Products for iron ladle and torpedo0.00Our company has been engaged in research and development and production of aluminum silicon carbide carbon brick (ASC) products for iron ladle and torpedo cans for 15 years. After years of exploration and summary, we have developed a series of aluminum carbon products with Tianyu characteristics, which are mainly divided into High-temperature firing and low-temperature drying productsKeywords:low-temperatureiron ladletorpedo cans
Refractories for blast furnace0.00Blast furnace is the main equipment for ironmaking, it has the characteristics of large output, high productivity and low cost. With the progress of the iron and steel industry in various countries, blast furnaces are developing towards large-scale, high-efficiency and long-life, and gradually adopt new smelting technologies such as oxygen-enriched coal injection, high-air temperature operation, and high-pressure furnace roof.Keywords:operating conditionshigh temperature performancelong-term high temperature
Refractories for hot blast stove0.00The 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.Keywords:Hot stoveRegenerative heat exchangerThermal equipment
Sodium hexametaphosphate furnace refractory0.00Since 1994, our company has developed and manufactured a series of special products for the phosphorus chemical industry phosphate melting furnace (sodium hexametaphosphate furnace), and has served several well-known domestic phosphorus chemical companies. Developed unique zirconium-containing silicon carbide bricks, supporting high alumina bricks and castablesKeywords:Furnace design for sodium hexametaphosphatemain raw materialhigh-alumina bricks
Large furnace door brick for coke oven0.00The coke oven is an important thermal equipment that provides coke for iron and steel smelting. The function of the coke oven door is to seal the carbonization chamber so that the coal in the carbonization chamber is burned without air.Keywords:Low thermal expansion rateGood thermal stabilityiron and steel smelting
Large furnace door brick for coke oven0.00The coke oven is an important thermal equipment that provides coke for iron and steel smelting. The function of the coke oven door is to seal the carbonization chamber so that the coal in the carbonization chamber is burned without air.Keywords:Resistant to rapid heatGood chillingerosion
Filler brick0.00At present, our company's main products are divided into two parts: engineering products and functional products. The main products are ceramic cups, wind iron mouths; refractory materials for iron ladle and torpedo tanks; low creep piping bricks; cooling stave inlay bricks; various bulk materialsKeywords:Ceramic cupwind iron mouthRefractory materials for iron ladle and torpedo tank
Glazed furnace door tiles0.00The large furnace door bricks developed by our company have low porosity, low thermal expansion rate, and good thermal stability; it is easy to use, can quickly replace the furnace door bricks, and improve work efficiency; reduce heat loss and air caused by poorly sealed furnace doors Pollution, to achieve the purpose of energy saving and environmental protection; to avoid coking of the furnace door, greatly improving the service life of the furnace doorKeywords:Resistant to rapid heatHigh temperature resistanceBetter chilling
Riser tube0.00It has good integrity and airtightness, reduces heat loss and leakage caused by the lax sealing of the furnace door, and achieves the purpose of energy saving and environmental protection.Keywords:Low stomataNot easy to cokegraphiteEasy to clean
Furnace door brick installation0.00The large furnace door bricks developed by our company have low porosity, low thermal expansion rate, and good thermal stability; it is easy to use, can quickly replace the furnace door bricks, and improve work efficiency; reduce heat loss and air caused by poorly sealed furnace doors Pollution, to achieve the purpose of energy saving and environmental protection; to avoid coking of the furnace door, greatly improving the service life of the furnace doorKeywords:Brick lining thinningReduce furnace door loadImprove safety
Refractories for blast furnace
Blast furnace is the main equipment for ironmaking, it has the characteristics of large output, high productivity and low cost. With the progress of the iron and steel industry in the world, blast furnaces are developing towards large-scale, high-efficiency and long-life, and gradually adopt new smelting technologies such as oxygen-enriched coal injection, high-air temperature operation, and high-pressure furnace roof. Significant changes have taken place in the working conditions of the lining of the blast furnace, and the service life has been greatly reduced, generally only 5-6 years. Especially for the lower part of the blast furnace body, the waist and the abdomen, the service life is shorter. In order to adapt to this development, the refractories used in blast furnaces have also undergone major changes. New long-life refractories and high-efficiency refractories have gradually been applied, and the life of blast furnaces has been gradually improved.
At present, the world's longest life blast furnace is located at Onesteel's Waia plant in South Australia. The blast furnace was opened in 1980 and overhauled in 2004, which lasted 24 years. No. 6 blast furnace at Chiba Plant of Kawasaki Steel, Japan, 20 years and 9 months. In China, it is generally 5-8 years, with a few reaching 10 years or even more than 10 years. WISCO's No. 5 blast furnace opened in 1991 and was shut down for overhaul in June 2007, with a lifespan of 16 years.
According to the operating conditions and damage characteristics of modern blast furnace linings, it is required that the refractory materials must have:
1. Good high temperature performance, good thermal stability under long-term high temperature;
2. The strength at room temperature and high temperature should be high, and the wear resistance should be good;
3. High density, good thermal conductivity, low apparent porosity, small shrinkage at high temperature;
4. It can resist the violent erosion and erosion of molten iron, molten slag, blast furnace gas and soot under high temperature and high pressure;
5. The external dimensions of the refractory bricks are accurate, which can ensure that the brick joints meet the specified requirements.
The production of high-quality refractory materials must have high-quality refractory raw materials, reasonable process formulas, strict quality control, necessary testing equipment and many professional talents. In particular, the current raw material quality is uneven, the grade is different, and the smelting technology is different. A single product must undergo repeated trials to ensure that the physical and chemical indicators meet the requirements. We make every effort to create high-quality refractories under the Tianyu brand for you to ensure the longevity and safety of your blast furnace.
Special product---ceramic cup
At present, long-life large and medium-sized blast furnace bottoms generally use carbonaceous bottom-ceramic masonry composite furnace lining technology. In the early 1990s, our company cooperated with Wuhan Iron and Steel Design Institute and other units to develop plastic-combined corundum composite bricks. The structure is compact, and the high-temperature flexural strength is high; and in the high-temperature reducing atmosphere, the Si in the matrix It can react with C and N2 to form carbides and nitrides with good corrosion resistance to slag, molten iron and alkali metals, and fill the gaps on the surface to form a good protective layer with excellent corrosion resistance.
We have developed several generations of products, which have been widely used in large blast furnaces such as Anshan Iron and Steel, Tangshan Iron and Steel, Baotou Steel and other large-scale blast furnaces, with good results, and exported to India, Vietnam and other countries.