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Title: Microwave assisted hard rock cutting

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).

Inventors:
 [1];  [2];  [3]
  1. Apple Valley, MN
  2. Bloomington, MN
  3. Inver Grove Heights, MN
Issue Date:
Research Org.:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
OSTI Identifier:
867753
Patent Number(s):
5003144
Assignee:
United States of America as represented by Secretary of (Washington, DC)
Patent Classifications (CPCs):
H - ELECTRICITY H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR H05B - ELECTRIC HEATING
E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21C - MINING OR QUARRYING
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
microwave; assisted; hard; rock; cutting; apparatus; sequential; fracturing; subsurface; volume; 102; strata; 101; mining; environment; 100; subjecting; beam; 25; energy; fracture; differential; expansion; bringing; edge; 52; piece; conventional; machinery; 50; contact; fractured; cutting edge; microwave energy; differential expansion; mining machine; wave energy; subsurface volume; hard rock; fractured rock; /219/299/

Citation Formats

Lindroth, David P, Morrell, Roger J, and Blair, James R. Microwave assisted hard rock cutting. United States: N. p., 1991. Web.
Lindroth, David P, Morrell, Roger J, & Blair, James R. Microwave assisted hard rock cutting. United States.
Lindroth, David P, Morrell, Roger J, and Blair, James R. Tue . "Microwave assisted hard rock cutting". United States. https://www.osti.gov/servlets/purl/867753.
@article{osti_867753,
title = {Microwave assisted hard rock cutting},
author = {Lindroth, David P and Morrell, Roger J and Blair, James R},
abstractNote = {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).},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1991},
month = {1}
}

Patent:

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