Thursday, February 11, 2010
Exploration diamond drilling differs from other geological drilling where in that a solid core is extracted from depth, for examination on the surface. The key technology of the diamond drilling is the actual diamond bit itself. It is usually composed of industrial diamonds set into a soft metallic matrix. The diamonds are scattered all over the matrix, and the action relies on the matrix to slowly wear during the drilling, so as to expose more diamonds.
The bit is mounted onto a drill stem, which is in turn connected to a rotary drill. Water is injected into the drill pipe in order to wash out the rock cuttings produced by the bit. An actual diamond bit is a complex affair with many channels for washing.Labels: Exploration Diamond drilling
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