A byproduct of smelting ore, such as iron, lead or copper. Also, overburden or dropping from welding that may burn, melt or discolor adjacent surfaces.

"refuse from smelting," 1550s, from Middle Low German slagge (German Schlacke) "splinter flying off when metal is struck," related to Old High German slahan "to strike, slay&q [..]

"denigrate," by 1971, from slag (n.) in a secondary sense of "worthless person" (1788). Related: Slagged; slagging.

Material formed as a by-product of mining operations, usually from the smelting of metallic ores.

The waste product of the process of smelting.

mixture of glassy, silica-based material (frit) and biochar that is a byproduct of biomass gasification.

slut

An impurity in an iron

1. A waste product in ironmaking and steelmaking. Limestone, acting as a flux, combines with impurities to form slag. Usually slags consist of combinations of acid oxides with basic oxides and neutral [..]

Concrete cement that sometimes covers the vertical face of the foundation void material.

A by-product of smelting ore such as iron, lead or copper. Also overburden/dropping from welding which may burn, melt, or discolor adjacent surfaces.

a) The non-metallic material forming a molten layer on top of the molten steel in a steel furnace. It is made by charging suitable materials and plays an important role in the refiningh of the steel. [..]

Flux

The ground material leftover from the production of metals. It is used as an additive in concrete to increase properties such as durability and to reduce its permeability.

(n) the scum formed by oxidation at the surface of molten metals(v) convert into slag

A residue produced by the combustion of coal. This heat-fused material accumulates on the sides and bottom of a boiler and is removed periodically and disposed of according to environmental regulations.

Concrete cement that sometimes covers the vertical face of the foundation void material.

A product resulting from the action of a flux on the nonmetallic constituents of a processed ore, or on the oxidized metallic constituents that are undesirable. Usually slags consist of combinations o [..]

A non-metallic byproduct of the welding process forming a hard crust over the molten steel which should be chipped away for inspection of a weld.

  As a verb; - to run a destructive program which will render most or all of a computer systems files, records, and data, utterly useless. As a noun; - a description of what is left of a computer system after the slag code has been run. Normally associated with IT staff, and Logic Bombs, Slag Code has, allegedly, been used by a Hacker to destroy a [..]

a good-natured insult. In the Midlands, if people don't slag you unmercifully, it's a sign they probably don't like you.

To say something unpleasant about another person behind their back.

The vitreous mass separated from the fused metals in the smelting process. Staking

Glassy substance formed as a by-product from the smelting of metallic ores.

Slag is a by-product in iron making and steel making. Slag consists of oxides from fluxing agents, raw material impurities and undesired elements which are oxidized during the process.

Melted or solid substance with a varying composition covering the liquid product in the course of metallurgical processes (obtained from melting of ore mixture, processing of melted intermediate produ [..]

A substance that has been formed by chemical action and fusion at furnace operating temperatures.

The non-metalic residue from the smelting of metalic ores that generally forms as a molten mass floating on the molten metal.

The fused refuse or dross separated from a metal in the process of smelting.

Waste material from a coal mine. * '''2011''', Vivienne Dockerty, ''A Woman Undefeated'', [http://books.google.com.au/books?id=WRaPN5SsOfIC&pg=PA54&lpg=PA54&dq=%22slag%22|%22slags%22+woman+-intitle [..]