Bottom slag dismounting device used for aluminum-zinc pot and application method of bottom slag dismounting device

Abstract

The invention discloses a bottom slag dismounting device used for an aluminum-zinc pot and an application method of the bottom slag dismounting device. The bottom slag dismounting device comprises a coating bath. Bottom slag is located at the bottom of the coating bath. The bottom slag dismounting device further comprises at least one bottom slag division part and pre-buried lifting hooks. The bottom slag is divided by the bottom slag division part into multiple bottom slag blocks. The lower ends of the pre-buried lifting hooks are located in the bottom slag blocks, and the upper ends of the pre-buried lifting hooks stretch out to the position above the bottom slag blocks. The bottom slag dismounting device used for the aluminum-zinc pot and the application method of the bottom slag dismounting device are simple in dismounting and low in cost.

Description

technical field [0001] The invention relates to the technical field of thermal coating, in particular to a device for removing bottom dross from an aluminum-zinc pot and a method for using the same. Background technique [0002] In the continuous production line of hot-dip galvanizing, galvanizing, and aluminum-plating, the strip steel plate enters the coating tank after unwinding-cleaning-annealing furnace to complete hot-dip galvanizing, and then is plated to control-cooling-finishing-stretching-leveling-passivation-infrared After drying-rewinding, the production is completed. The main function of the plating tank is to ensure that the plating attached to the surface of the strip is smooth, free of impurities, and free of missing plating. Just after the temperature of the plating tank reaches 600°C--700°C (pot), some iron elements and other elements will remain in the plating tank to form bottom slag. On the continuous hot-dip aluminum, galvanized or galvanized production...

AI Technical Summary

Problems solved by technology

On the continuous hot-dip aluminum, galvanized or galvanized production line, the quality of the plate surface is degraded (zinc slag marks) due to excessive bottom slag and too thick slag thickness, and the liquid in the pot is changed as a whole (to ensure that there is no deviation in the composition) After cooling with the bottom slag, a whole piece of bottom slag is formed, which cannot be completely cleaned, so the whole piece of bottom slag needs to be removed together with the refractory bricks, and finally the refractory bricks need to be rebuilt, resulting in high costs (the production line needs to be shut down for 20 days)

According to the existing technology, manual removal of slag is carried out in each maintenance cycle, and the slag in many places cannot be removed in time due to the large number of dead spots in the plating tank (pot). As the service time of the plating tank becomes longer, the liquid composition and dead spots will be affected There will be more and more slag, and the temperature control of the plating tank will use the induction body (the induction body works as a liquid exchange heat transfer to control the temperature) to mix the slag into the liquid, causing the slag particles to adhere to the surface of the plating tank and affect the quality of the surface , Due to the structure of the coating tank, the current method of completely removing the bottom slag requires removing the refractory bricks of the coating tank before removing the cooled bottom slag, which is troublesome and expensive

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