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| Effect of Al2O3 on Fusibility of Slag in Radiation Zone of ISA Waste Heat Boiler |
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Received:November 17, 2018
Revised:November 20, 2018
Accepted:November 21, 2018
Published Online:January 24, 2019
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| DOI：doi：10.3969/j.issn.1007-7545.2019.02.003 |
| KeyWord:Al2O3; waste heat boiler; radiation zone; slag; fusibility; ISA Process |
| Author | Institution |
| huangxiaoyan |
省部共建复杂有色金属资源清洁利用国家重点实验室 |
| Hujianhang |
昆明理工大学冶金与能源工程学院 |
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| Abstract: |
| With slag in radiation zone of copper smelting waste heat boiler as research object, effect of Al2O3 addition on fusibility of slag samples at high temperature was studied. The results show that melting temperature of slag sample rises with increase of Al2O3 ratio (1%~16.7%). When Al2O3 reaches 20 % at temperature of 1 370 ℃, the slag sample does not present softening state. Slag samples with 16.7% Al2O3 addition were kept being burned for one hour at 1 100 ℃, most of the slag samples are still in Fe3O4 phase, and only weak Fe-Al spinel peaks appear. The characteristic peaks of Fe-Al spinel are more obvious when temperature reaches 1 200 ℃, that is, a large amount of Fe-Al spinel is formed at the target temperature. Thermodynamic equilibrium calculation results carried out by Fact Sage 7.2 accord with XRD results. |
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