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J. Cent. South Univ. (2012) 19: 71-76 DOI: 10.1007/s11771-012-0974-9 Oxygen pressure acid leaching of Gacun complex Cu concentrates XU Bin(徐斌)1, 2, ZHONG Hong(钟宏)3, JIANG Tao(姜涛)1 1. School... with high contents of Pb, Zn, Ag, etc by oxygen pressure acid leaching was studied. It is unusual that tetrahedrite, whose treatment was rarely studied, is the primary copper mineral of the concentrates......
Extracting vanadium from stone-coal by oxygen pressure acid leaching and solvent extraction DENG Zhi-gan(邓志敢), WEI Chang(魏 昶), FAN Gang(樊 刚), LI Min-ting(李旻廷), LI Cun-xiong(李存兄), LI... ____________________________________________________________________________________________ Abstract: Vanadium extraction from stone-coal was investigated by oxygen pressure acid leaching and solvent extraction......
temperature 150 ℃, oxygen partial pressure 1 MPa, additive amount 1%, solid-to-liquid ratio 1:4, leaching time 2 h, initial sulfuric acid concentration 15%, and particle size... Pressure acid leaching of zinc sulfide concentrate GU Yan(古 岩), ZHANG Ting-an(张廷安), LIU Yan(刘 燕), MU Wang-zhong(牟望重), ZHANG Wei-guang(张伟光),DOU Zhi-he(豆志河), JIANG Xiao-li(蒋孝丽) Key......
of vanadium can reach above 90%. Air replacing oxygen is completely feasible. The impurity metals can dissolve into solution in different degrees. Key words: pressure acid leaching; black shale; vanadium... the pressure acid leaching of Egyptian black shale of the Quseir-Safaga region and obtained a vanadium recovery of up to 95% using 10% H2SO4 solution with an oxygen partial pressure of 8×10 Pa for 40......
; Abstract: Kinetic process of oxidative leaching of chalcopyrite in chloride acid hydroxide medium under oxygen pressure and low temperature was investigated. The effect on leaching... under low oxygen pressure and low temperature was studied by XIE et al[14] and QIU et al[15]. In this paper, kinetic process of oxidative leaching of chalcopyrite in chloride acid hydroxide medium......
J. Cent. South Univ. (2020) 27: 1703-1713 DOI: https://doi.org/10.1007/s11771-020-4401-3 Oxygen pressure acid leaching of artificial sphalerite catalyzed by Fe3+/Fe2+ self-precipitation TIAN Lei(田磊... Abstract: The mechanism of oxygen pressure acid leaching of sphalerite catalyzed by Fe3+/Fe2+ self-precipitation was investigated in this study. Artificial sphalerite was fabricated with varying amounts......
: the liquid to solid ratio (mL/g) of 5:1, the leaching temperature of 453 K, the retention time of 2 h, the initial sulfuric acid concentration of 0.74 mol/L, the oxygen partial pressure of 0.7 MPa... acid concentration of 0.74 mol/L, the oxygen partial pressure of 0.7 MPa, the retention time of 2 h, and the agitation speed of 500 r/min. For each test, the extraction of zinc is always higher than 97......
An investigation of oxygen pressure acid leaching of Gacun complex Cu-Pb bulk concentrateXU Bina,b,ZHONG Hongc,and JIANG Taoa a School of Resources Processing and Bioengineering,Central South... id="ChDivSummary" name="ChDivSummary">The treatment of the Gacun complex Cu-Pb bulk concentrate with high Zn,Ag,etc.,by oxygen pressure acid leaching was studied.The pri-mary copper and leadminerals......
,sulfuric acid concentration150 g L-1,leaching temperature 150℃,leaching time120 min,oxygen partial pressure 0.7 MPa,additive amount of 0.2 wt%.关键词:... in sphalerite.The research was to investigate the amenability of zinc concentrate with high gallium to pressure oxygen leaching.The particle size,sulfuric acid concentration,oxygen partial pressure,additive......
Pressure leaching of zinc silicate ore in sulfuric acid medium LI Cun-xiong(李存兄), XU Hong-sheng(徐红胜), DENG Zhi-gan(邓志敢), LI Xing-bin(李兴彬), LI Ming-tin(李旻廷), WEI Chang(魏 昶) Faculty... and the results showed that zinc exists mainly as hemimorphite and smithsonite in the sample. Sulfuric acid pressure leaching of zinc silicate ore was carried out to assess the effect of particle size, sulfuric......