Purification of an ammoniacal zinc leach liquor using a rotating zinc disc after copper solvent extraction

1989 ◽  
Vol 25 (1-2) ◽  
pp. 79-85 ◽  
Author(s):  
G.Roy Chaudhury ◽  
I.N. Bhattacharya
Keyword(s):  
Solvent Extraction ◽  
Leach Liquor ◽  
Copper Solvent Extraction

Effects of Copper Extraction-Stripping Loops on Entrainment in Aqueous Raffinate

2014 ◽  
Vol 908 ◽  
pp. 18-21
Author(s):  
Yan Jun Liu ◽  
Xiao Rong Liu ◽  
Hui Li ◽  
Yong Sheng Li ◽  
Qing Li ◽  
...  
Keyword(s):  
Surface Tension ◽  
Solvent Extraction ◽  
Early Stage ◽  
Organic Chemical ◽  
Copper Extraction ◽  
Organic Chemicals ◽  
Stabilization Mechanism ◽  
Absolute Value ◽  
Copper Solvent Extraction ◽  
Average Size

Effects of extraction-stripping loops of organic phase on organic chemical entrainment in the aqueous raffinate in copper solvent extraction were studied in this paper. Results demonstrated that the total amount of organic chemicals lost in the aqueous raffinate decreased with the increase of times of extraction-stripping loops but reached largest at third loop. Entrainment was the dominate way of organic chemicals losing in the aqueous raffinate at early stage of the loops. The formation of entrainment and its stabilization mechanism was also studied. The average size of entrained droplet trended to increase with extraction-stripping loops increasing. Meanwhile, the absolute value of zeta potential trended to decrease. The surface tension of the aqueous raffinate increased after reaching the minimum value 41.3 mN/m at the 3rd loop. It showed that the formation of entrained droplets and its stability were mainly affected by the surface tension of aqueous raffinate.

Selective recovery of rhenium from molybdenite flue-dust leach liquor using solvent extraction with TBP

2018 ◽  
Vol 191 ◽  
pp. 116-121 ◽  
Author(s):  
Humma Akram Cheema ◽  
Sadia Ilyas ◽  
Shafaq Masud ◽  
Muhammad Ahmad Muhsan ◽  
Iftikhar Mahmood ◽  
...  
Keyword(s):  
Solvent Extraction ◽  
Leach Liquor ◽  
Selective Recovery ◽  
Flue Dust

scholarly journals A Monitoring System for the Copper Solvent Extraction - Electrowinning Process

2003 ◽  
Vol 36 (24) ◽  
pp. 257-262
Author(s):  
Ville Suontaka ◽  
Kari Saloheimo ◽  
Tom Marttila ◽  
Sirkka-Liisa Jämsä-Jounela
Keyword(s):  
Solvent Extraction ◽  
Monitoring System ◽  
Copper Solvent Extraction

Diversity of Bioleaching Microorganisms in Interfacial Emulsion of Copper Solvent Extraction

2015 ◽  
Vol 1130 ◽  
pp. 55-58
Author(s):  
Xiao Rong Liu ◽  
Chang Su ◽  
Dao Jie Chi ◽  
Xue Song Zheng ◽  
Hua Long Yu ◽  
...  
Keyword(s):  
Solvent Extraction ◽  
16S Rrna ◽  
Acidithiobacillus Ferrooxidans ◽  
Gene Sequencing ◽  
16S Rrna Gene Sequencing ◽  
Extraction Process ◽  
Copper Extraction ◽  
Rrna Gene ◽  
Copper Solvent Extraction ◽  
Rrna Gene Sequencing

In the bioleaching - solvent extraction - electrowinning practices for copper extraction, the solvent extraction process is used to enrich the copper in the leachate to a high lever to make the sequent electrowinning process possible. O/W type of interfacial emulsion always forms at the interface between organic phase and aqueous phase in the solvent extraction practices. Diversified microorganisms were discovered by microscope growing in the interface emulsion of copper solvent extraction. The diversity of them was analyzed by using 16s rRNA gene sequencing. It was indicated that there exist seven categories of bacteria in the interface emulsion, among which common bioleaching bacteria, such as Leptospirillum sp.,Acidithiobacillus ferrooxidans, Metallibacterium sp., are included. The dominant strains are Leptospirillum sp. E4-L9 and Acidithiobacillus ferrooxidans ATCC 23270, which account up to 40.48 % and 38.1 %, respectively. It was uncovered that bioleaching bacteria can be intercepted by interfacial emulsion of solvent extraction to make their population in the raffinate lower and the efficiency of bioleaching decrease consequently.

Solvent extraction of Fe(III) from the chloride leach liquor of low grade iron ore tailings using Aliquat 336

2011 ◽  
Vol 108 (1-2) ◽  
pp. 93-99 ◽  
Author(s):  
R.K. Mishra ◽  
P.C. Rout ◽  
K. Sarangi ◽  
K.C. Nathsarma
Keyword(s):  
Solvent Extraction ◽  
Iron Ore ◽  
Leach Liquor ◽  
Low Grade ◽  
Aliquat 336 ◽  
Iron Ore Tailings

Attachment of Acidithiobacillus ferrooxidans and Bioleaching of Chalcopyrite under Influence of Organic Substances Associated with Copper Solvent Extraction

2017 ◽  
Vol 262 ◽  
pp. 75-78 ◽  
Author(s):  
Xiao Rong Liu ◽  
Hao Zhang ◽  
Hua Long Yu ◽  
Yan Hao Zhu
Keyword(s):  
Solvent Extraction ◽  
Acidithiobacillus Ferrooxidans ◽  
Low Grade ◽  
Organic Substances ◽  
Copper Solvent Extraction ◽  
Influence Of Solvent

Small quantities of organic substances are inevitably entrained and dissolve in the aqueous raffinate during a copper solvent extraction (SX) operation. These organic substances contaminate the bioleaching environment through the loopback of the raffinate. The attachment of cells of Acidithiobacillus ferrooxidans (At. ferrooxidans) to the low grade chalcopyrite ores and the bioleaching of the ores under the influence of solvent extraction organic substances were investigated. The results showed that the cells of At. ferrooxidans were apt to attach on the SX organics-contaminated chalcopyrite ores with an adsorption ratio of about 83%, larger than that of 44% on the uncontaminated ores as a control. However, the bioleaching efficiency decreased from 25% to 15% under the influence of the SX organic substances. Obviously, an improvement of the cells attachment did not improve the bioleaching efficiency of the low grade chalcopyrite ores by At. ferrooxidans in the present of the SX organic substances. The SX organic substances impacted the metabolism of At.ferrooxidans and their bioleaching ability.

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