Factors influencing the Recovery and Addition of Magnesium in Ductile Iron Ladle Treatment Processes.
Residual magnesium and magnesium recovery have always been subjects for discussion amongst foundry people. We can summarizes the most important factors that will influence the recovery of magnesium in ductile iron production.
1. Sulphur content in base iron
2. Oxygen content in base iron.
3. Slag from the melting or holding furnace.
4. Tapping temperature.
5. Time between MgFeSi addition to the ladle and tapping.
6. Slag in ladle and pocket.
7. Alloy cover.
8. Filling time.
9. Fading/Pouring time.
10. Inoculation.
11. Ladle design.
12. Chemical composition of nodulariser.
13. Alloy sizing.
14. Storage of foundry alloy.
