What is the blast furnace iron hook material?
Trench material is a refractory material used for the lining and repair of blast furnace tap trenches. It is an amorphous refractory material, which is made of fused corundum, silicon carbide, fixed carbon and other refractory raw materials, adding binders and additives, and is mixed by mixing. According to the need, the construction method can choose to use refractory castable or refractory ramming material.
In the trench material, the materials used in the lining include refractory castable and refractory ramming material, while the material used to repair the iron trench is generally refractory ramming material. This material is mainly used in the molten iron trench when blast furnace tapping, which can prolong the service life of the iron trench.
Coal pitch is a material processed from coal tar with high viscosity and heat resistance. In the iron and steel industry, coal pitch is widely used in the preparation of trench materials.
Iron groove material is a kind of iron ore sintering material with mineral powder and binder as the main components, which has good air permeability and strength. The addition of coal pitch as a binder to the iron trench material can improve its sintering performance and strength, thereby improving the yield and quality of iron ore.
Coal pitch plays a key role in the trench material, mainly including the following points:
1.Bonding: Coal pitch has high viscosity and can adhere to mineral powder, so that various mineral powder particles can be firmly combined together to form an iron groove material with sufficient strength.
2.Improve sintering performance: During the sintering process, coal pitch will volatilize and form pores, which makes the trench material have good air permeability and helps to improve the sintering effect.
3.Enhanced strength: At high temperatures, coal pitch will partially carbonize to form graphite, which helps to improve the strength of the trench material.
4.Cost reduction: Compared with other binders, the cost of coal pitch is relatively low, which can reduce the manufacturing cost of trench material.
Through the above analysis, it can be seen that coal pitch mainly plays the role of binder in the trench material, which makes the trench material have good sintering performance, strength and low cost.