A low-cost tundish dry material with good resistance to steel slag penetration and its preparation method

Abstract

The invention discloses a low-cost tundish dry material with better steel slag penetration resistance and a preparation method of the low-cost tundish dry material and belongs to the technical field of unshaped refractory. The low-cost tundish dry material is characterized by being prepared by mixing the following raw materials in percentage by weight: 30 to 40 percent of magnesite clinker or electrofusion black sand with the particle size of 3.2 to 1mm, 30 to 45 percent of magnesite clinker or electrofusion black sand with the particle size of smaller than or equal to 1mm, 25 to 35 percent of magnesite clinker or electrofusion black sand of 200 meshes, 0 to 5 percent of quartz sand with the particle size of 1 to 0.12mm, 0 to 8 percent of quartz sand with the particle size of smaller than or equal to 0.12mm, 0 to 3 percent of phenolic resin, 2 to 5 percent of modified phenolic resin, 2 to 6 percent of magnesium sulfate heptahydrate, and 0 to 0.6 percent of boric acid, wherein the raw materials jointly constitute 100 percent. Compared with the prior art, a magnesium dry material for a continuous casting tundish working lining layer, disclosed by the invention, has the advantages of low production cost and good steel slag penetration resistance.

Description

technical field [0001] The invention relates to a low-cost tundish dry material with better steel slag permeability resistance and a preparation method thereof, belonging to the technical field of unshaped refractory materials. Background technique [0002] The tundish is an important equipment in the process of steelmaking and continuous casting. With the development of continuous casting technology today, the role of the tundish has been paid more and more attention by steel mills. With the development of continuous casting tundish metallurgy technology, the requirements for tundish lining refractory materials are getting higher and higher. The working layer of the inner lining of the tundish has also developed from thermal insulation boards and smear materials to dry materials widely used at present. Advantages of dry material: strong corrosion resistance to steel slag, which can greatly prolong the service life of the working layer. Good heat preservation, not easy to ...

AI Technical Summary

Problems solved by technology

[0004] There are many ways to improve the resistance to steel slag penetration and corrosion resistance of refractory materials, such as using good high-purity raw materials or adding some high-grade raw materials, etc., but these will increase production costs

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