Anti-erosion castable for swing flow nozzle as well as preparation method and application of anti-erosion castable

Abstract

The invention relates to the field of metallurgy, and in particular, relates to an anti-erosion castable for a swing flow nozzle as well as a preparation method and application of the anti-erosion castable. The castable comprises the following components in parts by weight: 30-45 parts of compact corundum, 20-30 parts of white corundum, 8-15 parts of alumina powder, 12-25 parts of silicon carbide,0.5-2 part of silica powder, 1-3 parts of particle asphalt, 1.2-4 parts of graphite ultrafine powder, 1-5 parts of a binding agent, 0.01-0.08 part of a dispersing agent, 0.05-0.2 part of a water reducing agent, 0.03-0.06 part of a retarder, and 0.01-0.1 part of an explosion-proof agent. The preparation method is simple, the material cost is low, the obtained castable is good in stability, high instrength, resistant to erosion and long in service life, and due to the excellent performance, the swing use requirement of a blast furnace can be met.

Description

technical field [0001] The invention relates to the field of metallurgy, in particular to an anti-corrosion pouring material for a swing nozzle, a preparation method and application thereof. Background technique [0002] In recent years, in response to the country's energy-saving and emission-reduction requirements, newly-built blast furnaces have been developing toward large-scale and automated development, while reducing harmful gas emissions, reducing the labor intensity of furnace front workers, and improving the safety of production sites have also received widespread attention. This makes higher requirements for various production and construction processes including the swing nozzle. [0003] At the present stage, the main construction technology of the swing nozzle is to use ramming material or castable as a whole for pouring. When the iron is tapped, a certain amount of molten iron is stored in the swing nozzle, which plays a certain buffer role for the molten iron ...

AI Technical Summary

Problems solved by technology

Since the falling iron point is the main part of the swing nozzle wear, while other parts wear very little, so the overall service life of the swing nozzle is greatly limited, and the swing nozzle needs to be repaired as a whole, resulting in frequent repairs and labor-intensive workers. Large, high consumption of refractory materials

After the repair is completed, if the baking is not done properly, it is easy to form cracks, which brings safety hazards to the normal tapping of the blast furnace.

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