Dust Control on Longwall Shearers Using Water-jet Assisted Cutting.
Taylor CD; Kovscek PD; Thimons ED
MISSING :9 pages
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 190 psi and with water-jet-assisted cutting pressures ranging from 1,000 to 6,000 psi. At water pressures of 3,000 psi and higher, dust concentrations were reduced by as much as 85 pct 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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