| Thermo-analytical study on stainless steelmaking dust |
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| 作者姓名： | PENG Ji |
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| 作者单位： | School of Metallurgical Science and Engineering，School of Metallurgical Science and Engineering，School of Information Science and Engineering，School of Metallurgical Science and Engineering，Department of Metallurgical Engineering，Department of Metallurgical Engineering，Department of Metallurgical Engineering Central South University，Changsha 410083，China，Central South University，Changsha 410083，China，Central South University，Changsha 410083，China，Central South University，Changsha 410083，China，McGill University，Montreal，QC，Canada H3A 2B2，McGill University，Montreal，QC，Canada H3A 2B2，McGill University，Montreal，QC，Canada H3A 2B2 |
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| 基金项目： | Project(50 2 74 0 73)supportedbytheNationalNaturalScienceFoundationofChinaandproject (Metallurgy,2003)supportedbytheNaturalScienceandEngineeringResearchCouncilofCanada |
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| 摘 要： | 1 INTRODUCTIONStainlesssteelmakingdustisaby productwastegeneratedfromsteelmakingindustry .Itcontainssig nificantamountsofiron ,lead ,nickel,chromium ,etc .Heavymetalmaybeleachedintotheenviron mentbyrainorundergroundwater ,soitisclassifiedashazardouswastesandbannedbeingdisposedinreg ularlandfill1] .Thevaluablemetalsinthedustcanberecoveredinthewayofdirectrecycling2 6 ] andtheworthlessdustshouldbetreatedinthewayofvitrifi cation7] .But,itisnecessarytocommandthether malbehaviorofthedustbe…
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| 收稿时间： | 13 January 2003 |
| 修稿时间： | 15 March 2003 |
Thermo-analytical study on stainless steelmaking dust |
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| Peng Ji , Peng Bing , Yu Di , Tang Mo-tang , Neil Souza , Janusz A. Kozinski and Jonathan Lobel.Thermo-analytical study on stainless steelmaking dust[J].Journal of Central South University of Technology,2003,10(4):301-306. |
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| Authors: | Peng Ji Peng Bing Yu Di Tang Mo-tang Neil Souza Janusz A Kozinski and Jonathan Lobel |
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| Affiliation: | (1) School of Metallurgical Science and Engineering, Central South University, 410083 Changsha, China;(2) School of Information Science and Engineering, Central South University, 410083 Changsha, China;(3) Department of Metallurgical Engineering, McGill University, H3A 2B2 Montreal, QC, Canada |
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| Abstract: | Thermo-gravimetric analyzer (TGA) was used to determine the thermal behavior of stainless steelmaking dust and FTIR was used
to detect the components of off-gas. The TGA results indicate that three mass loss/gain stages exist in the thermal process.
The mass loss of the dust in the first stage results from the evaporation of moisture and the reaction between dissociated
carbon and metal oxides in the dust. The evaporation of moisture within the dust happens at 90–350 °C and the formation of
carbon dioxide happens at 250–470 °C. The mass gain of the dust in the second stage results from the oxidation of metals in
the dust by the oxygen at 470–950 °C. The third stage is a slow mass loss process, and some metals in the dust are evaporated
into the atmosphere in this stage. The evaporation of metals is carried out mainly at 900–1200 °C and the dust is sintered
at high temperature over 1200 °C.
Foundation item: Project (50274073) supported by the National Natural Science Foundation of China and project (Metallurgy, 2003) supported
by the Natural Science and Engineering Research Council of Canada |
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| Keywords: | thermal analysis stainless steelmaking dust environmental protection |
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