气候变化领域集成服务门户(CCPortal): Valorisation of metallurgical residues via carbothermal reduction: A circular economy approach in the cement and iron and steel industry

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DOI	10.1177/0734242X241240040
	Valorisation of metallurgical residues via carbothermal reduction: A circular economy approach in the cement and iron and steel industry
	Krammer, Anna Christine; Doschek-Held, Klaus; Steindl, Florian Roman; Weisser, Katharina; Gatschlhofer, Christoph; Juhart, Joachim; Wohlmuth, Dominik; Sorger, Christoph
发表日期	2024
ISSN	0734-242X
EISSN	1096-3669
英文摘要	The decarbonisation of the steel and cement industry is of utmost importance in tackling climate change. Hence, steel production in modern integrated steel mills will be shifted towards electric arc furnaces in the future, in turn causing dwindling supplies of blast furnace slag, which is used as a supplementary cementitious material inter alia to reduce the CO2 emissions of cement production. Achieving a sustainable circular steel and building material economy requires the valorisation of currently landfilled steel slags and investigating utilisation options for electric arc furnace slag, which is increasingly being generated. For this purpose, different metallurgical residues and by-products were treated by carbothermal reduction in an inductively heated graphite crucible and then rapidly cooled by wet granulation, yielding a slag fraction similar to granulated blast furnace slag and a metal fraction valuable as a secondary raw material. A spreadsheet-based model was developed to calculate residue combinations to accomplish target compositions of the slag and metal fractions to fulfil previously identified requirements of the targeted cementitious and ferrous products. The results demonstrate the high accuracy of the model in predicting the properties (e.g. main oxide composition) of the generated slag and metal fraction, which fulfil the needed requirements for their use as (i) a supplementary cementitious material and (ii) a secondary raw material in steel production.
英文关键词	Supplementary cementitious material; steel slags; circular economy; CO2-reduced cement; carbothermal reduction; metal recovery; industrial residue; metallurgical residues
语种	英语
WOS研究方向	Engineering ; Environmental Sciences & Ecology
WOS类目	Engineering, Environmental ; Environmental Sciences
WOS记录号	WOS:001199861900001
来源期刊	WASTE MANAGEMENT & RESEARCH
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/297242
作者单位	University of Leoben; Graz University of Technology; Graz University of Technology; Voestalpine AG
推荐引用方式 GB/T 7714	Krammer, Anna Christine,Doschek-Held, Klaus,Steindl, Florian Roman,et al. Valorisation of metallurgical residues via carbothermal reduction: A circular economy approach in the cement and iron and steel industry[J],2024.
APA	Krammer, Anna Christine.,Doschek-Held, Klaus.,Steindl, Florian Roman.,Weisser, Katharina.,Gatschlhofer, Christoph.,...&Sorger, Christoph.(2024).Valorisation of metallurgical residues via carbothermal reduction: A circular economy approach in the cement and iron and steel industry.WASTE MANAGEMENT & RESEARCH.
MLA	Krammer, Anna Christine,et al."Valorisation of metallurgical residues via carbothermal reduction: A circular economy approach in the cement and iron and steel industry".WASTE MANAGEMENT & RESEARCH (2024).