NDLI: Novel concept of recycling sludge and dust to BOF converter through dispersed in-situ phase induced by composite ball explosive reaction

Content Provider	Springer Nature Link
Author	Tang, Fu ping Yu, Shu juan Fei, Peng Hou, Hou yu Qian, Feng Wang, Xiao feng
Copyright Year	2017
Abstract	Recycling of iron and steelmaking dusts is a key issue in environmental protection efforts and to ensure efficient utilization. In this investigation, we developed a novel recovery process that uses a dispersed in-situ phase induced by an explosive reaction of composite balls of iron and steelmaking dusts. We designed and prepared composite balls for this function using a laboratory model batch-type balling disc (at 12 r/min) and optimized the feeding modes in 180-t and 260-t basic oxygen furnace (BOF) converters. The results indicate that feeding composite balls into BOF converters is an effective novel technology for recovering iron and steelmaking dusts. The period after hot metal charging and prior to the oxygen-blowing process is the most reasonable time to feed composite balls. Composite ball treatment is not appropriate for steel production with sulfur requirements lower than 80 ppm. The maximum composite ball feeding amount is 40 kg/t and the iron yield rate is better than 95%. Compared with the conventional recycling process of sludge and dust, this novel technology is more convenient and efficient, saving up to 309 RMB per ton of steel. Further investigation of this novel recycling technology is merited.
Starting Page	863
Ending Page	868
Page Count	6
File Format	PDF
ISSN	16744799
Journal	International Journal of Minerals, Metallurgy, and Materials
Volume Number	24
Issue Number	8
e-ISSN	1869103X
Language	English
Publisher	University of Science and Technology Beijing
Publisher Date	2017-07-29
Publisher Place	Beijing
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	iron and steelmaking dusts composite balls recovery converter explosive reaction Materials Science Metallic Materials Characterization and Evaluation of Materials Ceramics, Glass, Composites, Natural Materials Surfaces and Interfaces, Thin Films Tribology, Corrosion and Coatings
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Mechanics of Materials Metals and Alloys Geochemistry and Petrology Mechanical Engineering

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