Environment-friendly composite tundish dry liner

Abstract

The invention relates to black inside linings for metallurgical continuous casting tundish, wherein the constituents of the lining material comprise (by weight percent) magnesite 30-70 parts, calcite or lime stone 5-50 parts, spinelle 2-15 parts, bauxite 2-15 parts, conjugation agent 1-15 parts, agglutinant 0.2-5 parts. The conjugation agent is selected from inorganic salts or frosted sugar, refined white sugar and crystallized sugar, the agglutination strengthening agent is selected from boracic acid, borax, table salt, silicate, iron oxide red and microcosmic salts.

Description

technical field

[0001] The invention relates to a black metallurgical continuous casting tundish lining. Background technique

[0002] At present, the tundish dry lining materials widely used at home and abroad are still mainly limited to magnesium and magnesium-calcium, and the former is the main one, and the binder is almost all phenolic resin or asphalt powder. The ubiquitous problems are: the release of irritating and toxic gases during baking, which is harmful to the health of the workers on the production and use sites, and the ability to resist the penetration and erosion of slag during use is poor. Contents of the invention

[0003] The purpose of the present invention is to provide an environment-friendly composite tundish dry lining, which can significantly reduce the production cost of continuous casting, does not produce irritating and toxic gases during baking, does not pollute the environment, and is non-toxic to the body of production and construction person...