Magnesium oxide castable refractory foundry ladle liners

摘要

Refractory foundry ladle liners made from castable magnesium oxide-based compositions are disclosed. The liner compositions include MgO-containing aggregate, Al2O3-containing aggregate, and an inorganic binder. The ladle liners are cast into shape, placed into ladle shells, and packed with sand. The foundry ladle assemblies, including the pre-cast MgO-based ladle liners, are reusable for multiple foundry operations.

主权项

1. A pre-cast refractory ladle liner for use in a foundry ladle assembly comprising:
at least 50 weight percent MgO aggregate based on the total weight of the liner; from 10 to 40 weight percent Al2O3 aggregate; from 1 to 30 weight percent inorganic binder; and from 1 to 20 weight percent of a non-oxide ceramic additive.