Moving coal to the surface
Journal Article
·
· Coal Age; (United States)
OSTI ID:6140854
Points out that with pneumatic and hydraulic haulage still largely in the experimental stage and with rail haulage in decline, belt conveyors remain the backbone of underground coal mine transportation. A recent survey revealed that 85% to 90% of all underground coal mines use conveyor belts for panel and main line transportation. Discusses the design and operation of stageloaders, which vary from 50 to about 120 ft. long. Discloses that mine operators are moving from wound rotor motors to squirrel cage motors used in conjunction with soft start packages on their drive units. In order to reduce downtime on longwall faces caused by large lumps of coal, most modern longwall faces are equipped with side discharge systems.
- OSTI ID:
- 6140854
- Journal Information:
- Coal Age; (United States), Journal Name: Coal Age; (United States) Vol. 87:12; ISSN COLAA
- Country of Publication:
- United States
- Language:
- English
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