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- Fujimoto Hidekazu
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University
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- Matsukata Masahiko
- Department of Applied Chemistry, Waseda University
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- Ueyama Korekazu
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University
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抄録
Coal particles contain oxygen functional groups such as hydroxyl, carbonyl, and carboxyl, and mineral matters that contribute surface hydrophilicity. The occurrence of them varies considerably from coal to coal, hence the characteristics of column flotation changes from coal to coal. We expected that the characteristics of column flotation could be simply evaluated by using the area fraction of oxygen functional group sites on the exterior surface of the coal particles.<BR>In this work, we conducted column flotation for Shanxi (anthracite), Tyanfu (bituminous), Blair Athol (bituminous), Datong (bituminous), and Illinois (brown coal). The order of carbonaceous materials recovery was found to be Tyanfu > Shanxi > Blair Athol > Datong > Illinois. We also evaluated the area fraction of hydroxyl group on the exterior surface of the coal particles, αex-OH, and that in the coal particles, αin-OH. For Datong coal, the value of αex-OH was larger than that of αin-OH. It means that Datong coal was slightly oxidized. The order of carbonaceous materials recovery was inconsistent with that of αex-OH for the three kinds of bituminous coal. For Shanxi anthracite coal, the flotability is evaluated by considering the wettability of the hydrophobic sites as well as the hydrophilic sites.
収録刊行物
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- JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
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JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 32 (2), 204-210, 1999
公益社団法人 化学工学会
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詳細情報 詳細情報について
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- CRID
- 1390282679541014272
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- NII論文ID
- 10002067421
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- NII書誌ID
- AA00709658
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- COI
- 1:CAS:528:DyaK1MXisleitrg%3D
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- ISSN
- 18811299
- 00219592
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- NDL書誌ID
- 4702191
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
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- 使用不可