Mullite brick with mullite as phase of high aluminum refractory material. Has
higher refractoriness, can reach
more than 1790 ?. So what quality characteristics does Mullite brick have?
1. The brick binder of mullite brick. Mullite brick uses adhesive to connect
between contact, therefore, the
solid degree of adhesive bonding to give full play to the excellent properties
of mullite brick base material, to
the final use performance of the products is a very important factor.
2. Bulk density of mullite brick. The density of thermal insulation material
generally should be lower than 600
kg/m. Small bulk density of material, generally tears eyes coefficient of
thermal conductivity is small, but at
the same time decreases in the mechanical strength, so need to reasonably choice.
3. The mechanical strength of mullite brick. To make the insulation material
non-deformation and damage under
their own weight and external force, so its compressive strength should not be
less than 3 kg/cm.
4. The water absorption of mullite brick. After insulation material absorbing
water, not only can greatly reduce
the thermal insulation performance, but also can accelerate the corrosion of
metal, it is very harmful.
Therefore, need to choose small bibulous rate of thermal insulation material.
5. The heat resistance and use temperature of mullite brick. According to
different situation of use place's
temperature to choose different heat insulation performance of thermal
insulation material. The highest use
temperature is the basis of the thermal insulaion material's heat resistance.
- posted 4 years ago