Slag-proof coating for steel ladle applied to casting and preparation method thereof

Abstract

The invention relates to the technical field of refractory materials, especially to a slag-proof coating for a steel ladle applied to casting and a preparation method thereof. The preparation method comprises the following steps: mixing and burdening raw materials consisting of, by mass, 40%-70% of a magnesium material, 10%-30% of quick lime, 3%-10% of silica fume, 5%-15% of clay, 2%-8% of PAC, 0.2%-1.0% of a water reducing agent and 0.01%-0.1% of explosion-proof fibers; adding water and carrying out stirring; and then smearing the formed mixture onto a working layer of the steel ladle. With the slag-proof coating, slag adhering to the surface of the working layer can be effectively prevented; slag is allowed to float on the surface of molten steel; the effects of purifying the molten steel and facilitating slagging-off are achieved; and a steel ladle repairing material can be replaced.

Description

technical field [0001] The invention relates to the technical field of refractory materials, in particular to a ladle anti-slag coating material for casting and a preparation method thereof. Background technique [0002] Casting ladles are used in foundries to receive molten steel and perform pouring operations. Slagging material residues and slag formed by additives during smelting will inevitably adhere to the working layer of the ladle. With the increase in the number of turnovers of the ladle, there will be more and more hanging slag. If it is not cleaned up in time, it will seriously affect the molten steel carried by the ladle. At the same time, practice has shown that slag has a serious erosion effect on the working layer of the ladle. Since there are slag residues on the surface of the working layer, it is difficult to make an accurate judgment on the use status of the working layer, which is also a major safety hazard. [0003] In order to ensure the normal turnove...

AI Technical Summary

Problems solved by technology

Slagging material residues and slag formed by additives during smelting will inevitably adhere to the working layer of the ladle. With the increase in the number of turnovers of the ladle, there will be more and more hanging slag. If it is not cleaned up in time, it will seriously affect the molten steel carried by the ladle. At the same time, practice shows that: slag has a serious erosion effect on the working layer of the ladle. Since there are slag residues on the surface of the working layer, it is difficult to make an accurate judgment on the use status of the working layer, which is also a major safety hazard.

[0003] In order to ensure the normal turnover of the ladle, the residue is manually removed, and the removed part is repaired with a plastic. This method can neither solve the problem of hanging slag, but also cause waste of labor and materials.

Temperature fluctuations will also cause slag spalling. If the slag cannot be removed effectively before the molten steel is poured, it will seriously pollute the molten steel and affect the quality of the casting.

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