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效果.对除铁渣进行磷酸根的回收研究,当氢氧化钠加入0.8倍理论量,反应时间为2.5 h时,磷酸根几乎可以全部回收.该工艺具有操作简便,周期短,能耗低及环境友好等优点,对高效处理工业上常见的高铁低铜溶液具有重要意义.关键词:铜萃余液；磷酸盐除铁法；磷酸根回收；高铁低铜溶液Technique of removing iron by phosphate in high iron-low copper... as the high-iron low-copper solution were studied. The technical process of removing iron by phosphate was proposed. The results show that the optimal conditions are found, with sodium phosphate......
锌浸出液针铁矿法除铁邓永贵1,陈启元1,尹周澜1,张平民1(1.湖南省长沙市中南大学化学化工学院)摘 要:使用微分反应器装置针铁矿法从湿法炼锌浸出液除铁,对含铁为Fe3+/Fe2+浸出液为待除铁液进行试验.结果表明,此法除铁易于工业实践,除铁效果好.在大量晶种存在时,溶液pH=2.5,除铁后溶液含铁量为0.0064g/L,除铁率为99.74%,而没有晶种存在时,相同pH值时,除铁率仅为90%,除铁后溶液含铁量大于0.07g/L.关键词:冶金技术； 锌浸出液除铁； 针铁矿法； 晶种； 微分反应器装置......
石棉尾矿简法制备工业级白炭黑的工艺研究 龙小玲1,张雪青1,王志国2,惠贺龙1 (1.成都理工大学材料与化学化工学院,成都,610059;2.华北地质勘察局,天津,301800) 摘要:研究针对四川石棉县石棉尾矿高铁性质,采用二步酸浸,磁化除铁工艺,在较温和的反应条件下制备得满足HG/T3061-1999中A类标准要求的工业级白炭黑:SiO_2＞95.8%,比表面积为233m~2/g,平均孔径1~10μm,DPB吸油值为2.42mL/g.工艺流程设计简洁,操作便宜,为以高铁石棉尾矿为原料制备白炭黑提供切实可行的工艺. 关键词:石棉尾矿; 白炭黑; 二步酸浸磁化除铁; asbestos railings; silica; two-step acid-leaching; magnetization; iron removal; [全文内容正在添加中] ......
J. Cent. South Univ. (2020) 27: 1729-1741 DOI: https://doi.org/10.1007/s11771-020-4403-1 Optimal design for buckets layout based on muck removal analysis of TBM cutterhead YANG Mei(杨妹)1, 2, XIA Yi...: The layout of the buckets for tunnel boring machine (TBM) directly affects the muck removal efficiency of cutterhead during excavation. In order to improve the muck removal performance for TBM......
三电平中点箝位技术在冶炼生产中的应用张秋实1,刘文庄1,吴国秋2(1.北京市华北科技学院机电系2.河北钢铁集团唐山钢铁集团有限责任公司)摘 要:在钢铁冶炼过程中,除尘风机采用变频调速技术可以有效地满足冶炼生产工艺要求,大幅度节约电能,并能延长电动机的寿命.根据实际风机的控制要求,介绍了基于IGCT三电平中点箝位技术的高压变频器特点,采用此装置可以很好地满足风机运行的动态和静态要求,适应冶炼现场的生产工况.对变频改造前后的运行情况及经济性进行了分析对比,结果表明,新系统运行更加合理,可靠,节能效果显著,具有广泛的......
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, et al. Removal of iron from sulfuric acid leaching solution of ferrochromium alloy by goethite[J]. Hydrometallurgy of China, 2006, 25(4): 198-201. [4] 赵永, 蒋开喜, 王德全, 等. 用针铁矿法从锌焙烧烟尘的热酸浸出液中除铁[J]. 有色金属: 冶炼部分, 2005, 5(1): 13-15.ZHAO Yong, JIANG Kai-xi, WANG De-quan, et al. Iron removal from hot acid leaching solution of zinc roasting dust by goethite Process[J]. Nonferrous Metals: Extractive Metallurgy......
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of and in sodium aluminate solutions. The removal efficiency of S2- using ferrous compound and ferric compound can reach 86.10% and 92.70% respectively when the iron compounds were added... soda consumption and iron content in the alumina product and seriously corrode the steel equipment. Unfortunately, the current methods for sulfur removal could not treat high sulfur-containing diasporic......
machine was applied to the iron removal from potash feldspar. The effects of the magnetic field intensity, pulp density and grinding fineness on the iron removal were investigated. The optimized...Removing Iron by Magnetic Separation from a Potash Feldspar Ore刘艳杰1,彭会清1,HU Mingzhen21. School of Recourses and Environment Engineering, Wuhan University of Technology2. China Tin Group Co., Ltd摘 要......
