- Time:Jun 30, 2023
Alkaline refractory bricks and acid refractory bricks are two common refractory materials, and they have significant differences in chemical properties, uses and adaptation to the environment.
一. Differences in chemical properties:
1. Chemical properties of basic refractory bricks (also known as basic refractory materials): basic refractory bricks are mainly composed of alkali metal oxides such as magnesium oxide (MgO) and calcium oxide (CaO). They have high alkali resistance and high temperature resistance, and can withstand highly alkaline environments.
2. Chemical properties of acidic refractory bricks (also known as acidic refractory materials): acidic refractory bricks are mainly composed of silicate minerals (such as quartz, feldspar, etc.) and acidic oxides such as alumina (Al2O3). They have good acid and heat resistance and can withstand highly acidic environments.
二. the difference in use:
1. Application of basic refractory bricks: basic refractory bricks are mainly used for the lining of blast furnaces, converters, electric furnaces and other smelting furnaces in the metallurgical industry. There are highly alkaline substances inside these furnaces, such as silicon, manganese, calcium and other elements in steel, and alkaline refractory bricks can effectively resist the erosion of these alkaline substances.
2. Use of acid refractory bricks: Acid refractory bricks are widely used in acidic environments in chemical, petroleum, metallurgical and other industries. Such as pickling tanks, high temperature furnaces, catalytic cracking units, etc. Acidic refractory bricks can resist the corrosion of acidic solutions and the erosion under high temperature conditions.
三. the difference in adapting to the environment:
1. Alkaline refractory bricks adapt to the environment: Alkaline refractory bricks are suitable for high alkaline environments, such as alkaline substances (oxides, sulfides, etc.) in metallurgical furnace materials and alkaline components in waste slag in iron and steel smelting.
2. Acidic refractory bricks adapt to the environment: acidic refractory bricks are suitable for acidic environments, such as acidic solutions, strong acid steam and high-temperature acidic gases.
It should be noted that due to the different chemical composition and structure of alkaline and acidic refractory bricks, they have their own characteristics in refractory performance and use. In practical applications, appropriate refractory materials should be selected according to the characteristics of the working environment, and the use instructions provided by the manufacturer should be strictly followed to ensure the normal operation and life of the refractory materials.
