A kind of repair material for steel ladle and preparation method thereof

Abstract

A repairing material for a steel ladle and a preparation method thereof, relating to a repairing material for a steel ladle, the repairing material for a steel ladle is composed of the following components in percentage by mass: 75-90% corundum and / or alumina particles and fine powder, 0-5 % Activated alumina fine powder, 2~9% magnesia, 1~4% sepiolite, 0~5% admixture; corundum and / or bauxite fine powder, activated alumina fine powder, magnesia fine powder, sea Paool, silica powder, and admixtures are weighed and bagged according to the formula requirements, and added to the mixer after the weight is correct. After mixing, the single weight is fixed and bagged for later use. Homogenized material and fibrous sepiolite, then add magnesia and corundum pellets of ≤1mm, after stirring, add 3~1mm, 5~3mm corundum or alumina pellets, discharge after stirring, and seal the finished product with plastic Packaging; the invention can be used directly for replenishment without adding water and stirring, and has good construction performance, and is used for thermal repair of refractory materials such as ladle breathable seat bricks, nozzle seat bricks, and ladle bricks.

Description

technical field [0001] The invention relates to the technical field of refractory materials, in particular to a repair material for a ladle and a preparation method thereof. Background technique [0002] As we all know, the ladle plays a major role in the refining outside the furnace during the molten steel smelting process. With the continuous improvement of the quality and performance of steel, the working conditions of the ladle are becoming more and more harsh. When the ladle is used in the middle and late stages, it is necessary to use Refractory materials are repaired to ensure the safe use of the ladle. [0003] Traditional repairing materials need to be mixed with water. In the process of on-site construction, it is difficult to accurately control the amount of water added to the repairing materials. Field workers generally add water based on experience, and it is easy to add too much or too little water, which will affect the repairing materials. The effect of use;...

AI Technical Summary

Problems solved by technology

[0003] Traditional repairing materials need to be mixed with water. In the process of on-site construction, it is difficult to accurately control the amount of water added to the repairing materials. Field workers generally add water based on experience, and it is easy to add too much or too little water, which will affect the repairing materials. The effect of use; the on-site repair material needs to be fully stirred after adding water, and the site needs to have a mixer, which requires a large investment. If the site is manually mixed, it is difficult to mix evenly; when the repair material is added, the ladle is in a "red hot" state. After adding water and stirring, the wet repairing material is added to the repaired part of the ladle, so that the refractory material in the ladle is in a state of rapid cooling, which is likely to cause cracks in the refractory material and increase the danger of using the ladle