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Magnesia carbon brick
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Magnesia carbon bricks have the characteristics of high-temperature resistance, strong slag resistance, good thermal shock resistance, and high high-temperature strength. Magnesia carbon refractory products are used as BOF linings made of magnesia sand and graphite as the main raw materials. According to the different parts of the converter, the selection of magnesia carbon bricks with corresponding performance is an effective way to improve the technical and economic indicators of the BOF.
The temperature of the furnace mouth and furnace cap changes dramatically, and the slag corrosion is serious. Magnesia carbon bricks with good thermal shock resistance and strong slag resistance should be selected.
In addition to the damage caused by blowing, there is no protective slag layer cover on both sides of the ear shaft, which is not easy to repair, and the carbon in the brick is easy to oxidize. High-quality magnesia carbon bricks with excellent slag resistance and good oxidation resistance should be built.
The slag line is in contact with the slag for a long time and is seriously corroded by slag. Magnesia carbon bricks with excellent slag resistance need to be built.
When oxygen is blown on the charging side, the splashing of slag and molten steel can easily cause chemical erosion, wear, scouring, and direct impact and erosion of scrap steel and molten iron. Magnesia carbon bricks with strong slag resistance, high-temperature strength, and good thermal shock resistance should be selected.
Compared with other parts, the furnace hearth and furnace bottom are less corroded, and ordinary magnesia carbon bricks can be used. When the top and bottom composite blowing technology is adopted, especially when CO2, O2, and other gases are blown at the bottom, the damage is more serious. Advanced magnesia carbon bricks with good oxidation resistance, good thermal shock resistance, high-temperature strength, and strong slag resistance should be selected.
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