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- 三原 直人
- 名古屋大学大学院工学研究科エネルギー理工学専攻
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- KUCHAR Dalibor
- Department of Chemical Engineering, Nagoya University
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- 松田 仁樹
- 名古屋大学大学院工学研究科エネルギー理工学専攻
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- 岩下 哲志
- 矢橋工業株式会社
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- KYAW Kyaw
- Yabashi Industries, Co., Ltd.
書誌事項
- タイトル別名
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- Formation Characteristic of Calcium Sulfide by Reductive Decomposition of Calcium Sulfate
- リュウサン カルシウム ノ カンゲン ネツ ブンカイ ニ ヨル リュウカ カルシウム セイセイ トクセイ
この論文をさがす
抄録
For the purpose of waste gypsum board recycling and selective generation of CaS, reductive decomposition behavior of CaSO4.2H2O under CO-CO2-N2 atmosphere was investigated by using a thermogravimetric analyzer.<BR>As a result, it was found that the reductive decomposition of CaSO4·2H2O to CaS in the presence of CO started at temperatures above 1023 K. However, at a temperature above 1173 K, CaS oxidation to CaO was observed and the oxidation was considered to proceed either by reaction of CaSO4 with CaS yielding CaO or by reaction of CaS with CO2 yielding CaO. Hence, to avoid the CaS oxidation, it was considered that the decomposition temperature should be kept below 1173 K. Furthermore, it was found that CaS generation increased with an increase in CO gas concentrations and the conversion of CaSO4.2H2O to CaS greater than 90% was obtained at a temperature of 1073 K, under CO : 10% and N2 : 90% atmosphere.
収録刊行物
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- Journal of the Society of Inorganic Materials, Japan
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Journal of the Society of Inorganic Materials, Japan 14 (329), 214-220, 2007
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詳細情報 詳細情報について
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- CRID
- 1390282680366729600
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- NII論文ID
- 10018921351
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- NII書誌ID
- AA11416367
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- ISSN
- 13453769
- 21854378
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- NDL書誌ID
- 8885916
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- データソース種別
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- JaLC
- NDL
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可