China used clay with less impurities to burn pottery more than 4,000 years ago, and it has been able to cast bronzes. During the Eastern Han Dynasty (25~220 AD), clay refractory materials were used as kiln materials and saggersfor burning porcelain. At the beginning o··· ...

Synthetic refractory raw materials are two or more natural raw materials or industrial raw materials, after fine grinding, homogenization and high temperature treatment (sintering or melting) to form the expected mineral phase. Synthetic raw materials can be artificia··· ...

High temperature volume stability refers to the performance of refractory materials that remain stable without change (shrinkage or expansion) due to the effect of heat load during use. For fired refractory products, it is usually expressed by the heating volume chang··· ...

According to the reasons for the damage of the blast furnace brick lining and the requirements of the working conditions of the blast furnace, it is proposed that the slag corrosion resistance, alkali resistance and micro-porosity index reach an excellent level as the··· ...

Refractory products with alumina content greater than 90% and corundum as the main crystal phase. Very high normal temperature compressive strength (up to 340MPa). High load softening start temperature (more than 1700°C). Very good chemical stability, strong resistan··· ...

Special high alumina bricks and ordinary high alumina bricks are different in performance, index and usage. The main reason is the difference in internal quality. Special grade bricks are made of special grade bauxite raw materials. The content of the special grade ra··· ...

Due to the process and equipment requirements of industrial kilns in metallurgy, building materials, glass, electric power, chemical industries and other industries, refractory materials must be built as linings. The performance of refractory materials directly affect··· ...

1 Preparation of mud for high alumina bricksFirst, prepare the clay mud. The clay mud is prepared in a mud mixer, the density of the mud is 1.50~1.65g/cm3, and the temperature is 50~70℃.The mud is prepared in a wet mill. The preparation procedure is as follows: accor··· ...

Highalumina bricks are aluminum silicate refractory products containing more than 48% aluminum oxide (A203). If the content of A203 is higher than 90%, it is called corundum brick, because the standards of different countries are not completely consistent due to diffe··· ...

High alumina brick is one of the commonly used refractory bricks. It belongs to the silicon-aluminum refractory material and the neutral refractory brick. It is commonly used in various large and medium-sized thermal kiln equipment or smelting kilns, according to GB/T··· ...