Anti-erosion calcium aluminate castable

Abstract

The invention relates to an anti-erosion calcium aluminate castable. The calcium aluminate castable is prepared from the following components in percentage by weight: 65 to 69.9 percent of a mixture of calcium aluminate aggregate and fine powder, 10 to 13 percent of aluminum oxide hollow spheres, 2 to 10 percent of pure aluminate cement, 5 to 11 percent of aluminum oxide micro powder, 0.5 to 3 percent of an additive and 0.1 percent of a high-efficiency dispersing agent, the sum of the weight of the components is 100%. The calcium aluminate castable disclosed by the invention is high in construction speed, low in volume density and high in steel slag and molten steel erosion resistance, and plays roles in energy conservation, emission reduction, safety guarantee and the like.

Description

technical field [0001] The invention relates to a permanent lining of a ladle and a permanent lining of a ladle, in particular to an anti-corrosion calcium aluminate pouring material. Background technique [0002] For a long time, high-alumina, aluminum-magnesium castables or high-alumina bricks have been used for both the permanent lining of the ladle and the permanent lining of the ladle. At the same time, due to the high density, the thermal conductivity of the material increases, so that the temperature of molten steel and molten iron drops rapidly, which is particularly unfavorable for heat preservation and energy saving, and increases the heat consumption of the steelmaking plant. A large amount of heat It is wasted and consumed, and even a series of accidents such as difficulty in tapping may occur due to severe temperature drop. If the permanent lining is built with high-alumina bricks, the permanent lining cannot become a whole due to the brick joints. Once the wor...

AI Technical Summary

Problems solved by technology

[0002] For a long time, high-alumina, aluminum-magnesium castables or high-alumina bricks have been used for both the permanent lining of the ladle and the permanent lining of the ladle. At the same time, due to the high density, the thermal conductivity of the material increases, so that the temperature of molten steel and molten iron drops rapidly, which is particularly unfavorable for heat preservation and energy saving, and increases the heat consumption of the steelmaking plant. A large amount of heat It is wasted and consumed, and even due to the severe temperature drop, it will lead to a series of accidents such as difficulty in tapping

If the permanent lining is built with high-alumina bricks, the permanent lining cannot become a whole due to the brick joints. Once the working lining is broken down by steel slag, the permanent lining will easily cause a bag-wearing accident due to the brick joints. The steel mill has caused huge losses. The use of high-alumina bricks to build permanent linings is not suitable for the fast-paced steelmaking needs due to its own low efficiency and slow work progress.