- 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 electromagnetic vibrator used in shaking table mechanisms, concrete consolidation, ore feeders, and screens.
Industry:Mining
An electronic device that signals an operator when a bin is filled to capacity.
Industry:Mining
An electronic logging device consisting of a scintillation-type gamma-ray detecting unit built into a container small enough to be lowered into a borehole.
Industry:Mining
An electronic system which weighs individually loaded coal wagons as they roll over a rail scale, feeding the information into a totalizing printer, which automatically prints out gross and net weights. It employs hermetically sealed load cells which accurately convert physical weight into electrical impulses.
Industry:Mining
An electronic system which weighs individually loaded coal wagons as they roll over a rail scale, feeding the information into a totalizing printer, which automatically prints out gross and net weights. It employs hermetically sealed load cells which accurately convert physical weight into electrical impulses.
Industry:Mining
An electrostatic device whereby negatively charged dust or fume particles are attracted to a positively charged wire electrode enclosed in a flue, the walls of which act as the other electrode. Widely used for treating sulfuric acid mist, cement mill dust, powerplant fly ash, metallurgical fumes, etc.
Industry:Mining
An electrostatic process under development, in which fine-size dry coal is blown rapidly past a copper baffling device that imparts positive triboelectric charges on the coal and negative charges on the associated mineral matter. The material is introduced into an electrostatic separator, where it is separated.
Industry:Mining
An electrostatic process under development, in which fine-size dry coal is passed through an ionized field that selectively charges the coal and the liberated mineral matter. The output of the ionizer is then fed into an electrostatic separator where the coal and impurities are separated.
Industry:Mining
An electrowinning method developed by the U.S. Bureau of Mines for producing highquality tungsten powder directly from ore. A strong electric current separates the metal from the ore, which has been placed in solution, and deposits it as a pure powder on an electrode. Electrowon tungsten compares favorably with hydrogen-reduced tungsten.
Industry:Mining
An element belonging to the alkaline earth metals. Symbol, Be. Beryl and bertrandite are the most important commercial sources of the element and its compounds. Aquamarine and emerald are the precious forms of beryl. Used in nonsparking tools, high-speed aircraft, missiles, spacecraft, communications satellites, and X-ray lithography for 297 microminiature integrated circuits, as well as in nuclear reactors and computers. Beryllium and its salts are toxic.
Industry:Mining
