Low-energy-consumption furnace building method of molten salt electrolytic furnace for praseodymium-neodymium alloy production

Abstract

The invention discloses a low-energy-consumption furnace building method of a molten salt electrolytic furnace for praseodymium-neodymium alloy production. The low-energy-consumption furnace building method comprises the following operation steps that 1, an outer steel groove with an opening in the top is prepared; 2, a mineral fiber net is laid at the bottom of an outer steel groove, a prepared inner steel groove is placed in the outer steel groove, and the space between the outer wall of the inner steel groove and the inner wall of the outer steel groove is filled with the mineral fiber net; 3, a mineral fiber net is laid at the bottom of an inner steel groove, a prepared graphite groove is placed in the inner steel groove, and the space between the outer wall of the graphite groove and the inner wall of the inner steel groove is filled with the mineral fiber net; 4, annular refractory brick plates are arranged at the tops of the outer steel groove, the inner steel groove and the graphite groove; and 5, an outer communication layer and an inner communication layer are vacuumized. According to the technical scheme, the problems that an existing molten salt electrolytic furnace for praseodymium-neodymium alloy production is insufficient in heat preservation performance and furnace building strength and poor in air tightness are solved.

Description

technical field [0001] The invention belongs to the technical field of praseodymium-neodymium alloy production equipment, and in particular relates to a method for building a molten salt electrolytic furnace with low energy consumption for the production of praseodymium-neodymium alloy. Background technique [0002] The electrolytic furnace is not only the key equipment for the electrolytic production of rare earth molten salt, but also the core technology of the rare earth molten salt electrolytic process. In recent years, the rare earth molten salt electrolysis process has developed by leaps and bounds: the electrolysis current ranges from 800A, 3000A, 6000 A to 10,000 A, the electrolysis current continues to increase, the output of a single furnace continues to increase, the unit power consumption continues to decrease, and the product quality continues to improve. The continuous progress of the electrolytic process is finally reflected in the improvement of the electroly...

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Problems solved by technology

[0008] The invention discloses a method for building a molten salt electrolytic furnace with low energy consumption for the production of praseodymium and neodymium alloys, in order to solve the problems of the existing molten salt electrolytic furnaces for the production of praseodymium and neodymium alloys in terms of thermal insulation performance, insufficient furnace strength and poor air tightness. A method for building a molten salt electrolytic furnace with low energy consumption for the production of praseodymium neodymium alloys, which can save energy, reduce pollution, and improve the service life of the molten salt electrolytic furnace for the production of praseodymium neodymium alloys

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