According to the softening factor of the fire resistant ball in the hot air stove, increasing the density of the fire resistant ball, reducing porosity, and reducing the entry of elements such as potassium, sodium, and chlorine into the gas, an effective method is to treat the appearance of the fire resistant ball. Choosing ceramic fibers, heat-resistant materials, and high-density heat-resistant materials to form a stable, chemically bound, fine, and high emissivity maintenance coating can effectively block the dispersion of oxides, gases, and other substances, thereby improving the lifespan of fire-resistant balls.
Reducing the mass fraction of chlorine in blast furnace gas is the main way to prevent damage to the refractory ball of the hot blast furnace. The low-temperature recovery and pulverization of sintered ore are severe, and in actual production, adding CaCl2 to suppress pulverization. In a blast furnace, not only does hydrolysis reaction occur, but also alkali metal chlorides are produced, resulting in HCL gas entering the gas and causing damage to the fire resistant ball. Therefore, the mass fractions of potassium, sodium, and chlorine in the sintering components should be strictly controlled. According to the factors of low-temperature recovery pulverization of sintered ore, the metallurgical function can be improved by changing the composition and sintering parameters, reducing or not adding chloride inhibitors.
The metallurgical industry can learn from dechlorination methods in industries such as power and chemical engineering, and choose solid dechlorination agents to absorb chlorine in blast furnace gas, which has a good learning effect on HCL removal from blast furnace gas.
Strengthen the on-site operation of blast furnace production, reduce temperature fluctuations; Developing and utilizing online gas dust monitoring skills to replace damaged bags in a timely manner can reduce the content of gas dust and maintain the fire resistance of the hot air stove.
Contact me:
Email:wp@cnjingganrefractory.com/sdwenping@163.com
TEL: 86-0533-4188518 / FAX: 86-0533-4188518
Rose:+86-13275332819(wechat/whatsapp number)
