- 行业: Mining
- Number of terms: 33118
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- 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 ...
Liquid used to displace captured ions from the zeolite or resin on which they are held; also, in ion exchange processes, solution used for elution. In chromatography, the solution used to displace absorbed substances.
Industry:Mining
Liquid-crystalline state of some fatty acids and soaps in which bundles of long molecules are oriented into parallel layers. Smectic liquid crystals are composed of a series of planes. They glide rather than flow. When less completely oriented (nematic), they are distributed at random and flow.
Industry:Mining
Liquids into which steel is plunged in hardening. They include cold water, various oils, and water containing sodium chloride or hydroxide to increase the cooling power.
Industry:Mining
LiTaO<sub>3</sub>; a ferroelectric compound of potential value as a special electroceramic. The Curie temperature is above 350 degrees C.
Industry:Mining
Lithosphere underlying a continent that is part of a tectonic plate.
Industry:Mining
Loading machine for coal or ore that uses mechanical arms to gather mineral onto an apron pressed into the severed material. A built-in conveyor then lifts it into tubs or onto a conveyor.
Industry:Mining
Loads are raised or lowered on a slope by a stationary engine and wire rope, as in an inclined shaft. There is a double track, or three rails and turnout; the descending trip assists the engine to raise the ascending trip, thus eliminating dead load, except rope.
Industry:Mining
