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Solvent extraction of molybdenum from acidic leach solution of Ni–Mo oreMing-Yu Wang,Xue-Wen Wang,Chang-Jun Jiang,Chao-Fan TaoSchool of Metallurgical Science and Engineering, Central South University摘 要:A P204(D2EHPA) diluted with sulfonated kerosene was used for the selective extraction of molybdenum from an acidic Ni–Mo ore leach solution......
Influence of thinning on acidic deposition in Chinese fir plantationsLIU Si-mian(柳思勉)1, 2, TIAN Da-lun(田大伦)3, 4, XIANG Wen-hua(项文化)3, 4, YAN Wen-de(闫文德)4, LIU Yun-guo(刘云国)1, 2, HU Xin-jiang(胡新将)1, 2... University of Forestry and Technology, Changsha 410004, China)Abstract:Acidic deposition, which is mainly caused by atmospheric pollution, is one of the global environmental problems. Thinning is an effective......
亚硝基R盐-溴化十六烷基三甲基铵-水体系浮选分离钴Ⅱ的研究涂常青1,温欣荣1(1.广东省梅州市嘉应学院化学与环境学院)摘 要:研究了亚硝基R盐-溴化十六烷基三甲基铵-水体系浮选分离钴Ⅱ的行为,探讨了亚硝基R盐(NRS)及溴化十六烷基三甲基铵(CTMAB)用量,pH等因素对Co2+浮选率的影响,得到了浮选分离钴Ⅱ的最佳条件,讨论了Co2+被浮选的机理.结果表明:控制pH值为3.0,当0.01 mol/L NRS溶液和0.01 mol/L CTMAB溶液的用量均为1.00 mL时,Co2+与NRS,溴化十六烷基三甲......
[J]. 中国有色金属学报, 2011, 21(4): 908-912. ZHANG Xiao-yun, QIN Wen-qing, TIAN Xue-da, et al. Microwave roasting-acidic leaching technique for extraction of vanadium from stone coal[J]. The Chinese Journal... dispersed in the leached residue, purified precipitation residue, vanadium extraction raffinate and second stage back-extraction solution precipitated solution, which account for 7.58% of vanadium......
building material. The present study aims at providing more laboratory evidence for evaluating the effects of salt precipitation on the deterioration process. In view of this, the remoulded soil specimens... at providing more laboratory evidences for uncovering the effects of salt precipitation on the deterioration process. It is widely recognized that soluble salts greatly limit the durability of porous......
Lian-hua, XUE Yu-lan. Sulfide precipitation flotation for treatment of acidic mine waste water[J]. Transactions of Nonferrous Metals Society of China, 2000, 10(S1): s106-s109. [19] 马小乐, 高 飞. 浅谈有色冶炼厂污酸及... and Treatment of Heavy Metal Pollution, Central South University, Changsha 410083, China) Abstract: Sulfide precipitation via gas-liquid reaction was used to treat the simulated acidic wastewater......
预处理能部分溶解Si,Al矿物,从而破坏含钒矿物晶体结构,为酸浸提钒时提高钒浸出率并降低酸耗创造条件.实验结果表明,在95 ℃温度下用20%NaOH对矿样浸出24 h后,酸浸工序中H_2SO_4用量30%,温度95 ℃,液固比1.5∶1,浸出时间12 h,钒浸取率达到了80%以上. 关键词:含钒粘土矿; 碱法浸出; 酸浸工艺; 五氧化二钒; vanadium-bearing clay; alkaline leaching; acidic leaching technique; vanadium pentoxide; [全文内容正在添加中] ......
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Flow-injection spectrophotometric determination of vanadium with malachite green oxalate by bromate in acidic and micellar mediumMohsen Keyvanfarda1,Narges Abedib21. Faculty of Science,Majlesi Branch,Islamic Azad University2. Group of Chemistry,Shahreza Branch,Islamic Azad University摘 要:A flow injection method is proposed for determining vanadium(V......
and the shrinking ratio is 2.8% compared with the pure vanadium. The main precipitation in the bulk grains is the complex Ti rich Ti-CNO phase, which has a plate shape with the width of about 100 nm... of precipitation, which has a square shape and the size is about 500 nm. The size of plate shape precipitation is reduced. Key words: vanadium alloy; microstructure; second phase ......
