Mobile graphite electrode electric heater

Abstract

The invention relates to a mobile graphite electrode electric heater which comprises a base, a heating box, an upper mounting fixture, an upper electrode connection copper bar, a lower electrode connection copper bar and a controller, wherein the upper mounting fixture is used for containing graphite electrodes, and the controller is used for controlling switching of a power source, current and voltage. Rollers are fixed to the lower end of the base. The heating box is fixed to the base. The upper mounting fixture comprises partition supporting plates, bent clips and clamping blocks. The at least one partition supporting plate is vertically fixed inside the heating box. The clamping blocks are hinged to the ends of long arms of the bent clips. The upper electrode connection copper bar is fixed to the middle of the upper end. The lower electrode connection copper bar is fixed to the bottom of the heating box and corresponds to the upper electrode connection copper bar. The input end ofthe controller is connected with an external power source. The output end of the controller is electrically connected with the upper electrode connection copper bar and the lower electrode connectioncopper bar. The mobile graphite electrode electric heater is reasonable in structure design and convenient to move, the heating process can be controlled automatically, in addition, the heating speedis high, and the production efficiency of electrolytic furnaces is improved by 8-15% on average.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an electric heater with a movable graphite electrode. Background technique [0002] Electrolytic furnaces, especially those used for the electrolysis of rare earth oxides to produce rare earth metals, consume graphite electrodes during the operation of the electrolytic furnace. When the consumption reaches a certain thickness, the old electrodes need to be removed and replaced with new anodes. During the replacement process, the electrode is replaced without stopping the furnace. Since the new anode is replaced at room temperature, the temperature of the entire furnace will drop by about 45°C. Taking the electrolytic production of praseodymium and neodymium rare earth metals as an example, the electrolytic process temperature is 1053°C + 30°C. The electrolytic process is the best. If the furnace temperature is lower than the lower limit of 1023°C before changing the graph...

AI Technical Summary

Problems solved by technology

[0002] Electrolytic furnaces, especially those used for the electrolysis of rare earth oxides to produce rare earth metals, consume graphite electrodes during the operation of the electrolytic furnace. When the consumption reaches a certain thickness, the old electrodes need to be removed and replaced with new anodes. During the replacement process, the electrode is replaced without stopping the furnace. Since the new anode is replaced at room temperature, the temperature of the entire furnace will drop by about 45°C.

Taking the electrolytic production of praseodymium and neodymium rare earth metals as an example, the electrolytic process temperature is 1053°C + 30°C. The electrolytic process is the best. If the furnace temperature is lower than the lower limit of 1023°C before changing the graphite electrode anode, the furnace temperature will drop to 978°C after replacing the graphite electrode anode. Around, lower than the normal electrolysis temperature, the condition of the electrolysis furnace is greatly affected, sometimes the electrolysis current cannot be added, the electrolysis reaction slows down, the heat released by the electrolysis reaction is less than the heat released by the electrolysis furnace to the outside, causing the furnace temperature to continue to drop, the furnace The condition deteriorates, the electrolyte thickens, and the electrolytic reaction stops

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