Tailings


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tailings

[′tāl·iŋz]
(engineering)
The lighter particles which pass over a sieve in milling, crushing, or purifying operations.
(mining engineering)
The parts, or a part, of any incoherent or fluid material separated as refuse, or separately treated as inferior in quality or value.
The decomposed outcrop of a vein or bed.
The refuse material resulting from processing ground ore.

Tailings

 

in ore dressing, the refuse material resulting from the concentration of minerals. Tailings contain a lesser amount of the valuable component than does the initial raw material. They consist mainly of gangue; the useful components are contained in such amounts or forms that they cannot be extracted as concentrates by means of conventional technology. The metal content in tailings removed from ores amounts to hundredths of a percent. Tailings resulting from the concentration of coal are characterized by an ash content that may be as high as 70 percent. For the purpose of combined processing of mineral raw materials, tailings are retreated to obtain, for example, aluminum with a high alumina content, or are used as fluxes or building materials. In the future, tailings stored in tailing ponds may be retreated to obtain metals.

tailings

1. Stones which do not pass through the largest openings of a screen used to separate sizes (as after a crushing operation).
2. The residue or leavings of any product.
References in periodicals archive ?
The tailings reprocessing project is based on proven reserves totaling 77.
Phoenix currently recovers PGM's from chrome tailings dumps and dams through Mineral Rights Agreements pertaining to the Kroondal and Elandskraal tailings dumps, and Buffelsfontein Tailings Dams and potential future current arisings at the Lesedi Mine, recently acquired by Samancor Chrome.
The Athabasca river region and the Aurora Settling Basin tailings pond are on an important route for migratory birds during breeding season.
The whole idea, essentially, is, rather than just taking the tailings and wasteland at mine sites and putting grass down, to do something useful with them," said Beckett, who's also a founding member of Sudbury's VETAC (Vegetation Enhancement Technical Advisory Committee).
The company will have a seven month option period from the date of signing the DoA to conclude drill work and metallurgical test work to evaluate the economic potential of the tailings material
Min-Kush and Kazhi-Sai tailings were prioritized over risk of pollution of Issyk-Kul Lake with uranium waste in case the tailing banks are washed out.
Itogon Mayor Victorio Palangdan said the tailings dams were almost full and nearing their breaching levels.
Our research has shown that in many cases, the impermeable cover is unnecessary and can be replaced by a shallow soil developed directly upon the sulphide-bearing tailings.
Once extracted, these concentrates will contain the majority of minerals with recoverable metallic values presently residing in the tailings, which coincidentally are the minerals responsible for the adverse environmental consequences of the original tailings' disposal.
The tailings ponds are located six miles west of the mine, which is surrounded by the Carson National Forest and is approximately two miles from the Latir Peak Wilderness Area.
Their economy is seen in the continuation of the lifetime of the drainage system, the collector, the flotation pulp station and the water system between the flotation plant and the tailing pond which are the major costs in construction and maintenance of the tailings dam.