Preparation process of electrolytic aluminum

Abstract

The invention relates to a preparation process of electrolytic aluminum. The process comprises the four steps of electrolysis, refining, casting and press-rolling saw cutting. A press-rolling mechanism in the electrolytic aluminum preparation process step D comprises a press-rolling part and a marking part, wherein the press-rolling part comprises a connecting belt and two press-rolling rollers, each press-rolling roller comprises a roller shaft and a roller wheel, two ends of the connecting belt are wound on the two roller shafts respectively and connected with the two roller shafts in a meshed mode, a plurality of cavities are formed in the roller, a plurality of exhaust mechanisms are arranged in the cavities, each exhaust mechanism comprises a spring, a movable plate and a piercing assembly, the upper end of each spring is fixedly connected to the top of the corresponding cavity, the lower end of each spring is fixedly connected to the top wall of the corresponding movable plate, and each piercing assembly is fixedly connected to the bottom wall of the corresponding movable plate; and the marking part comprises a rectangular shell, a temperature sensor and a marking assembly, the temperature sensor is fixed to the left side in the rectangular shell, the lower end of the temperature sensor penetrates through the bottom wall of the rectangular shell, and the marking assembly is fixedly connected to the right side in the rectangular shell and movably connected with the temperature sensor.

Description

technical field [0001] The invention relates to the technical field of production of electrolytic aluminum liquid, in particular to a preparation process of electrolytic aluminum. Background technique [0002] An important indicator of the production of electrolytic aluminum liquid is the quality of aluminum liquid. Higher purity aluminum liquid can make the formed product have good physical and chemical properties. [0003] When producing aluminum slabs, due to various reasons during the melting process of aluminum ingots, gas sometimes enters the molten aluminum. When the molten aluminum with gas passes through the nozzle in front of the upper and lower rolls of the casting roll, bubbles will be formed at the front of the nozzle, and the bubbles will be brought below the surface at the moment the molten aluminum is formed, forming gas in the shallow surface of the slab. Road, its manifestation is that there are inconspicuous white stripes on the slab after casting and rol...

AI Technical Summary

Problems solved by technology

[0004] At present, when the front-line workers of aluminum casting find that there are inconspicuous white stripes on the aluminum slab after casting and rolling, and then confirm it as an air channel through low-magnification corrosion, the general treatment method is to stop the machine immediately to block the aluminum liquid flowing to the casting nozzle, and then Remove the nozzle in use and replace it with a new one, and then restart the production of the vertical plate. Such a shutdown will take 3 hours to solve the above problems, which not only delays the normal production, but also requires at least 2 -3 tons of slabs cannot be used and need to be returned to the furnace for remelting, and the loss of one shutdown is about 3,000 yuan / ton

According to statistics, the scrap rate of aluminum slabs due to airway problems is about 1%. Based on the annual output of 25,000 tons, excluding the irreparable factors that workers can only find out the airway after a delay, the above problems can be solved every year. The cost is also about 500,000 yuan, which greatly increases the production cost

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