Silicon carbide ramming mass

Silicon carbide ramming mass is an amorphous refractory material made of silicon carbide (SiC) as the main raw material, combined with high-purity refractory aggregate, binder, and additives. This material has high thermal conductivity, excellent thermal shock resistance, erosion resistance, and wear resistance, and is suitable for repair and lining construction of high-temperature industrial equipment, especially for working conditions that require rapid sintering and long-term durability.

Silicon carbide ramming material characteristics

High refractoriness: temperature resistance can reach above 1600℃, suitable for extremely high temperature environments.
Excellent thermal shock resistance: low thermal expansion coefficient, can withstand drastic temperature changes without cracking.
Chemical erosion resistance: good erosion resistance to acidic and alkaline slag and molten metal (such as aluminum and copper).
High thermal conductivity: SiC’s high thermal conductivity (~120 W/m·K) helps to dissipate heat evenly and improve the thermal efficiency of equipment.
Strong wear resistance: suitable for high wear areas, such as metallurgical furnace tapping, kiln lining, itd.
Convenient construction: ramming molding, suitable for repairing and masonry of complex shapes.

Silicon carbide ramming material introduction

project		index
		SC30	SC50
SiC %		≥30	≥50
Bulk density g/cm3		≥2.5	≥2.6
Apparent porosity %		≤18	≤18
Normal temperature compressive strength MPa	110℃×24h	≥60	≥80
	1100℃×3h	≥100	≥120
Heating permanent line change % 1400℃×3h		±0.3	±0.2
Wear resistance cm3		≤6	≤4

Application of silicon carbide ramming mass

silicon carbide ramming mass application

Metallurgical industry: Repair of linings of electric furnaces, blast furnace tapping channels, ladles, and tundishes.

Nonferrous metal smelting: Linings of aluminum electrolytic cells and copper smelting furnaces.

Chemical industry: Anti-corrosion layer of gasifiers and incinerators.

Ceramic/glass industry: Wear-resistant layer of furnace bottoms and combustion chambers.

Others: High-temperature pipes, hot blast furnaces, and other areas that require rapid repair.

Construction method

Matrix treatment: clean the construction surface, remove impurities, and loose layers.
Mixing and stirring: Add binder (such as water or resin) in proportion and stir evenly until there is no dry powder.
Ramming and molding: ramming in layers (each layer ≤ 50mm) to ensure that it is dense and has no pores.
Curing and baking: after natural curing for 24 hours, bake according to the heating curve (avoid rapid heating).