Benefits of using steel slag in cement clinker production for environmental conservation and economic revenue generation

doi:10.1016/j.jclepro.2020.124538

	Benefits of using steel slag in cement clinker production for environmental conservation and economic revenue generation
	Gao, Tianming 1,3,4; Dai, Tao 3,4; Shen, Lei 1,2; Jiang, Li 3,4
刊名	JOURNAL OF CLEANER PRODUCTION
	2021-02-01
卷号	282 页码:11
关键词	Clinker production Resource conservation Emission reduction Steel slag
ISSN号	0959-6526
DOI	10.1016/j.jclepro.2020.124538
通讯作者	Jiang, Li(jianglicup@126.com)
英文摘要	Steel slag, the most discharged metallurgical slag in China, is rarely applied in the production of clinkers. The aim of this study is to analyze the maximum substitution amount of steel slag in raw meal and calculate the resources required as well as the environmental and economic benefits of the addition. Numerical studies show that 14.30% was the maximum amount of steel slag added to the raw meal, and this was mainly determined by its Fe2O3 content. Pilot runs revealed that the quality indices of the currently used iron ore-based raw meal cannot be transferred to steel-slag-based feeds because the physical properties of the latter induce several technical problems during the production process. However, by implementing optimized quality indices and operational processes, the plant was able to produce a steel slag clinker with excellent performance, whose indicators all met the national standard requirements. It is possible to substitute all the iron ore (26.35-125.42 kg/t) and part of the limestone (34.40-160.02 kg/t) with increasing amounts of steel slag (from 43.04 to 202.26 kg/t). Using steel slag also led to an additional reduction in energy consumption (2.32-11.38 kg/t). Lessened limestone dissociation and lowered sintering temperatures can also help decrease the process and fuel emissions by up to 72.28 kg/t and 24.16 kg/t, respectively. Moreover, the use of steel slag can decrease raw meal cost by up to 0.82 USD/t compared to using iron ore and potentially increase annual earnings up to 2.37 MUSD/a for a 2500 t/d cement plant. (C) 2020 Elsevier Ltd. All rights reserved.
资助项目	National Natural Science Foundation of China[41971265] ; National Natural Science Foundation of China[41702123] ; National Natural Science Foundation of China[71991484] ; National Natural Science Foundation of China[41501590] ; National Natural Science Foundation of China[71633006] ; Geology and Mineral Resources Survey Project[DD20190676] ; National Key Research and Development Program of China[2016YFA0602802]
WOS关键词	ALTERNATIVE RAW-MATERIALS ; LIFE-CYCLE ASSESSMENT ; OXYGEN FURNACE SLAG ; PORTLAND-CEMENT ; BLAST-FURNACE ; INDUSTRIAL-WASTES ; CONCRETE ; PERFORMANCE ; ASH ; EMISSIONS
WOS研究方向	Science & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000608119500009
资助机构	National Natural Science Foundation of China ; Geology and Mineral Resources Survey Project ; National Key Research and Development Program of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/136372]
专题	中国科学院地理科学与资源研究所
通讯作者	Jiang, Li
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res IGSNRR, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Geol Sci, Inst Mineral Resources, MNR Key Lab Metallogeny & Mineral Assessment, Beijing 100037, Peoples R China 4.Chinese Geol Survey, Res Ctr Strategy Global Mineral Resources, Beijing 100037, Peoples R China
推荐引用方式 GB/T 7714	Gao, Tianming,Dai, Tao,Shen, Lei,et al. Benefits of using steel slag in cement clinker production for environmental conservation and economic revenue generation[J]. JOURNAL OF CLEANER PRODUCTION,2021,282:11.
APA	Gao, Tianming,Dai, Tao,Shen, Lei,&Jiang, Li.(2021).Benefits of using steel slag in cement clinker production for environmental conservation and economic revenue generation.JOURNAL OF CLEANER PRODUCTION,282,11.
MLA	Gao, Tianming,et al."Benefits of using steel slag in cement clinker production for environmental conservation and economic revenue generation".JOURNAL OF CLEANER PRODUCTION 282(2021):11.