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

A castable and powder technology, which is applied in the field of metallurgy, can solve problems such as limiting the service life of swing nozzles, high labor intensity of workers, and potential safety hazards of blast furnaces, and achieve the effects of increasing service life, improving corrosion resistance, and increasing strength

Active Publication Date: 2021-02-19
BAOJIUHE REFRACTORY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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

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Embodiment Construction

[0047] The technical solutions of the present invention are illustrated below through specific examples. It should be understood that one or more method steps mentioned in the present invention do not exclude that there are other method steps before and after the combined steps or other method steps can be inserted between these explicitly mentioned steps; it should also be understood that these The examples are only for illustrating the present invention and are not intended to limit the scope of the present invention. Moreover, unless otherwise stated, the numbering of each method step is only a convenient tool for identifying each method step, and is not intended to limit the sequence of each method step or limit the scope of the present invention. The change or adjustment of its relative relationship is in In the case of no substantive change in the technical content, it shall also be regarded as the applicable scope of the present invention.

[0048] In following embodim...

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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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/101
CPCC04B35/101C04B2235/3418C04B2235/3826C04B2235/428C04B2235/3222C04B2235/3203C04B2235/425C04B2235/9607C04B2235/9684C04B2235/9676C04B2235/9615C04B2235/77C04B2235/96
Inventor 田峰胡波吴佳彬武传金
Owner BAOJIUHE REFRACTORY
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