Possibilities for the Environmental Processing of Gold-Bearing Ores

This article will focus on the alkaline leaching of gold-bearing tetrahedrite concentrate in a solution containing sodium sulfide and hydroxide. selective is followed by heavy waste metals into solution, which may influence physical properties quality desired product, possibly causing environmental toxicity. At same time, amount gold was observed during process to increase its content solid phase for possibility recovery subsequent extraction precious metal. Sodium works very effectively minerals include tetrahedrite, hydroxide eliminates hydrolysis sulfur slows leaching. The kinetics were carried out with duration five hours, based volume sampling at certain time intervals from three samples, characteristic NaOH concentration, efficiency results atomic absorption spectrometry. residue analyzed through X-ray photoelectron analysis spectrometry, % solids determined, it also known deduce leached each sample.