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 ?
M2 EQUITYBITES-August 18, 2015-OROE announces patent application submission for invention for dry mining tailings
The multi-billion dollar combined global markets for the MR3 System include the processing and treatment of electric arc furnace dust, nuclear wastes, semiconductor manufacturing and electroplating effluents, mercury and metal hydroxide sludges, precious metals mining tailings, and other industrial waste streams containing high concentrations of valuable metals.
The multi-billion dollar combined global markets for the MR3 System process include the processing and treatment of electric arc furnace dust, semiconductor manufacturing effluent, mercury and hydroxide sludges, precious metals mining tailings, various industrial waste water streams, and many other valuable applications.
The multi-billion dollar combined global markets for the MR3 process include the processing and treatment of electric arc furnace dust, semiconductor manufacturing effluent, mercury and hydroxide sludges, precious metals mining tailings and various industrial waste water streams.
Target global markets for the MR3 process have combined industry-wide annual sales in excess of $100 billion, and include the processing and treatment of electric arc furnace dust, semiconductor manufacturing effluent, mercury and hydroxide sludges, precious metals mining tailings and incinerator fly ash.

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