Leaching behavior of butanedionedioxime as gold ligand
来源期刊:中国有色金属学报(英文版)2000年第2期
论文作者:李德良 黄念东 王淀佐
文章页码:250 - 252
Key words:gold; leaching; lixiviation
Abstract: Butanedionedioxime, a small organic compound with low-toxicity and good chemical stability, has been proposed as an effective gold ligand in gold extraction. The result of experiment shows that: 1) highly effective gold lixiviant can be composed of butanedionedioxime (BDM) with many oxidants, especially potassium permanganate; 2)in the leaching system of BDM-KMnO4the suitable Ox/Lig(ratio of oxidants to gold ligands) range is 0.20~0.50, optimally 0.25~ 0.45 at the pH range of 7~11; 3) BDM-KMnO4extraction of gold from an oxide ore is similar to cyanide(cyanide-O2) extraction, but the leaching rate of gold by BDM-KMnO4 is faster than that by cyanide-O2; 4) gold may readily be recovered by carbon adsorption and zinc precipitation.