Novel Approach for Suppressing Cutting Dust Using Foam on a Fully Mechanized Face with Hard Parting.
The cutting dust created by the shearer drum is the main source of dust on a fully mechanized coal face. However, overexposure to respirable dust may cause pneumoconiosis in coal workers, while coal dust may lead to serious explosions. The fully mechanized face known as II1051 Face, found at the Zhu...
| Publicado en: | Journal of Occupational & Environmental Hygiene Vol. 11; no. 3; pp. 154 - 165 |
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| Autores principales: | , , , |
| Formato: | equations & formulas pictorial research tables/charts Journal Article |
| Publicado: |
Taylor & Francis Ltd
Mar2014
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=104024160&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 104024160 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 15459624 V1L jtl: Journal of Occupational & Environmental Hygiene issn: 15459624 maglogo: Y pubinfo: dt: Mar2014 vid: 11 iid: 3 pid: 377 pub: Taylor & Francis Ltd place: Philadelphia, Pennsylvania artinfo: ui: 104024160 94420814 10.1080/15459624.2013.848039 NLM24521065 104024160 ppf: 154 ppct: 11 formats: fmt: @attributes: type: P tig: atl: Novel Approach for Suppressing Cutting Dust Using Foam on a Fully Mechanized Face with Hard Parting. aug: au: Wang, Hetang Wang, Deming Wang, Qingguo Jia, Zhiqiang affil: Key Laboratory of Gas and Fire Control for Coal Mines of Ministry of Education, Faculty of Safety Engineering, State Key Laboratory of Coal Resources and Safe Mining, China University of Mining & Technology, Xuzhou, Jiangsu, China sug: subj: Occupational Exposure Prevention and Control Respiratory Protective Devices Dust Fossil Fuels Human China Pneumoconiosis Prevention and Control Product Evaluation Descriptive Statistics Confidence Intervals Odds Ratio Funding Source ab: The cutting dust created by the shearer drum is the main source of dust on a fully mechanized coal face. However, overexposure to respirable dust may cause pneumoconiosis in coal workers, while coal dust may lead to serious explosions. The fully mechanized face known as II1051 Face, found at the Zhuxianzhuang Coal Mine located in east China, generates dust by way of the drum on a high-power shear. The coal seam involves hard rock parting so there is a high concentration of cutting dust when the shearer is working. Thus, we developed a new foam dust suppression method with an air self-suction system based on an analysis of the dust generation characteristics that suppressed the shearer cutting dust level. The new foam system was evaluated in a field test where the dust concentration was measured at two points. The results showed that the foam reduced the cutting dust concentration significantly. The respirable dust exposure levels were reduced from 378.4 mg/m3to 53.5 mg/m3and the visibility was enhanced dramatically. Thus, we conclude that our new foam system is highly efficient at capturing cutting dust, and it has a much lower water consumption. [Supplementary materials are available for this article. Go to the publisher's online edition ofJournal of Occupational and Environmental Hygienefor the following free supplemental resource: Contact angle of cutting dust sample, migration trajectory of cutting dust, technological process for suppressing shearer cutting dust using foam, the layout of the foam dust suppression system on coal face, real object of the air self-suction type foam generator, the special foam nozzle used for shearers, relevant experimental results of the air self-suction foam system.] pubtype: Academic Journal doctype: equations & formulas pictorial research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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