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ã€China Aluminum Network】 Electrolytic aluminum production is a continuous production, the series structure of electrolytic cells determines the operation mode of electrolytic aluminum production, the production of electrolytic cells needs to operate at high temperature, and powerful current needs to continuously supply electrolytic cells. Production to maintain the energy required for electrolytic cell production. Once an electrolyzer is put into operation, it marks its continuous production and operation. Once it is stopped, it will bring huge economic losses to the tank. In particular, the current large-scale production of electrolytic aluminum production companies is put into operation. Although intensive automatic control and large-scale mechanized control have been achieved, economic benefits have been improved, and production costs have been reduced, their safety production has also increased risks accordingly, because Electrolytic cell, the cost for a single cell of each cell has exceeded 3 million yuan, and the cost of the electrolytic aluminum series with an annual output of more than 200,000 tons has exceeded several billion yuan. Once the series is discontinued, the economic losses caused to the company and the country are not Estimated.
On July 1, 2006, the entire Central China Power Grid was blacked out, and the electrolytic series just put into operation by an aluminum company in western Henan caused a devastating blow in the blackout; in December 2007, an aluminum company in Qinghai Province exploded due to a short circuit in the electrolytic cell. The series of power outages lasted for six hours and the direct economic losses exceeded 300 million. The painful lessons again and again gave the entire aluminum industry a wake-up call for safe production. On May 12, 2008, the Sichuan Wenchuan earthquake caused a devastating blow to the Sichuan Aba Aluminum Plant. Humanity is helpless in the face of natural disasters, but we should be able to prevent any accidents in addition to it. Only by doing a good job of preventive measures can we ensure the safe operation of electrolytic aluminum production.
(I) Characteristics of aluminum electrolysis production process The aluminum industry mainly adopts cryolite-alumina molten salt electrolysis method, and its main equipment is an electrolytic cell. The simple principle of the electrolysis method is that a strong direct current is passed into the electrolytic cell, an electrochemical reaction takes place at the anode and the cathode, and an electrolytic product is produced. An anode generates carbon monoxide and carbon dioxide gas, and an aluminum liquid is formed on the cathode surface. In the structure of the electrolytic cell, the main structure connecting the cathode and the anode is an aluminum bus bar and a carbon body, and the aluminum bus bar is configured as a main body conductive body of the electrolytic cell. The electric energy required for electrolytic cell production comes from the power plant's power generation or online supply, and the powerful DC power also brings potential safety risks to production.
(II) Features of electrolytic cell installation All aluminum electrolytic cells are installed in series, and all electrolytic cells are connected in series by serial connection to form an integral circuit. This feature of the electrolytic cell also gives safe production belts. To safety hazards, this requires each cell to ensure stable and safe operation, to avoid leakage accidents, and to interrupt the current loop and affect the safe operation of the entire series.
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