【摘要】 本文研究了黄金生产过程中从载金炭上解吸金的一种新工艺——甲醇蒸馏解吸法的基本原理及工艺条件。结果表明，该工艺最佳解吸条件为：液固比为4：1，载金炭经过含有50％甲醇、4％氢氧化钠的预处理液，加热80℃预处理3h；再经50％的甲醇液80℃预浸1h；最后在80℃蒸馏回流4h。解吸金后的尾炭品位在100g／t以下，金的解吸率可超过98％，整个解吸过程约8—9h。更多还原

【Abstract】 In this paper, the optionalconditions of elution of gold from carbon by the methanol distillation procedure without cyanide are investigated. The procedure involves pretreatment of loaded carbon with NaOH/methanol followed by elution with methanol-water vapour and condensate. The results show that gold is stripped from the carbon in 8-9 hours in 1 bed volume of solution to give concentratied gold eluntes. Desorption of An is higher than 98%.更多还原