Thermal Processing of Industrial Ashes for Ferrovanadium Production
Petroleum fly ash generated from heavy oil fired power plant contains significant amount of vanadium and carbon. In the present study a recipe-based concept is introduced for metal recovery by making use of two waste ash residues: basic oxygen furnace (BOF) steelmaking flue dust, and petroleum fly ash. The carbon contained in the fly ash is used as the reductant and BOF flue dust provides iron source and partially slag formers. A ferrovanadium alloy (FeV) with 15–20% vanadium was produced through reduction smelting of the two ash mixture at 1550–1600°C in the lab. Some impurities (Ni, S and C) remain in the metal. The carbon to metal ratio has the largest effect on the metal quality. The slag properties such as basicity are important for metal yield and metal quality. The results prove that a recipe-based multi-waste co-processing can be a sustainable solution for converting wastes to valuable raw materials.
KeywordsPetroleum fly ash BOF flue dust Thermal processing Ferrovanadium (FeV)
Unable to display preview. Download preview PDF.
- 1.Désirée E. Polyak. 2011 Minerals Yearbook. U.S. Geological Survery, 2012.Google Scholar
- 4.ASM Handbook, Volume 1, Properties and Selection: Irons, Steels, and Highperformance Alloys. ASM International, 1995.Google Scholar
- 5.T.K. Mekherjee S.P. Patinaik and C.K. Gupta. Ferrovanadium from a secondary source of vanadium. Metallurgical Transactions B, 14B:133–135, 1983.Google Scholar
- 6.F.A. Schmidt O.N. Carlson and W.E. Krupp. A process for preparing high-purity vanadium. Journal of Metals, pages 320–323, 1966.Google Scholar
- 7.Vanadium and Vanadium Compounds. Ullman’s Encyclopedia of Industrial Chemistry. Wiley-VCH, Wienheim, Germany, 2005.Google Scholar
- 12.Y. Xiao, H. Jalkanen, Y. Yang, C. R. Mambote (extern) and R. Boom. Thermal Processing of Petroleum Fly Ash for Vanadium Recovery. “XXV International Mineral Processing Congress (IMPC 2010)”, The Australasian Institute of Mining and Metallurgy (AusIMM), ed. Publication Series No 7/2010. 6 — 10 September 2010, Brisbane, Australia. pp. 1643–1652.Google Scholar