Fine Grinding of Coal with a Stirred Ball Mill.
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- HIRAJIMA Tsuyoshi
- Faculty of Engineering, Hokkaido University
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- TSUNEKAWA Masami
- Faculty of Engineering, Hokkaido University
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- YONEDA Tetsuro
- Faculty of Engineering, Hokkaido University
Bibliographic Information
- Other Title
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- 媒体撹はんミルによる石炭の微粉砕
- バイタイ カクハン ミル ニヨル セキタン ノ ビフンサイ
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Abstract
In production of super-clean coal by any physical coal-cleaning process, the feedcoal must be micronized to liberate finely disseminated mineral matter. One of the most efficient devices for micronizing coal is a stirred ball mill. Using the laboratory mill with a relatively high media loading (80 % filling), small grinding media (less than 1 mm diameter), and three coals, effects of some parameters such as media size, stirring speed, and pulp density on the grinding of coals have been studied. The product with a mediansize of 2μm was obtained at a suitable operating conditions with a mean residence time of 6 min. The wear loss of the grinding media and vessel depended strongly on the amount of the hard minerals disseminated in coal, such as quartz, pyrite and iron oxide.
Journal
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- Shigen-to-Sozai
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Shigen-to-Sozai 113 (8), 619-623, 1997
The Mining and Materials Processing Institute of Japan
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Details 詳細情報について
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- CRID
- 1390001206015042944
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- NII Article ID
- 10002284105
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- NII Book ID
- AN10062646
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- ISSN
- 18806244
- 09161740
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- NDL BIB ID
- 4285291
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed