Silicon Carbide Bonded Silicon Nitride Brick

Silicon nitride bonded silicon carbide brick is a green body formed by mixing fine powder Si and SiC with silicon nitride as the binder and fired at about 1450 ℃ in a nitriding kiln. The product has high density, high strength, good thermal conductivity, high resistivity, and strong corrosion resistance to cryolite and fluoride.these bricks are made by combining silicon carbide and silicon nitride through a unique production process that results in superior mechanical and thermal properties.

1. Chemical Composition: Si3N4 ≥ 75%, SiC ≥ 10%, free Si ≤ 5%

2. Bulk Density: ≥2.75 g/cm3

3. Apparent Porosity: ≤15%

4. Cold Crushing Strength CCS: ≥100 MPa

1. High temperature resistance: The maximum operating temperature of silicon carbide bonded silicon nitride bricks can reach 1800℃, which makes it suitable for various high-temperature applications.

2. Excellent mechanical strength: The material has excellent mechanical strength, which can withstand a certain amount of external load without deformation.

3. Good thermal shock resistance: The product is resistant to rapid changes in temperature, which makes it suitable for use in harsh environments.

4. Corrosion and wear resistance: Silicon carbide bonded silicon nitride bricks have high corrosion and wear resistance, which makes them ideal for use in the chemical and metallurgical industries.

The production process of silicone carbide bonded silicon nitride bricks involves several steps, including mixing the two powders, forming them into the desired shape, and firing them at high temperatures. The result is a highly dense and durable material that can withstand extreme heat and thermal cycling.

1. Raw material mixing: Silicon nitride powder, silicon carbide powder, and bonding material are mixed in a specific ratio.

2. Forming: The mixed powder is formed into the desired shape using a press or a extruder.

3. Sintering: The formed brick is sintered at high temperatures to achieve the required strength and density.

4. Machining: The sintered brick is machined to achieve the desired size and shape.

Silicon carbide bonded silicon nitride bricks are widely used in various high-temperature applications, including:

1. Steel industry: Used in hot metal ladles, blast furnace stoves, and reheating furnaces, etc.

2. Petrochemical industry: Used as lining materials in high-temperature furnaces in the petrochemical industry.

3. Ceramic industry: Used as high-temperature furnace linings, kiln furniture, and burner blocks, etc.

4. Non-ferrous metal industry: Used in aluminum electrolysis cells and copper smelting furnaces, etc.

Hot Tags: silicon carbide bonded silicon nitride brick, China silicon carbide bonded silicon nitride brick manufacturers, suppliers, factory, refractory Alpha Beta Brick, Zircon Aggregate fire resistance Bricks, fire resistant clay brick, clay refractory brick straight brick, tunnel clay brick, Silica Refractory fire Brick