Ladle bottom masonry method for prolonging service life of steel ladle

Abstract

The invention belongs to the technical field of steel ladle bottom masonry, and discloses a ladle bottom masonry method for prolonging the service life of a steel ladle. First refractory bricks and second refractory bricks are both impact-resistant refractory bricks; the masonry method comprises the following steps that firstly, an edge zone of a central tapping area is built, first refractory bricks are adopted for building from a square brick of a ladle bottom water nozzle of the steel ladle, during building, the first refractory bricks are transversely built till a gap of 200-300 mm is reserved in a steel ladle ventilation brick cup, and a central edge building area is formed; the first refractory bricks are vertically built in the center of the central edge building area; the second refractory bricks are transversely built in a non-impact area around the central edge building area; and corundum castable is poured into the gap reserved in the steel ladle ventilation brick cup. Tight combination is ensured, the scour resistance of the ladle bottom is improved, the service life is longer, and the shutdown of replacing castable at the ladle bottom is eliminated, so that the shutdown frequency of the steel ladle and the consumption of refractory materials of the steel ladle are reduced.

Description

technical field [0001] The invention belongs to the technical field of ladle bottom masonry, and in particular relates to a ladle bottom masonry method for longevity. Background technique [0002] At present, most steel mills mainly adopt two types of ladle bottom masonry methods. One is that the bottom of the ladle adopts the combined masonry method of aluminum-magnesium-carbon bricks in the impact area and aluminum-magnesium-carbon bricks in the non-impact area. It is more serious, so the aluminum-magnesium-carbon bricks in the impact area are generally 20-30mm thicker than the non-impact area. Although the non-impact area is thinner than the impact area, there are very few parts that need to be repaired in the non-impact area of ​​the ladle. , but this method is not suitable for small-scale ladle tapping, and has high requirements for tapping operations, and there is a safety risk in the impact of aluminum-magnesium-carbon bricks in the non-impact area due to the thin br...

AI Technical Summary

Problems solved by technology

One is that the bottom of the ladle adopts the combined masonry method of aluminum-magnesium-carbon bricks in the impact area and aluminum-magnesium-carbon bricks in the non-impact area. It is more serious, so the aluminum-magnesium-carbon bricks in the impact area are generally 20-30mm thicker than the non-impact area. Although the non-impact area is thinner than the impact area, there are very few parts that need to be repaired in the non-impact area of ​​the ladle. , but this method is not suitable for small ladle tapping, and has high requirements for tapping operation, and the impact to the non-impact area of ​​aluminum-magnesium-carbon bricks has a safety risk due to the thin brick body

The other is the masonry method in which the bottom of the ladle is made of aluminum-magnesium-carbon bricks combined with castables at the bottom of the ladle. When the ladle is working, it impacts the surface castables. If the castables fall off, the maintenance of the surface layer will be stopped. Due to the poor erosion resistance of the castables, the service life is low. , many maintenance times, high cost