Aluminum Silicate Ramming Mass

Aluminum silicate ramming mass is made of pure raw materials with low iron and low impurity content through reasonable grading and high-efficiency admixture. It has high fire resistance, good abrasion resistance, strong thermal shock resistance, strong corrosion resistance, and other excellent characteristics. It can be divided into different materials according to the raw materials used.

Technical Parameter of aluminum silicate ramming material

Item	Silicon carbide			Zirconium Chrome Corundum
Item	NMK4	NMK5	NMK6	NMK7
Al2O3 %	/	/	/	≥80
Sic %	≥40	≥60	≥70	/
Cr2O3 %	/	/	/	≥3
ZrO2 %	/	/	/	≥2
Bulk Density g/cm3 110℃×24h	≥2.4	≥2.5	≥2.6	≥2.8
Permanent Linear Change % 1000℃×3h	-0.4~0	-0.5~0	-0.6~0	-0.6~0
Cold Crush Strength MPa 1000℃×3h	≥60	≥70	≥80	≥90
Wear resistance at room temperature cm3 1000℃×3h	≤7	≤6	≤5	≤5
Thermal shock stability cycle 1000℃ water cooling	≥30	≥35	≥40	≥30
Plasticity Index %	15~55
Plasticity W/(m · k) 1000℃	3~5	5~7	6~8	2~3
Maximum service temperature ℃	1400	1500	1600	1600