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Trans. Nonferrous Met. Soc. China 29(2019) 1294-1303 Comparative study on chalcopyrite bioleaching with assistance of different carbon materials by mixed moderate thermophiles Ping ZHU1,3, Xue-duan... artificial graphite (AG), carbon black (CB), activated carbon (AC) and carbon nanotube (CN) on chalcopyrite bioleaching by mixed moderate thermophiles was comparatively investigated. In AC and AG added......
Trans. Nonferrous Met. Soc. China 28(2018) 2538-2544 Adsorption and leaching behaviors of chalcopyrite by two extreme thermophilic archaea Yu-ting LIANG, Jun-wei HAN, Chen-bing AI, Wen-qing QIN School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China Received 23 May 2018; accepted 27 November 2018 Abstract: The adsorption and leaching of chalcopyrite......
) and scanning electron microscopy(SEM).It is indicated that jarosite may not be responsible for hindered dissolution.The elemental sulfur layer on the surface of pyritic chalcopyrite residues is cracked.The compact surface layer of porphyry chalcopyrite may strongly hinder copper extraction.X-ray photoelectron spectroscopy(XPS) further confirms that the passivation layers of covellite,pyritic......
Trans. Nonferrous Met. Soc. China 27(2017) 406-412 Effect of pH values on extracellular protein and polysaccharide secretions of Acidithiobacillus ferrooxidans during chalcopyrite bioleaching Zhao... values on the extracellular protein and polysaccharide secretions of Acidithiobacillus ferrooxidans was comparatively investigated in different phases of bacterial growth during chalcopyrite bioleaching......
Effects of microorganisms on surface properties of chalcopyrite and bioleaching CHEN Ming-lian(陈明莲), ZHANG Lin(张 麟), GU Guo-hua(顾帼华), HU Yue-hua(胡岳华), SU Li-jun(苏丽君) School of Minerals...; Abstract: The alteration of surface properties of chalcopyrite after biological......
Trans. Nonferrous Met. Soc. China 31(2021) 2139-2152 pH-dependent leaching mechanism of carbonatitic chalcopyrite in ferric sulfate solution Kolela J NYEMBWE1,2, Elvis FOSSO-KANKEU1, Frans WAANDERS1...; 2. Department of Chemistry, School of Science and Technology, Cape Breton University, Canada Received 22 June 2020; accepted 4 March 2021 Abstract: The dissolution of a carbonatitic chalcopyrite......
Trans. Nonferrous Met. Soc. China 26(2016) 2220-2229 Effects of processing pH stimulation on cooperative bioleaching of chalcopyrite concentrate by free and attached cells Tang-jian PENG1, Li-juan... Received 3 May 2015; accepted 4 May 2016 Abstract: In order to investigate the effects of processing pH stimulation on bioleaching of chalcopyrite by moderate thermophiles, copper leaching rates......
The selective effect of food-grade guar gum on chalcopyrite-monoclinic pyrrhotite separation using mixed aerofloat(CSU11) as collectorXiong Chen1,Guo-hua Gu1,Li-juan Li1,Ren-feng Zhu1,21. School of Minerals Processing and Bioengineering, Central South University2. Zhaojin Mining Industry Company Limited摘 要:The flotation separation of chalcopyrite from......
of the flotation processes with two pulp densities of 25 wt% and 30 wt%. The major copper-bearing minerals identified by microscopic analysis of the concentrate samples included chalcopyrite(56.2 wt%), chalcocite... for chalcopyrite as the main copper mineral in the ore sample. The recovery rate and the grade in the concentrates were enhanced with increasing chalcopyrite particle size. Chalcopyrite particles with a d80......
Trans. Nonferrous Met. Soc. China 25(2015) 2725-2733 Surface species of chalcopyrite during bioleaching by moderately thermophilic bacteria Hong-bo ZHAO1,2, Jun WANG1,2, Wen-qing QIN1,2, Xi-hua...) analyses were carried out to investigate the surface species and interfacial reactions during bioleaching of chalcopyrite by different strains of moderately thermophilic bacteria (45 °C). Results show......
