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United States Bureau of Mines
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 ...
Removal by chipping of surface blemishes from ingots or blooms.
Industry:Mining
Removal from atmosphere of mill or from transfer points where dust is thrown up. Partially closed ventilating systems are used, which incorporate bag filters, Cottrells, cyclones, washing chambers, and spray towers.
Industry:Mining
Removal of a horizontal layer from a massive orebody. In top slicing extraction retreats along the top of the orebody, leaving a horizontal floor that becomes the top of the next slice. A timber mat separates this from the overburden, which caves downward as the slices are made. Other methods attack from the bottom (sublevel caving) or side.
Industry:Mining
Removal of excess calcium and magnesium, from water through precipitation of their carbonates (ion exchange) to remove ionized calcium, magnesium, etc.
Industry:Mining
Removal of oil and grease films from metal surfaces before electroplating, galvanizing, or enameling.
Industry:Mining
Removal of ore from a series of stopes or rooms, leaving pillars between. Eventually the pillars are forced or allowed to cave under the weight of the roof.
Industry:Mining
Removal of oxygen (or decrease of its active valency in the case of a positive element) by electrical means.
Industry:Mining
Removal of part or all of residual phosphorus from steel in basic smelting.
Industry:Mining
Removal of sulfur from pyritic ore by burning in heaps, perhaps with aid of fuel.
Industry:Mining
Removal of suspended and/or colloidal material from a liquid by passing the suspension through a relatively fine porous medium, e.g., a canvas or other fabric diaphragm; the process is activated by suction or pressure, and commonly includes filter aids. The products are clear liquid and a filter cake.
Industry:Mining
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