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Solvent extraction of vanadium from sulfuric acid solutionWANG Mingyu, ZHANG Guiqing, WANG Xuewen, and ZHANG Jialiang School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China摘 要:The behaviour of vanadium(V) extracted from sulfuric acid solution was investigated using Cyanex 923 as an extractant. The effects......
from a vanadium extraction process were studied. An air stripping system was built, consisting of multi-face-ball packed stripping tower and adsorption tower, and pipe line system for circulation... is 7.2 mm/h. Key words: vanadium extraction; ammonia wastewater; air stripping; mass transfer coefficient 高浓度氨氮废水广泛存在于石油化工,有色金属冶炼,化肥,肉食品加工等行业.氨氮废水排入水体尤其是湖泊,海湾等流动较缓慢的水体容易引起藻类等微生物大量繁殖,导致水体富营养化[1......
Bioleaching of vanadium from barren stone coal and its effect on the transition of vanadium speciation and mineral phaseXin Wang1,2,Hai Lin3,2,Ying-bo Dong3,2,Gan-yu Li1,21. School of Civil..., University of Science and Technology Beijing摘 要:This study determined the optimal conditions required to obtain maximum vanadium extraction and examined......
400047, China) Abstract: The electronic structure of metallic V before and after reaction of V-H and its hydrides(VHx, x=0, 1, 2) in vanadium base solid solution was calculated by a quantum chemical... words: vanadium hydride; electronic structure; SCC-DV-Xα method 由于传统的AB5, AB2和AB型贮氢材料的贮氢量均低于2%(质量分数), 限制了贮氢材料在燃料电池上的应用, 故对于高容量的贮氢材料的研究倍受关注. 钒基固溶体材料作为一种新型的贮氢材料, 具有可逆贮氢量大, 氢在氢化物中的扩散速度较快等优点, 具有......
Leaching of vanadium from stone coal with sulfuric acidWANG Mingyu, XIAO Liansheng, LI Qinggang, WANG Xuewen, and XIANG Xiaoyan School of Metallurgical Science and Engineering, Central South... of stone coal, and two-stage counter-current leaching on the vanadium leaching ratio were studied. The results show that the vanadium leaching ratio of roasted stone coal through two-stage counter......
; 文献标志码:A Extraction technology of vanadium and chromium from vanadium slags in presence of activated carbon PAN Zi-wei1, 2, WANG Da-wei1..., China; 2. School of Chemical and Environmental Engineering, China University of Mining and Technology of Beijing, Beijing 100083, China) Abstract: For chromium in vanadium slag cannot be dissolved......
某低品位石煤钒矿资源综合利用工艺宁华1,黄光1,袁爱武1,王兴1,周晓源1(1.湖南省长沙市长沙有色冶金设计研究院)摘 要:介绍一种低品位石煤钒矿资源综合利用的工艺流程.表明低品位石煤钒矿的开发应该同时利用碳,钒,硫,硅多种元素,生产规模必须大型化,工艺路线应该稳妥化,设备选型要求优选化关键词:冶金技术; 石煤焙烧; 湿法提钒; 循环流化床锅炉......
Trans. Nonferrous Met. Soc. China 31(2021) 2501-2510 Effect of nickel oxide additive on smelting mechanism of chromium-bearing vanadium titanomagnetite pellets Gong-jin CHENG, Wei-dong TANG, Xiang... of chromium-bearing vanadium titanomagnetite pellets (CVTP) was investigated while analyzing the transfer behavior of nickel in iron and slag. The results show that when NiO added to CVTP increases from 0......
spectrum of biomass raw materials 实验采用的钒钛磁铁矿来自攀西地区,其主要化学组成见表2.其矿物组成见图3,主要由钛磁铁矿和钛铁矿组成,此外还存在少量镁铁橄榄石相. 表2 钒钛磁铁矿化学组成分析 Table 2 Chemical composition analysis of vanadium titanomagnetite (mass fraction, %) 图3 钒钛磁铁矿XRD谱 Fig. 3 XRD pattern of vanadium titanomagnetite 1.2 研究方法 实验转化装置示意图如图4所示.将生物质经(100 ℃,4 h)干燥后,与钒钛磁铁矿按一定的比例(以n(C)/n(Fe)计)配料,加入适量的水混合均匀并压制成圆柱形团块(d 20 mm×20 mm).将团......
Roasting and leaching behaviors of vanadium and chromium in calcification roasting–acid leaching of high-chromium vanadium slagJing Wen1,Tao Jiang1,2,Mi Zhou1,2,Hui-yang Gao1,Jia-yi Liu1,Xiang-xin...–acid leaching of high-chromium vanadium slag(HCVS)was conducted to elucidate the roasting and leaching behaviors of vanadium and chromium.The effects of the purity of Ca O,molar ratio between Ca O......