Dust Control on Longwall Shearers Using Water-Jet-Assisted Cutting

Kovscek P D, ; Thimons E D,
Organization: The Australasian Institute of Mining and Metallurgy
Pages: 7
Publication Date: Jan 1, 1988
The Bureau of Mines equipped a longwall shearer with a water- jet-assisted cutting system and measured dust levels during the cutting of a simulated coal block. The block was cut dry, at a conventional water spray pressure of 1 MPa and with water-jet-assisted cutting pressures ranging from 7 to 40 MPa. At water pressures of 20 MPa and higher, dust concentrations were reduced by as much as 85 % via water-jet-assisted cutting in comparison with conventional water sprays. This reduction was achieved without any increase in the water flow rate.
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