Leaching behavior of butanedionedioxime as gold ligand

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 KMnO 4 the 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 KMnO 4 extraction of gold from an oxide ore is similar to cyanide(cyanide O 2) extraction, but the leaching rate of gold by BDM KMnO 4 is faster than that by cyanide O 2; 4) gold may readily be recovered by carbon adsorption and zinc precipitation.

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-KMnO(4) the suitable Ox/Lig( ratio of oxidants to gold ligands) range is 0.20 similar to 0.50, optimally 0.25 similar to 0.45 at the pH range of 7 similar to 11; 3) BDM-KMnO(4) extraction of gold from an oxide ore is similar to cyanide(cyanide-O(2)) extraction, but the leaching rate of gold by BDM-KMnO(4) is faster than that by cyanide-O(2); 4) gold may readily be recovered by carbon adsorption and zinc precipitation.