نوع مقاله : علمی - پژوهشی
نویسندگان
1 فارغ التحصیل کارشناسی ارشد، دانشکده فنی مهندسی، گروه معدن، دانشگاه لرستان،خرم آباد، ایران
2 دانشیار، دانشکده فنی مهندسی، گروه معدن، دانشگاه لرستان، خرم آباد، ایران
3 استادیار، دانشکده فنی مهندسی، گروه معدن، دانشگاه لرستان، خرم آباد، ایران
چکیده
کلیدواژه‌ها
عنوان مقاله [English]
نویسندگان [English]
Many different lixiviants have been investigated as alternatives to cyanide for gold leaching. Due to environmental, technical, and economic constraints, the industrial application of these alternative methods is still rare up to now. Recent research works have indicated the viability of amino acids and particularly glycine, as an alternative lixiviant to cyanide in the gold industry. In this research, the cyanide-glycine leaching of gold ore has been studied using sign of experiments. The effects of hydrogen peroxide oxidant, cyanide concentration, glycine concentration, and solid content were considered. The results showed that the most effective parameters are solid content, glycine concentration, cyanide concentration, and oxidant concentration, respectively. Gold recovery decreased by increasing solid content, glycine concentration, and cyanide concentration. The maximum gold recovery was achieved when these parameters are at their lowest levels. In optimum conditions, 81% gold recovery could be obtained at 2.49% hydrogen peroxide, 150 ppm cyanide, 0.35 mol/L glycine, and 25% solid content.
کلیدواژه‌ها [English]
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