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Industrial Heap Bioleaching of Copper Sulfide Ore Started with Only Water Irrigation

文献类型：期刊论文

作者Jia, Yan1,2; Sun, Heyun1,2; Tan, Qiaoyi1,2; Xu, Jingyuan3; Feng, Xinliang3; Ruan, Renman1,2
刊名MINERALS
出版日期2021-11-01
卷号11期号:11页码:15
关键词copper sulfide ore heap bioleaching pyrite sulfuric acid water irrigation
DOI10.3390/min11111299
英文摘要Sulfuric acid solution containing ferric iron is the extractant for industrial heap bioleaching of copper sulfides. To start a heap bioleaching plant, sulfuric acid is usually added to the irrigation solution to maintain adequate acidity (pH 1.0-2.0) for copper dissolution. An industrial practice of heap bioleaching of secondary copper sulfide ore that began with only water irrigation without the addition of sulfuric acid was successfully implemented and introduced in this manuscript. The mineral composition and their behavior related to the production and consumption of sulfuric acid during the bioleaching in heaps was analyzed. This indicated the possibility of self-generating of sulfuric acid in heaps without exogenous addition. After proving by batches of laboratory tests, industrial measures were implemented to promote the sulfide mineral oxidation in heaps throughout the acidifying stages, from a pH of 7.0 to 1.0, thus sulfuric acid and iron was produced especially by pyrite oxidation. After acidifying of the heaps, adapted microbial consortium was inoculated and established in a leaching system. The launch of the bioleaching heap and finally the production expansion were realized without the addition of sulfuric acid, showing great efficiency under low operation costs.
WOS关键词FERROUS IRON OXIDATION ; PYRITE OXIDATION ; DISSOLVED-OXYGEN ; MINE DRAINAGE ; SULFATE-IONS ; DISSOLUTION ; KINETICS ; TEMPERATURE ; CHEMISTRY ; SURFACE
资助项目Innovation Academy for Green Manufacture, the Chinese Academy of Sciences[IAGM-2019A08] ; National Natural Science Foundation of China[51674231]
WOS研究方向Geochemistry & Geophysics ; Mineralogy ; Mining & Mineral Processing
语种英语
WOS记录号WOS:000726679700001
出版者MDPI
资助机构Innovation Academy for Green Manufacture, the Chinese Academy of Sciences ; National Natural Science Foundation of China
源URL[http://ir.ipe.ac.cn/handle/122111/51271]  
专题中国科学院过程工程研究所
通讯作者Ruan, Renman
作者单位1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Res Ctr Green Recycling Strateg Met Res, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
3.Norin Min Ltd, Beijing 100053, Peoples R China
推荐引用方式
GB/T 7714		 Jia, Yan,Sun, Heyun,Tan, Qiaoyi,et al. Industrial Heap Bioleaching of Copper Sulfide Ore Started with Only Water Irrigation[J]. MINERALS,2021,11(11):15.
APA Jia, Yan,Sun, Heyun,Tan, Qiaoyi,Xu, Jingyuan,Feng, Xinliang,&Ruan, Renman.(2021).Industrial Heap Bioleaching of Copper Sulfide Ore Started with Only Water Irrigation.MINERALS,11(11),15.
MLA Jia, Yan,et al."Industrial Heap Bioleaching of Copper Sulfide Ore Started with Only Water Irrigation".MINERALS 11.11(2021):15.

入库方式： OAI收割

来源：过程工程研究所

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