- 行业: 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 mill in which ores are ground by means of a heavy stone dragged around on a circular or annular stone bed.
Industry:Mining
A mill in which the crushing is done between two cup-shaped plates that revolve on shafts set at a small angle to each other. These disks revolve with the same speed in the same direction and are so set as to be widest apart at the bottom. Feed is from the center, and the material is gradually crushed as it nears the edge and is then thrown out by centrifugal force.
Industry:Mining
A mill that contains four rolls arranged one above the other; i.e., two small-diameter working rolls supported by larger diameter back-up rolls above and below.
Industry:Mining
A mill that depends on purchased ores mostly or entirely for processing rather than on its own organizational source.
Industry:Mining
A mill used in the foundry for the grinding of coke for the production of blacking.
Industry:Mining
A mill, concentrator, or smelter that purchases ore or partly processed mineral for treatment in terms of an appropriate contract, priced on tonnage, complexity of operation, permissible losses, and specification of feed, product, and (perhaps) lost tailings.
Industry:Mining
A milling cutter on which the cutting face is at an angle with regard to the axis of the cutter.
Industry:Mining
A mine car constructed with one hinged end that lifts up as the car is tilted down, permitting the coal, ore, and waste to run out.
Industry:Mining
A mine car equipped with a swivel coupling and generally used with a rotary dump. One or more cars are pulled into the rotary dump, which turns through 180 degrees and the coal is emptied out.
Industry:Mining
