Description
1. Generally
speaking, the volume density for high alumina thermal insulation
brick is between 0. **1. 5 g/cm3, porosity is from *6% to *3%,
compressive strength is 1. **8. 1 MPa and thermal conductivity rate
is 0. ****0. **2 W / (Mk) (**0 ).
The high alumina
insulation brick is used in high temperature insulation layer of
furnace that has high refractoriness and good thermal shock
resistance.
High quality of
high alumina insulation bricks can be used as the linings that
directly contact the fire however it can not be used in the place
where eroded by slag directly. Because the high alumina thermal
insulation brick is of good stability under reduction condition it
is widely used as the inner insulation layer in the furnace that
protected by hydrogen or carbon monoxide atmosphere.
Its working
temperature is ***0~***0 degree and working temperature is
***0~***0 for high pure alumina bricks. In Chinese national
standards, it is classified into seven grades such asLG*1. 0, LG*0.
9, 0. 8 and etc according to the volume density.
Our thermal insulation bricks are
well exported to Korea, Japan, Pakistan, Turkey, Poland, South
Africa and etc.
