Working layer for forming continuous casting tundish refractory lining

Abstract

The invention discloses a working layer for forming a continuous casting tundish refractory lining. The continuous casting tundish refractory lining is composed of a heat insulation layer, a permanentlayer and the working layer. The composition proportion of the continuous casting tundish refractory lining is shown in the specification, by weight, 15 to 20% of waste magnesia carbon brick with theparticle size of 3-5 mm, 35 to 40% of waste magnesia carbon brick with the particle size of 0.1-2.9 mm, 8 to 14% of dead burned magnesia with the particle size of 0.089-1 mm, 28 to 32% of dead burnedmagnesia with the particle size of 0.088 mm, 3 to 4% of a binding agent and 1.4 to 1.6% of an additive. The working layer is reasonable in design, the probability of secondary oxidation of molten steel in the tundish can be reduced, hydrogen absorption of the molten steel is reduced, pollution to the molten steel is reduced, the service life of a working layer is prolonged, the quality of steel billets is improved, and the labor productivity in the tundish maintenance process is improved.

Description

technical field [0001] The invention belongs to the improvement of the working layer material constituting the refractory inner lining of the continuous casting tundish, in particular to the working layer constituting the refractory inner lining of the continuous casting tundish. Background technique [0002] The tundish is a transitional device between the crystallizer and the ladle in the steelmaking and continuous casting process. The use of the tundish can make the molten steel injected into the mold better and more smoothly, and can ensure the stability and stability of the molten steel and the role of clean molten steel. Therefore, the tundish In the process of steelmaking, the role is to connect the previous and the next. Tundish refractory lining mainly includes insulation layer, permanent layer and working layer. [0003] The dry material of the tundish is the material of the working layer lining the tundish, which is in direct contact with molten steel and slag, a...

AI Technical Summary

Problems solved by technology

But the disadvantage is that the cost of raw materials is high, the requirements for construction technology are high, and there are high requirements for the operation level of the tundish working layer of the workers.

Images