Ladle bottom construction method

Abstract

The present invention relates to a bricking method for bottom of steel ladle, in particular to a steel ladle with high aluminum brick as the working layer of the ladle bottom. The bricking method divides the ladle bottom into a ladle bottom, a ladle bottom impact zone and a water area, wherein, the ladle bottom impact zone occupies 3 / 5 of the total area, meanwhile, a piling brick is arranged at the impact zone, bricking of the ladle bottom is from the water area to the wall area, after the brick is bricked around a reservation pit for the ventilation brick, one side near the bottom can be parallel with the bottom brick. A space is reserved before the bricking of the ladle bottom, and automatic material pouring is used for the space. After drying, material is used to thicken the ladle bottom. The present invention increases the service life of the ladle bottom brick to 116 times, increasing by 28.9 percent. Compared with current technology, steel consumption is reduced by 0.2-0.3Kg, and the cost of each ton steel is reduced by 1.5 yuan.

Description

technical field [0001] The invention relates to a ladle bottom masonry method, which belongs to the masonry method for casting molten substance container lining, in particular to a ladle suitable for using high alumina bricks as the bottom working layer. Background technique [0002] Those skilled in the art are well aware that ladle bottom masonry is a part of ladle masonry, and its masonry effect directly affects the overall life of the ladle. In the existing technology, two types of bricks are used for the bottom of the ladle, A: 300mm*180mm*80mm and B: 300mm*240mm*80mm. The bottom of the ladle is laid from the nozzle, and the side of the ladle is built with A bricks, and the molten steel impacts the area For vertical masonry, use 2 rows of B masonry for transition between side masonry and vertical masonry. After the tank bottom brick is built to the vicinity of the pit reserved for the breathable brick, the breathable seat brick is installed, and the side close to the t...

AI Technical Summary

Problems solved by technology

[0003] The disadvantage of this ladle bottom masonry method is that it is equivalent to only two layers of the bottom of the ladle, the bottom of the ladle is too flat, and the thickened castable cannot tighten the working layer, which affects the use effect of the thickened material, resulting in the bottom of the working layer The bricks of the working layer near the nozzle are easy to fall off, and the bricks in the impact zone are easy to form pits after being washed by molten steel. The bricks of the bottom working layer cannot meet the requirements of use, and the safety of use cannot be guaranteed, which affects the service life

At the same time, the strength of the castable is not high, and the resistance to molten steel erosion is not strong, which also affects the life of the bottom brick, which increases the consumption of refractory materials and increases the cost

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