Compared with clay brick, refractory high alumina bricks has the advantages of high refractoriness and high softening temperature under load. With the increase of Al2O3 content, the slag resistance was improved. In this regard, refractory high alumina bricks advantage outstanding, good quality and reasonable price.
The refractoriness of refractory high alumina brick is higher than that of clay brick and semi- silicon brick, which can reach 1750-1790℃. It is a high quality refractory. This series of refractory degree of the brick is mainly affected by the content, type and quantity of Al2O3. The refractoriness increases with the content of Al2O3.
Generally speaking, Al2O3 in high aluminum products is high with little miscellaneous mass. Therefore, the formation of fusible vitreous less, the load softening temperature is high. Moreover, the refractory high alumina bricks advantage remarkable, and good thermal conductivity. Because high aluminum products in the thermal conductivity of better mullite and just jade crystal number increased. Thus the thermal conductivity of the product is improved.
The thermal shock resistance of this series of firebricks is between clay products and silica products. This is mainly due to the fact that the thermal expansibility of corundum is higher than that of mullite. At present, the thermal shock stability of products can be improved by improving the particle structure, reducing the content of fine powder and improving the critical particle size and particle gradation of clinker.
Al2O3 in refractory high alumina brick is more, which is close to neutral refractory. It can resist the erosion of acid slag and alkaline slag. And because it contains SiO2, the resistance of alkaline slag is less than that of acid slag. In addition, the slag resistance of high alumina refractory brick is related to the stability of the product. Generally speaking, after high pressure molding and high temperature firing, products with low porosity have higher slag resistance.
Zhengzhou Rongsheng Kiln Refractory Co.,Ltd. is professional refractory material manufacturer. Production of refractory high alumina brick advantage prominent, authentication qualification is complete, the price is reasonable preferential, the product quality safety has the safeguard. Welcome to consult and purchase, we will serve you wholeheartedly.
