slag (redirected from slaggiest)

slag: see metallurgy.

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slag

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.

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slag

1. the fused material formed during the smelting or refining of metals by combining the flux with gangue, impurities in the metal, etc. It usually consists of a mixture of silicates with calcium, phosphorus, sulphur, etc.

2. a mass of rough fragments of pyroclastic rock and cinders derived from a volcanic eruption; scoria

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slag [slag]

(metallurgy)

A nonmetallic product resulting from the interaction of flux and impurities in the smelting and refining of metals. Also known as bloom.

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slag

A grayish aggregate left as a residue of blast furnaces; used as surfacing on built-up roofing and in manufactured products such as slag cement and slag wool. Also see blast-furnace slag.