RECOVERY OF VANADIUM AND NICKEL FROM PETROLEUM FLYASH Masud A Abdel-latif Mintek, Randburg, Republic of South Africa , with vanadium recovery of more than 89 per cent, and a disposable slag , coal ash has been mixed with oil ash resulting in the dilution of the metal oxides in that final ash
treatment system as fly ash The fly ash from burning petroleum oil is an important secondary resource for vanadium, after the primary resource of the ore concentrates and the metallurgical slag According to the information in literature , hydrometallurgical processing is usually found as the
Though vanadium recovery was not complete from oil fly ash (with a 70% recovery level), the proposed procedure allowed an efficient, simple and complete recovery of vanadium (greater than 98%) from the leachate in the form of a pure product, that could be valorized Improving the process would consist in increasing vanadium leaching efficiency
Coal Ash: Hazardous to Human Health What is coal ash? Coal ash is the waste that is left after coal is combusted (burned) It includes fly ash (fine powdery particles that are carried up the smoke stack and captured by pollution control devices) as well as coarser materials that fall to the bottom of the furnace Most coal ash comes from coal .
A process has been developed to recover gallium and vanadium from coal fly ash in which they exist at very low concentration in a mixture of high concentration of less desirable speci
Annual production of fly ash may be as much as 15 billion tonnes globally 2 The largest use for coal fly ash is for construction purposes, but data suggests that despite shortages of cementitious Class C fly ash in some regions, a considerable proportion of the total fly ash produced globally may be under-utilized (eg, used as low-value fill material) or unutilized 3,4 In addition, some .