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compositions of gold containing materials Fig.1 Gold leaching recoveries for three kinds of gold containing ores (Grinding grade ＜0.074 mm 99.50%, slurry density 20%, NaCN 0.2%, pH 11, and stirring speed 1.... Therefore, anodic intensifiers should not be suitable for gold ores containing oxygen consuming components. In order to acquire expectant accelerating effect on gold leaching, cathodic process must......
[21, 23]. In order to eliminate the adverse effects of copper minerals, it is often necessary to add a certain amount of leaching aid during the cyanidation of copper-bearing gold ores [24-27]. However, there is a corresponding relationship between these leaching aids and the copper-bearing gold ores. For example, ammonia-based leaching aids have the most efficacious effect on copper- containing......
The treatment of refractory gold ores(or concentrates)[1 , 2] attracts more concerns of metallurgists. If there is not only arsenopyrite(FeAsS) bearing gold but also carbonaceous matter contained in the refractory ores, it could be more difficult for the extraction of gold[3-6]. Under many conditions, the carbonaceous matter in refractory ores could possess a strong capability of preg robbing[7-9......
乙酸丁酯萃取-火焰原子吸收光谱法测定矿石中痕量金单兴刚1,林云芬2(1.浙江省绍兴市绍兴平铜集团2.绍兴日月首饰集团,浙江绍兴 312000)摘 要:以乙酸丁酯为萃取剂,建立了火焰原子吸收光谱法测定矿石中痕量金的方法,讨论了矿石的灼烧温度,萃取溶液中溴化钾加入量和王水的浓度等因素的影响.结果表明,其适宜条件为控制灼烧温度为700℃,萃取溶液中溴化钾溶液(100 g/L)加入量为3.0 mL和王水浓度为20%(V/V).方法检出限为0.03μg/mL.本法用于矿石中金的测定,相对标准偏差≤6.5%,回收率在99%......
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efficiency of a high sulfur refractory gold concentrate [J]. Journal of Central South University, 2020, 27(5): 1416-1423. DOI: https://doi.org/10.1007/s11771-020-4377-z. 1 Introduction Gold ores are mainly categorized into two types: non-refractory (fine milling) gold ores, in which most of the gold can be recovered by direct cyanidation, and refractory gold ores, which require pretreatment before......
；浸金；除铁Pretreatment by sulfuric acid-curing of calcine roasting for gold ores with high sulfur and arsenic contentsYANG Yong-bin,ZENG Guan-wu,LI Qian,LIU Xiao-liang,JIANG Tao,LIU Bo(School of Minerals... iron in calcine is reduced to 7.23% after a pretreatment of sulfuric acid content 75%,excess coefficient of sulfuric acid 1.4,curing temperature 250 ℃ and curing time 1 h.Key words:gold ores with high......
Mechanism of mechanical activation for sulfide ores HU Hui-ping(胡慧萍)1, 2, CHEN Qi-yuan(陈启元)1, YIN Zhou-lan(尹周澜)1, HE Yue-hui(贺跃辉)2, HUANG Bai-yun(黄伯云)2 1. Institute of Metallurgical...) and scanning electron microscopy(SEM), respectively. Based on the above structural changes for mechanically activated sulfide ores and related reports by other researchers, several qualitative rules......
