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Explosion-proof ASC (Al2O3-SiC-C) refractory castable for iron ladles

A technology of refractory castables and molten iron, applied in the field of refractory materials, can solve problems such as bursting and bulging of pouring bodies, achieve the effect of enhancing explosion-proof performance and controlling the hardening time of pouring

Inactive Publication Date: 2015-04-29
CHANGXING YOULIANMA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the castable hardens too quickly or too slowly, there will be problems of bulging and bursting of the castable

Method used

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  • Explosion-proof ASC (Al2O3-SiC-C) refractory castable for iron ladles
  • Explosion-proof ASC (Al2O3-SiC-C) refractory castable for iron ladles
  • Explosion-proof ASC (Al2O3-SiC-C) refractory castable for iron ladles

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Embodiment Construction

[0025] Embodiment 1 of a refractory castable for an explosion-proof ASC ladle of the present invention comprises the following components, and each component is respectively according to the mass fraction:

[0026]

[0027] Wherein, the low cement binding ASC castable base material is composed of low cement, ASC and binder. The low cement includes cement, CaO and dispersant. The ASC material includes dense corundum, silicon carbide, carbon material, silicon oxide fine powder and corundum fine powder. Al in the dense corundum 2 o 3 The content of SiC in silicon carbide> 98%, the content of SiC in silicon carbide> 97%, the content of C in carbon materials> 85%, and the content of SiO in silicon oxide powder 2 content > 97%, Al in corundum powder 2 o 3 The content of > 97%. The particle size of the dense corundum is 5-8 mm, the particle size of the silicon carbide is 1-3 mm, the particle size of the carbon material is 1-3 mm, the particle size of the silicon oxide powder...

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Abstract

The invention discloses an explosion-proof ASC (Al2O3-SiC-C) refractory castable for iron ladles, which comprises the following components in percentage by mass: 85-95% of low-cement combined ASC casting base material, 1-3% of aluminum powder, 2-10% of explosion-proof fiber, 1-10% of basic emulsion antiknock agent and 1-10% of organic gas former, totaling 100%. The low-cement combined ASC casting base material is composed of low cement, ASC and a binder. By adding the metal Al powder, explosion-proof fiber, basic emulsion antiknock agent and organic gas former, the explosion resistance of the refractory castable for iron ladles is greatly enhanced, and the casting hardening time is effectively controlled, thereby solving the problems of expansion and blowout of the casting due to over-quick hardening and over-slow hardening of the castable. The refractory castable has the advantages of high use safety, long service life and low consumption, is convenient for construction and repair, is an important assurance for stable and smooth production in the furnace, and changes the working environment of the steel plant.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and relates to an explosion-proof ASC ladle refractory castable. Background technique [0002] Low cement binding Al for ladle 2 o 3 -SiC-C castable contains ultra-fine powder and dispersant, so it has good fluidity, high refractoriness, good compactness and high strength of castable body, and the ladle is resistant to erosion, erosion and long service life. However, the biggest problem with this material is that it needs to be cured after pouring and cannot be baked too quickly, otherwise it will cause low strength and explosion burst accidents. Therefore effectively solving the problems of quick-drying demoulding and fast baking of the ladle castable and preventing explosion and bursting is the key to whether the material can be used for the ladle, and it is also the main direction of the present invention. [0003] Some castables are mainly resin-bonded, and the amount of resin...

Claims

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Application Information

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IPC IPC(8): C04B35/66
Inventor 江红芬荆人杰应思远费勇荆元明蒋志忠
Owner CHANGXING YOULIANMA TECH
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