Circulating fluidized bed boiler refractory wear-resistant insulation material furnace door expansion joint physical and chemical indicators

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2018-10-15

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Furnace door

Self-flowing corundum castable YG-GJ-14

Alumina aggregate40
Alumina powder5
Corundum40
Additive15

Refractories>1790℃；Bulk density>2.8 g/cm³;

Normal temperature compressive strength>90 Mpa；

Flexural strength>9 Mpa；

Reburning line rate0.2%；

Thermal shock stability>40次；

Max working temperature1350℃
Were resistance<8cc

4 years above

It can be plastic with corundum. This part needs to have three physical properties: fire resistance, wear resistance and thermal shock stability. Because of the inconvenient construction of the parts, it is made of wear-resistant plastic. This material is composed of three reasons; (1) the alumina aggregate plays a role in fire resistance; (2) Al2O3 powder, which plays a role of thermal shock stabilization; (3) Corundum material, which plays a role in wear resistance.

Expansion joint

Alumina silicate cotton

Alumina aggregate40
Alumina powder5
Corundum40
Additive15

Refractries>1790℃；Bulk density>2.8 g/cm³;

Normal temperature compressive strength>90 Mpa；

Flexural strength>9 Mpa；

Reburning line rate0.2%；

Thermal shock stability>40次；

Max working temperature1350℃
Were resistance<8cc

4 year above

Used in corundum plastic. With the furnace outlet, wear-resistant plastic material.