- 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 washer wherein raw coal and water is fed into the head of an inclined trough equipped with openings in the bottom for the discharge of rejects. There are three types of Rheolaveurs used in coal washing: (1) the sealed discharge type for coarse sizes, from which the reject falls against an upward current of water and is removed by an automatic gate that controls the feed to a drowned elevator; (2) a system of two, three, or four superimposed troughs for washing fine coal below about 1/2 in (1/3 cm). The troughs are equipped with several bottom discharge devices. The separation of the heavy shale from coal and middlings takes place progressively until finally the pure shale is discharged from the lowest trough, and (3) a system for washing slurry consisting usually of two troughs one above the other and equipped with a number of Rheo boxes of the open discharge type but designed to minimize the loss of coal with the fine shale.
Industry:Mining
A water accumulation in a depression in an underground roadway or in a pipe, sufficient to form a seal.
Industry:Mining
A water cartridge for stemming shotholes in coal or rock. The ampul consists of a plastic (polyvinylchloride) bag, 1-1/4 in (3.2 cm) in diameter and 18 in (45.7 cm) in length. When filled with water and the neck of the bag tied off, the filled ampul is about 15 in (38.1 cm) in length and holds slightly over 1/2 pint (0.24 L) of water. Compared with dry clay or sand, the use of water ampuls for stemming effects substantial reductions in 3546 both the airborne dust and the nitrous fumes produced by shot firing. This applies to both coal and rock blasting.
Industry:Mining
A water cartridge for stemming shotholes in coal or rock. The ampul consists of a plastic (polyvinylchloride) bag, 1-1/4 in (3.2 cm) in diameter and 18 in (45.7 cm) in length. When filled with water and the neck of the bag tied off, the filled ampul is about 15 in (38.1 cm) in length and holds slightly over 1/2 pint (0.24 L) of water. Compared with dry clay or sand, the use of water ampuls for stemming effects substantial reductions in 3546 both the airborne dust and the nitrous fumes produced by shot firing. This applies to both coal and rock blasting.
Industry:Mining
A water cartridge for stemming shotholes in coal or rock. The ampul consists of a plastic (polyvinylchloride) bag, 1-1/4 in (3.2 cm) in diameter and 18 in (45.7 cm) in length. When filled with water and the neck of the bag tied off, the filled ampul is about 15 in (38.1 cm) in length and holds slightly over 1/2 pint (0.24 L) of water. Compared with dry clay or sand, the use of water ampuls for stemming effects substantial reductions in 3546 both the airborne dust and the nitrous fumes produced by shot firing. This applies to both coal and rock blasting.
Industry:Mining
A water load pumped into drill pipe during a drill-stem test to retard fillup and prevent collapse of pipe under sudden pressure changes.
Industry:Mining
