- 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 furnace in which finely ground ores and concentrates are roasted to eliminate sulfur or other elements or compounds; heat is provided by the burning sulfur. The essential feature is free access of air to the charge, by having a shallow bed that is continually rabbled. Many types have been devised; multiple hearth is the most widely used.
Industry:Mining
A furnace in which hot gases, usually waste combustion gases, pass through a set of chambers containing firebrick structures, to which the sensible heat is given up. The direction of hot-gas flow is diverted periodically to another set of chambers and cold incoming combustion gas or air is preheated in the hot chambers.
Industry:Mining
A furnace in which material is heated either directly by an electric arc between an electrode and the work, or indirectly by an arc between two electrodes adjacent to the material.
Industry:Mining
A furnace in which ores are reduced from oxides, or metal is separated from other substances by a nonoxidizing heat or flame; usually a shaft furnace.
Industry:Mining
A furnace in which ores are reduced from oxides, or metal is separated from other substances by a nonoxidizing heat or flame; usually a shaft furnace.
Industry:Mining
A furnace in which sulfide ores are calcined to form gaseous SO<sub>2</sub>and leave the metal oxide, or in the case of noble metals, the metal itself.
Industry:Mining
A furnace in which the escaping combustion gases, passing through tubular flues, heat the incoming air continuously through the flue walls.
Industry:Mining
A furnace in which the slags of litharge left in refining silver are reduced to lead by being heated with charcoal.
Industry:Mining
