Method and apparatus for fracturing brittle materials by...

Details Method and apparatus for fracturing brittle materials by... Method and apparatus for fracturing brittle materials by...

2005-06-28

2005-06-28

Jeffery, John A. (Department: 3742)

Electric resistance heating devices

Heating devices

Radiant heater

C299S014000, C175S016000, C241S001000, C225S093500

Reexamination Certificate

active

06912356

ABSTRACT:
A method of fracturing or breaking rock includes the step of directing high intensity white light (radiation) at the rock to induce thermal stress sufficient to fracture the rock. The intensity of the energy source may be varied to control the manner in which the rock fractures. An approach for generating high intensity white light includes an elongate arc chamber and an elongate concave reflector. The arc chamber and reflector may be shielded from airborne particulate matter by an air shield or a rotating or reciprocating translucent shield.

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Clark, George B., “Rock Disintegration—the Key to Mining Progress”, Mining Eng. V. 23, No. 3, pp. 47-51 Mar., 1971.

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