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J. Cent. South Univ. Technol. (2011) 18: 1940-1944 DOI: 10.1007/s11771-011-0926-9 Extraction of vanadium from stone coal by modified salt-roasting process WANG Ming-yu(王明玉), WANG Xue-wen(王学文), SHEN... Abstract: In order to reduce the pollution of Cl2 and HCl released during extracting vanadium from stone coal by sodium chloride roasting, a modified salt-roasting process was proposed by adding......
Leaching vanadium by high concentration sulfuric acid from stone coal CHEN Xiang-yang(陈向阳)1, 2, LAN Xin-zhe(兰新哲)1, 2, ZHANG Qiu-li(张秋利)1, MA Hong-zhou(马红周)1, ZHOU Jun(周 军)1 1. School... can reach 95.86%. Key words: stone coal; vanadium; leaching; sulfate solution ____________________________________________________________________________________________ 1 Introduction Vanadium......
Acid leaching of vanadium from roasted residue of stone coal ZHU Yang-ge(朱阳戈), ZHANG Guo-fan(张国范), FENG Qi-ming(冯其明), LU Yi-ping(卢毅屏), OU Le-ming(欧乐明), HUANG Si-jie(黄思捷) School of Resources... of stone coal that came from power generation was conducted. Factors which influence the leaching of vanadium such as concentration of sulfuric acid, leaching temperature, leaching time and liquid......
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 University, Changsha 410083, China摘 要:The effects of roasting, mass ratio of H2SO4 to stone coal, leaching temperature, liquid-to-solid ratio, grinding fineness......
Desiliconisation of alkaline leaching solution of roasted stone coal with carbonation method LONG Si-si(龙思思), ZHANG Guo-fan(张国范), FENG Qi-ming(冯其明), OU Le-ming(欧乐明), LU Yi-ping(卢毅屏... and silicon; carbonation method; stone coal; vanadium ____________________________________________________________________________________________ 1 Introduction Stone coal ore is a kind of vanadium......
Valency Study of Vanadium in Stone Coal of Southern ChinaXu Guozhen;Ge Nai’e;Chen Jianping;Shen Shaobo Chinese University of Geosciences,Beijing 100083摘 要:<正> Vanadium-bearing stone coal is a new resource of vanadium. V in stone coal mainly exists in three oxidation states: 7.84%V(Ⅲ), 72.08% Ⅴ(Ⅳ) and 20.08% Ⅴ(Ⅴ). The change and distribution......
vanadium from the stone coal vanadium ore in Fangshankou,Dunhuang area of Gansu Province, China was introduced.Various leaching experiments were carried out,and the results show that the vanadium ore...A new process of extracting vanadium from stone coalYan-hua Liu~(1,2)),Chao Yang~(1)),Pei-you Li~(2)),and Shi-qi Li~(1)) 1) Metallurgical and Ecological Engineering School,University of Science......
and Engineering,Central South University,Changsha 410083,China摘 要:<正>The extraction technology of vanadium from stone coal by means of no-salt-roasting and dilute... the present study,the effects of vanadium occurrence state in stone coal,roasting temperature and additive agent on the leach- ing efficiency of vanadium were studied.The results indicate that the effect......
Effect of Calcium on the Vanadium Extraction from High Calcium Type Stone Coal包申旭1,2,LIANG Liang1,张一敏1,2,HAN Shihua1,HU Yangjia11. College of Resources and Environmental Engineering, Wuhan University of Technology2. Hubei Key Laboratory of Mineral Resources Processing and Environment摘 要:The high calcium type stone coal from Hubei province was leached......
" name="ChDivSummary">Based on the fluidized roasting reduction technology of low-grade pyrolusite coupling with pretreatment of stone coal, the manganese reduction efficiency was investigated and technical conditions were optimized. It is found that the optimum manganese reduction efficiency can be up to 98.97% under the conditions that the mass ratio of stone coal to pyrolusite is 3:1......