Aluminum electrolytic cell crust breaking and discharging integrated device

Abstract

The invention relates to an aluminum electrolytic cell crust breaking and discharging integrated device. The aluminum electrolytic cell crust breaking and discharging integrated device comprises a constant-volume device. The constant-volume device is provided with a frame body extending upwards and a material guide barrel vertically extending downwards, and the bottom of the material guide barrelis provided with an opening. A linear driving part is fixed to the frame. The inner wall of the material guide barrel is provided with an annular sealing element. The output end of the linear drivingpart is connected with a moving guide rod. The moving guide rod penetrates through a feed port, a discharge port and an opening of the annular sealing element in sequence from top to bottom. The lowerend of the moving guide rod is connected with a crust breaking hammer head. A first piston matched with the feed port, a second piston matched with the discharge port and a third piston matched withthe opening of the annular sealing element are sequentially arranged on the moving guide rod from top to bottom. The aluminum electrolytic cell crust breaking and discharging integrated device can accurately position a discharge port fire eye, can effectively prevent the situation that material shortage of an electrolytic cell occurs due to flying of aluminum oxide powder and improve the working efficiency and is convenient to maintain; the equipment cost and operating cost can be reduced, and the manual labor intensity can be reduced.

Description

technical field [0001] The invention relates to an integrated device for shelling and unloading of an aluminum electrolytic cell, in particular to the production of aluminum metal and aluminum alloy by electrolysis of existing prebaked aluminum, and belongs to the field of metallurgical equipment. Background technique [0002] At present, the molten salt electrolysis method is the main method for producing aluminum metal. Alumina is the raw material for producing aluminum metal. Due to the operating requirements of the aluminum electrolytic cell, it is necessary to form a shell surface of a certain thickness on the upper part of the cell during electrolysis. On the one hand Insulate the molten electrolyte inside the aluminum electrolytic cell, on the other hand, reduce the volatilization of a large amount of fluoride and the oxidation of the anode and the side blocks of the cell. However, this puts forward certain requirements when adding alumina raw materials. Firstly, a di...

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Problems solved by technology

[0003] However, the existing aluminum electrolytic cell shelling and unloading device are two relatively independent devices, which are equipped on the upper part of the aluminum electrolytic cell. Since the shelling and unloading device are separate separate devices, it is necessary to Start two devices one after another, the operation procedure and process are complicated, and the equipment investment is large and the installation is difficult, especially the upper space of the tank body is occupied by a large amount, which makes the upper structure of the electrolytic cell crowded

At the same time, the material guide tube of the feeding device is on the side of the shelling hammer, so that the alumina has a certain inclination when it is discharged through the material guide tube, resulting in a large loss of alumina flying

[0004] Chinese invention patent CN104593827B discloses an aluminum electrolytic cell alumina shelling and unloading integrated device and method, the device realizes the integration of the shelling mechanism and the unloading mechanism in the aluminum electrolytic cell The material steps are relatively independent, and it takes a long time for shelling and cutting. It needs to use linkage solenoid valves and other devices, and the structure is relatively complicated. At the same time, the solenoid valve has high environmental requirements and is difficult to adapt to the electrolysis production environment. The superstructure of the tank and the complexity of the control system

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