What refractory materials are used in iron casting furnaces

Cast iron furnaces are often lined with refractory bricks or other refractory materials to resist high temperatures and chemical attack. Here are some common refractory materials used in cast iron furnaces:

1. Refractory brick: Refractory brick is a ceramic material sintered at high temperature and has good high temperature resistance and chemical corrosion resistance. They are widely used on the inner walls and bottom of cast iron furnaces.

2. Refractory castable: Refractory castable is a refractory material used for repairing and covering the interior of cast iron furnaces. It is usually mixed with refractory powder and binder. They can remain stable under the impact of molten iron and high temperatures, and are used for maintenance and supplementation of furnace bottoms, furnace walls, etc.

3. Refractory fiber: Refractory fiber is usually used as a material for the insulation layer or thermal insulation layer of cast iron furnaces. It is made of high-temperature refractory fiber. It has the characteristics of light weight and good thermal insulation performance, and can reduce heat loss in the furnace.

4. Refractory slurry: Refractory slurry is a refractory material used to repair, seal and coat the internal surface of cast iron furnaces. It is usually mixed with refractory powder and binder. It can fill cracks, smooth the surface and improve the internal refractory performance. .

These refractory materials are usually selected and used according to the specific design requirements and working environment of the cast iron furnace to ensure that the furnace can withstand high temperatures and chemical attack and maintain long-term stable working conditions.