Vanadium ore is an important ferrous metal deposit, and its main oxide is vanadium pentoxide (V2O5). Vanadium exists in nature in a variety of mineral forms, including high-vanadium minerals such as green sulfur vanadium ore and vanadium mica, and low-vanadium minerals such as vanadium magnetite and vanadium titanomagnetite. The main object of vanadium ore industrial use is especially in the steel industry as an alloying element to enhance the performance of steel.

It is also widely used in the fields of steel industry, metallurgy and chemical industry, aerospace, national defense and military industry, medicine, pigments, glass, new energy batteries, etc. Due to its high hardness, corrosion resistance and good high temperature resistance, vanadium plays an important role in the manufacture of high-performance materials. Especially in the field of vanadium batteries, vanadium ore is the basis and key material for the manufacture of vanadium flow batteries.

The extraction of vanadium ore usually involves several steps, including crushing,optical sorting, grinding, roasting, leaching and chemical treatment. Different extraction methods are suitable for different types of vanadium minerals and raw materials. The following are some common vanadium ore extraction methods:

Nanochemical roasting: This is a commonly used vanadium extraction method, especially for extracting vanadium pentoxide from vanadium-containing ores or vanadium-containing stone coal. In this process, the ore is mixed with salt or soda ash and roasted to convert vanadium into a soluble form. This method requires less investment and is simple to produce, but it produces odorous fumes and saline wastewater that are harmful to the environment.

Calcification roasting: This is a relatively new environmentally friendly and pollution-free method for vanadium extraction. In this process, calcium carbonate is added to the vanadium ore soil, and after high-temperature roasting, vanadium is leached by acid leaching, and then adsorbed, impurized and refined by ion exchange resin to obtain a high-purity vanadium pentoxide product.

Hydrochloric acid leaching: Hydrochloric acid leaching is widely used in the recovery process of vanadium due to its high selectivity. Further separation of vanadium from the hydrochloric acid leachate is a necessary step, and specific extractants such as N1923 can be used to achieve efficient vanadium extraction and separation.

Solution extraction: Using organic solvent extractants such as Aliquat-336 to extract vanadium from alkaline solutions is also a feasible method. By optimizing the extraction conditions, such as the concentration of Na2CO3 and NaHCO3, temperature, and extractant concentration, a higher vanadium extraction efficiency can be achieved.

Blank roasting-acid leaching process: This is a process for extracting vanadium from stone coal vanadium ore, involving the optimization of parameters such as grinding fineness, roasting temperature and time, sulfuric acid dosage, leaching aid dosage, leaching temperature and time. Under suitable conditions, the leaching rate of vanadium can reach a high level.

XRT intelligent sorting: After the vanadium ore is crushed to a suitable dissociation particle size, the waste rock in the vanadium ore is discarded in advance using XRT intelligent sorting machine and the vanadium concentrate is enriched, and the processing volume of subsequent grinding, roasting, leaching and other process links is reduced, and the energy consumption and the use of chemical agents are reduced, which is not only beneficial to the environment, but also saves costs.

The choice of these methods depends on the specific composition of the vanadium ore, the purity of the required product, and the environmental protection requirements. In industry, the specific process of extracting vanadium may combine multiple methods mentioned above to ensure high efficiency and low environmental impact.