VANADIUM EXTRACTION FROM RESIDUAL OF FIRED CRUDE OIL IN POWER PLANTS VANADIUM EXTRACTION FROM RESIDUAL OF FIRED CRUDE OIL IN POWER PLANTS

Abstract

The chemical compositions of Iraqi crude oil often have a high concentration of the vanadium and nickel elements. The quantity of waste resulting from the burning of crude oil in electrical generation stations (power plants) in Iraq, including more than 10thousand tons per year of vanadium and nickel. The percentage of these elements was between 25and 35% depending on the type of crude oil used.This paper at hand deals with the extraction of vanadium metal from residual of fired crude oil in electric power station. The residual were pretreated by grinding and sieving. Vanadium and nickel then concentrated by particle size. Magnetic helps to separate the iron exist in crude oil residual as magnetite form. The results show the ability of separating will be 83 % of iron, vanadium also can be recovered from the residual by alkaline leaching method by using sodium hydroxide solution. Thereafter resulted in the leaching 98% of vanadium, and an increasing nickel concentration to 17.37%.The establishment of industrial units of this technology allows for Iraq and other regional countries to assume a leading position world wide in the production of vanadium.It is noted that vanadium pentoxide (V¬2O5), does not produce locally now in Iraq.