5. Dairyman
Slag is made up of oxides from the ore gangue, additions and mineral matter (ash) from coke and coal. Reactions in the crucible between cast iron and liquid slag lead to a division of elements between cast iron and slag; the latter therefore plays a role in purifying the cast iron, particularly as regards sulfur.
5.1 Chemical characteristics of slag
Slag consists of four main oxides, CaO, SiO 2 , Al 2 O 3 , MgO, which account for between 95 and 98% of its composition. The remainder is made up of numerous constituents in small quantities, such as FeO, MnO, Na 2 O, K ...
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Dairyman
Mechanisms of cast iron and slag formation
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