Start-up method of aluminum electrolytic cell
An aluminum electrolytic cell and electrolyte technology, applied in the field of aluminum electrolysis, can solve the problems of affecting the life of the cell, difficulty in temperature control, and cathode erosion.
Active Publication Date: 2021-12-14
NORTHEASTERN UNIV LIAONING +1
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Problems solved by technology
[0006] In view of this, the present application provides a method for starting an aluminum electrolytic cell, the main purpose of which is to solve the technical problems that the temperature control is difficult during the firing and starting process of a large aluminum electrolytic cell, and the cathode will be corroded, so that the service life of the cell is affected
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[0021] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.
[0022] In the example, as figure 1 As shown, a method for starting an aluminum electrolytic cell is provided, and the application of the method to an aluminum electrolytic cell is taken as an example for illustration, including the following steps:
[0023] 101. Before the aluminum electrolytic cell enters the start-up phase, disconnect the aluminum electrolytic cell from the series power supply, and connect the aluminum electrolytic cell to the independent AC power supply.
[0024] 102. According to the start-up process of the aluminum electrolytic cell, adjust the voltage, current and current distribution of the independent AC power supply so that the aluminum electrolytic cell reaches the tempera...
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The invention discloses a method for starting an aluminum electrolytic cell and relates to the technical field of aluminum electrolysis. The methods include: before the aluminum electrolytic cell enters the start-up phase, disconnect the electrolytic cell from the series power supply, and connect the aluminum electrolytic cell to the independent AC power supply; adjust the independent AC power supply according to the starting process of the aluminum electrolytic cell Voltage, current and current distribution, so that the aluminum electrolytic cell reaches the temperature value required by the start-up process; after the aluminum electrolytic cell is filled with aluminum liquid and started, turn off the independent AC power supply; disconnect the independent AC power supply from the aluminum electrolytic cell, and restore The connection between the aluminum electrolytic cell and the series power supply, so that the aluminum electrolytic cell can be turned into a normal working state. The above method makes the start-up process of the aluminum electrolytic cell easy to control, improves the control accuracy of the temperature of the electrolytic cell during the start-up process, reduces the difficulty of operation and labor intensity, and avoids the expansion, damage and chemical erosion of the cathode carbonaceous material of the electrolytic cell at the same time, effectively Extends the cell life of the electrolyzer.
Description
technical field [0001] The invention relates to the technical field of aluminum electrolysis, in particular to a method for starting an aluminum electrolysis cell. Background technique [0002] The life of the cell is one of the important economic indicators of the aluminum electrolytic cell. Compared with the same type of aluminum electrolytic cells in advanced countries in my country, the large and medium-sized aluminum electrolytic cells in China have a relatively short life span. Among them, the roasting and starting process of the aluminum electrolytic cells will directly It affects the life of the electrolytic cell. If the roasting start effect is not good, it is easy to cause early damage to the cathode of the electrolytic cell. The early damage characteristics of the aluminum electrolytic cell include the gradual increase of the cathode voltage, the cathode bulge, the cathode hole, and the iron content of the aluminum liquid. Increased height, etc., the damaged parts i...
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IPC IPC(8): C25C3/06
CPCC25C3/06
Inventor 李斌川李全林胡宏武韩庆陈建设刘奎仁
Owner NORTHEASTERN UNIV LIAONING