Method for controlling electrolytic cell under low-voltage production
A control method and electrolytic cell technology, applied in the field of energy compensation and blanking control of aluminum electrolysis, can solve problems such as uncontrolled concentration, voltage swing, high noise, etc., and achieve the effect of ensuring energy and reducing the number of electrolyte oscillations
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[0012] Embodiments of the present invention: The present invention adopts a new control logic, has passed the test and has been used in Hunan Chuangyuan 240KA and 300KA electrolyzers, and the effect is obvious. The invention works according to the following logic: First, when the cell controller detects the anode replacement instruction, it automatically raises the anode for 1.5 seconds, replenishes energy in advance, and then checks whether the anode is replaced by the voltage change. After the anode replacement is completed Enter the additional control after the pole change, increase the target voltage by 70MV (the additional voltage can be set by the user according to the specific tank condition), and the additional time is 3 hours (the additional time can also be set by the user according to the tank condition), the whole The additional control process automatically controls the alumina concentration to ensure that the alumina concentration is between 1.5% and 2.5%. This not...
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