The conditions for the selection of intermediate frequency furnace lining materials

Furnace lining materials are divided into three types: acid lining material, basic lining material and neutral lining material. The acid lining material is made of high-purity microcrystalline quartz sand and powder, compound high-temperature sintering agent and proprietary mineralizer are added, and a common particle size ratio is selected. The basic furnace lining material is mainly composed of fused magnesia, some fused corundum is added, and the refractory material for magnesia medium frequency electric furnace is pre-mixed with a binder.

Neutral furnace lining material Low fused corundum-based aluminum-magnesium spinel dry vibration refractory material, selected high-purity raw materials and proprietary particle size distribution design, to obtain a dense and uniform unshaped furnace lining. The material has excellent thermal shock Stability and high temperature strength with a loose layer during normal use.

Intermediate frequency furnace lining materials Acidic, neutral and basic refractory materials are widely used in coreless intermediate frequency electric furnaces. steel, high manganese steel.

Therefore, the selection of intermediate frequency furnace lining materials should have the following characteristics:

1. The function of no deformation and no melting under sufficient temperature;

2. It can have good structural strength at high temperature without softening and deformation;

3. The volume is stable at high temperature, and will not expand and shrink to cause cracks;

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

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