自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

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中南大学学报(英文版)

Journal of Central South University

Vol. 10    No. 4    December 2003

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Thermo-analytical study on stainless steelmaking dust
PENG Ji(彭 及)1,PENG Bing(彭 兵) 1, YU Di(余 笛)2,TANG Mo-tang(唐谟堂)1,
Neil Souza3, Janusz A. Kozinski3, Jonathan Lobel

1.School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China;
2.School of Information Science and Engineering, Central South University, Changsha 410083, China;
3.Department of Metallurgical Engineering, McGill University, Montreal, QC, Canada H3A 2B2

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℃and the formation of carbon dioxide happens at 250-470℃. 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℃. 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 900-1 200℃and the dust is sintered at high temperature over 1 200℃.

 

Key words: thermal analysis; stainless steelmaking dust; environmental protection

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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