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Main components of refractory materials such as breathable bricks, water-resistant bricks, and castables
Source： Ke Chuang Xin Cai
Release time：2022-04-06 15:08
Refractory materials are widely used in various industrial sectors, including metallurgy, chemical processing, petrochemicals, machinery manufacturing, and power generation, with significant consumption in the metallurgical industry. In steelmaking, commonly used refractory materials include permeable bricks, water-cooled bricks, electric furnace lids, castables, runner brick, and magnesia-carbon bricks for steel ladles and refining furnaces. These refractory materials vary significantly in their main and additive components. From a chemical perspective, refractory materials are composed of minerals such as corundum, mullite, and magnesia, with major components including alumina and magnesia.
Refractory materials are widely used in metallurgy, chemical processes, petrochemicals, machinery manufacturing, power processing, and other industrial fields, with large consumption in the metallurgical industry. In the steelmaking industry, commonly used refractory materials for steelmaking converters and refining furnaces include permeable bricks, water-cooled bricks, electric furnace covers, castables, flow control sand, and magnesia-carbon bricks. These refractory materials are different, and their main components and additives vary greatly. From a chemical perspective, refractory materials are composed of minerals such as corundum, mullite, and magnesia, with major components including alumina and magnesia.
(Image) Corundum
The main components of refractory materials are the base components that constitute the refractory properties. They are the basis of the characteristics of refractory materials and directly determine the properties of the finished refractory products. For example, permeable bricks require high-quality ore and a strict and reasonable process to ensure that the service life of the permeable bricks used by steelmakers meets the requirements. The main components of refractory materials can be oxides (alumina and magnesia, etc.), or elements or non-oxide compounds (carbon, silicon carbide, etc.).
According to the properties of the main components, refractory materials can be classified into acidic, neutral, and alkaline types. Acidic refractory materials are mainly materials containing acidic oxides such as silica. Their main components are silicic acid or alumina silicate, which will form salts under high temperatures and alkaline conditions. The main chemical components of alkaline refractory materials are magnesia and calcium oxide. Common refractory products include flow control sand and steel ladle sliders. Neutral refractory materials are strictly speaking carbonaceous and chromic refractory materials. In addition, high-alumina refractory materials (alumina content greater than 45%) tend to be acidic neutral refractory materials, while chromic refractory materials are alkaline and tend to be neutral. Common high-alumina refractory materials include permeable bricks, water-cooled bricks, and electric furnace covers.
(Image) Furnace Cover
Kechuang New Materials has been researching, developing, producing, and selling permeable bricks, water-cooled bricks, and castables for 22 years. With patented formulas, unique designs, and strict adherence to each process, we ensure peace of mind for steelmakers.
Source: Luoyang Kechuang New Materials Co., Ltd.: https://www.kcnh.com/
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