ГЛАВНАЯ zijinshan bioheapleaching 2012

zijinshan bioheapleaching 2012

Biohydrometallurgy: From the Zijinshan Experience to ...

The distribution and diversity of bacterial community in Zijinshan commercial non-aeration copper bioheapleaching system operated at pH 0.8 for three years were investigated. The 24 meters high ...

Modeling heap biooxidation of arsenic-bearing gold ore ...

To design heap biooxidation process, it is necessary to understand its internal rules. The heap biooxidation of gold ore from Anhui province was researched in this study. The results showed that the main microorganisms in the heap were A. ferrooxidans, F. acidiphilum and L. ferrodiazotrophum. Under their combined action, gold leaching extent rose from 35.62% to 78.08% in 80 d. Boltzmann …

Why Zijinshan copper bioheapleaching plant works ...

Zijinshan commercial bioheapleaching–SX–EW plant has been in operation since December 2005. 13.9 million tonnes of low grade copper sulfide ore (Cu 0.38%) has been leached efficiently with an annual recovery of 80% in this distinct leaching system with high iron concentration, high temperature, high acidity and low microbial activity.This paper is to study the key factors which …

Metallurgical sludges, bio/leaching and heavy metals ...

representation of bioheap leaching process, (b) bioleaching plant in Zijinshan copper mine, China (Reinman et al., 2006), (c) bioheapleaching plant in Talvivara mining company, Finland (Reikkola-Vanhanen, 2010) and (d) bioheapleaching plant in Kasese mine, Uganda (Gahan et al., 2012…

Effect of Nitric Oxide on the Secondary Metabolites of ...

In this paper, the effect of nitric oxide (NO) on the secondary metabolites of Taxus chinensis var. mairei under elevated UV-B radiation was studied. The 5-year-old seedlings were used as test materials. The sodium nitroprusside (SNP) was as the NO donor and Carboxy-PTIO potassium salt (cPTIO) as the NO scavenger. The results showed that the SNP, UV, UV-B+SNP treatments significantly increased ...

,。. 。. 30、。. 《》、,《》《》。. : 2000 ...

Fengqiao C. - | | LinkedIn

2012 7 - 2012 7 1 . Student Leader TED Conferences (Tedx @Zijinshan) 2013 7 - 2013 8 2 . ...

Insights into Bacterial Community Structure of a ...

The distribution and diversity of bacterial community in Zijinshan commercial non-aeration copper bioheapleaching system operated at pH 0.8 for three years were investigated. The 24 meters high ...

Linking leach chemistry and microbiology of low-grade ...

The effects of temperature on chalcocite/pyrite oxidation and the microbial population in the bioleaching columns of a low-grade chalcocite ore were investigated in this study. Raffinate from the industrial bioleaching heap was used as an irrigation solution for columns operated at 20, 30, 45, and 60°C. The dissolution of copper and iron were investigated during the bioleaching processes, and ...

Minerals | Free Full-Text | Leaching Chalcocite in ...

Chalcocite is the most abundant secondary copper sulfide globally, with the highest copper content, and is easily treated by conventional hydrometallurgical processes, making it a very profitable mineral for extraction. Among the various leaching processes to treat chalcocite, chloride media show better results and have a greater industrial boom. Chalcocite dissolution is a two-stage process ...

Visualization of flow behavior in ore-segregated packed ...

Ore particles, especially fine interlayers, commonly segregate in heap stacking, leading to undesirable flow paths and changeable flow velocity fields of packed beds. Computed tomography (CT), COMSOL Multiphysics, and MATLAB were utilized to quantify pore structures and visualize flow behavior inside packed beds with segregated fine interlayers. The formation of fine interlayers was ...

Biohydrometallurgy '12

11.10 Why Zijinshan copper bioheapleaching plant works ef ficiently at low microbial activity – a study of leaching kinetics of copper sulfide and its implications R.M. Ruan, G. Zou, S.P. Zhong, S.J. Zhao, B. Chan (Zijin Mining Group Co. Ltd, China) and D.Z. Wang (Central South University, China)

--UCAS

（1）Why Zijinshan copper bioheapleaching plant works efficiently at low microbial activity - study on leaching kinetics of copper sulfide and its implication

Copper Bioleaching G-2.pdf | Copper | Mining

Copper Bioleaching G-2.pdf - Free download as PDF File (.pdf), Text File (.txt) or read online for free.

Metals and minerals as a biotechnology feedstock ...

Chemolithoautotrophs have evolved to oxidize inorganic materials and some of these bacteria, such as Acidithiobacillus spp. and Leptospirillum spp., are exploited in metal mining operations for increased leaching rates of metals from ores [7, 8, 9•].Given that the dimensions of a bioleaching heap can be as large as one trillion liters, it is thought that metal biomining with ...

smal factory cupper leaching - na-stawach.pl

Zijinshan commercial bioheapleaching–SX–EW plant has been in operation since December 2005. 13.9 million tonnes of low grade copper sulfide ore (Cu 0.38%) has been leached efficiently with an annual recovery of 80% in this distinct leaching system with high iron concentration, high temperature, high acidity and low microbial activity.

- USTB

Why Zijinshan copper bioheapleaching plant works efficiently at low microbial activity——study on leaching kinetics of copper sulfides and its implications. Miner Eng, 2013, 48: 36 doi: 10.1016/j.mineng.2013.01.002

Metals | Free Full-Text | Gangues and Clays Minerals as ...

Why Zijinshan copper bioheapleaching plant works efficiently at low microbial activity—Study on leaching kinetics of copper sulfides and its implications. Miner. Eng. 2013, 48, 36–43.

Why Zijinshan copper bioheapleaching plant works ...

Zijinshan commercial bioheapleaching–SX–EW plant has been in operation since December 2005. 13.9 million tonnes of low grade copper sulfide ore (Cu 0.38%) has been leached efficiently with an annual recovery of 80% in this distinct leaching system with high iron concentration, high temperature, high acidity and low microbial activity.This paper is to study the key factors which influence ...

Minerals | Free Full-Text | Copper Bioleaching in China ...

Why Zijinshan copper bioheapleaching plant works efficiently at low microbial activity—Study on leaching kinetics of copper sulfides and its implications. Miner. Eng. 2013, 48, 36–43. [Google Scholar] Liu, X.Y.; Chen, B.W.; Wen, J.K. Dominance of Acidithiobacillus at ore surface of Zijinshan commercial low-grade copper bioleaching heap.

Renman RUAN | Professor (Full) | PhD | Chinese Academy …

January 2012 - July 2014. ... This paper discusses a case study on a bioheapleaching system operated commercially at Zijinshan copper plant in China, which applied bioheapleaching–SX (solvent ...

Proceedings of XXIV International Mineral Processing ...

336 Bioheapleaching Pilot Plant Tests on Nickel Sulphide Ore ... 357 Identification of a Acidthiobacillus Species Separated from the Mixed Microbial Populations in Zijinshan Copper Mine Bio-heap Leaching Plant by the Methods of PCR-16S rRNA Gene Sequence Analysis ... Zhong Guo Kuang Chan Zi Yuan Bao Gao 2012 $43.00. REE Characteristics of Early ...

4. Bioleaching process and commercial bioheap leaching ...

4. Bioleaching process and commercial bioheap leaching plants (a) schematic representation of bioheap leaching process, (b) bioleaching plant in Zijinshan copper mine, China (Reinman et …

Visualization of flow behavior in ore-segregated packed ...

Ore particles, especially fine interlayers, commonly segregate in heap stacking, leading to undesirable flow paths and changeable flow velocity fields of packed beds. Computed tomography (CT), COMSOL Multiphysics, and MATLAB were utilized to quantify pore structures and visualize flow behavior inside packed beds with segregated fine interlayers.

Industrial practice of a distinct bioleaching system ...

Comparing with other bioheapleaching plants worldwide (Brierley and Brierley, 2001, Domic, 2007), bioheapleaching at Zijinshan was facing special engineering challenges such as acid and iron accumulation in the solution system from the high content of pyrite and, high mean annual rainfall (1676.6 mm) concentrated from March to August. According ...

-,

·. ：. 2012.07: 2–3. isbn 978-7-80718-854-4. ^ 31,, 20080928. ^ . 85 .

Purple Mountain Observatory - Wikipedia

The Purple Mountain Observatory was established in 1934 funded by the Nationalist Government of the Republic of China and administered by Academia Sinica.The longtime director of the observatory from 1950 to 1984 was Chinese astronomer Zhang Yuzhe (, 1902–1986, also known as Y. C. Chang).. By the late 1980s, increasing light pollution in Nanjing meant Purple Mountain was no longer ...

The influence of micro-cracks on copper extraction by ...

Why Zijinshan copper bioheapleaching plant works efficiently at low microbial activity - study on leaching kinetics of copper sulfides and its implications Miner. Eng., 48 ( 2013 ), pp. 36 - 43

Minerals | Free Full-Text | Quantitative X-ray µCT ...

Why Zijinshan copper bioheapleaching plant works efficiently at low microbial activity—Study on leaching kinetics of copper sulfides and its implications. Miner. Eng. 2013, 48, 36–43.

Soil Mechanized Compaction Influenced on ... - Scientific.Net

In recent years, the mechanized soil compaction is becoming increasingly prominent problem with the rapid increase of agricultural mechanization level. The paper expounded that soil compaction influenced on soil environment including bulk density, hardness, porosity of soil, which resulted in soil structural characteristics change and soil quality degradation, it went against crops production.

Renman RUAN | Professor (Full) | PhD | Chinese Academy of ...

January 2012 - July 2014. ... This paper discusses a case study on a bioheapleaching system operated commercially at Zijinshan copper plant in China, which applied bioheapleaching–SX (solvent ...

Proscribing the "Spiritually Japanese": Nationalist ...

The Zijinshan photos were posted on Weibo and the public reaction against such young Chinese who style themselves Japanese – the "spiritually Japanese" (jingshen Ribenren, or jingRi ) – was fast and furious. A desire for retribution was widespread.

-- - ipe.cas.cn

8.Renman Ruan, Gang Zou, Shuiping Zhong, Zengling Wu, Brenda Chan, Dianzuo Wang, Why Zijinshan copper bioheapleaching plant works efficiently at low microbial activity – Study on leaching kinetics of copper sulfides and its implications.Minerals Engineering, 2013,(48):36-43