The conditions required for the selection of intermediate frequency furnace lining materials

The intermediate frequency furnace lining materials are divided into three types: acid lining materials, basic lining materials, and neutral lining materials.

The acid furnace lining material is made of high-purity microcrystalline quartz sand and powder, and the composite high-temperature sintering agent and the proprietary mineralizer are mixed to form the basic furnace lining material. The fused magnesia is mainly used, and some fused corundum is added. , Magnesium intermediate frequency electric furnace refractory with pre-mixed binder. This product adopts a proprietary particle size design, and users can directly put it into use. Pure raw materials and proprietary particle size distribution design make it possible to obtain a fine and uniform unshaped furnace lining. The material has good thermal shock stability and high temperature strength, and has 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 at a satisfactory 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 crack and fall off;

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