Aluminum-carbon sleeve brick is a kind of high-performance refractory material, which is widely used in key parts of iron and steel industry, such as converter tapping and ladle lining. The following are the specific performance advantages of aluminum-carbon sleeve bricks:

I. High fire resistance

Aluminum-carbon sleeve bricks have extremely high fire resistance and can usually withstand high temperatures above 1700℃. This makes it stable in high temperature environment without softening or melting, thus effectively protecting the equipment from high temperature corrosion.

II. Excellent corrosion resistance

The main components of aluminum-carbon sleeve brick include alumina (Al₂O₃) and carbon, which gives it excellent corrosion resistance. At high temperature, carbon can effectively resist the chemical erosion of slag, while alumina provides good mechanical strength and wear resistance. This material combination makes the aluminum-carbon sleeve brick perform well in the face of high-temperature slag and molten steel, and its service life is significantly prolonged.

III. Good thermal shock resistance

Aluminum-carbon sleeve brick has good thermal shock resistance and can keep structural integrity in the environment of rapid temperature change. This characteristic is especially important for the converter tap hole, because the tap hole needs to bear the impact of high-temperature molten steel and the cooling of cooling water frequently. The thermal shock resistance of aluminum-carbon sleeve brick can effectively reduce the cracks and damage caused by temperature change, thus prolonging the service life.

IV. High strength and wear resistance

The high strength and wear resistance of aluminum-carbon sleeve brick enable it to run stably for a long time under complex working conditions. Its internal carbon structure provides good erosion resistance, which can effectively resist the mechanical erosion of high-temperature molten steel and reduce wear. This high strength and wear resistance make the aluminum-carbon sleeve brick perform well in key parts such as converter tapping hole, and reduce the replacement frequency.

V. Good thermal conductivity

Aluminum-carbon sleeve brick has good thermal conductivity and can effectively conduct heat. This feature is helpful to quickly dissipate heat and reduce equipment damage caused by high temperature accumulation. In the application of converter tap hole, good thermal conductivity can effectively reduce the temperature of tap hole and prolong its service life.

VI. Optimized production process

Aluminum-carbon sleeve brick usually adopts advanced production technology, such as isostatic pressing. This process can ensure the uniform internal structure of brick, reduce internal defects and improve the overall performance. Compared with the traditional mechanical pressing, the aluminum-carbon sleeve brick formed by isostatic pressing has higher strength and better thermal shock resistance.

VII. Reducing pollution

Aluminum-carbon sleeve brick will not pollute molten steel during use. Its chemical composition is stable and will not react with molten steel, thus ensuring the purity and quality of molten steel. This is especially important for producing high-quality steel.

VIII. Summary

Aluminum-carbon sleeve brick has excellent performance in high temperature environment such as converter tap hole by virtue of its high refractoriness, excellent corrosion resistance, good thermal shock resistance, high strength and wear resistance, good thermal conductivity and optimized production process. These performance advantages not only prolong the service life of equipment, but also improve the production efficiency and reduce the production cost, so it is an indispensable refractory in modern iron and steel industry.