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The slag formation is a complex process consisting of several stages. There is the formation of liquid slag from individual batch materials. In the production of steel, the slag mode is chosen according to the type of apparatus, the type of processed pig iron and steel scrap, and the requirements for the grades of the steel produced. The paper focuses exclusively on primary slags from the steelmaking process in the oxygen converter. The amount of oxygen converter is about 120-150 kg per tonne of crude steel produc...

The cupola furnace is a most widely used foundry furnace for melting of cast iron. Besides main product, cast iron, also secondary products are formed in cupola furnace. They have a character of secondary raw materials, or industrial wastes. Under the laws applicable to waste management, the waste producer is obliged to ensure their disposal without negative environmental impacts. Typical, and main secondary product of cast iron production is a cupola furnace slag. Its occurrence is approximately from 40 to 80 kg ...

Apart form main product output, the side products having the second raw materials and industry wastes status are being created in metallurgy plant technological process. Dust outlets, waste gases, technological liquids and particularly slags represent main metallurgy industry wastes. Metallurgy plant with closed production cycle and annual capacity of 5 millions tons of steel yearly produces about 1 million tons of blast furnace slag, 0.5 million tons of steelmaking slag and 0.05 million ton of secondary metallurg...