中国钢铁工业空气污染物排放现状及趋势

doi:10.13228/j.boyuan.issn0449-749x.20210068

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Abstract At present, China′s crude steel output has accounted for more than half of the world′s total output, and the development of China′s steel industry is of great significance to the world. China′s steel industry mainly adopts the long-process smelting technology of "blast furnace-converter" which uses coal as the main fuel. As a result,a large number of air pollutants,including sulfur dioxide (SO₂),nitrogen oxides (NO_x) and particulate matter (PM_2.5),etc. are emitted during steel production. This paper summarizes the current status of air pollutant emissions in China′s steel industry from the sources of pollutants in the iron and steel industry, changes in the total emissions of pollutants, the characteristics of pollutant emissions from different smelting processes, the regional distribution of pollutant emissions in China′s iron and steel industry and the characteristics of pollutant emissions from iron and steel enterprises of different scales. In addition, the article also briefly reviewed the progress of ultra-low emission transformation of China′s steel industry to control air pollutants, and based on this, put forward the problems existing in the control of air pollutants in China′s steel industry and analyzed the development trend of air pollutant emission in the future of China′s steel industry.

Key words： iron and steel industry air pollutant emission status development trend emission reduction

Received: 02 February 2021

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	ZHANG Jian-liang
	YU Ji-yong
	LIU Zheng-jian
	XU Run-sheng

Cite this article:

ZHANG Jian-liang,YU Ji-yong,LIU Zheng-jian等. Current situation and trend of air pollutant emission in China′s steel industry[J]. Iron and Steel, 2021, 56(12): 1-9.

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http://www.chinamet.cn/Jweb_gt/EN/10.13228/j.boyuan.issn0449-749x.20210068 OR http://www.chinamet.cn/Jweb_gt/EN/Y2021/V56/I12/1

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