Metall. Res. Technol.
Volume 118, Number 1, 2021
|Number of page(s)||8|
|Published online||27 November 2020|
Degradation behaviors of coke under complex solution loss conditions
Jitang College, North China University of Science and Technology,
063210, PR China
2 College of Chemical Engineering, North China University of Science and Technology, Tangshan, Hebei 063210, PR China
* e-mail: email@example.com
Accepted: 2 November 2020
Solution loss reaction of coke provides reducing agent for ironmaking, which is an important chemical reaction in blast furnace. The coke itself is also degraded by the loss of carbon. In this paper, the degradation behavior of coke under complex conditions including alkali metal enrichment, simulated blast furnace temperature and atmosphere was studied. The pore size and pore wall thickness distribution of coke were measured by a microscope to characterize the structure of coke. The gasification reaction rate of coke matrix was measured by a thermogravimetric analyzer to characterize the matrix reactivity of coke. The results show that a coke has high CRI and low CSR, but it has high matrix reactivity and thick pore wall, which may lead higher strength after solution loss under alkali metal enrichment and simulated blast furnace atmosphere and heating conditions.
Key words: coke / solution loss / post-reaction strength / pore structure
© EDP Sciences, 2020
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