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| 论文编号: |
122214O120130005 |
| 第一作者所在部门: |
301组 |
| 中文论文题目: |
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| 英文论文题目: |
Effects of CaCO3 on slag flow properties at high temperatures
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| 论文题目英文: |
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| 作者: |
孔令学
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| 论文出处: |
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| 刊物名称: |
FUEL
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| 年: |
2013
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| 卷: |
109 |
| 期: |
2 |
| 页: |
76-85 |
| 联系作者: |
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| 收录类别: |
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| 影响因子: |
3.357
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| 摘要: |
Experiments were conducted on the selected ashes with different additions ofCaCO 3 for understanding
the effects onslag flowproperties including ash fusion temperatures,slag viscosity,temperat ure ofcrit-
ical viscosity and type ofslag.ICP-AES,XRD and FTIR analyses were applied todetermine the component
and structure ofthe slags.Factsage was used tocalculate liquidus temperatures inthe SiO 2–Al2O3–CaO–
FeO system and to predict formed mineral matters and proportion ofsolid phase asafunction oftemper-
atures. The results show that the liquidus temperature calculated byFactsage well predicts the variation
of ash fusion temperat ures.Slag viscosity behavior changes with increasing addition ofCaCO 3 because
the formation process of solid phase isdifferent.The Fourier transform infrared (FTIR)spectrum indicates
that Ca2+ leads to break polymerized Si–O–Siinto Si–O,sothe increasing Ca2+ in slag results inthe
decrease of viscosity above liquidus temperat ure.Below liquidus temperature,solids content decreases
with increasing addition of CaCO 3 above the temperature of critical viscosity (Tcv). Meanwhile,itisfound
that the rate ofsolid formation isrelated with Tcv and a new prediction method of Tcv based on that was
proposed. Moreover,the type ofslag changed with addition ofCaCO 3 was predictable byXRD analysis.
The prediction on ash fusion temperature, Tcv and type ofslag isexpected toserve asareference for add-
ing flux toregulate coal/ash properties suitable for slag tapping gasificationtechnology. |
| 英文摘要: |
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| 外单位作者单位: |
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| 备注: |
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