Paint for continuous casting pouring box work liner and preparing technique thereof

Abstract

The invention discloses a painting for continuously cast pouring basket working lining and a producing technique thereof. The components of the painting is as follows according to parts by weight: 50-90 parts of forsterite raw material, 10-50 parts of magnesia, and 3-5 parts of composite additive, wherein the composite additive is at least one of organic fiber, paper fiber, lime, trimeric sodium phosphate, sodium hexametahposphate, clay or silicate. The producing technique of the painting is evenly mixing and stirring the forsterite raw material, the magnesia and the composite additive according to the parts by weight to lead the mixture to show no evident white trace, thereby obtaining the painting used for the continuously cast pouring basket working lining. The painting has excellent smearing, sintering, anti-scouring, anti-dreg erosion and anti-peeling properties, is free from collapsing and pollution, is environment-friendly, and has long service life, low production cost and simple and convenient preparation method.

Description

technical field [0001] The invention relates to an unshaped refractory material and its production process, in particular to a coating for continuous casting tundish lining in the steelmaking process and its production process. Background technique [0002] As the market has higher and higher requirements for steel quality, the steelmaking process has been continuously refined, and the refractory materials used for the working lining of the continuous casting tundish are constantly being updated, from no working lining to heat insulation boards, from heat insulation boards to existing intermediate Pack paint and keep improving. However, many new problems have also been raised, which are mainly reflected in the following aspects: [0003] 1. The price of raw materials for tundish coatings has risen, and the cost of products has increased. Initially, the tundish coating used mid-grade magnesia as the aggregate, adding clay, dextrin and other admixtures, which could meet the ...

AI Technical Summary

Problems solved by technology

However, with the rising price of raw materials and changes in the steel development situation, the profit margin of coatings is gradually shrinking, which seriously affects the benefits of enterprises. It is urgent to develop new low-cost tundish coatings.

[0004] 2. The performance of tundish coating needs to be improved

[0005] 3. The coating of the tundish has a phenomenon of collapse, and the performance of automatic turning is poor

The practice of various production plants shows that most of the existing tundish coatings have collapsed packages, and the low-melting substances in the coatings increase after adding admixtures, resulting in corrosion resistance

At the same time, due to the bonding of the permanent layer, the performance of its automatic turning over is poor

[0006] In order to solve the above problems, the current tundish coatings generally use a composition of 20-50% forsterite raw meal and clinker. Although this reduces the cost to a certain extent, the above-mentioned collapse phenomenon and poor automatic turning performance Defects are still not fundamentally resolved