Patent ID: 11945027
Assignee: SHINAGAWA REFRACTORIES CO., LTD.
Field: Materials, metallurgy (Chemistry)
Classification: CPC B  C | IPC B  C

Claim 0:
1. A mold powder, wherein
a content of F is 0 to 0.5% by mass,
CaO and SiO2 are included as main components, and a mass ratio of CaO to SiO2 (CaO/SiO2) is 0.6 to 1.4,
a content of B2O3 is 0.3 to 2.8% by mass, a content of Na2O is 5.0 to 20.0% by mass, a total content of Li2O and K2O is 0 to 4.0% by mass, a content of MgO is 0 to 3.5% by mass, a content of Al2O3 is 1.0 to 8.0% by mass, and a content of MnO is 0 to 1.0% by mass.