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Kinetics of reductive leaching of manganese oxide ore using cellulose as reductantWU Fang-fang(武芳芳)1, 2, ZHONG Hong(钟宏)1, 2, WANG Shuai(王帅)1, 2, LAI Su-feng(赖素凤)1, 2(1. College of Chemistry..., China)Abstract:The kinetics of reductive leaching of manganese from a low-grade manganese oxide ore were studied using cellulose as reductant in dilute sulfuric acid medium. It was found that when......
Reductive leaching of low-grade manganese ore with pre-processed cornstalkAi-fei Yi1,2,3,Meng-ni Wu1,2,3,Peng-wei Liu1,2,3,Ya-li Feng1,2,Hao-ran Li31. School of Civil and Environment Engineering... of Process Engineering, Chinese Academy of Sciences摘 要:Cornstalk is usually directly used as a reductant in reductive leaching manganese. However, low......
J. Cent. South Univ. (2020) 27: 1484-1494 DOI: https://doi.org/10.1007/s11771-020-4384-0 Growth of metallic iron particles during reductive roasting of boron-bearing magnetite concentrate ZHANG Xin... reductive roasting of boron-bearing magnetite concentrate under different conditions were investigated. The size of the metallic iron particles was quantitatively measured via optical image analysis......
Reductive leaching of indium from the neutral leaching residue using oxalic acid in sulfuric acid solutionF.Maddah,M.Alitabar,H.YoozbashizadehDepartment of Materials Science and Engineering, Sharif University of Technology摘 要:The present study evaluates the reductive leaching of indium from indium-bearing zinc ferrite using oxalic acid as a reducer......
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Reductive atmospheric acid leaching of spent alkaline batteries in H2SO4/Na2SO3 solutionsMehmet Hakan MorcaliFaculty of Chemical and Metallurgical Engineering, Istanbul Technical University摘 要:This work studies the optimum reductive leaching process for manganese and zinc recovery from spent alkaline battery paste. The effects of reducing agents, acid......
Reductive leaching of manganese from low-grade pyrolusite ore in sulfuric acid using pyrolysis-pretreated sawdust as a reductantYa-li Feng1,Shi-yuan Zhang1,2,Hao-ran Li21. School of Civil...="ChDivSummary" name="ChDivSummary">Manganese(Mn) leaching and recovery from low-grade pyrolusite ore were studied using sulfuric acid(H2SO4) as a leachant and pyrolysis-pretreated sawdust as a reductant......
of reductive atmosphere of SO2 on zinc leaching rate 图4 中浸渣及还原产物O1s 能谱分析 Fig. 4 XPS O1s spectra analysis of raw residue and intermediate products ZnFe2O4H+·HSO3-=ZnFe2O3OH+HSO3(fast redox... leaching residue 图15 还原浸出渣XRD谱 Fig. 15 XRD pattern of reductive leaching residue 3 结论 1) 锌冶炼中浸渣中锌还原浸出的最佳反应条件:温度为95 ℃,初始硫酸浓度为80 g/L,二氧化硫分压为200 kPa,液固比为10:1,转速为400 r/min,反应120 min后,锌浸出率可达......
Trans. Nonferrous Met. Soc. China 25(2015) 4175-4182 Reductive acid leaching of cadmium from zinc neutral leaching residue using hydrazine sulfate Chun ZHANG1,2, Xiao-bo MIN1,3, Jian-qiang ZHANG1, Mi... confirmed that lead sulfate (PbSO4) and hydrazinium zinc sulfate((N2H5)2Zn(SO4)2) were the main phases remaining in the reductive leaching residue. Key words: reductive acid leaching; zinc neutral leaching......
; reductive decomposition; TG-DSC; leaching toxicity Foundation item: Project(2012KJZD01) supported by Science and Technology Development Foundation of Aluminum Limited Corporation of China; Project(TNA-M-007... fraction, %) 表4 含砷石膏渣的浸出毒性结果 Table 4 Leaching toxicity of arsenic bearing gypsum sludge 2.2 含砷石膏渣TG-DSC分析 2.2.1 含砷石膏渣直接热分解 为了进一步探究含砷石膏渣碳热还原分解行为,开展了煤粉和石膏渣直接热分解TG-DSC分析,如图4所示.由图4......