Item

Performance Index

DN-12

DN-15

AI 2 0 3 ， %

≥45

≥42

Fe 2 O 3 ， %

≤1.2

≤1.5

Refractoriness ℃

≥ 1750

≥ 1750

Refractoriness Under Load 0.2Mpa ℃

≥ 1470

≥ 1450

Linear Change After Reheating

(1450 ℃ ×3h) %

0 — 0.2

0 — 0.3

Apparent Porosity %

≤12

≤15

Cold Crushing Strength MPa

≥68

≥58.5

Bulk Density g/cm 3

≥2.37

≥2.30