期刊
MINERALS ENGINEERING
卷 20, 期 6, 页码 559-565出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.mineng.2006.11.003
关键词
gold ores; sulfide ores; activated carbon; hydrometallurgy; leaching
In this study, the applicability of leaching and CIL processes in gold recovery with thiourea method, alternative to the cyanidation from the refractory Gumushane-Kaletas/Eastern Black Sea Region (Turkey) ore was investigated. The experiments were conducted at laboratory conditions using ore samples of which approximately 80%, were ground to -0.038 mm. The grade of the ore samples was 6.8 g Au/ton. At the first part of the experimental studies, assuming that the gold could be recovered with CIC and CIP processes, the effects of pH, thiourea, oxidizing agent consumption, and leaching time on leaching were investigated. Then, on the basis of the optimum pH and reagent consumption values obtained in the first part (pH = 1.5, 15.2 kg thiourea/ton ore, 140.9 kg iron(III) sulfate/ton ore and 46.2 kg sulfuric acid consumption/ton ore) and adding 50 kg activated carbon/ton ore at the beginning of experiments, the gold leaching extents were obtained for the same leaching times. At this part, the applicability of CIL process in gold recovery with thiourea was investigated for the first time. As a result of the experiments, although higher gold leaching extents were obtained in CIL process, the increase in extent was about maximum 8% and the highest gold leaching extent was obtained as 75% at the end of the 5th hour. (C) 2006 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据