Press Release / Automotive / Main industrial types of vanadium deposit

Main industrial types of vanadium deposit

Main industrial types of vanadium deposits in China are the magmatic, the sedimentary and the volcanic (porphyrite). Magmatic-type vanadium deposits are geotectonically located in platform areas, geosynclinal fold belts, or at platform margins, exhibiting a zonal distribution and controlled by deep faults. They are genetically and spatially closely related to basic-ultrabasic rocks of all times, and occur in the Tianshan-Yinshan, the southern Shaanxi-western Hubei and the Sichuan-Yunnan metallogenic belt. For instance, magmatic vanadium deposits can be found in the Panzhihua-Xichang region of western Sichuan, the Hanzhong area of Shaanxi, and the Yunyang and Xiangyang areas of Hubei.

The magmatic type includes two subtypes: the late-stage magmatic differentiation subtype and the late-stage magmatic injection subtype. Their typical deposits are distributed in the Panzhihua-Xichang region of Sichuan and the Chengde area of Hebei. In the former, deposits of the late-stage magmatic differentiation subtype occur in layered rock bodies of the gabro-troctolite-olivine gabro assemblage or the gabro-pyroxenite-peridotite assemblage. These deposits can also be subdivided into the gabro group (e.g. the Panzhihua and Taihe V-Ti-magnetite deposits), the gabro-troctolite-olivine gabro group (e.g. the Baima and Badong V-Ti-magnetite deposits), the gabro-pyroxenite-pyrolite group (e.g. the Hongge V-Ti-magnetite deposit), the gabro-norite group (e.g. the Bijigou and Wangjiangshan V-Ti-magnetite deposits in Shaanxi), and the diabase group (e.g. the Tiefosi-Taoyuan V-Ti-magnetite deposit). Deposits of the late-stage magmatic injection subtype, which are represented by the Damiao V-Ti-magnetite deposit in the Chengde area, occur at the contact between plagioclasite and gabro or in the fracture zone of plagioclasite. Sedimentary-type vanadium deposits are controlled by the stratigraphy and lithology of a certain horizon. In China, this type refers primarily to the vanadium deposits in black sequence. They are distributed commonly in the Sino-Korean platform and Yangtze platform, and on the two sides of the Qinling-Qilian geosynclinal fold system, less commonly in the Tarim platform and the South China fold system. Lithologically, they are controlled by Sinian-Early Cambrian, Silurian and Permian siliceous-carbonaceous rocks, allite (claystone) and phosphorite. Commercial sedimentary vanadium deposits presently discovered mostly occur in the so-called "Lower Cambrian black sequence" (i.e. the "stone coal" sensu lato) of the Yangtze platform and the Qinling-Qilian fold system. As for geographical distribution, except a few outcrops in Shaanxi, Shanxi and Henan, no vanadium deposits are present in northern China; most of them are, in fact, found in southern China, i.e. in Sichuan, Guizhou, Guangxi, Hunan, Hubei, Zhejiang, Anhui, Jiangxi and Guangdong, especially in the Zhejiang-southern Anhui-southwestern Jiangxi-Hunan-northwestern Guangxi belt that continuously extends for over 1,600 km.

The black sequence consists of black carbonaceous shale, black carbonaceous, argillaceous and siliceous rocks, and black carbonaceous silicalite, and is characterized by a high content of organic carbon (generally 8%~12%). This sequence can be subdivided into the stone coal bed, the phosphorite bed, the vanadium ore bed, and the Ni-Mo-multielement-rich bed, which are collectively called the "stone coal". The V2O5 contents of these beds differ greatly from one another, generally ranging from 0.13~1.00%, and 60% of the ore-bearing beds have a V2O5 grade lower than 0.50%. The lithologic sequence of the vanadium ore bed consists, in ascending order, of the black carbonaceous silicalite, the black carbonaceous silty shale, the vanadium ore and the black carbonaceous shale, and can be divided, in terms of element assemblages, into the V-bearing, the V-Mo, the V-Ni, the V-Ga, the V-U, the V-Mo-U, the Ni-Mo-V and the V-Cd type. Henan Hongxing Mining Machinery Co., Ltd is the professional manufacturer of complete sets of mining machinery, for example,spiral separator,stone crushing plant Welcome all of you to visit our official website.vibratory feeder:http://www.hx-crushers.com/p20.html