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magnetic separation showed that the removal rate of iron in kaolin ore could be increased obviously after calcination, and the rate of iron removal was 60% in the particle size range from 60 to 74 μm...Dry Separation of Iron Minerals from Low-Grade Coal-series Kaolin黄腾1,雷绍民1,LIU Mochou1,JI Mengjiao1,LIU Yuanyuan1,YIN Xudong2,PENG Yongjun1,31. School of Resources and Environmental, Wuhan University......
at the expense of low calcium removal rate. Key words: crystallization; gypsum; KCl regeneration; calcium removal .... On the other hand, CaCl2 is a common impurity in the industrial practice of KCl production. A typical example is: in the process of recovering KCl from the electrostatic precipitator sintering dust of iron......
类号:TF511 文献标志码:A Thermodynamics of arsenic removal from arsenic-bearing iron ores ZHANG Shu-hui, L? Qing, HU Xiao (College of Metallurgy and Energy, Hebei United.... But in the oxidizing or strong reducing atmosphere an appropriate arsenic removal can be obtained due to dynamic limit. Key words: arsenic-bearing iron ores; arsenic removal; thermodynamic analysis 随着钢铁工业的迅速......
的影响规律.结果如图1所示. 图1 温度和时间对除铁率的影响 Fig. 1 Effect of temperature and time on iron removal efficiency 由图1可见,溶液中的除铁率随着反应时间延长和温度升高而逐渐升高,当反应时间为180 min时,4个温度(170,180,190,200 ℃)下的除铁率分别为91%,92%,92.6... on iron removal efficiency 由图4可见,随着Na2SO4浓度升高,除铁率逐渐增加,当Na2SO4浓度由0 mol/L升高到0.25 mol/L时,除铁率由91%提高至96.3%.除铁率升高与Fe2+的氧化能力密切相关,Na2SO4的加入会使体系中SO42-增多,溶液中会形成大量的FeSO4离子对,它的氧化能力远强于Fe2+,使更多的Fe2+氧化水解形成赤铁矿[10].又因同离......
diagrams of the Cr-H2O and Fe-H2O systems, IR spectra and XRD pattern, the existence forms of iron in the potassium chromate were analyzed, and the methods of iron removal were investigated...: Cr-H2O system; thermodynamic calculation; potential-pH diagram; iron removal; potassium chromate ____________________________________________________________________________________________ 1......
preparation methods on simultaneous removal of gaseous CO and Hg0 over Cu-Co/ACN TANG Xiaolong1, 2, WANG Yuhe1, YI Honghong1, 2, GAO Fengyu1, 2 (1. School of Energy and Environmental Engineering, University... conditions of sintering furnace, with the presence of coke, the sintering of iron ore can cause carbon monoxide(CO) pollution and mercury(Hg) pollution. To simultaneously remove the Hg0 and CO from......
g/L,反应时间3 h 和氧分压0.3 MPa的条件下除铁率达到95%以上,除铁后溶液Fe 含量低于2.5 g/L,赤铁矿渣的Fe 含量高于50%.K 和Ca 的入渣率高于95%,Na,F 和Ni 的入渣率为50%~60%,Zn,Mg,Mn 和Cl 的入渣率低于1%.关键词:高铁闪锌矿；赤铁矿；除铁；湿法炼锌Iron-removal by hematite from leaching... precipitation and the behavior of impurities during the process were investigated. The results show that the iron removal rate and iron content of the residue increase with the increase of temperature,time......
:A 文章编号:1672-7207(2020)06-1471-10 Effects of removal of arsenic, sulfur and iron on cyanide leaching of high-arsenic gold concentrate ZHANG Shuanghua1, ZHENG Yajie1, CAO Pan1, LAI Shenzhi2, ZHANG... by roasting, and gold calcine was leached with sulfuric acid to remove iron.The effects of the removal of arsenic, sulfur and iron on gold cyanide leaching of high-arsenic gold concentrate were studied......
was considered as the best ion-removal system, which can guarantee a high iron removal efficiency, small amount of cobalt, nickel lost, and is conducive to the subsequent separation of cobalt...%. This ion-removal method has the advantages of high iron removal efficiency, favorable filtration performance and good application prospect. Key words: complexation-precipitation system; cobalt; nickel......
smelting chlorination method applied to removal of copper from copper slagsLI Lei(李磊), WANG Hua(王华), HU Jian-hang(胡建杭) (State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization... and Technology),Kunming 650093, China)Abstract:In order to reasonably utilize the iron resources of copper slags, the smelting chlorination process was used to remove copper from copper slags. higher holding......
