- 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 ...
In control of a measured value in a process, limited drift from optimum or norm (e.g., pH 7.6 + or - 0.2).
Industry:Mining
In conveyor systems, the delivery end when a jib is fitted to deliver the load in advance of and remote from the drive.
Industry:Mining
In copper smelting, a kind of converter with horizontal tuyeres, to produce bottoms and a purified copper in one operation.
Industry:Mining
In copper smelting, the process of reduction in a reverberatory furnace, after roasting, if necessary.
Industry:Mining
In crater tests, the average distance from the center of the explosive charge to the periphery of the crater at the surface.
Industry:Mining
In crushing practice, these rates are (1) based on crusher dimensions, wherein the largest cube that will enter is compared with the largest that can be discharged, or (receiving opening) / (discharge opening); the receiving opening is measured from the top of the movable member to the top of the stationary member; and (2) based on actual products; (a) overall reduction ratio = (mean size of feed) / (mean size of product); (b) individual reduction ratio = (size most abundant in feed) / (mean size of grading band concerned).
Industry:Mining
In crushing practice, this term may be expressed as: Size most abundant in feed/mean size of grading band concerned.
Industry:Mining
In crushing, seizure of rock slab between approaching jaws so as to present crushing stress above unsupported parts of the rock, thus inducing shear failure rather than failure under compression.
Industry:Mining
In crystal optics, the amount by which the slow wave falls behind the fast wave during passage through an anisotropic crystal plate. Retardation depends on plate thickness and the difference in refractive indices of its two principal directions.
Industry:Mining
In crystal structures, dislocations locally alter coordination polyhedra with the result that regular polyhedra several atomic diameters distant are offset from their regular positions. The Burgers vector is a measure of that offset, being normal to edge dislocations and parallel to screw dislocations.
Industry:Mining
