Vanadium is a metallic element with the symbol V, silver-gray metal, belonging to VB family in the periodic table of elements, with atomic number 23 and atomic weight 50.94 14. It is a body-centered cubic crystal with common valence of +5, +4, +3 and +2. Vanadium has a high melting point, is refractory, malleable, hard and non-magnetic.

It has the ability to resist hydrochloric acid and sulfuric acid, and is superior to most stainless steels in gas resistance, salt resistance and water corrosion resistance. Vanadium was discovered twice. The first discovery was made in 1965 by Gerhard Riva, a professor of mineralogy in Mexico City. He found it in the vanadate sample, which is Pb5(VO4)3Cl, because the salt solution of this new element is bright red when heated.

So it was named "Ellie Troni", which means "red", and was sent to Paris. However, French chemists concluded that it was a polluted chrome ore, so it was not recognized. The second discovery was in 1830, when Swedish chemist Safstrom was studying the iron ore in Smaran mining area, he dissolved iron with acid and found vanadium in the residue.

Later, at 1830, he found it in iron extracted from Swedish iron ore and confirmed that it was a new element called vanadium. He was able to prove that it was a new element, so he beat a man from Friedrich W? Hler), who is also studying another vanadium ore.

Content distribution:

Vanadium is found all over the world. In the crust, there is a lot of vanadium, with an average of one vanadium atom in 20,000 atoms, which is more than that of copper, tin, zinc and nickel, but the distribution of vanadium is too scattered, and there are almost no deposits with more content. In seawater, in marine life such as sea urchins.

Vanadium has been found in magnetite, various asphalt minerals and coal ash, meteorites falling to the earth and the spectral lines of the sun. Vanadium is a trace element widely distributed on the earth, and its content is about 0.02% of the earth's crust, which is relatively easy to obtain.