1,Description of Silicon nitride bonded silicon carbide brick
Silicon nitride bonded silicon carbide brick for electrolytic aluminum 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.
The oxidation resistance of our silicon nitride bonded silicon carbide brick is better than that of foreign products. The oxidation rate of foreign products is 0.78-1.62, and that of our products is 0.1-0.5. The product is buried in cryolite medium. After constant temperature of 1050 ℃ for 20 hours, the volume expansion rate is very low. It is kept warm until 100h, and there is no change again. This shows that the product has strong cryolite corrosion resistance and is widely used as the side wall material of electrolytic aluminum cell.
Compared with traditional carbon block products, silicon nitride bonded silicon carbide brick for electrolytic aluminum:
1) It has strong corrosion resistance to cryolite, fluoride, etc., and good oxidation resistance, which improves the service life
2) High mechanical strength, reduced lining thickness and increased working volume
3) Reduce power consumption and save energy
2.Main properties of silicon nitride bonded silicon carbide brick for electrolytic aluminum
3. Main characteristics of the product
1) It has strong corrosion resistance to cryolite and fluoride and good oxidation resistance
2) High thermal conductivity and good energy saving effect
3) Good thermal shock stability, low thermal expansion coefficient and good volume stability
4) High temperature mechanical and thermal properties, high mechanical strength
5) Compared with traditional carbon block products, the service life is improved
4. Main uses of the product
It is mainly applied to the side wall of electrolytic aluminum cell, the lining of aluminum ladle, the lining of copper and zinc smelting furnace and iron smelting blast furnace.
5,Our company promises to customers: to provide free technical exchanges and services with customers, and to provide samples to customers free of charge without any sample fees.
6,Achievements generated: Our company has previously shipped 70 tons to Brazil.
Do you want to find a professional supplier of Silicon nitride bonded silicon carbide brick?
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Then please contact with us
Contact me:
Email:wp@cnjingganrefractory.com/sdwenping@163.com
TEL: 86-0533-4188518 / FAX: 86-0533-4188518
Rose:+86-13275332819(wechat/whatsapp number)
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