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Use of biomass in the iron and steel industry——An Australian persective
Pages: 34-42
Year: Issue:  6
Journal: World Iron & Steel

Keyword:  biomasscharcoalblast furnaceelectric arc furnaceheat and mass balancecharcoal injectionlvalue-inusecharcoal combustion;
Abstract: Since late-2006,in response to climate change,BlueScope Steel and OneSteel,partnering with CSIRO,have conducted an R & D program aimed at the development of technologies that can deliver deep cuts in net greenhouse gas emissions. The Australian Steel Industry CO 2 Breakthrough Program contributes internationally via the Worldsteel Association’s similarly named program. In the area of sustainable biomass utilisation,our studies are examining the entire chain from biomass supply and pyrolysis technologies,through to iron and steelmaking applications such as: sintering solid fuel; cokemaking blend component; steelmaking recarburiser; and,in the blast furnace,as a tuyere injectant( the largest application),nut coke replacement and reductant for pre-reduced feeds. For the EAF route, applications include replacement for charge carbon,foaming agent and steel recarburiser. Work has included several lifecycle and techno-economic studies as well as technology reviews. In all of the applications studied it has been found that charcoal properties can be usefully optimised,thus a concept referred to as "designer char"has been developed. In this paper,brief mention will be made of several applications,but emphasis has been placed on theoretical,economic and combustion studies of charcoal types considered for blast furnace tuyere injection.
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