NIOSHTIC-2 Publications Search
A new hardrock cutting technology.
Thimons-ED; Kogelmann-WJ; Virgona-JE; Weakly-LA
World Min Equip 1991 Jun; :1
This U.S. Bureau of Mines paper summarizes tests of the effectivenss of polycrystalline diamond composite (pcd) bits in cutting oil shale and the possible synergy of these bits and water-jet-assisted cutting. The tests have shown convincingly that the potential for this technology is considerable. Experience with rotary pcd drill bits in the unical oil shale mine in Colorado has shown that these cost some 10 times more than conventional carbide bits, but have a life expectancy of about 80 times longer. In this way, the combination of water-jet-assist and pcd bits may represent the first major advance in hardrock cutting technology since the introduction of tungsten carbide tools 40 years ago.
OP; Journal Article
World Mining Equipment