Abstract
The occurrence of different ringing behaviors in oxidized pellet kiln for two kinds of coal (A and B) with similar properties, is difficult to explain based on the relationship between kiln ringing and coal properties. In this paper, the interaction of coal ash with pellet scrap powder was considered by studying the cohering behavior of powders consisting of them. The results showed that the cohering briquette strength of pellet scrap powder increased considerably when mixed with a small amount of coal ash; a maximum could be reached when the mass percent ratio of coal ash was 1.5%; the strength of powder mixed with coal B ash was always higher in same firing system. This obviously illustrated that coal B caused a more serious ringing problem. The relevant mechanism was that the stronger reactivity of coal B ash made cohering briquette have a more perfect crystallization and a more compact structure.
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References
K.W. YE, “Review of Three Kinds of Palletizing process,” Sintering and Pelletizing, 27 (1) (2002), 4–7.
K.W. YE, “The Present and the Forecasting of Our Country Pelletizing Industry,” Sintering and Pelletizing, 28 (1) (2003), 1.
L.S. Yuan, “Research on the mechanism and preventive measures of kiln ringing with coal gas” (Changsha, Central South University, 2006).
H.L. Zhang, “Causes for Ringing and Lumping of Grate-kiln for Oxidized Pellets and Precautions,” Metal Mine, 7 (2005), 59–61.
J.F. Song et al., “Shasteel Pellet Rotary kiln Ringing and Its Prevention,” Sintering and Pelletizing, 36 (1) (2011), 38–46.
S. Jesper et al., “Extended studies of degradation mechanisms in the refractory lining of a rotary kiln for iron ore pellet production,” ISIJ International, 32 (2012), 1519–1528.
J.Y. Fu, G.H. Bai. “Study on ringing mechanism of grate-kiln”. (Proceedings of the 2004 annual conference on sintering and pelletizing technology of China, Changsha, 2004), 35–38
B. Rakhi et al., “Assessment of ash deposition tendency in a rotary kiln using Thermo-mechanical analysis and Experimental Combustion Furnace,” Fuel, 2014, 301–307
J.F. Si et al., “structure of rings and ring-forming mechanism of rotary pelletizing kiln,” Iron and Steel, 49 (1) (2014), 17–27.
T.J. Chen et al., “Study on influence of fine coal’s performances and combustion control on circle forming in coal-fired rotary kiln for lime,” Mining and Metallurgy, 12 (4) (2003), 61–64.
X.F. Yang et al., “Mechanism Study and Countermeasures on Ringing Formation of Rotary Kiln Used to Produce Oxidized Pellets in KISC,” Sintering and Pelletizing, 34 (3) (2009), 21–24.
X.H. Fan et al., “Study of Mechanism on Ring Formation in Grate-Kiln of Acid Pellet,” Iron and Steel, 43 (3) (2008), 15–20.
F.R. Deng, “Study on coal ash fusion characteristics with TG-DSC-XRD-SEM methods,” (Zhejiang, Zhejiang University, 2005)
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© 2015 TMS (The Minerals, Metals & Materials Society)
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Yang, Yb., Zhang, Y., Zhong, Q., Jiang, T., Li, Q., Xu, B. (2015). Cohering Behavior of Coal Ash with Pellet Scrap Powder and Relationship Between Coal Ash and Kiln Ringing. In: Jiang, T., et al. 6th International Symposium on High-Temperature Metallurgical Processing. Springer, Cham. https://doi.org/10.1007/978-3-319-48217-0_17
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DOI: https://doi.org/10.1007/978-3-319-48217-0_17
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-48603-1
Online ISBN: 978-3-319-48217-0
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