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- W4229038930 abstract "Compared to iron ore acidic pellet production, the deposit problem in kiln became more severe to produce iron ore fluxed pellets. This study characterized the deposit samples in a grate-kiln process for iron ore fluxed pellet production. The deposited samples were analyzed by chemical analysis, XRD, SEM-EDS, and thermodynamic software. The deposits contained mainly hematite particles embedded in bonding phases, mainly comprising silicates with different compositions. There was a significant change in the composition of bonding phases in deposits when the CaO content increased in the iron ore pellets. The bonding phases of deposits for fluxed pellets had higher CaO and Fe 2 O 3 contents than acidic iron ore pellets. For the deposit samples from iron ore fluxed pellet production, the area of bonding phases in the phase diagram of CaO-Al 2 O 3 -SiO 2 -5wt%MgO moved to the higher CaO part, which had a lower liquid temperature. The change in the bonding phase caused a high proportion of formed liquid phases in the deposits, then led to severe deposit formation in the grate-kiln production plant. • Chemical composition and microstructure of deposits for fluxed pellets were analyzed. • The characterization of deposits for fluxed pellets was compared with acidic pellets. • The bonding phases of deposits for fluxed pellets have higher CaO and Fe 2 O 3 contents. • Change of bonding phase caused a high proportion of formed liquid phases in deposits." @default.
- W4229038930 created "2022-05-08" @default.
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- W4229038930 date "2022-05-01" @default.
- W4229038930 modified "2023-10-16" @default.
- W4229038930 title "Characterization and comparison of deposits in a coal-fired rotary kiln for iron ore fluxed pellets and acidic pellets productions" @default.
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- W4229038930 doi "https://doi.org/10.1016/j.powtec.2022.117454" @default.
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