Enriching Indium Using Neutralization from Solution Bearing Indium

An experimentation project has been put forward to enrich indium from sulfuric acid leaching solution bearing high content of indium: preneutralization using calcine---reduction using zinc sulfide concentrate---neutralization using limestone for precipitating indium, and ascertained optimal dosage of reagent in every procedure through experiment under certain condition: the dosage of calcine is 1.3 times of theoretic value, the dosage of zinc sulfide mineral concentrate is 2.2～2.3 times of theoretic value, the dosage of limestone is double of theoretic value. On this optimal condition, the straight recovery rate of indium is more than 97%, and the content of indium sediment from precipitating is more than 0.1%.

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Direct sulfuric acid leaching of zinc sulfide concentrate using ozone as oxidant under atmospheric pressure

Minerals & Metallurgical Processing ◽

10.19150/mmp.8462 ◽

2018 ◽

Vol 35 (3) ◽

pp. 133-140 ◽

Cited By ~ 1

Author(s):

M.Z. Mubarok ◽

K. Sukamto ◽

Z.T. Ichlas ◽

A.T. Sugiarto

Keyword(s):

Sulfuric Acid ◽

Zinc Sulfide ◽

Atmospheric Pressure ◽

Acid Leaching ◽

Sulfuric Acid Leaching ◽

Sulfide Concentrate

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Removal of Fe(III) from sulfuric acid leaching solution of phosphate ores with bisphosphonic acids

Hydrometallurgy ◽

10.1016/j.hydromet.2021.105799 ◽

2021 ◽

pp. 105799

Author(s):

Chengjin Xu ◽

Ling Li ◽

Miaomiao Zhang ◽

Xiao Meng ◽

Xiujing Peng ◽

...

Keyword(s):

Sulfuric Acid ◽

Acid Leaching ◽

Sulfuric Acid Leaching ◽

Leaching Solution ◽

Bisphosphonic Acids ◽

Phosphate Ores

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Experimental Study on Sulfuric Acid Leaching Behavior of Chromite with Different Temperature

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.361-363.628 ◽

2011 ◽

Vol 361-363 ◽

pp. 628-631 ◽

Cited By ~ 4

Author(s):

Cheng Jun Liu ◽

Jie Qi ◽

Mao Fa Jiang

Keyword(s):

Sulfuric Acid ◽

Acid Leaching ◽

Raw Material ◽

Leaching Rate ◽

Sulfuric Acid Leaching ◽

Leaching Process ◽

Pollution Problem ◽

Environmental Pollution Problem ◽

Leaching Solution ◽

Leaching Residue

Utilizing Pakistan chromite as raw material, the rapid leaching of chromium and iron could be realized by the sulfuric acid leaching process on the condition of atmospheric pressure and the addition of oxidant A. And the leaching rate of chromium and iron would be 98.5% and 71.9%, respectively. The sulfuric acid leaching processes with different temperature were systematically studied by chemical analysis and phase analysis. The results showed that, with the increase of reaction temperature, the leaching rate of chromium would increase gradually, but the leaching rate of iron increased at first and then decreases and reached its maximum at 140°C. When the temperature > 160°C, the phases of the leaching residue were magnesium iron silicate and a few of silica, no chromohercynite, chrompicotite and magnesioferrite existed in the chromite. The leaching solution of sulfuric acid leaching process could be used for preparing the basic chrome sulfate, and there is no Cr6+ in the leaching residue and solution. The results would provide theoretical guidance for solving environmental pollution problem of Cr6+ in traditional chromate production process.

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Factors on Leaching Zinc and Copper from Zinc Leach Residue

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.633.169 ◽

2014 ◽

Vol 633 ◽

pp. 169-172

Author(s):

Li Jiao Yang ◽

Nan Chun Chen ◽

Xia Ping Zhong ◽

Jun Gao ◽

Yao Xiu Lang ◽

...

Keyword(s):

Sulfuric Acid ◽

Zinc Sulfide ◽

Zinc Sulfate ◽

Acid Leaching ◽

Ion Concentration ◽

Leach Residue ◽

Sulfuric Acid Leaching ◽

Edta Titration ◽

Solid Ratio ◽

Copper And Zinc

It is found that cuprous sulfite, zinc sulfate and zinc sulfide were the main phases of copper and zinc in zinc leach residue, through analyzing its composition and phase characteristics by XRF and XRD. The method that cooperate sulfuric acid leaching with oxidant was chosen. 60 g/L H2SO4 at 60 °C for 2 h with 4% KMnO4 and liquid/solid ratio of 5..1, 84.29 % of Cu and 92.02 % of Zn are extracted. The ion concentration of copper and zinc are tested by UV-VIS spectrophotometer and EDTA titration respectively. The results show that the amount of acid is sufficient for leaching at the condition of 60 g/L H2SO4 and liquid/solid ratio of 5..1. At the same time, copper change from low valence into high valence after adding KMnO4 which strengthen the leaching, and the chemical reaction can reach balance at 60 °C for 2 h. This method has good extraction effect on copper and zinc.

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