Reworked material working lining of continuous casting tundish and preparation method for reworked material working lining

Abstract

The invention relates to a reworked material working lining of a continuous casting tundish and a preparation method for the reworked material working lining. The reworked material working lining is divided into an impact zone working lining and a non-impact zone working lining, which are internally attached to a permanent lining; the non-impact zone working lining sequentially comprises a ladle edge working lining, a ladle wall working lining and a ladle bottom working lining from top to bottom; the impact zone working lining is built by adopting waste magnesia-carbon bricks and regenerated coating material mud through a wet process; the ladle wall working lining and the ladle bottom working lining are built by adopting a regenerated dry material; an overflow port working lining and the lade edge working lining are built by adopting the regenerated coating material; a space between the two sides of a turbulent flow controller and the ladle wall permanent lining is filled by waste; and a regenerated coating material layer coats the outer surfaces of the waste magnesia-carbon bricks, the outer surface of the waste and the upper surface of the turbulent flow controller. By applying the reworked material working lining, the service life of a shaped blank continuous casting tundish reaches 33-38 hours, and refractory material cost of the regenerated material working lining is reduced by more than 60% year on year.

Description

technical field [0001] The invention belongs to the technical field of iron and steel metallurgy continuous casting tundish technology, and relates to a continuous casting tundish working lining made of recycled materials and a preparation method thereof. Background technique [0002] The lining of continuous casting tundish is generally composed of permanent lining and working lining. The permanent lining is generally made of castable as a whole, and the working lining is generally constructed of magnesium spread material or dry material. In recent years, with the large-scale and high-efficiency continuous casting technology progress of continuous casting machines, the dry material working lining of continuous casting tundish has been rapidly popularized and applied. The main problems of the continuous casting tundish working lining prepared by the existing technology are: the cost of the dry material working lining refractory material produced with magnesia as the main raw...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a continuous casting tundish working lining made of recycled materials and a preparation method thereof, aiming at the problems existing in the existing continuous casting tundish working lining technology. Dedusted ash is the main raw material to prepare waste magnesia carbon bricks for direct use and regenerated smear materials and regenerated dry materials for use in different parts of the continuous casting tundish lining, which creatively solves the existing continuous casting tundish work Due to the problems of heavy local erosion in the lining impact area and high cost of working lining refractory materials, the service life of the invention for the continuous casting tundish of special-shaped billets reaches 33-38 hours, and the cost of refractory materials for the working lining of recycled materials is reduced by more than 60% year-on-year, realizing Low cost and long service life of continuous casting tundish working lining

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