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, 優れた耐熱衝撃性, 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).
• 高い熱伝導率: SiC’s high thermal conductivity (~120 W/m·K) helps to dissipate heat evenly and improve the thermal efficiency of equipment.
• 強い耐摩耗性: suitable for high wear areas, such as metallurgical furnace tapping, kiln lining, 等.
• Convenient construction: ramming molding, suitable for repairing and masonry of complex shapes.

Silicon carbide ramming material introduction

プロジェクト		索引
		SC30	SC50
SiC%		30以上	≥50
Bulk density g/cm3		≥2.5	≥2.6
見かけの多孔性 %		≤18	≤18
Normal temperature compressive strength MPa	110℃×24時間	≥60	80以上
	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

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

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