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Reduce Melt Loss AND Reduce Your Carbon FootPrint!

24
Mar

Reduce Melt Loss AND Reduce Your Carbon FootPrint!

Reduce Melt Loss AND Reduce Your Carbon FootPrint!

Surface dross generation rates are affected by several factors including:

  1. Metal Temperature – Often “dominates the equation” above 730°C (1350°F).
  2. Surface Area – Can be moderated by a heavy argon cover gas.
  3. Turbulence – Induced by flow and mechanical systems, increases effective surface area.
  4. Direct Incorporation – Mechanisms that force gas and dross below the metal surface.

 Dross Generation as a Function of Melt Temperature

The diagram above illustrates how the molten metal temperature affects dross generation rates. At 790°C, the dross generation rate literally doubles as compared to 730°C. Conversely, if the furnace was operating at 800°C and the temperature was reduced to 730°C, the surface dross generation rate would be cut by 70%!

Molten Metal Temperature Uniformity Comparison

Circulations Impact on Temperature Uniformity of Molten Metal

By incorporating good circulation practices, and reducing furnace temperatures, the dross generation rate can be significantly reduced. Consequently, you can reduce metal loss while reducing your carbon footprint.