| New Respirable Dust Suppression Systems for Coal Mines |
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| 作者姓名： | XIE Yao-she FAN Gao-xian DAI Jun-wei SONG Xiao-bo |
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| 作者单位： | [1]School of Mining and Safety Engineering China University of Mining ＆ Technology Xuzhou Jiangsu 221008, China [2]Jining Mining Industry Group Co Ltd Jining Shandong 272100, China |
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| 摘 要： | Dust suppression in coal mines is a worldwide problem which has not been solved effectively. The application of negative pressure secondary dust removal （NPSDR） is a breakthrough in the coal mine safety field. In this paper, NPSDR technology and ultrasonic dust suppression systems are introduced. High pressure water is supplied to the NPSDR device which is mounted on the shearer. A negative pressure field is formed in the device. At the same time, the dusty air around the shearer drum will be sucked into, and purged from, the NPSDR device by the negative pressure field. An ultrasonic dust suppression system uses water and compressed air to produce micron sized droplets which suppress respirable coal dust effectively. The NPSDR technology can be used for shearer dust suppression while ultrasonic dust suppression can be applied in areas such as the transportation positions. These dust suppression methods have the following advantages： high efficiency, wide applicability, simple structure, high reliability and low cost.
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| 关 键 词： | 采矿 灰尘控制 超音速 压缩空气 |
| 收稿时间： | 6 November 2006 |
| 修稿时间： | 2006-12-06 |
New Respirable Dust Suppression Systems for Coal Mines |
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| XIE Yao-she FAN Gao-xian DAI Jun-wei SONG Xiao-bo.New Respirable Dust Suppression Systems for Coal Mines[J].Journal of China University of Mining and Technology,2007,17(3):321-325. |
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| Authors: | XIE Yao-she FAN Gao-xian DAI Jun-wei SONG Xiao-bo |
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| Affiliation: | 1. School of Mining and Safety Engineering, China University of Mining & Technology, Xuzhou, Jiangsu 221008, China;2. Jining Mining Industry Group Co Ltd, Jining, Shandong 272100, China |
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| Abstract: | Dust suppression in coal mines is a worldwide problem which has not been solved effectively. The application of negative pressure secondary dust removal (NPSDR) is a breakthrough in the coal mine safety field. In this paper, NPSDR technology and ultrasonic dust suppression systems are introduced. High pressure water is supplied to the NPSDR device which is mounted on the shearer. A negative pressure field is formed in the device. At the same time, the dusty air around the shearer drum will be sucked into, and purged from, the NPSDR device by the negative pressure field. An ultrasonic dust suppression system uses water and compressed air to produce micron sized droplets which suppress respirable coal dust effectively. The NPSDR technology can be used for shearer dust suppression while ultrasonic dust suppression can be applied in areas such as the transportation positions. These dust suppression methods have the following advantages high efficiency, wide applicability, simple structure, high reliability and low cost. |
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| Keywords: | dust suppression negative pressure ultrasonic compressed air respirable dust |
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