Mining or in situ disintegration of hard material – Hard material disintegrating machines – With material-handling means
Patent
1994-06-14
1995-06-27
Bagnell, David J.
Mining or in situ disintegration of hard material
Hard material disintegrating machines
With material-handling means
299 18, 299 19, E21C 4704, E21C 4126
Patent
active
054274397
ABSTRACT:
A surface mining system for mining successive, generally parallel cuts in a coal or similar mineral seam includes at least one endless belt conveyor disposed on a spoil pile directly adjacent the cut being excavated and a second conveyor extending from the first conveyor to a material storage site. Material is transferred to the first conveyor by an excavator working the longitudinal extent of the cut and transferring excavated material to a moveable crusher and conveyor apparatus which transfers the material to a second moveable crusher and conveyor apparatus. The second moveable crusher and conveyor apparatus discharges material onto the conveyor disposed on the spoil pile. The mineral seam may be mined by progressively advancing into the seam with successive parallel cuts and progressively moving the conveyor system onto newly formed portions of the spoil pile. A combination conveyor and crusher apparatus is arranged such that the conveyor and crusher unit are mounted on an undercarriage in counterbalancing relationship to each other.
REFERENCES:
patent: 4150852 (1979-04-01), McCoy
patent: 4261119 (1981-04-01), Kubo et al.
patent: 4486049 (1984-12-01), Lubrich et al.
Mining Engineering, "Portable Crusher for Open Pit and Quarry Operations", Dec. 1960, pp. 1271-1274.
Coal Age "Three Innovations at C&K Coal", Sep. 1981, pp. 83-89.
Atlantic Richfield Company
Bagnell David J.
Martin Michael E.
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