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pressure acid leaching process for the extraction of nickel and cobalt. The effects of sulfuric acid added, leaching temperature, leaching time and liquid/solid (L/S) ratio on metals extraction were... leaching process[13-15]. In this work, the high pressure acid leaching is adopted to extract nickel and cobalt from laterite ore. The effects of various parameters including sulfuric acid added, leaching......
of millscale from steel plant and the effects of the liquid-solid ratio, the reaction temperature, the leaching time and the sulfuric acid excessive times was investigated. The best technical conditions of the leaching process were ascertained, and the kinetics of leaching was studied. The results show that when liquid-solid ratio is 3?1, the sulfuric acid excess is 1.25 times, reaction temperature......
nickeliferous ore. Part II. Sulfuric acid heap and agitation leaching [J]. Hydrometallurgy, 2004, 74: 267-275. [19] MCDONALD R G, WHITTINGTON B I. Atmospheric acid leaching of nickel laterites review...J. Cent. South Univ. (2016) 23: 39-43 DOI: 10.1007/s11771-016-3046-8 Kinetic study on leaching of nickel from Turkish lateritic ore in nitric acid solution Tevfik AGACAYAK, Veysel ZEDEF, Ali ARAS......
of sulfuric acid leaching of cadmium from Cd–Ni zinc plant residues [J]. Journal of Hazardous Materials, 2009, 163(2/3): 880-890. [5] ARSLANA C, ARSLANB F. Recovery of copper, cobalt, and zinc from copper... University Press and Springer-Verlag Berlin Heidelberg 2012 Abstract: A two-step leaching method in combination of acid and ethylene diaminetetraacetic acid disodium (EDTA-Na2) was applied to extract metals......
acid in 100 g cobalt ores, reaction time 2 h, reaction temperature 80 ℃, the ratio of liquid to solid 2?1 when high-arsenic cobalt ores was leached by sulfuric acid solution. The leaching rate of Co... acid oxidation leaching with sulfuric acid, the leaching rate of Co is 96.35% when the nitric acid and sulfuric acid addition volume are 56 mL and 39 mL in 100 g cobalt ores, reaction time is 4 h......
examined in the range of 0.4 to 1.0 MPa under constant conditions. The experimental data and the fitting results are shown in Figure 10. Figure 9 Effect of sulfuric acid concentration on leaching... 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......
tellurium was prepared from neutralization sludge by the method of sulfuric acid leaching and sulfur dioxide reduction. The results shows that, in the process of sulfuric acid leaching of neutralization sludge, the leaching rate of tellurium is 100% when the reaction temperature is 30 ℃, reaction time is 0.5 h, sulfuric acid concentration is 53.9 g/L, the dosage of sulfuric acid is 1.5 times......
, Tehran 1591634311, Iran摘 要:Leaching of an oxidized copper ore containing malachite, as a new approach, was investigated by an organic reagent, citric acid. Sulfuric acid is the most common reagent in the leaching of oxide copper ores, but it has several side effects such as severe adverse impact on the environment. In this investigation, the effects......
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