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Toward environmenta...
Toward environmentally friendly direct reduced iron production : A novel route of comprehensive utilization of blast furnace dust and electric arc furnace dust
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- Ye, Lei (author)
- Cent South Univ, Sch Minerals Proc & Bioengn, Changsha 410083, Hunan, Peoples R China.;Natl Engn Lab High Efficiency Recovery Refractory, Changsha 410083, Hunan, Peoples R China.
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- Peng, Zhiwei (author)
- Cent South Univ, Sch Minerals Proc & Bioengn, Changsha 410083, Hunan, Peoples R China.;Natl Engn Lab High Efficiency Recovery Refractory, Changsha 410083, Hunan, Peoples R China.
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- Ye, Qing (author)
- Cent South Univ, Sch Minerals Proc & Bioengn, Changsha 410083, Hunan, Peoples R China.;Natl Engn Lab High Efficiency Recovery Refractory, Changsha 410083, Hunan, Peoples R China.
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- Wang, Liancheng (author)
- Cent South Univ, Sch Minerals Proc & Bioengn, Changsha 410083, Hunan, Peoples R China.;Natl Engn Lab High Efficiency Recovery Refractory, Changsha 410083, Hunan, Peoples R China.
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- Augustine, Robin, 1982- (author)
- Uppsala universitet,Fasta tillståndets elektronik
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- Perez, Mauricio D. (author)
- Uppsala universitet,Fasta tillståndets elektronik
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- Liu, Yong (author)
- Guangdong Prov Key Lab Dev & Comprehens Utilizat, Guangzhou 510650, Guangdong, Peoples R China.
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- Liu, Mudan (author)
- Guangdong Prov Key Lab Dev & Comprehens Utilizat, Guangzhou 510650, Guangdong, Peoples R China.
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- Tang, Huimin (author)
- Cent South Univ, Sch Minerals Proc & Bioengn, Changsha 410083, Hunan, Peoples R China.;Natl Engn Lab High Efficiency Recovery Refractory, Changsha 410083, Hunan, Peoples R China.
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- Rao, Mingjun (author)
- Cent South Univ, Sch Minerals Proc & Bioengn, Changsha 410083, Hunan, Peoples R China.;Natl Engn Lab High Efficiency Recovery Refractory, Changsha 410083, Hunan, Peoples R China.
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- Li, Guanghui (author)
- Cent South Univ, Sch Minerals Proc & Bioengn, Changsha 410083, Hunan, Peoples R China.;Natl Engn Lab High Efficiency Recovery Refractory, Changsha 410083, Hunan, Peoples R China.
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- Jiang, Tao (author)
- Cent South Univ, Sch Minerals Proc & Bioengn, Changsha 410083, Hunan, Peoples R China.;Natl Engn Lab High Efficiency Recovery Refractory, Changsha 410083, Hunan, Peoples R China.
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Cent South Univ, Sch Minerals Proc & Bioengn, Changsha 410083, Hunan, Peoples R China;Natl Engn Lab High Efficiency Recovery Refractory, Changsha 410083, Hunan, Peoples R China. Fasta tillståndets elektronik (creator_code:org_t)
- Elsevier, 2021
- 2021
- English.
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In: Waste Management. - : Elsevier. - 0956-053X .- 1879-2456. ; 135, s. 389-396
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- In this study, a novel method for producing direct reduced iron (DRI) powders based on microwave-assisted self reduction of core-shell composite pellets composed of blast furnace (BF) dust and hazardous electric arc furnace (EAF) dust followed by magnetic separation was reported. The proper core-shell structure of the composite pellets was designed according to the rule of impedance matching and properties of BF dust and EAF dust by adjusting the thickness of shell (i.e., thickness of impedance matching layer) via controlling the C/O molar ratio of the raw materials from 0.55 to 0.70. The results showed that the EAF dust with high content of CaO was beneficial to the mechanical strength of green, dried, and metallized pellets (collected after reduction), while the BF dust with high content of carbon enabled sufficient microwave-assisted reduction of the pellets, facilitating subsequent magnetic separation and also the removal of zinc from EAF dust. By reduction of the core-shell BF dust-EAF dust composite pellets with the C/O molar ratio of 0.65 at 1050 degrees C for 15 min, the resulting metallized pellets showed superior reduction and magnetic separation indexes with higher removal percentages of zinc and lead, in comparison with conventional metallized pellets. The DRI powders obtained after magnetic separation had total iron content of 91.2 wt%, iron metallization degree of 95.8%, yield of 68.1%, and iron recovery of 88.0%. This study provided a good example for efficient and environmentally friendly comprehensive utilization of typical and hazardous wastes in the iron and steel industry.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
Keyword
- Electric arc furnace dust
- Blast furnace dust
- Core-shell structure
- Impedance matching
- Microwave-assisted reduction
- DRI powders
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Ye, Lei
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Peng, Zhiwei
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Ye, Qing
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Wang, Liancheng
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Augustine, Robin ...
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Perez, Mauricio ...
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show more...
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Liu, Yong
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Liu, Mudan
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Tang, Huimin
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Rao, Mingjun
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Li, Guanghui
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Jiang, Tao
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- About the subject
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Materials Engine ...
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and Metallurgy and M ...
- Articles in the publication
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Waste Management
- By the university
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Uppsala University