The impurities in a molten pool of iron Flux such as limestone may be added to foster the congregation of undesired elements into a slag Because slag is lighter than iron, it will float on top of the pool, where it can be skimmed
Waste material from the smelting process The black, lava-like material is primarily iron and silica
a hard, air-cooled aggregate that is left as residue from blast furnaces It is used as a surfacing aggregate and should be surface dry and free of sand, clay, or other foreign substances at the time of application
A silica-rich froth containing impurities produced in the smelting of gold and silver Development of slag is encouraged by the addition of especially formulated fluxes
The impurities in a molten pool of iron Flux may be added to congregate the impurities into a slag Slag is lighter than iron and will float allowing it to be skimmed
disapproval Slag is used by some people to refer to a woman who they disapprove of because they think she is sexually immoral. slagged slagging slag off to criticize someone in an unpleasant way, especially when this is unfair. By-product formed in smelting, welding, and other metallurgical and combustion processes from impurities in the metals or ores being treated. Slag consists mostly of mixed oxides of elements such as silicon, sulfur, phosphorus, and aluminum; ash; and products formed in their reactions with furnace linings and fluxing substances such as limestone. During smelting or refining, slag floats on the surface of the molten metal, protecting it from oxidation (see oxidation-reduction) by the atmosphere and keeping it clean. Slag cools into a coarse aggregate used in certain concretes; it is used as a road-building material, as ballast, and as a source of available phosphate fertilizer
Vitreous materials containing impurities from the ore and forming on the surface of molten metals
{i} residue of ore separated from a metal during the smelting process; scoria, cinder-like pieces of lava (Geology)
a hard, air-cooled aggregate that is left as a residue from blast furnaces, which may be used as a surfacing material on certain (typically bituminous) roof membrane systems
The slag of iron blast furnaces is essentially silicate of calcium, magnesium, and aluminium; that of lead and copper smelting furnaces contains iron
In metal refining, a scum or impurity that forms on the surface of a metal during thermal processing Usually slag consists of various inorganic materials that may take either glasseous, crystalline, metallic, or mixed forms
To form, or form into, a slag; to agglomerate when heated below the fusion point
A product of smelting, containing, mostly as silicates, the substances not sought to be produced as matte or metal, and having a lower specific gravity than the latter; called also, esp
In this work the term slag is used to describe any metamorphic vitrified mass derived from fuel ash under the influence of extreme heat Support for the use of the term in this context can be found in its definition in the Oxford English Dictionary and in Searle's Encyclopaedia of the Ceramic Industries
A byproduct of the steel industry In producing steel, iron ore is introduced into a blast furnace along with limestone and coke The limestone separates lquid iron from impure metals
A man-made mound or heap formed with the waste material (slag) as a by-product of coal mining. Can also refer to the waste by-product from a foundry or furnace, formed into such a mound
To slag someone off means to criticize them in an unpleasant way. All bands slag off their record companies. It's just the way it is People have been slagging me off
[ 'slag ] (noun.) 1552. From Swedish slagg, or Middle Low German slacke, whence German Schlacke; originally, perhaps, the splinters struck off from the metal by hammering.