Volatilization Behaviors of Lead from CaO-SiO<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub> Molten Slag in an N<sub>2</sub>-H<sub>2</sub>S Atmosphere
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- Kageyama Hiroki
- Department of Energy Engineering and Science, Nagoya University
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- Osada Shohichi
- Department of Energy Engineering and Science, Nagoya University
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- Kubota Mitsuhiro
- Department of Energy Engineering and Science, Nagoya University
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- Matsuda Hitoki
- Department of Energy Engineering and Science, Nagoya University
Bibliographic Information
- Other Title
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- N<sub>2</sub>-H<sub>2</sub>S雰囲気におけるCaO-SiO<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub>溶融スラグからの鉛の揮発挙動
- N ₂-H ₂ S フンイキ ニ オケル CaO-SiO ₂-Al ₂ O ₃ ヨウユウ スラグ カラ ノ ナマリ ノ キハツ キョドウ
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Abstract
The rate of volatilization of a lead compound from CaO-SiO2-Al2O3 molten slag was measured in an N2-H2S atmosphere at temperatures of 1673-1773K. The composition of the slag sample was adjusted to CaO 20-30wt%, SiO2 30-60wt% and Al2O3 20-40wt% with an initial PbO content of 2000mg · kg−1, which simulated molten slag from the gasification-melting of MSW. The rate of volatilization of lead from the molten slag was determined by the time-change of the content of PbO remaining in the slag.<br>Results showed that the PbO in CaO-SiO2-Al2O3 molten slag volatilized as PbS in the N2-H2S atmosphere and the rate of volatilization of PbS was higher than that of volatilization of PbO in an N2-O2 atmosphere. The apparent rate constant of volatilization of PbS increased with an increase in H2S partial pressure and was higher for molten slag with high-CaO content and low viscosity. Moreover, at the same partial pressure of H2S and HCl, the apparent rate constants of volatilization of PbS and PbCl2 from molten slag were nearly equal and increased with rises in temperature.
Journal
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- Journal of the Japan Society of Material Cycles and Waste Management
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Journal of the Japan Society of Material Cycles and Waste Management 24 (1), 1-6, 2013
Japan Society of Material Cycles and Waste Management
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Details 詳細情報について
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- CRID
- 1390001205315615232
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- NII Article ID
- 10031138194
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- NII Book ID
- AA12384878
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- COI
- 1:CAS:528:DC%2BC3sXnsVCgt74%3D
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- ISSN
- 18835899
- 18835856
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- NDL BIB ID
- 024310426
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed