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06-Aug-2020 14:22

However, the most important application is construction.

During the early 20th century, iron ore slag was also ground to a powder and used to make agate glass, also known as slag glass.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.