| Project/Area Number |
20360401
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Earth system and resources enginnering
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| Research Institution | Hokkaido University |
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Principal Investigator |
HIROYOSHI Naoki Hokkaido University, 大学院・工学研究院, 教授 (50250486)
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| Co-Investigator(Kenkyū-buntansha) |
TSUNEKAWA Masami 北海道大学, 大学院・工学研究院, 教授 (40002026)
ITO Mayumi 北海道大学, 大学院・工学研究院, 准教授 (10339690)
IGARASHI Toshifumi 北海道大学, 大学院・工学研究院, 教授 (90301944)
FUKUSHIMA Masami 北海道大学, 大学院・工学研究院, 准教授 (40344113)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥17,940,000 (Direct Cost: ¥13,800,000、Indirect Cost: ¥4,140,000)
Fiscal Year 2010: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2009: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2008: ¥9,360,000 (Direct Cost: ¥7,200,000、Indirect Cost: ¥2,160,000)
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| Keywords | 石炭 / 黄鉄鉱 / カテコール / 薄膜 / 脱硫 / 鉱山酸性汚濁水 / Si / Ti / 薄膜形成 / サイクリックボルタンメトリ / 酸化還元 |
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| Research Abstract |
Pyrite associated with coal generates SOx causing acid rain during coal combustion. In coal preparation, pyrite is rejected as a gangue mineral using the physical separation technique such as froth flotation and wasted into tailing pond. In the froth flotation, pyrite is frequently entrapped in froth together with valuable mineral due to its hydrophobic nature. Formation of acid mine drainage due to the air-oxidation of pyrite in tailing pond is also a serious problem. In the present study, carrier-microencapsulation (CME) is proposed to suppress both the floatability and oxidation of pyrite in coal preparation.
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