- 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 washbox in which the pulsating motion is produced by the intermittent admission of compressed air to the surface of the water following a principle introduced by Baum.
Industry:Mining
A washbox in which the pulsating motion is produced by the reciprocating movement of a diaphragm.
Industry:Mining
A washbox in which the screen plate supporting the bed of material under treatment is moved up and down in water.
Industry:Mining
A washbox to clean small coal, in which the pulsating water is made to pass through a layer of graded material, such as feldspar, situated on top of the screen plate. See: jig
Industry:Mining
A washbox to which the product (or a portion thereof) of a previous washing operation is fed for additional treatment.
Industry:Mining
A washer comprising a cylinder rotating slowly about an axis that is slightly inclined to the horizontal, and into which the raw coal, with a current of water or of a suspension, is fed near its upper end. The clean coal is carried by the water or suspension to the lower 244 end of the cylinder over a scroll that conveys the reject to the upper end of the cylinder.
Industry:Mining
A washer consisting of a steel ring cut through and bent into helical form, which prevents a nut from unscrewing.
Industry:Mining
A washer in which separation takes place under the influence of an upward current of water or dense medium.
Industry:Mining
A washer in which water is forced upward and then downward through a screen by the action of a plunger in an adjoining compartment. Although these machines are still in use, the term "jig washer" is now applied to the fixed-screen, air-pulse jig, which is directly descended from the first Baum washer used in 1892.
Industry:Mining
A washer that holds a rotating part from sideward movement in its bearings.
Industry:Mining
