CAJ | 학술논문

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。
채용석류합제제금법대고류금정광진행침출시험，고찰료SO 2-3、NH3? H2 O、Cu 2＋농도대침출과정적영향。기결과표명：재마광세도-400목80％，액고비6∶1，SO 2-3농도0．1 mol/L， NH3? H2 O농도1．6 mol/L，Cu 2＋농도0．04 mol/L，Na2 CO3농도0．1 mol/L，교반속도500 r/min，침출온도40℃，침출시간8 h적조건하，금적침출솔체도88％좌우；침출과정중가입SO 2-3，보증S 2-x화S2 O 2-3적은정성，병감소인S단질、CuS화Cu2 S적침적이조애침금전질과정적영향；NH3? H2 O불부조절침출pH치，이차여Cu 2＋형성[Cu（NH3）4]2＋，촉진금적침출。
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 .