Preparation Method Of Vanadium Salts

Pure vanadium metal is generally obtained by reducing vanadium pentoxide with potassium under high pressure. Most vanadium is a byproduct of processing other minerals. In industry, pure vanadium can also be produced by reducing vanadium pentoxide with aluminum and coke.
The production of pure vanadium by reducing vanadium pentoxide with coke involves mixing V2O5 powder evenly with high-purity carbon powder, adding 10% camphor ether solution or alcohol, pressing and placing it into a vacuum carbon resistance furnace or induction furnace. Vacuum pressure inside the furnace reaches 6.66 × After 10-1Pa, heat up to 1573K and keep it warm for 2 hours. After cooling, the reaction products will be crushed. According to the composition of the first reduction product, add an appropriate amount of vanadium carbide or vanadium oxide for secondary reduction. The vacuum pressure inside the secondary reduction furnace is 2.66 × 10-2Pa, temperature controlled between 1973 and 2023K, and kept for a period of time. The composition of vanadium metal obtained by vacuum carbon reduction method (mass fraction m/%) is: vanadium 99.5, oxygen 0.05, nitrogen 0.01, carbon 0.1. The yield of vanadium can reach 98% to 99%.
The aluminum thermal reduction method involves reacting vanadium pentoxide and pure aluminum in a reaction bomb to produce vanadium aluminum alloy. Vanadium alloy can be dealuminated at high temperature and vacuum of 2063K to produce crude vanadium metal containing 94% to 97% vanadium.