Main components of refractory materials such as breathable bricks, nozzle block bricks, castables, etc.

Refractory materials are widely used in metallurgy, chemical technology, petroleum and petrochemical, machinery manufacturing, power processing and other industrial fields, among which the amount is large in the metallurgical industry. In the steel ladle and refining furnace in the steelmaking industry, the refractory materials commonly used by steelmaking manufacturers have air permeability Bricks, nozzle block bricks, electric furnace cover, castables, drainage sand, magnesia-carbon bricks, etc. These refractories are different, and their main components and additives are very different. From a chemical analysis, refractory materials are composed of minerals, such as Corundum, mullite, magnesia, etc., the main components of which are alumina, magnesia, etc.

For the main component of refractory material, it is the matrix component that constitutes the property of refractory, and it is the basis of the characteristics of refractory material, which directly determines the properties of refractory products. For example, breathable bricks need to use high-quality ore, and then go through strict and reasonable processes. The main components of refractory materials can be oxides (alumina and magnesium oxide, etc.), or elements or non-oxide compounds (carbon, silicon carbide, etc.) Wait).

According to the nature of the main components, refractory materials can be divided into three categories: acidic, neutral and basic. Acidic refractory materials are mainly materials containing acidic oxides such as silicon oxide. The main component is silicic acid or aluminum silicate. Salts are formed under the action of high temperature and alkali. The main chemical components of basic refractories are magnesium oxide, calcium oxide, etc. Common refractory products include drainage sand, ladle slides, etc. Neutral refractories are strictly carbon In addition, high alumina refractories (alumina content greater than 45%) are neutral refractories that tend to be acidic, while chrome refractories are alkaline and tend to be neutral refractories. Common High alumina refractory materials include breathable bricks, nozzle block bricks, electric furnace cover, etc.