Method of and an arrangement for longwall mining

Details Method of and an arrangement for longwall mining Method of and an arrangement for longwall mining

1979-05-02

1981-02-17

Purser, Ernest R.

Mining or in situ disintegration of hard material

With separation of materials

Separation below surface of earth or water

299 18, 299 43, E21C 3520

Patent

active

042511089

ABSTRACT:
Material removed from a longwall mining face is comminuted to obtain particles of predetermined size. A hydraulic fluid is circulated through the thusly obtained particles at a pick-up location so as to entrain and convey the particles from the pick-up location through a conduit to a separating location. At the separating location the hydraulic fluid is separated from the particles. The separated hydraulic fluid is recirculated from the separating location back to the pick-up location and into entraining contact with additional particles at the pick-up location.

REFERENCES:
patent: 3260548 (1966-07-01), Reichl
patent: 3845990 (1974-11-01), McCain
patent: 3924895 (1973-12-01), Leasure
patent: 4032195 (1976-07-01), Kilroy
Dahl and Petry "Update on Slurry Transporting From Face to Cleaning Plant" Mining Company Journal, 12/77 pp. 14-16 & 18.

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