It was also ground into powder to add to glazes for use in ceramics.Some of the earliest such uses for the by-products of slag have been found in ancient Egypt.
Slag is drawn off the furnace just before the molten steel is poured into ladles for ingotting.Ferrous and non-ferrous smelting processes produce different slags.The water carries the slag in its slurry format to a large agitation tank, from where it is pumped along a piping system into a number of gravel based filter beds.The filter beds then retain the slag granules, while the water drains away and is returned to the system.Please contact us if you have found inappropriate content.
Slag is the glass-like by-product left over after a desired metal has been separated (i.e., smelted) from its raw ore.
During smelting, when the ore is exposed to high temperatures, these impurities are separated from the molten metal and can be removed.
Slag is the collection of compounds that are removed.
In many smelting processes, oxides are introduced to control the slag chemistry, assisting in the removal of impurities and protecting the furnace refractory lining from excessive wear. A good example is steelmaking slag: quicklime and magnesite are introduced for refractory protection, neutralising the alumina and silica separated from the metal, and assist in the removal of sulfur and phosphorus from the steel.
Slag run-off from one of the open hearth furnaces of a steel mill, Republic Steel, Youngstown, Ohio, November 1941.
A slag by-product of such workings was a colorful, glassy, vitreous material found on the surfaces of slag from ancient copper foundries.