... %≥75655548refractoriness,≥179017701750refractoriness under load, ≥1520150014701420,%1500,2h0. 1- 0.4---1450,2h---0.1-0.4App.Porosity,%≤2322C.C.S,MPa≥53 ... %≥75655548refractoriness,≥179017701750refractoriness under load, ≥1520150014701420,%1500,2h0. 1- 0.4---1450,2h---0.1-0.4App.Porosity,%≤2322C.C.S,MPa≥53 ...