What Are the Processes Involved in Wet Vanadium Extraction?

Abstract: Haipu vanadium resin has higher exchange capacity, larger resin processing capacity, higher adsorption accuracy, and better selectivity for vanadium in use. Combined with Haipu vanadium ion exchange enrichment and purification process equipment, it better ensures the smooth and reliable operation of the system. #The acid leaching process of vanadium from stone coal - resin vanadium is an important strategic material, mainly used in the steel industry, cutting-edge defense industry, chemical industry and other fields. The world has abundant vanadium resources, which are widely distributed, but there are no separately exploitable rich ores, mostly coexisting with other minerals at low grades.

Stone coal is a unique vanadium mineral resource in China, with extremely abundant reserves. Fully developing and utilizing this resource is of great significance for the sustainable development of mineral resources in China. The vast majority of vanadium in China's stone coal exists in illite minerals, where vanadium replaces Al (III) in the form of V (III) and exists in the lattice of aluminosilicate minerals in the form of isomorphism. The structure of this aluminosilicate is generally relatively stable, and due to the difficulty of exposing vanadium, it is difficult to dissolve it in water, acid, or alkali; To extract vanadium from stone coal, it is necessary to first destroy the crystal structure of the mineral, converting V (III) into soluble V (IV) or V (V), in order to achieve efficient leaching of vanadium from stone coal. At present, the calcification roasting acid leaching ion exchange vanadium extraction process is one of the main processes in the vanadium extraction process of stone coal. When using dilute acid leaching instead of traditional water leaching process for vanadium containing stone coal after roasting, the overall recovery rate of vanadium can be improved, but the impurity mass fraction in the leaching solution also greatly increases. Ion exchange resin is a polymer compound with polar functional groups, and its structure can be divided into three parts: a. insoluble polymer skeleton; b. There are polar functional groups on the skeleton; c. Ions that can ionize polar groups; Ionizable ions can undergo ion exchange reactions with same-sex ions in solution in a quantitative relationship, and this reaction is reversible. This is also the reason why resins can undergo ion exchange and regeneration. The conventional anion exchange resin commonly used in the vanadium extraction industry from stone coal using ion exchange technology generally has problems such as low adsorption capacity, poor adsorption accuracy, and frequent regeneration, resulting in high vanadium extraction costs.

Haipu vanadium resin effectively solves the above problems, with higher exchange capacity, larger resin processing capacity, higher adsorption accuracy, and better selectivity for vanadium. Combined with Haipu vanadium ion exchange enrichment and purification process equipment, it better ensures the smooth and reliable operation of the system.