Overview of Key Environmental and Energy Facts Refining and Casting

1995.

Energy

Energy use per ton of cast steel: ingot castinga, 2.78 X 106 Btu Continuous casting, 0.29 X 106 Btu

Emissions

Effluents

Byproducts/Hazardous Wastes

Largest source: teeming into molds

Sources: vacuum degassing, Mill scale, sludge continuous casting cooling water

Typical wastewater volume per ton of steel Degassing: 25 gal Continuous casting: <25 gal

Particulate: iron and other oxides

Source: From Energetics, Inc., Energy and Environmental Profile of the U.S. Iron and Steel Industry, D0E/EE-0229,

U.S. Department of Energy, Washington, DC, 2000. a Includes soaking pits.

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