- Industry: 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 suspension-type dryer that employs the principle of flash drying of fine coal. The coal is transported vertically through a drying column in a stream of hot gases. The source of heat for this system is usually an automatic stoker. In this system, the hot gases are drawn into the drying column by the action of the fan connected to the cyclone collector 2562 vent. The coal to be dried is continuously introduced to the hot gas stream. Virtually instantaneous drying occurs. The dried coal and the moisture-laden gases are drawn into the cyclone collector. The dry coal drops to the bottom of the collector and the moistureladen gases are discharged by the fan to the atmosphere.
Industry:Mining
A Swedish standard scale for the estimation of slag inclusions in iron and steel. This scale consists of a series of micrographs, designed to show different typical fields of view, and arranged in groups according to the form and distribution of the inclusions and numbered according to their quantity.
Industry:Mining
A swell coupling, attached to the upper exposed end of a drill rod or casing string, to act as an anvil against which the impact blows of a drive hammer are delivered and transmitted to the rod or casing string; also, sometimes used as a syn. for drive hammer.
Industry:Mining
A swell coupling, attached to the upper exposed end of a drill rod or casing string, to act as an anvil against which the impact blows of a drive hammer are delivered and transmitted to the rod or casing string; also, sometimes used as a syn. for drive hammer.
Industry:Mining
A swell coupling, attached to the upper exposed end of a drill rod or casing string, to act as an anvil against which the impact blows of a drive hammer are delivered and transmitted to the rod or casing string; also, sometimes used as a syn. for drive hammer.
Industry:Mining
A swell coupling, attached to the upper exposed end of a drill rod or casing string, to act as an anvil against which the impact blows of a drive hammer are delivered and transmitted to the rod or casing string; also, sometimes used as a syn. for drive hammer.
Industry:Mining
A swelling type of bentonite that absorbs about eight times its dry volume of water to form a gel.
Industry:Mining
A swing and hammer crusher, the hammers being pieces hung from trunnions between two disks keyed to a shaft. When revolved, centrifugal force throws the hammers out against the feed and a heavy anvil inside the crusher housing.
Industry:Mining
A swing-jib or other type of crane mounted on top of a tower, the base of which may sometimes move on rails. These cranes are esp. effective on congested sites.
Industry:Mining
A switch placed in contact with the belt conveyor immediately preceding the conveyor it is desired to control. In the centrifugal sequence control switch, a driving pulley bears against the driving belt; as the latter moves, the pulley rotates and the governor weights attached to the pulley shaft are flung out and so complete an electrical pilot circuit and thus start the subsidiary belt.
Industry:Mining
