|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||PbZn 2020: The 9th International Symposium on Lead and Zinc Processing
||Zinc Reduction/ Vaporization Behavior from Metallurgical Wastes
||Timothy Kerry, Alexander Peters, Evangelos Georgakopoulos, Ashkan Hosseini, Erik Offerman, Yongxiang Yang
|On-Site Speaker (Planned)
The steelmaking industry produces large quantities of zinc-bearing wastes of varying forms. The amount of zinc in these materials is generally below that which is of value to the zinc smelter, consequently a method of concentration is required. Tata Steel owns and operates the pilot HIsarna ironmaking plant which, due to its high raw materials flexibility is attractive for the purpose of processing secondary iron sources. Furthermore, it can facilitate the simultaneous recovery of a zinc-enriched flue dust.
The high temperature behaviour of numerous waste materials will be presented with regards to their recyclability in the HIsarna furnace. Galvanised steel scrap, blast furnace (BF) sludge and basic oxygen furnace (BOF) sludge from Tata Steel IJmuiden have been studied along with ‘goethite’ waste produced by Nyrstar. The various input materials have been comprehensively characterised and their reduction/ vaporisation behaviour recorded. Optimal process conditions for maximising zinc recovery will be elucidated.