Overview of acidic slag erosion phenomena

Acidic slag attack is a common and challenging phenomenon in high-temperature metallurgy. Acidic slag is mainly composed of oxides such as silicon and aluminum. It has a profound impact on the corrosion of refractory materials and may lead to shortened equipment life and reduced production efficiency. This phenomenon is particularly significant in metallurgical production and requires great attention.

Chemical composition of acidic slag

Research shows that acidic slag typically contains higher proportions of silicon (SiO ₂ ) and aluminum (Al ₂ O ₃ ) oxides. These chemical components have a strong corrosive effect on refractory materials at high temperatures. For example, _SiO content as high as 60% can significantly accelerate the deterioration of refractory materials.

Erosion Mechanisms and Their Effects

Acidic slag corrodes refractory materials mainly through two ways: chemical reaction and physical erosion. Chemical reaction mainly refers to the reaction between acidic slag and chemical components in refractory materials to generate low-melting substances, thus weakening the structural strength of refractory materials. Physical erosion is when acidic slag penetrates into the micropores of refractory materials at high temperatures, gradually destroying its structure from the inside. Both erosion paths can lead to shortened refractory life and reduced reliability of production equipment.

data analysis

Enterprise statistics show that due to acidic slag erosion, equipment maintenance costs increase by about 20% every year and production efficiency decreases by about 15%. These data highlight the urgency of finding effective protective measures.

Solution: Protective Measures

In response to the corrosion phenomenon of acidic slag, the industry has proposed a variety of protective measures, including but not limited to:

• Improve the composition of refractory materials and increase the content of corrosion-resistant elements.
• Apply protective coatings to interior surfaces of high-temperature equipment.
• Optimize the production process to reduce the amount of acidic slag generated in the high-temperature stage.

Through these measures, the durability of refractory materials can be significantly improved, the reliability of production equipment can be improved, and ultimately production efficiency can be improved and costs reduced.

in conclusion

The impact of acidic slag erosion on the metallurgical industry cannot be ignored. Through in-depth analysis of chemical composition and corrosion mechanisms, and the development of effective protective measures, the performance of refractory materials and the operating efficiency of production equipment can be greatly improved. This provides scientific and effective solutions for the metallurgical industry and helps the industry achieve sustainable development.