11] | M.G.AYLMORE;D.M.MUIR .THIOSULFATE LEACHING OF GOLD - A REVIEW[J].Minerals Engineering,2001(2):135-174. |
| [12] | 苏大雄 .若干含硫试剂浸金应用基础研究[D].西安建筑科技大学,2003. |
| [13] | 周军,张秋利,兰新哲,宋永辉.含硫试剂对某难处理金精矿的浸出研究[J].金属矿山,2008(03):103-105,137. |
| [14] | 陈怡,宋永辉.某碳质金精矿石硫合剂法浸出试验研究[J].黄金,2012(03):43-46. |
| [15] | 郁能文,张箭.用石硫合剂（LSSS）法从高铅金精矿浸出金[J].贵金属,1994(01):10-14. |
| [16] | 周军,兰新哲,张秋利.非氰浸金LSSS在大气中稳定性研究[J].有色金属（冶炼部分）,2008(03):31-33,43. |
| [17] | 李晶莹,黄璐.石硫合剂法浸取废弃线路板中金的试验研究[J].黄金,2009(10):48-51. |
| [18] | 周军,兰新哲,宋永辉.改性石硫合剂（ML）浸金试剂稳定性研究[J].稀有金属,2008(04):531-535. |
| [19] | 党晓娥 .LSSS、ML制备及其溶金体系的研究[D].西安:西安建筑科技大学,2001. |
| [20] | 郁能文;张箭 .LSSS浸金的电化学研究[J].黄金,1998,19(02):34-35. |
| [21] | Rong-Yu Wan;K. Marc LeVier .Solution chemistry factors for gold thiosulfate heap leaching[J].International Journal of Mineral Processing,2003(1/4):311-322. |
| [22] | 梁新宇,陈东辉.硫代硫酸钠法添加Cu2+浸取废弃电子线路板中的金[J].环保科技,2007(03):29-32. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%