Low cement refractory castable

This series of refractory castable, a special type of castable developed for steel rolling heating furnace, is characterized by convenient construction, high strength, high volume stability and other advantages. Presently the product has been successfully applied to over 500 furnaces of more than 100 units such as Chengde Iron & Steel, Kunming Iron & Steel Holding Co., Ltd., Rizhao Steel Holding Group Co., Ltd., Hanzhong Iron & Steel, Jiugang, and Jianlong Group.
Main Physicochemical Index for Low cement Refractory Castable
Item DSJ50 DSJ55 DSJ60
AI2O3(%); 42 55 60
Volume density(g/c?);= 110?×16h 2.2 2.25 2.3
Compression strength(MPa);= 110?×16h 25 30 30
1300?×3h 40 - -
1350?×3h - 45 45
Rupture strength(MPa);= 110?×16h 4 5 5
1300?×3h 5 - -
1350?×3h - 6 6
Linear change rate(%) 1300?×3h -0.5~0.5 -0.5~0.5 -
1350?×3h - - -0.5~+0.5
Long-term use temperature(?) 1350 1350 1350
Used part Low-temp. furnace top and furnace wall All parts of furnace
Low cement refractory castable