Resistance to molten metals and slags Flashcards
1
Q
What are the characteristics of graphite?
A
~ it is non-wetting to most molten metals and slags
2
Q
What does graphite do?
A
~ reduces iron oxide to iron metal, so Fe2O3/Fe3O4 DOESN’T FORM low-melting eutectic liquids with MgO
3
Q
What does CO and or Mg vapor do?
A
~ formed from oxidation of carbon or reduction of MgO
~ provides an OVERPRESSURE, resists slag/metal ingress