Magnesium oxide-based refractory ceramic dies are made from smelters for 3 to 30 of their refractory ceramic products, and their weight percentages are greater than 95 of magnesium oxide and calcium zirconium.

摘要

Refractory ceramic products, made by a smelter consisting of MgO and circona de calcium, with a volume greater than or equal to 95%; and refractory ceramic molds based on MgO.