When used within the temperature range it can withstand, high alumina bricks show extraordinary stability and durability. It can not only resist the invasion of high temperatures, avoid damage and melting, but also effectively protect the furnace shell and ensure the overall structure of the furnace body is safe.
In the application process of high aluminum bricks, the thickness of its masonry has a profound impact on the performance and life of the furnace lining. It is true that a thicker masonry layer can slow down the diffusion rate of the heat source and provide more stable protection for the furnace environment. However, too thick masonry is not a wise move, it may bring a series of unnecessary troubles. Therefore, finding a reasonable masonry thickness has become the key to ensuring the service life of the furnace lining.
Taking the rotary kiln lining as an example, when high alumina bricks are selected as masonry materials, their thickness is usually controlled between 220-250mm. This thickness selection can not only ensure the durability of the furnace lining, but also avoid the problem of reduced output caused by too small kiln diameter. Too thin a masonry layer will reduce the service life, while too thick a masonry layer may cause unfavorable phenomena such as increased kiln weight and squeezing out high-alumina bricks, thus affecting the normal operation of the rotary kiln.
In the application of calcium carbide furnace, the masonry thickness of high-alumina refractory bricks also needs to be carefully considered. As a permanent layer material for the furnace bottom, 75mm thick high-alumina bricks usually need to be masoned in six layers to ensure the stability and durability of the furnace bottom. However, too many masonry layers will also affect the output of the calcium carbide furnace to a certain extent. Similarly, if the number of masonry layers is reduced, although the output may be increased, the service life will also be shortened accordingly. In the furnace wall, a masonry thickness of 345mm has been proven to be a more reasonable choice, which can not only ensure the strength of the furnace wall, but also avoid adverse effects on output.
In the working layer of the hot blast furnace and the blast furnace wall, the masonry thickness of high alumina bricks also needs to be carefully designed. After removing the insulation layer, the thickness of the wall lining is usually controlled at about 345mm. This thickness selection can not only resist the invasion of high temperature and erosion, but also ensure the stability and durability of the furnace body.
In waste incinerators, the masonry thickness of high aluminum bricks is usually controlled at around 230mm. If the thickness is too thin, such as only 65mm, its service life may be rapidly shortened due to wear or erosion problems, thus affecting the normal use of the incinerator. Therefore, a reasonable masonry thickness is essential to ensure the stability and durability of the incinerator.
Of course, in some furnace linings with low temperatures, such as those below 1200℃, the masonry thickness of high alumina fire bricks can also be appropriately reduced. For example, a thickness of 114mm or 65mm is also feasible in some cases. However, it should be noted that the specific masonry thickness also needs to be comprehensively considered and determined based on factors such as the temperature and corrosiveness of the furnace lining.
In summary, the masonry thickness of high alumina bricks needs to be carefully designed and selected according to specific application scenarios and actual needs. Only by finding the reasonable masonry thickness can the stability and durability of the furnace lining be ensured, thereby extending the service life of the furnace body.
