The Wet Vanadium process and Fire Vanadium process

Wet Vanadium process is also named as Water Vanadium process, which is extracting Vanadium from Vanadium Titanium Magnetite stone directly. This method use Vanadium Titanium Magnetite concentrate Vanadium high ( typically mass fraction containing V2O5 was 1 % to 2 % ) as raw materials, selected by the broken ore concentrate. Mixed with Mirabilite into a ball and put it into the kiln, calcination at 1200 ℃ condition, the Vanadium in the ore has a react with Mirabilite, and Vanadium can be change into soluble Sodium Vanadate. Then roasting pellet immersed in water, make the Sodium Vanadate fully dissolved. By adding Sulfuric Acid, Sodium Vanadate and then converted to water insoluble V2O5. As a result of sedimentation, filtration, can be used as the raw materials for the production of Vanadium ferro-alloy industry .
Fire Vanadium process is also named as Oxidation Vanadium process, which is with Vanadium containing Magnets sinter, after the blast furnace smelting from molten iron containing Vanadium and Vanadium treatment. In addition, we can also use the electric furnace, Vanadium iron ore prereduction into metal pellets, then through electric furnace smelting of hot metal containing Vanadium, extracting Vanadium slag.
The comparison of these two kinds of Vanadium extraction method:
Wet Vanadium process:
Disadvantage:
1. The recovery rate of Vanadium is low, the concentrate powder into the V2O5 recovery rate was 60 % to 70 %.
Advantage:
1. Extraction of Vanadium slag as V2O5 raw materials, the Vanadium content is high, the treatment is less and recyclable iron.
2. The calcination temperature is low, only about 800 ℃, power and auxiliary materials consumption is less.
Fire Vanadium process:
Disadvantage:
1. Large handling capacity, large equipment investment.
2. The calcination temperature ( above 1200 ℃) power and auxiliary material consumption.
3. No recovery of iron.
Advantage:
1. Material handling is simple.
2. The Vanadium recovery rate is high, from ore to V2O5 the yield was above 80 %.