- Industry: Mining
- Number of terms: 33118
- Number of blossaries: 0
- Company Profile:
The U.S. Bureau of Mines (USBM) was the primary United States Government agency conducting scientific research and disseminating information on the extraction, processing, use, and conservation of mineral resources.
Founded on May 16, 1910, through the Organic Act (Public Law 179), USBM's missions ...
Molten slag broken up into granules and quick quenches. Three general methods of granulation are: (1) running the molten slag into a pit of water; (2) using a jet of highpressure water to breakup the stream of molten slag as it falls into the pit; and (3) using a mechanical revolving device with relatively small amounts of water.
Industry:Mining
Chute driven diagonally across to connect a breast manway with a manway chute.
Industry:Mining
Finely crushed coal mixed with sufficient water to form a fluid. To use coal slurry pumped through a pipeline as fuel, expensive drying and dewatering pretreatment has been necessary. Recent tests indicate that coal slurry can be fired in a cyclone furnace as it is received from a pipeline; i.e., a coal and water mixture.
Industry:Mining
Manual removal of selected fraction of coarse run-of-mine ore, usually performed on picking belts (belt conveyors) after screening away small material, perhaps washing off obscure dirt, and crushing pieces too large for the worker to handle. Hard sorting (Rand) describes picking of banket when up to 30% of waste rock is removed.
Industry:Mining
In mineral processing, a pneumatic flotation cell 7 to 9 ft (2.1 to 2.7 m) deep.
Industry:Mining
MgAl<sub>2</sub>O<sub>4</sub>; melting point, 2,135 degrees C; sp gr, 3.6; thermal expansion (100 to 1,000 degrees C), 9.0 X 10<sub>-6</sub>. This compound is the type mineral of the spinel group.
Industry:Mining
Eng. A tool for extracting a pebble or broken tool from the bottom of a borehole. It consists of two spiral steel blades arranged something like a corkscrew.
Industry:Mining
Fire occurring in a roadway or at the coal face in a mine. Such fires may or may not be easily accessible. They may be in the roof of a roadway or seam, or in the kerf of a machine-cut face. However, they are quite distinct in their initiation from gob fires. An open fire may be ignited by a blown-out shot, electrical failure, or from sparks produced by friction.
Industry:Mining
