System and method for controlling rare-earth oxide electrolysis furnace

Abstract

The invention relates to a system and method for controlling a rare-earth oxide electrolysis furnace. The system and the method are used for solving the problem that a product is unstable in quality and poor in consistency caused by the root cause that the existing production control is low in degree of automation and completely depends on the individual skill level and experience of staff. The system for controlling the rare-earth oxide electrolysis furnace comprises a DSP (Digital Signal Processor), an oxide feeding control system, a lithium salt feeding control system, a lithium salt weighing system, an oxide weighing system, a temperature control system, a voltage control system, a current control system, an HMI (Human Machine Interface) and a console. According to the system and the method, the best human control experience is changed into computer control, so that the conditions of the electrolysis furnace can be controlled to be in the best state, and the range of fluctuation is far lower than that of manual control; accurate, timely and stable fine control can be realized, and the stability of the product can be guaranteed.

Description

technical field [0001] The invention belongs to the technical field of rare earth metal electrolytic production of molten oxides, and relates to a control system and method for a rare earth oxide electrolytic furnace. Background technique [0002] It has been 30 years since the production of rare earth metals by oxide molten salt electrolysis. After years of development, its technology has made great progress. The electrolysis furnace has been developed to the fourth generation (commonly known as the water furnace), the electrolysis current has also increased from 1500A in the 1980s to the current 30000A, the carbon content of the product has also been reduced from 1500PPm to less than 100PPm, and the output of a single furnace has also increased by 3~4 times. It can be said that my country's current production technology of rare earth metals by oxide molten salt electrolysis is at the leading level in the world. Although the technology is very advanced, the degree of automa...

AI Technical Summary

Problems solved by technology

The electrolysis furnace has been developed to the fourth generation (commonly known as the water furnace), the electrolysis current has also increased from 1500A in the 1980s to the current 30000A, the carbon content of the product has also been reduced from 1500PPm to less than 100PPm, and the output of a single furnace has also increased by 3~4 times. It can be said that my country's current production of rare earth metals by oxide molten salt electrolysis technology is at the leading level in the world. Although the technology is very advanced, the degree of automation of production control is not high, and it depends entirely on the skills and experience of the individual employees. The Root Cause of Poor Stability Consistency

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