- 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 ...
A pig iron and ore process that depends upon the rapid oxidation of the impurities contained in pig iron by a liquid, highly ferruginous slag and that is carried out in the basic open-hearth furnace, generally of the tilting type. The essential feature of the process is to retain a certain amount of metal in the furnace (1) to dilute the impurities contained in the additions of pig iron, and (2) to supply the heat necessary to keep the slag very fluid.
Industry:Mining
A pigment for use in ceramic glazes. The composition is (parts by weight): ArO<sub>2</sub>, 60% to 70%; SiO<sub>2</sub>, 26% to 36%; V<sub>2</sub>O<sub>5</sub>, 3% to 5%. Alkali must also be present; e.g., 0.5% to 5% Na<sub>2</sub>O. In the absence of alkali, a green color is produced.
Industry:Mining
A pigment for use in ceramic glazes. The composition is (parts by weight): ArO<sub>2</sub>, 60% to 70%; SiO<sub>2</sub>, 26% to 36%; V<sub>2</sub>O<sub>5</sub>, 3% to 5%. Alkali must also be present; e.g., 0.5% to 5% Na<sub>2</sub>O. In the absence of alkali, a green color is produced.
Industry:Mining
A pile of waste made of material brought direct from the mine, not waste from washery.
Industry:Mining
A pile with a generally flat cross section, which may be meshed or interlocked with adjacent similar members to form a diaphragm, wall, or bulkhead, and designed to resist lateral earth pressure or to reduce ground-water seepage.
Industry:Mining
A pile with a generally flat cross section, which may be meshed or interlocked with adjacent similar members to form a diaphragm, wall, or bulkhead, and designed to resist lateral earth pressure or to reduce ground-water seepage.
Industry:Mining
A pillar consisting of tightly rammed material enclosed in walls of stone, built on each side of the gate road.
Industry:Mining
A pillar left to protect the gangway and airway, and extending parallel to these passages.
Industry:Mining
