Gas supply in steelmaking process

In steelmaking, blast furnaces convert iron ore into crude iron by the reducing action of carbon at high temperatures. This crude iron or ‘pig iron’ still contains a lot of carbon and other impurities that need to be removed, partially or totally, by a reaction with oxygen.

In the basic process pure oxygen is blown from above into the pig iron bath at a certain location using a water-cooled lance. It is important to keep the pig iron melt agitated, for a homogeneous reaction between the blown-in oxygen and carbon from the melt.

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