Vanadium has many excellent physical and chemical properties, so vanadium is very widely used, known as metal "vitamin". The initial vanadium is mostly used in steel, by refining the structure and grain of steel, improve the grain coarsening temperature, thereby increasing the strength, toughness and wear resistance of steel. Later, people gradually discovered the excellent improvement of vanadium in titanium alloys, and applied to the aerospace field, so that the aerospace industry has made breakthrough progress. With the rapid development of science and technology level, human requirements for new materials are increasing day by day. Vanadium is more and more widely used in non-steel fields, and its scope covers aerospace, chemistry, batteries, pigments, glass, optics, medicine and many other fields.
Iron and steel industry---About 85% of the metal vanadium is added to steel production in the form of iron vanadium and vanadium nitrogen alloys to improve the strength, toughness, ductility and heat resistance of steel. High strength alloy steel containing vanadium is widely used in the production and construction of oil/gas pipelines, buildings, Bridges, steel rails, etc. High strength alloy steels containing vanadium mainly include: High strength low alloy (HSLA) steel (comprehensive); HSLA steel plate; HSLA steel; HSLA strip steel; Advanced high strength strip steel; Threaded steel bars for construction; High carbon steel wire; Steel rails; Tools and die steel, etc.
Aerospace industry---Vanadium titanium alloy is widely used in aircraft engine, aerospace cabin skeleton, missile, warship hydrofoil and introducer, steam turbine blade, rocket engine casing and so on. In addition, vanadium alloy is also used in magnetic materials, cemented carbide, superconducting materials and nuclear reactor materials and other fields.
Chemical industry---In the chemical industry, vanadium compounds are used as catalysts, ceramic colorants, developers, desiccant and raw materials for the production of high purity vanadium oxide or iron vanadium. V205 has special activity as catalyst, which is difficult to be replaced by other elements.
Battery industry---Vanadium flow REDOX battery (VRB) energy storage battery is the most promising large capacity energy storage system. Compared with other batteries, it has the following points: (1) the rated power and rated energy are independent, the power depends on the battery stack, the energy depends on the electrolyte, so you can increase the amount of electrolyte at will to increase the battery capacity; (2) During charge and discharge, the vanadium battery is only a liquid phase reaction, unlike ordinary batteries, which have complex solid-phase changes that can cause the battery current to break or short circuit; (3) Long storage life and storage life of the battery; (4) 100% discharge without damaging the battery;
