Ladle bottom casting method and lashed area reinforced castable construction mould thereof

Abstract

The invention discloses a ladle bottom casting method and a lashed area reinforced castable construction mould of the ladle bottom casting method. The ladle bottom casting method disclosed by the invention comprises the following steps that: (1) lashed area bricks, the lashed area reinforced castable construction mould, nozzle well blocks and air bricks are placed at the corresponding positions of a ladle bottom based on specified dimensions before casting; and (2) the lashed area reinforced castable construction mould is used for casting bottom lashed area reinforced castable at first and then bottom non-lashed area common castable, in order to ensure that the lashed area reinforced castable is completely cast on the lashed area, and the lashed area reinforced castable construction mould is drawn out to combine the edge parts of the two castables crosswise, and no hollow joint exists. The method disclosed by the invention solves the problems of poor resistance to washout and erosion in ladle bottom castable. The ladle bottom residual thickness after a use cycle of the ladle is larger than a safe residual thickness of 90mm, thus creating good conditions for safe ladle running.

Description

technical field [0001] The invention relates to a steel-making ladle repair construction technology, in particular to a ladle bottom pouring method and a construction mold for strengthening pouring material in an impact zone. Background technique [0002] The pouring mode adopted at the bottom of the ladle is generally as follows: arrange an impact brick in the impact area of ​​the bottom of the ladle, and use ordinary castables at the bottom of the ladle in areas other than the impact area of ​​the bottom of the ladle. [0003] However, during the use of the ladle, it was found that the impact point of the converter tapping steel flow sometimes deviates from the impact brick, and it often occurs that the ordinary ladle bottom castable on the side of the impact block at the bottom of the ladle punches a deep pit, and the residual thickness of 60mm (relatively thin) is less than Safety residual thickness (90mm). In severe cases, there is a crack that penetrates deep into the...

AI Technical Summary

Problems solved by technology

During the operation of the ladle, there is a serious problem that the ordinary castable at the bottom of the ladle is not resistant to erosion and corrosion, which will lead to serious steel leakage accidents at the bottom of the ladle

[0004] Adopt the existing ladle bottom pouring mode, which has a great impact on the existing production

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