Lightweight silica bricks are also called silica insulation bricks. Lightweight refractory material with silicon dioxide above 91% and bulk density below 1.2g/cm3. The refractoriness and softening temperature under load are not much different from ordinary silica bric··· ...

Refractory ball for blast furnace ball hot blast stoves are made of bauxite as the main raw material, after batching, pressing, drying and high temperature firing. Refractory balls are used in small blast furnaces, and have superior thermal characteristics such as lar··· ...

Zirconium ramming material is mainly composed of zirconium aggregates, powders, binders, and additives. It is an amorphous refractory with low plasticity and is used in glass kilns.There are two commonly used zirconium ramming materials for glass kilns, namely zircon ··· ...

Corundum and mullite bricks are made of corundum and mullite as the main raw materials, and are fired at high temperature in an oxidizing atmosphere by adding an appropriate amount of alumina, silica ultrafine powder and additives. The content of AL2O3 is 72%~90%.Prod··· ...

There are many types of refractory raw materials and various classification methods. According to the way the raw materials are produced, they can be divided into two categories: natural raw materials and synthetic raw materials. Natural mineral raw materials are stil··· ...

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··· ...