Research on Sulfur Conversion Behavior in Oxygen Pressure Acid Leaching Process of High Indium Sphalerite

2018 ◽  
pp. 199-208 ◽  
Author(s):  
Yan Liu ◽  
Yang-yang Fan ◽  
Jun-fu Qi ◽  
Lei Tian ◽  
Ting-an Zhang
Keyword(s):  
Oxygen Pressure ◽  
Acid Leaching ◽  
Leaching Process ◽  
Oxygen Pressure Acid Leaching ◽  
Pressure Acid Leaching

Oxygen Pressure Acid Leaching of Vanadium Slag

2011 ◽  
Vol 79 ◽  
pp. 242-247 ◽  
Author(s):  
Wang Zhong Mu ◽  
Ting An Zhang ◽  
Zhi He Dou ◽  
Guo Zhi Lü ◽  
Lan Hu ◽  
...  
Keyword(s):  
Oxygen Pressure ◽  
Acid Leaching ◽  
Leaching Rate ◽  
Vanadium Slag ◽  
Solid Ratio ◽  
Leaching Process ◽  
Oxygen Pressure Acid Leaching ◽  
Effects Of Temperature ◽  
Pressure Acid Leaching ◽  
Single Factor Experiment

Oxygen pressure acid leaching process was used to extract vanadium from vanadium slag (Panzhihua steelmaking plant of China). The single factor experiment was finished and the effects of temperature, leaching time, liquid to solid ratio, stirring speed, initial concentration of sulfuric acid, and were investigated on the leaching rate of vanadium, titanium and iron. The leachate and residue were characterized by ICP, XRF, XRD, SEM and EDX. The experiment results indicate when temperature is 140 °C, leaching time is 120 min, liquid to solid ratio is 20:1(ml:g), stirring speed is 500 rpm, initial acid concentration is 200 g/L, oxygen partial pressure is 0.5 MPa, and particle size is -0.075~+0.055 mm, leaching rate of vanadium is 97.89% and the content of vanadium in the residue is 0.586%. Leaching rate of titanium and iron is 12.78% and 94.45% respectively. Vanadium could be extracted effectively through the oxygen pressure acid leaching process.

Cu2+-catalyzed mechanism in oxygen-pressure acid leaching of artificial sphalerite

2020 ◽  
Vol 27 (7) ◽  
pp. 910-923
Author(s):  
Lei Tian ◽  
Ao Gong ◽  
Xuan-gao Wu ◽  
Yan Liu ◽  
Zhi-feng Xu ◽  
...  
Keyword(s):  
Oxygen Pressure ◽  
Acid Leaching ◽  
Oxygen Pressure Acid Leaching ◽  
Pressure Acid Leaching

Extracting vanadium from stone-coal by oxygen pressure acid leaching and solvent extraction

2010 ◽  
Vol 20 ◽  
pp. s118-s122 ◽  
Author(s):  
Zhi-gan DENG ◽  
Chang WEI ◽  
Gang FAN ◽  
Min-ting LI ◽  
Cun-xiong LI ◽  
...  
Keyword(s):  
Solvent Extraction ◽  
Oxygen Pressure ◽  
Acid Leaching ◽  
Stone Coal ◽  
Oxygen Pressure Acid Leaching ◽  
Pressure Acid Leaching

Oxygen pressure acid leaching of artificial sphalerite catalyzed by Fe3+/Fe2+ self-precipitation

2020 ◽  
Vol 27 (6) ◽  
pp. 1703-1713
Author(s):  
Lei Tian ◽  
Ao Gong ◽  
Xuan-gao Wu ◽  
Zhi-feng Xu ◽  
Ting-an Zhang ◽  
...  
Keyword(s):  
Oxygen Pressure ◽  
Acid Leaching ◽  
Oxygen Pressure Acid Leaching ◽  
Pressure Acid Leaching

scholarly journals Study on Ultrasonically-Enhanced Sulfuric Acid Leaching of Nickel from Nickel-Containing Residue

Crystals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 810
Author(s):  
Zhanyong Guo ◽  
Ping Guo ◽  
Guang Su ◽  
Fachuang Li
Keyword(s):  
Sulfuric Acid ◽  
Acid Leaching ◽  
Ultrasonic Waves ◽  
Sulfuric Acid Leaching ◽  
Solid Product ◽  
Leaching Process ◽  
Diffusion Controlled ◽  
Extraction Degree ◽  
Ultrasonic Conditions ◽  
Complex Nickel

In this paper, nickel-containing residue, a typical solid waste produced in the battery production process, was used to study the cavitation characteristics of ultrasonic waves in a liquid–solid reaction. The ultrasonically-enhanced leaching technology for multicomponent and complex nickel-containing residue was studied through systematic ultrasonic-conventional comparative experiments. An ultrasonic leaching kinetics model was established which provided reliable technological guidance and basic theory for the comprehensive utilization of nickel-containing residue. In the study, it was found that ultrasonically-enhanced leaching for 40 min obtained the same result as conventional leaching for 80 min, and the Ni extraction degree reached more than 95%. According to the kinetic fitting of the leaching process, it was found that the sulfuric acid leaching process belonged to the diffusion-controlled model of solid product layers under conventional and ultrasonic conditions, and the activation energy of the reaction was Ea1 = 17.74 kJ/mol and Ea2 = 5.04 kJ/mol, respectively.

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