Investigation of Bioleaching of a Low Grade Nickel-Cobalt-Copper Sulfide Ore with High Magnesium as Olivine and Serpentine from Lao

2013 ◽  
Vol 825 ◽  
pp. 396-400 ◽  
Author(s):  
Bo Wei Chen ◽  
Liu Lu Cai ◽  
Biao Wu ◽  
Xue Liu ◽  
Jian Kang Wen
Keyword(s):  
Copper Sulfide ◽  
Nickel Sulfide ◽  
Low Grade ◽  
Nickel Cobalt ◽  
Nickel Silicate ◽  
Copper Leaching ◽  
Sulfide Ore ◽  
Initial Ph ◽  
Copper Sulfide Ore ◽  
Cobalt Copper

Shake flask bioleaching of a low-grade nickel-cobalt-copper sulfide ore from Lao was investigated to test the technical feasibility to recovery metals from this ore. The mineralogical results indicated that the valuable minerals were disseminated finely and the ore had a low content of sulfur and high content of iron and magnesium, which was very harmful for bioleaching. The effects of different parameters such as the amount of acid addition, inoculation volume, initial pH, temperature and leaching time on the bioleaching performance of the ore were evaluated after pre-leaching with dilute acid. The results showed that nickel, cobalt, copper leaching rates reached 81.61%, 80.75%, 70.97% at 33 °C and 83.40%, 82.13%, 70.34% at 45 °C. The mineralogical analysis of the leaching residues revealed that the leaching rate of nickel sulfide was more than 92% and the unleached nickel was mainly present as nickel silicate.

Effect of water quality on the leaching of a low-grade copper sulfide ore

2014 ◽  
Vol 58 ◽  
pp. 39-51 ◽  
Author(s):  
H.R. Watling ◽  
D.W. Shiers ◽  
J. Li ◽  
N.M. Chapman ◽  
G.B. Douglas
Keyword(s):  
Water Quality ◽  
Copper Sulfide ◽  
Low Grade ◽  
Effect Of Water ◽  
Sulfide Ore ◽  
Copper Sulfide Ore

scholarly journals Dynamic of active microorganisms inhabiting a bioleaching industrial heap of low-grade copper sulfide ore monitored by real-time PCR and oligonucleotide prokaryotic acidophile microarray

2009 ◽  
Vol 2 (6) ◽  
pp. 613-624 ◽  
Author(s):  
Francisco Remonsellez ◽  
Felipe Galleguillos ◽  
Mercedes Moreno-Paz ◽  
Víctor Parro ◽  
Mauricio Acosta ◽  
...  
Keyword(s):  
Real Time ◽  
Real Time Pcr ◽  
Copper Sulfide ◽  
Low Grade ◽  
Sulfide Ore ◽  
Copper Sulfide Ore

Bioleaching of low-grade copper sulfide ore by extremely thermoacidophilic consortia at 70 °C in column reactors

2020 ◽  
Vol 27 (5) ◽  
pp. 1404-1415
Author(s):  
Chen-bing Ai ◽  
Yu-ting Liang ◽  
Guan-zhou Qiu ◽  
Wei-min Zeng
Keyword(s):  
Copper Sulfide ◽  
Low Grade ◽  
Sulfide Ore ◽  
Copper Sulfide Ore

scholarly journals Accelerating Copper Leaching from Sulfide Ores in Acid-Nitrate-Chloride Media Using Agglomeration and Curing as Pretreatment

Minerals ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 250 ◽  
Author(s):  
Pía C. Hernández ◽  
Junior Dupont ◽  
Osvaldo O. Herreros ◽  
Yecid P. Jimenez ◽  
Cynthia M. Torres
Keyword(s):  
Copper Sulfide ◽  
Chloride Concentration ◽  
Copper Extraction ◽  
Copper Dissolution ◽  
Three Samples ◽  
Copper Leaching ◽  
Sulfide Ore ◽  
Higher Temperature ◽  
Pretreatment Conditions ◽  
Copper Sulfide Ore

This work investigates the effect of an agglomeration and curing pretreatment on leaching of a copper sulfide ore, mainly chalcopyrite, using mini-columns in acid-nitrate-chloride media. Ten pretreatment tests were conducted to evaluate different variables, namely the addition of nitrate as NaNO3 (11.7 and 23.3 kg/ton), chloride as NaCl (2.1 and 19.8 kg/ton), curing time (20 and 30 days) and repose temperature (25 and 45 °C). The optimum copper extraction of 58.6% was achieved with the addition of 23.3 kg of NaNO3/ton, 19.8 kg of NaCl/ton, and after 30 days of curing at 45 °C. Under these pretreatment conditions, three samples of ore were leached in mini-columns. The studied parameters were temperature (25 and 45 °C) and chloride concentration (20 and 40 g/L). The optimum copper extraction of 63.9% was obtained in the mini-column leaching test at 25 °C, with the use of 20 g/L of chloride. A higher temperature (45 °C) and a higher chloride concentration (40 g/L) negatively affected the extraction. The pretreatment stage had favorable effects, in terms of accelerating copper dissolution and improving leaching of copper sulfide ore in acid-nitrate-chloride media. Waste salts from caliche industry and waste brine from reverse osmosis can be used for providing the nitrate and chloride media.

Experimental Study of Floatation on Non-Independent Copper Oxide Ore from Jilin Province in China

2012 ◽  
Vol 581-582 ◽  
pp. 851-855
Author(s):  
Rong Dong Deng ◽  
Quan Jun Liu ◽  
Xiao Feng Yang ◽  
Ting Hu ◽  
Feng Hong Ye
Keyword(s):  
Copper Oxide ◽  
Copper Sulfide ◽  
Jilin Province ◽  
High Grade ◽  
High Recovery ◽  
Copper Ore ◽  
Sulfide Ore ◽  
Mineralogical Study ◽  
Oxide Minerals ◽  
Copper Sulfide Ore

Through the processing of mineralogical study on a copper ore from Jilin province in China, it found that the copper exist mostly with the form of chalcopyrite, and others exist with the form of copper oxide minerals which with complex ingredient. The copper oxide minerals are due to the altered of the edge of chalcopyrite, and have not formed the independent copper oxide ore. It belongs to unconventional hard-to-beneficiate copper ore. Coarse grinding fineness and bulk floatation was used to recover the copper oxide ore and copper sulfide ore by using amino double phosphoric acid and butylamine dithiophosphate as the collector. This process was similar to the carrier flotation and achieved an effective processing of the copper oxide ore and obtained a high-grade copper concentrate assaying 15.8% with a high recovery of 82.4%.

Leaching of a low-grade, copper–nickel sulfide ore

2009 ◽  
Vol 98 (1-2) ◽  
pp. 66-72 ◽  
Author(s):  
M. Maley ◽  
W. van Bronswijk ◽  
H.R. Watling
Keyword(s):  
Nickel Sulfide ◽  
Low Grade ◽  
Copper Nickel ◽  
Sulfide Ore

Characterization of microbial community in industrial bioleaching heap of copper sulfide ore at Monywa mine, Myanmar

2016 ◽  
Vol 164 ◽  
pp. 355-361 ◽  
Author(s):  
Yan Jia ◽  
Heyun Sun ◽  
Defang Chen ◽  
Hongshan Gao ◽  
Renman Ruan
Keyword(s):  
Microbial Community ◽  
Copper Sulfide ◽  
Sulfide Ore ◽  
Copper Sulfide Ore
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