Reductive leaching of indium-bearing zinc residue in sulfuric acid using sphalerite concentrate as reductant

2016 ◽  
Vol 161 ◽  
pp. 102-106 ◽  
Author(s):  
Fan Zhang ◽  
Chang Wei ◽  
Zhigan Deng ◽  
Xingbin Li ◽  
Cunxiong Li ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Reductive Leaching

scholarly journals Selective Recovery of Manganese from Anode Sludge Residue by Reductive Leaching

2020 ◽  
Vol 4 (2) ◽  
pp. 40
Author(s):  
Toni Kauppinen ◽  
Tuomas Vielma ◽  
Justin Salminen ◽  
Ulla Lassi
Keyword(s):  
Hydrogen Peroxide ◽  
Sulfuric Acid ◽  
High Selectivity ◽  
Sulfate Solution ◽  
Correct Choice ◽  
Manganese Sulfate ◽  
Solid Residue ◽  
Reductive Leaching ◽  
Novel Method ◽  
Leaching Residue

Manganese-containing anode sludge is a common side-product in the electrowinning of zinc. The anode sludge consists mainly of oxidized manganese, but also lesser amounts of lead, calcium, and other minor metals. The impurities present in the anode sludge mandate new recycling strategies for its efficient use. This work demonstrates a novel method for selective manganese recovery from lead- and calcium-bearing manganese oxide solid residue. Leaching with sulfuric acid in the presence of a selected reducing agent, such as hydrogen peroxide or citric acid, yields a concentrated MnSO4 solution with high selectivity over calcium and lead. Manganese yields up to 98% can be obtained. Minimization of calcium and lead in final manganese product can be accomplished with the correct choice of leaching conditions. Alongside manganese sulfate solution, leaching residue with high content of lead and silver was also formed.

scholarly journals Selective reductive leaching of cobalt and lithium from industrially crushed waste Li-ion batteries in sulfuric acid system

2018 ◽  
Vol 76 ◽  
pp. 582-590 ◽  
Author(s):  
Chao Peng ◽  
Joseph Hamuyuni ◽  
Benjamin P. Wilson ◽  
Mari Lundström
Keyword(s):  
Sulfuric Acid ◽  
Acid System ◽  
Li Ion Batteries ◽  
Reductive Leaching ◽  
Li Ion

scholarly journals Recovery of Co, Li, and Ni from Spent Li-Ion Batteries by the Inorganic and/or Organic Reducer Assisted Leaching Method

Minerals ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 555 ◽  
Author(s):  
Weronika Urbańska
Keyword(s):  
Sulfuric Acid ◽  
Lithium Ion Batteries ◽  
Laboratory Experiments ◽  
Glutaric Acid ◽  
Lithium Ion ◽  
Reducing Agent ◽  
Li Ion Batteries ◽  
Reductive Leaching ◽  
Li Ion ◽  
H2o2 Solution

The battery powder (anodic and cathodic mass) manually separated from spent Li-ion batteries used in laptops was subjected to acidic reductive leaching to recover the Co, Li, and Ni contained in it. In the laboratory experiments, 1.5 M sulfuric acid was used as the leaching agent and the reducing agents were 30% H2O2 solution or/and glutaric acid. Glutaric acid is a potential new reducing agent in the leaching process of spent lithium-ion batteries (LIBs). The influence of the type of the used reducer on obtained recovery degrees of Co, Li, and Ni as well as the synergism of the two tested reducing compounds were analyzed. As a result, it was determined that it is possible to efficiently hydrometallurgically separate Co, Li, and Ni from battery powder into solutions. The highest recovery degrees of the investigated metals (Co: 87.85%; Li: 99.91%; Ni: 91.46%) were obtained for samples where two reducers, perhydrol and glutaric acid, were added, thus confirming the assumed synergic action of H2O2 and C5H8O4 in a given reaction environment.

Recovery of Nickel and Cobalt from Dimethyldithiocarbamate Precipitation of Pyrolusite Leaching Process

2013 ◽  
Vol 634-638 ◽  
pp. 258-262 ◽  
Author(s):  
Hai Feng Su ◽  
Bo Ji Li ◽  
Qing Lu ◽  
Yan Xuan Wen ◽  
Jing Su
Keyword(s):  
Sulfuric Acid ◽  
Nitric Acid ◽  
Acid Leaching ◽  
Sulfuric Acid Leaching ◽  
Leaching Process ◽  
Sulfuric Acid Medium ◽  
Cobalt Recovery ◽  
Reductive Leaching ◽  
High Nickel ◽  
Leaching Condition

Dimethyldithiocarbamate precipitation is a secondary resource containing nickel and cobalt, which are formed by adding sodium dimethyldithiocarbamate to purify the neutralized filtrate of pyrolusite reductive leaching process. The extraction of nickel and cobalt from dimethyldithiocarbamate precipitation was investigated using nitric acid as oxidant in dilute sulfuric acid medium in this paper. The effects of concentrations of nitric acid and sulfuric acid, leaching temperature as well as reaction time were discussed. The results showed that high nickel and cobalt recovery could be obtained by analyzing the leaching efficiencies of nickel and cobalt during the leaching process. The optimal leaching condition was 1.47 mol/L H2SO4 and 1.16 mol/L HNO3 for 30 min at 45 °C while using particles smaller than 0.420 mm. And the leaching efficiencies were 98% for Co and 95% for Ni, respectively.

Reductive leaching of manganese from low-grade manganese dioxide ores using corncob as reductant in sulfuric acid solution

2010 ◽  
Vol 100 (3-4) ◽  
pp. 157-160 ◽  
Author(s):  
Xike Tian ◽  
Xiaoxia Wen ◽  
Chao Yang ◽  
Yujun Liang ◽  
Zhengbang Pi ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Acid Solution ◽  
Manganese Dioxide ◽  
Sulfuric Acid Solution ◽  
Low Grade ◽  
Reductive Leaching

Reductive leaching of indium-bearing zinc ferrite in sulfuric acid using sulfur dioxide as a reductant

2019 ◽  
Vol 186 ◽  
pp. 192-199 ◽  
Author(s):  
Yangyang Fan ◽  
Yan Liu ◽  
Liping Niu ◽  
Tingle Jing ◽  
Weiguang Zhang ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Sulfur Dioxide ◽  
Zinc Ferrite ◽  
Reductive Leaching
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