- 産業: 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 ...
A crushing machine consisting of a vertical stamp shaft that is forced down to strike its blow, and lifted up preparatory to striking the next, by a steam piston.
Industry:Mining
A crushing machine similar to the double-roll crusher with the difference that springs are fixed to the bearings of one roll.
Industry:Mining
A crushing system that can be a fully mobile unit or a permanently fixed unit at the point of mining so that the mined material can be transported out of the pit by a conveyor system.
Industry:Mining
A crushing unit in which a rapidly moving rotor projects the charged material against steel plates; impact mills find use in the size reduction of such materials as coal, feldspar, perlite, etc. Compare: disintegrator; hammermill.
Industry:Mining
A cryptocrystalline variety of lepidocrocite; formed by oxidation of iron sulfides as pale yellow to black crusts, stalactites, or earthy masses.
Industry:Mining
A cryptocrystalline variety of lepidocrocite; formed by oxidation of iron sulfides as pale yellow to black crusts, stalactites, or earthy masses.
Industry:Mining
A crystal bent or twisted out of its normal shape, so that the angle between its crystal faces may differ widely from those on the regular form.
Industry:Mining
A crystal characterized by covalent bonding--the type of atomic bonding resulting from the sharing of electrons by neighboring atoms.
Industry:Mining
A crystal designed to oscillate at an integral multiple of its fundamental frequency.
Industry:Mining
