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such as biohydrometallurgy[1-3]. Bacterially-assisted heap leaching of low-grade copper sulphides is a developing technology that has been applied successfully to the extraction of copper from secondary sulphide... Bacterial leaching of chalcopyrite and bornite with native bioleaching microorganism WANG Jun(王 军), QIN Wen-qing(覃文庆), ZHANG Yan-sheng(张雁生), YANG Cong-ren(杨聪仁), ZHANG Jian-wen(张建......
验条件如下: pH值1.0~2.0,常温,转速400 r/min,时间3.0 h,液固比L/S=6,活性炭浓度为80 g/L ,Fe3+浓度3~5 g/L,鼓入空气,考察硫脲浓度对金浸出率的影响,结果见图2. 图2 硫脲浓度对金浸出率影响 Fig. 2 Effect of thiourea concentration on Au leaching efficiency 从... 初始条件如下:pH值11.0~11.5,常温,转速400 r/min,液固比L/S=6,活性炭浓度为80 g/L,时间3.0 h,鼓入空气,考察非氰浸金剂多硫化物浓度对金浸出率的影响,结果见图3. 图3 多硫化物浓度对金浸出率影响 Fig. 3 Effect of polysulfide concentration on Au leaching efficiency 从图......
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Microbial leaching of marmatite by Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans WANG Jun(王 军), QIU Guan-zhou(邱冠周), QIN Wen-qing(覃文庆), ZHANG Yan-sheng(张雁生) School... was studied. After leaching for 29 days, the leaching ratio of zinc was 91%. Three kinds of bacteria, mixture-based bacteria, 9K-based bacteria and sulfur-based bacteria were used in marmatite leaching......
高含泥氧化铜矿石分粒级筑堆技术及其应用王洪江1,吴爱祥1,顾晓春2,张新普3,张仪3(1.北京市北京科技大学土木与环境工程学院2.云南铜业集团公司3.迪庆矿业开发有限责任公司)摘 要:高含泥氧化矿石浸堆因渗透性差而影响堆浸的正常进行.渗透试验表明,高含泥氧化矿石矿堆的渗透性与矿石粒级组成密切相关,采取矿石堆浸粒级划分:-1 mm为泥质物,+5 mm为块状矿,5~1 mm之间为粉状矿.在此基础上,提出了分粒级筑堆技术,即先对矿石进行分级,然后按粒级分区筑堆,对不同粒级浸堆采用不同的布液强度.该项技术应用在云南某铜......
J. Cent. South Univ. (2020) 27: 1373-1385 DOI: https://doi.org/10.1007/s11771-020-4373-3 Comparison of leaching of bornite from different regions mediated by mixed moderately thermophilic bacteria... ferriphilum YSK, Acidithiobacillus caldus D1 and Sulfobacillus thermosulfidooxidans ST. The results of bioleaching experiments showed that the leaching efficiency and the redox potential were significantly......
量的硫以单质的形式残留在合成渣中,渣中残留的硫随硫黄与石灰质量比的增加而增多. 关键词:石硫合剂;浸出特性;金精矿;非氰浸金;转化率 中图分类号:TF803.21 文献标志码:A Effects of lime sulphur synthetic solution on leaching characteristic of gold..., Beijing 100083, China) Abstract: Lime sulphur synthetic solution (LSSS) method was applied in gold concentrates leaching. The effect of mass ratio of sulphur, lime and water and synthetic time......
Intensification of pretreatment and pressure leaching of copper anode slime by microwave radiationYANG Hong-ying(杨洪英)1, MA Zhi-yuan(马致远)1, 2, HUANG Song-tao(黄松涛)2, LV Yang(吕阳)1, XIONG Liu(熊柳)1(1... 100088, China)Abstract:The application of microwave irradiation for pretreatment of copper anode slime with high nickel content prior to pressure sulfuric acid leaching has been proposed. The microwave......
leaching in germ-free system OU Le-ming(欧乐明), HE Rong-quan(何荣权), FENG Qi-ming(冯其明) (School of Resources Processing and Bioengineering, Central South University, Changsha 410083, China) Abstract: The effect of mineral particle size, pulp potential and category of oxidant on pyrite leaching was studied. The results show that a smaller mineral particle size leads to a higher leaching rate of pyrite......
边磨边浸过程中氰化物耗量大的机理探索蓝碧波1(1.福建省龙岩市上杭县紫金矿冶设计研究院)摘 要:对边磨边浸过程氰化物耗量大的原因进行了探索研究.研究结果表明:边磨边浸过程中产生的铁粉会消耗大量的氰化物;此外,在边磨边浸过程中部分氰化物可能水解挥发或被氧化分解.关键词:边磨边浸; 铁; 氰化物耗量; 金浸出率......