Refractories for hot blast stove
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  • Refractories for hot blast stove

Refractories for hot blast stove

The hot blast stove is one of the important auxiliary equipment of the blast furnace. It is a kind of regenerative heat exchanger, which can provide a certain temperature of hot air for the effective operation of the blast furnace. It is the heat that heats the air blown into the blast furnace From room temperature to high temperature equipment。 Work equipment. The air volume must be sufficient and the supply must be continuous. Since 2000, the domestic and international ironmaking industries have regarded raising the air temperature of hot blast stoves as one of the important contents of the modernization of ironmaking technology. Practice has proved that every time the blast furnace air temperature is increased by 100℃, the coke ratio can be reduced by 20-25kg per ton of iron, and the output can be increased by 3-5%. At present, the air temperature of domestic blast furnace hot blast stoves is mostly around 1100°C, and only a few blast furnaces have air temperature exceeding 1200°C; the air temperature of many foreign blast furnaces exceeds 1200°C, and the air temperature of Finland's Lach plant reaches 1450°C. During the construction of Baosteel's No. 1 blast furnace (4063M3) in the 1980s, low creep bricks were introduced into my country from Japan. Because of its relatively low creep properties, it plays a vital role in the longevity of blast furnace hot blast stoves. Therefore, technicians in the domestic refractory industry have conducted in-depth and detailed research on it. The low-creep bricks developed by Professor Lin Binyin of Wuhan University of Science and Technology in the late 1980s began to be used in large quantities in WISCO's No. 5 blast furnace (3200M3, 16 years of first-generation furnace service), and low-creep bricks began to be widely used in domestic large and medium-sized blast furnaces. Hot air stove. Over the past two decades, low-creep bricks have made great contributions to the longevity of large and medium-sized hot blast stoves in my country. Especially since the beginning of the 21st century, low-creep bricks have become an indispensable product for blast furnace hot blast stoves. Our company's refractory material experts have long been committed to studying the longevity of refractory materials for blast furnace hot blast stoves. He has decades of practical experience in the research and quality control of low creep bricks. With reference to the indicators of companies such as Danieli of Italy, Carugin of Russia and Nippon Steel, based on the service life and material properties of refractory materials for hot blast stoves at home and abroad, a long-life blast furnace hot blast stove suitable for my country’s national conditions and characteristics has been developed. Thermal shock low creep series products, pure andalusite bricks and other products. This series of products have the characteristics of stable performance, low creep rate, strong peeling resistance, low price and long service life.

Key words:

Refractory materials for hot blast stove

Product Description

The hot blast stove is one of the important auxiliary equipment of the blast furnace. It is a kind of regenerative heat exchanger, which can provide a certain temperature of hot air for the effective operation of the blast furnace. It is the heat that heats the air blown into the blast furnace From room temperature to high temperature equipment。 Work equipment. The air volume must be sufficient and the supply must be continuous.

Since 2000, the domestic and international ironmaking industries have regarded raising the air temperature of hot blast stoves as one of the important contents of the modernization of ironmaking technology. Practice has proved that every time the blast furnace air temperature is increased by 100℃, the coke ratio can be reduced by 20-25kg per ton of iron, and the output can be increased by 3-5%. At present, the air temperature of domestic blast furnace hot blast stoves is mostly around 1100°C, and only a few blast furnaces have air temperature exceeding 1200°C; the air temperature of many foreign blast furnaces exceeds 1200°C, and the air temperature of Finland's Lach plant reaches 1450°C.

During the construction of Baosteel's No. 1 blast furnace (4063M3) in the 1980s, low creep bricks were introduced into my country from Japan. Because of its relatively low creep properties, it plays a vital role in the longevity of blast furnace hot blast stoves. Therefore, technicians in the domestic refractory industry have conducted in-depth and detailed research on it. The low-creep bricks developed by Professor Lin Binyin of Wuhan University of Science and Technology in the late 1980s began to be used in large quantities in WISCO's No. 5 blast furnace (3200M3, 16 years of first-generation furnace service), and low-creep bricks began to be widely used in domestic large and medium-sized blast furnaces. Hot air stove. Over the past two decades, low-creep bricks have made great contributions to the longevity of large and medium-sized hot blast stoves in my country. Especially since the beginning of the 21st century, low-creep bricks have become an indispensable product for blast furnace hot blast stoves.

Our company's refractory material experts have long been committed to studying the longevity of refractory materials for blast furnace hot blast stoves. He has decades of practical experience in the research and quality control of low creep bricks. With reference to the indicators of companies such as Danieli of Italy, Carugin of Russia and Nippon Steel, based on the service life and material properties of refractory materials for hot blast stoves at home and abroad, a long-life blast furnace hot blast stove suitable for my country’s national conditions and characteristics has been developed. Thermal shock low creep series products, pure andalusite bricks and other products. This series of products have the characteristics of stable performance, low creep rate, strong peeling resistance, low price and long service life.

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