Study of Vanadium Occurrence in Vanadium Ore Contained in Black Rock Series and Technology of Vanadium Extraction
Vanadium ore is widely distributed in black rock series (Fan, Zhang and Ye, 2004) in many provinces of China, which accounts for 87% (Zuo, Peng and Dugang, 2001) of vanadium reserves in China. In Cambrian black rock series in south Qinling Mountain, there are large or medium-sized sedimentary deposits such as Zhongcun vanadium deposit, Yinhua vanadium deposit, Qianjiaping vanadium deposit, Xiajiadian gold-vanadium deposit and Lengshnigou vanadium deposit. The vanadium is distributed in other minerals mainly in the form of isomorphic replacement. These types of ore are characterized by no independent vanadium mineral, low grade and vast reserves. Now in China the vanadium extraction technology is backward with low utilization rate of resources.The difficulties of vanadium extraction from black rock series are that the enrichment by means of mechanical beneficiation is difficult; the cost of direct chemical extraction is high and the emission of waste gas from pyrogenic process does not conform to environmental protection standard.Therefore the study of vanadium occurrence, the improvement & optimization of vanadium extraction technology and the realization of pollution-free and low-cost extraction of vanadium from black rock series are of great and realistic importance for environment-friendly exploitation & utilization of vanadium resource in China.The study is based on carbon content in ore of Cambrian black rock series in south Qinling Mountain. Two kinds of ore are selected. Vanadium ore with low carbon content (TC＜1%) is taken as Sample 1 while vanadium ore with high carbon content (TC＞10%) as Sample 2. Based on analysis of ores lithologic features and vanadiums occurrence, a vanadium extraction technological process characterized by selective grinding, low cost and no pollution is proposed.
Vanadium Black rock series Extraction
J. Ma L. X. Yuan J. Li
Northwest Nonferrous Geological Research Institute, Xian, China
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
246-254
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）