- 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 ...
An apparatus inserted in a line conducting air or steam to an air- or steam-actuated machine that feeds small controllable amounts of lubricating oil into the air or steam.
Industry:Mining
An apparatus inserted in a line conducting air or steam to an air- or steam-actuated machine that feeds small controllable amounts of lubricating oil into the air or steam.
Industry:Mining
An apparatus inserted in a line conducting air or steam to an air- or steam-actuated machine that feeds small controllable amounts of lubricating oil into the air or steam.
Industry:Mining
An apparatus inserted in the drill hole that permits engineers to make a visual inspection of the strata.
Industry:Mining
An apparatus resembling a steam engine indicator; used for drawing curved lines illustrating the action of jigs in ore beneficiation.
Industry:Mining
An apparatus that records automatically, in the form of a graph, the loss of weight during the whole reduction of iron ores.
Industry:Mining
An apparatus that slides under the broken coal and by reciprocating motion moves the coal along to a discharge point.
Industry:Mining
An apparatus to obtain the specific gravity of pearls as an indication, but not proof, of genuineness (cultured pearls tend to be denser).
Industry:Mining
An apparatus used for cutting the size of a sample. It consists of a hopper above a series of open-bottom pockets, usually 1/2 in or 3/4 in (1.27 cm or 1.91 cm) wide, which are so constructed as to discharge alternately, first into a pan to the right, and then into another pan to the left. Each time the sample is passed through the riffle, it is divided into two equal parts; the next pass of one of those parts will give a quarter of the original sample, and so on, until the sample is reduced to the desired weight.
Industry:Mining
An apparatus used for pumping water from wells either temporarily or for a permanent water supply; for moving corrosive liquids such as sufuric acid; for unwatering flooded mines; for elevating mill tailings, sands, and slimes in cyanide plants; and for handling the feed to ball mills. In operation, compressed air enters the eduction pipe and mixes with the water. As the water and air rise, the air expands and is practically at atmospheric pressure at the top of the discharge pipe. The efficiency of the air lift is calculated on the basis of the foot-pounds of work done in lifting the water, divided by the isothermal work required to compress the air.
Industry:Mining
