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An experimental study of mechanical screen dust suppressors

Journal Article


Abstract


  • Dust in mining environments must be considered from the viewpoint of its contribution both to explosions and to the respiratory health of mine personnel. One method of reducing dust levels is the installation of machenical screens across the full cross-section of a roadway. Using an industrial wind tunnel in which experimental conditions could be carefully controlled and monitored, a series of tests was completed to identify the operational characteristics of six types of screens which were thought to be of practical use. These tests included; the evaluation of the pressure drop characteristics of the various screens for different air flowrates, the effect on these characteristics of stone dust, the effectiveness of cleaning the contaminated screens and, finally, the determination of the screens' efficiency in suppressing stone and coal dust. The final set of tests required the development of a seeding system for the wind tunnel and the use of personal dust samplers to measure both the total and respirable components of dust on either side of the screen. This paper provides details of these tests and the conclusions which were drawn from the results. © 1985 Elsevier Science Publishers B.V.

Publication Date


  • 1985

Citation


  • Johnston, A. J., & Aziz, N. I. (1985). An experimental study of mechanical screen dust suppressors. Mining Science and Technology, 2(2), 91-104. doi:10.1016/S0167-9031(85)90324-X

Scopus Eid


  • 2-s2.0-0022044538

Web Of Science Accession Number


Start Page


  • 91

End Page


  • 104

Volume


  • 2

Issue


  • 2

Abstract


  • Dust in mining environments must be considered from the viewpoint of its contribution both to explosions and to the respiratory health of mine personnel. One method of reducing dust levels is the installation of machenical screens across the full cross-section of a roadway. Using an industrial wind tunnel in which experimental conditions could be carefully controlled and monitored, a series of tests was completed to identify the operational characteristics of six types of screens which were thought to be of practical use. These tests included; the evaluation of the pressure drop characteristics of the various screens for different air flowrates, the effect on these characteristics of stone dust, the effectiveness of cleaning the contaminated screens and, finally, the determination of the screens' efficiency in suppressing stone and coal dust. The final set of tests required the development of a seeding system for the wind tunnel and the use of personal dust samplers to measure both the total and respirable components of dust on either side of the screen. This paper provides details of these tests and the conclusions which were drawn from the results. © 1985 Elsevier Science Publishers B.V.

Publication Date


  • 1985

Citation


  • Johnston, A. J., & Aziz, N. I. (1985). An experimental study of mechanical screen dust suppressors. Mining Science and Technology, 2(2), 91-104. doi:10.1016/S0167-9031(85)90324-X

Scopus Eid


  • 2-s2.0-0022044538

Web Of Science Accession Number


Start Page


  • 91

End Page


  • 104

Volume


  • 2

Issue


  • 2