Microwave assisted hard rock cutting

Details Microwave assisted hard rock cutting Microwave assisted hard rock cutting

1990-04-09

1991-03-26

Leung, Philip H.

Electric heating

Metal heating

Of cylinders

219 1055R, 299 14, H05B 680

Patent

active

050031449

ABSTRACT:
An apparatus for the sequential fracturing and cutting of subsurface volume of hard rock (102) in the strata (101) of a mining environment (100) by subjecting the volume of rock to a beam (25) of microwave energy to fracture the subsurface volume of rock by differential expansion; and , then bringing the cutting edge (52) of a piece of conventional mining machinery (50) into contact with the fractured rock (102).

REFERENCES:
patent: 3219280 (1965-11-01), Seldenrath et al.
patent: 3430021 (1969-02-01), Watson
patent: 3443051 (1969-05-01), Puschner
patent: 3601448 (1971-08-01), Stone
patent: 3614163 (1971-10-01), Anderson
patent: 3826536 (1974-07-01), Boyd et al.
patent: 4319856 (1982-03-01), Jeppson

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