Hot blast stove is a higher structure, heat storage room, combustion chamber and other places in the refractory bricks in the mechanical load and high temperature, the refractory bricks shrinkage and deformation and cracks, affecting the service life of the hot blast stove.
Refractory bricks for hot air furnace with the general requirements are: creep rate is small, large heat capacity, high temperature strength is good, with good thermal shock resistance. Specific selection of refractory bricks, mainly by the hot air temperature decision.
When the wind temperature is lower than 900 ℃, the general selection of clay bricks; wind temperature of 900?1000 ℃, high-temperature parts of the furnace lining of the refractory bricks are mainly high aluminum refractory bricks, mullite refractory bricks or silica refractory bricks; wind temperature is higher than 1100 ℃, the general selection of high alumina refractory bricks, mullite refractory bricks and silica bricks for the lining of the furnace or lattice bricks. When the wind temperature is increased to 1200 ℃ or more, high alumina refractory bricks can not meet the requirements of the hot air furnace roof and partition walls and the upper part of the heat storage room need to use silicon bricks. Because of the small heat capacity of silicon bricks, therefore, in the silicon brick layer below the lattice brick application of low creep high alumina refractory bricks.
If you are interested refractory products, contact us now!
Email: info@zaferroalloy.com Whatsapp: 8615896822096
