Ignition and control of burning of coal mine refuse
Technical Report
·
OSTI ID:7280564
Laboratory experiments showed that air permeates more readily segregated than nonsegregated refuse and that air permeability is greater in coarse than in fine particle refuse. Minus 3/sup 1///sub 2/-inch refuse ignites spontaneously more readily than minus /sup 1///sub 4/-inch /sup 1/inch refuse. The burning of a 1,000-pound conical coal pile was controlled by capping with an 18-inch-thick layer of minus /sup 1///sub 4/-inch refuse containing 37 percent combustible. In field trials, the burning of refuse at operating mines was controlled by capping with a layer of fine refuse. Water, applied as a spray or by injection, quenched surface flames and cooled the burning waste. Inspection of refuse piles at operating mines showed that the spontaneous ignition tendency is affected by the exposed surface relative to the total volume and the segregation of particles during dumping.
- Research Organization:
- Bureau of Mines, Washington, D.C. (USA)
- OSTI ID:
- 7280564
- Report Number(s):
- BM-RI-6758
- Country of Publication:
- United States
- Language:
- English
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