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such as simple operation, low operating cost, low energy input and friendly towards the environment [1, 2]. There are many studies related to the bioleaching of sulfide copper ores with autotrophic bacteria such as A. ferrooxidans and L. thiooxidans [3–5]. For the past few years, low grade copper ores, with high contents of oxide ore and carbonate gangue, have gradually accounted for a high proportion......
Dissolution kinetics of low grade complex copper ore in ammonia-ammonium chloride solution LIU Wei(刘 维), TANG Mo-tang(唐谟堂), TANG Chao-bo(唐朝波), HE Jing(何 静), YANG Sheng-hai(杨声海),YANG Jian-guang(杨建... kJ/mol. An equation was also proposed to describe the leaching kinetics. Key words: leaching kinetics; ammonia; ammonium chloride; low grade copper ore ......
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sulfide ores is of important significance for the treatment of the minerals in China[1]. The bioleaching of low-grade and complex sulfide ores is characterized with low leaching rate and low metal... in research on the community structure and the functions of various bioleaching bacteria. 4 Conclusions More than 70% of non-ferrous metal mineral resources in China are low-grade and complex sulfide ores......
enclosed by sulfide ores. Primary gold-bearing sulfide ore is fine-grained pyrite and arsenopyrite. The paper describes the effects of ratios and dosage of activators and collectors on the recovery...Optimization and mechanism of gold-bearing sulfide flotationZhong-Mei Sun1,2,Chun-Bao Sun1,Ji-Zhen Wang3,Wan-Zhong Yin41. School of Civil and Environmental Engineering, University of Science......
Trans. Nonferrous Met. Soc. China 22(2012) 2822-2830 Leaching kinetics of low-grade copper ore containing calcium-magnesium carbonate in ammonia-ammonium sulfate solution with persulfate LIU..., Jishou University, Jishou 416000, China Received 30 September 2011; accepted 23 December 2011 Abstract: The leaching kinetics of copper from low-grade copper ore was investigated in ammonia-ammonium......
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. On the other hand, the impurity content, especially arsenic grade, in copper ores has tended to increase year by year, and therefore the arsenic grade in copper concentrates obtained from copper ores...Trans. Nonferrous Met. Soc. China 31(2021) 1103-1112 Separation and recovery of copper in Cu-As-bearing copper electrorefining black slime by oxidation acid leaching and sulfide precipitation Mei......
and precious metals from low-grade ores, and for remediating acidic, metal-rich wastewaters that drain from both operating and abandoned mine sites. Biological systems offer a number of environmental... to as "biomining"[6]. The advantages of bioprocessing of ores and concentrates over more conventional approaches such as pyrometallurgy include the potential for processing low-grade deposits and those......
