Fast voltage-reducing energy-saving starting method for aluminum electrolysis bath

Abstract

The invention discloses a method for quick starting, voltage reduction and energy conservation of an aluminum cell, comprising the following steps that: the molecule ratio is quickly reduced by maintenance of the electrolysis temperature in the aluminum cell on the basis of the prior art; the intermediate electrolysis temperature is maintained; the low-effect coefficient is matched so as to maintain the aluminum level and the electrolyte level at adequate height; operation of low alumina concentration in the cell is maintained; the operating voltage is quickly reduced; a hearthside of the electrolytic cell is quickly formed; and the new energy balance is established, which lays a foundation for quick reduction of the voltage. By adoption of the invention, compared with normal starting and final-period management, a single electrolytic cell directly reduces 12 volt voltage or so and directly saves 92200 degree electricity; moreover, when the electrical energy is saved, the influence of intermediate production management on equipment is declined; the service life of the electrolytic cell is indirectly improved and exhaust of dusty gases is reduced; the production operating cost is indirectly reduced and the aim of environmental control is achieved.

Description

Technical field: [0001] The invention relates to an energy-saving method, in particular to an energy-saving method for rapidly reducing voltage at start-up of an aluminum electrolytic cell. Background technique: [0002] Energy saving and consumption reduction is the theme advocated by our country. The aluminum electrolysis industry itself is a high energy-consuming production enterprise. How to reduce energy consumption is also the research object of every electrolytic aluminum industry. The post-start management of the aluminum electrolytic cell is a necessary process before the aluminum electrolytic cell is put into production. In this process, the traditional post-management process takes a long time, the voltage is high, the temperature of the electrolytic cell is high, the energy consumption is large, the volatile matter increases, and the impact on the environment increases. At the same time, it will cause great management difficulty for the later management of the el...

AI Technical Summary

Problems solved by technology

The post-start management of the aluminum electrolytic cell is a necessary process before the aluminum electrolytic cell is put into production. In this process, the traditional post-management process takes a long time, the voltage is high, the temperature of the electrolytic cell is high, the energy consumption is large, the volatile matter increases, and the impact on the environment increases. At the same time, it will cause great management difficulties to the later management of the electrolytic cell, and at the same time, poor management will have a profound impact on the normal production of the electrolytic cell, and will reduce the life of the electrolytic cell and increase the cost of the electrolytic cell