- Time:Jul 12, 2023
Ladle is an important equipment for smelting and casting molten steel. Commonly used refractory materials include the following:
1. Carbonaceous refractory material: Carbonaceous refractory material is mainly made of high-purity graphite, which has excellent slag resistance, heat resistance and thermal conductivity, and is often used in the lining of the bottom and side walls of ladles. Carbon bricks, carbon blocks and carbon particles are all carbonaceous materials.
2. Hard refractory materials: Hard refractory materials are mainly composed of alumina, silicon carbide and high-quality high-alumina bricks. Hard materials have good heat resistance and corrosion resistance in high temperature environments, and are often used in the upper and middle parts of the ladle.
3. Fused magnesia: Fused magnesia is a kind of refractory material made of high-purity magnesium ore through electric melting. It has high temperature stability, corrosion resistance and is suitable for high-magnesia bricks, etc., and is widely used in the bottom, middle and side walls of ladles.
4. High alumina brick: High alumina brick is a refractory material made of high-purity bauxite as the main raw material. It has good high temperature resistance and corrosion resistance, and is often used for lining, top and side walls in ladles.
5. Qualified ceramic fiber: ceramic fiber is a refractory material with excellent thermal insulation performance and high temperature resistance. It is usually applied to the insulation layer of the ladle in the form of felt, board or yarn, which can effectively prevent heat loss and improve smelting efficiency.
These refractory materials have different functions in the ladle, such as slag resistance, heat resistance, heat conduction, heat insulation and so on. The specific selection of refractory materials will be determined according to the characteristics of molten steel, casting process and service conditions, so as to ensure the normal operation and long life of the ladle. It is recommended that a professional refractory supplier or engineer be consulted when selecting a refractory for the best advice for a specific application.
