Necessary conditions for selecting furnace lining materials

What are the necessary conditions for selecting furnace lining materials based on many years of practical operating experience? Answer:

1. First of all, the lining material does not deform or melt at a sufficient temperature.

2. It can have the necessary structural strength at high temperatures without softening deformation

3. The volume must be stable at high temperatures, so that it will not expand and shrink to cause cracks

4. When the temperature changes sharply or the heating is uneven, it will not crack and peel off

5. It can resist the chemical attack of metal solution, slag and furnace gas