- 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 ...
Box that receives feed from launder, pipe, or pump and splits it into parallel mill circuits. Box attached to deck of shaking table, which receives sands and distributes them along top of deck at feed end.
Industry:Mining
Brake in which two brakeshoes are curved to the brake path and anchored near the centerline of the drum.
Industry:Mining
Braking accomplished by reversing the motor connections, at the same time inserting appropriate resistance in the rotor circuit to adjust the negative torque to the desired 760 value. With this method, complete control of deceleration is obtained, even to a dead stop. Its greatest disadvantage is that it is expensive in current consumption. It is unsuitable for winders sited at depth, owing to the heat given out.
Industry:Mining
Braz. In the diamond fields, brown pebbles consisting of a hydrated phosphate, or of titanium and zirconium oxides; regarded as good indications of the presence of diamonds.
Industry:Mining
Braz. In the Itabira Region of Minas Gerais, schistose, specular hematite forming alternate bands with sugary quartz. Some of the beds are auriferous and contain goldpalladium alloys with manganese oxides, native copper, and talc. Writers have given the rocks various names, such as iron-glance schist, jacutinga, quartz itabirite, and bandererz.
Industry:Mining
Breakdown into separate phases of a relatively stable emulsion, by such means as flocculation with a surface-active agent or removal of an emulsifying agent.
Industry:Mining
Breaking down coal at the face with hammers and wedges instead of by blasting.
Industry:Mining
Breaking down large pieces of asbestos by means of short blastholes judiciously placed.
Industry:Mining
