Operational costs for cold blast cupola with and without oxygas burners

Operational costs decrease from EUR 105/tonne to EUR 94/tonne molten metal. The economic gain can mainly be attributed to the reduced proportion of pig iron. This also stresses the fact that the balance will differ for each specific foundry. 

To increase flexibility of the foundry and/or to increase the production capacity of existing installations without changing the installation layout. 

Improved control methods can lead to shorter melting or treatment times. Some examples are closer control of the composition (e.g. C, S, P content) and the weight of the charged materials and slag forming materials 

Secondary metallurgy, using AOD/VODC treatment, shortens EAF time and has a positive impact on energy conservation. The technique is discussed further in Section 4.5.7.1. 

Increased furnace efficiency through shorter melting times and reduced downtime. 

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Table 4.11 Operational costs for cold blast cupola with and without oxygas burners [184, Godinot and Ressent, 2002]...

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