Coal pitch plays a vital role in blast furnace clay, and as a carbon-containing binder, its use significantly improves the performance and efficiency of clay. In blast furnace mud, coal pitch mainly plays the following roles:
1. Strengthen the bonding effect: As a binder, coal pitch can enhance the binding force of various components in the blast mud, improve the overall strength and stability, and ensure that the mud maintains structural integrity in a complex high-temperature environment.
Improve physical properties: The addition of coal pitch can improve the physical properties of blast mud, such as improving flexural strength and compressive strength, so that the blast mud shows better mechanical properties during construction and use.
Improve high temperature resistance: High temperature coal asphalt has good thermal stability and thermal shock resistance in high temperature environment, which can prevent the performance degradation of gun mud due to temperature changes.
Plasticization and fluidity: The plasticizing effect of coal pitch makes the gun mud maintain a certain fluidity at high temperature, which is convenient for construction and operation, and also helps to fill the pores inside the material and improve the compactness.
5. Prevent oxidation and corrosion: The antioxidant components contained in coal pitch, such as polycyclic aromatic hydrocarbons and quinoline compounds, can effectively slow down the oxidation reaction of gun mud at high temperatures, prolong its service life, and enhance its corrosion resistance.
6. Adjust the process performance: the coal asphalt at different softening points has an impact on the processing performance of the gun mud, and the production process and construction performance of the gun mud can be optimized by selecting the appropriate coal asphalt type and addition amount.
In summary, the application of coal pitch in blast furnace mud not only improves the construction performance and use performance of blast furnace mud, but also plays a key role in its durability and stability in the blast furnace, which is of great significance to ensure the continuity and safety of blast furnace operation.