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Converter oxygen top blowing design
Now, the iron and steel conglomerate includes three major production plants: ironmaking, steelmaking and rolling. Steel mills play a role in linking up with others. It is not only the user of hot metal produced by blast furnaces, but also the base for supplying billet to rolling mills. The normal production of steelmaking workshops has a significant impact on the entire steel complex.
At present, the large-scale oxygen converter steelmaking equipment, continuous production and high-speed production have achieved high productivity. This requires sufficient equipment to be completed together, and the arrangement of these equipment and the transportation process of various materials in the workshop. It must be reasonable to enable the smooth production.
The converter is the core equipment of the steelmaking workshop. Designing a converter whose furnace type reasonably meets the process requirements is the premise of ensuring the normal production of the workshop, and the furnace design is the key to the design of the entire converter.
Furnace lining profile 1 Furnace lining composition
The lining of the converter consists of a permanent layer, a filling layer and a working layer. The permanent layer is close to the furnace shell steel plate, usually made of a layer of magnesium brick or aluminum brick, and its role is to protect the furnace shell. When the furnace is repaired, the permanent layer of the furnace shell is generally not removed between the permanent layer and the working layer, and is generally made by tar magnesia or tar dolomite. The working layer is in direct contact with the molten steel, slag, and furnace air, and is continuously subjected to physical, mechanical, and chemical erosion, impact, and erosion. In addition, it is affected by process factors, so its quality is directly related to the age of the furnace. .
Domestic and foreign small and medium-sized converters commonly use tar dolomite or tar magnesia brick masonry
Furnace lining. In order to increase the service life of the lining, fired oil-impregnated bricks with magnesium dolomite as raw material have been widely used. China's large and medium-sized converters use magnesium carbon bricks.
2 Furnace lining (1) Laying sequence: The lining of the converter is to measure the center line of the hearth first, and then to carry out the furnace masonry, to carry out the furnace body, the furnace cap and the furnace mouth, and finally to perform the tapping. Furnaces in the furnace and outside the furnace. (2) Masonry requirements 1 Back-tight, reliable, full-fill leveling to minimize brick joints; 2 Dry layering of the working layer, brick-shaped joints filled with unshaped refractories, beating and sturdy; 3 must pay attention to leave certain Expansion joints. 3 Measures to improve lining life (1) Improving the quality of refractories; (2) Increasing the quality of linings with equalizing furnace linings; (3) Improving the operating process; (4) Thermal spraying of converters; (5) Lasers Monitoring; (6) Using slag splash guard technology;
120 tons of oxygen top-blown converter design