Preparation method of rare-earth neodymium electrolysis ceramic crucible

Abstract

The invention discloses a preparation method of a rare-earth neodymium electrolysis ceramic crucible, which comprises the following steps: mixing a raw material composition, putting the mixture into a glass container, and precipitating to prepare a green blank; presintering the green blank to obtain a dry blank; putting the dry blank into a grinder, and grinding into powder; putting the powder into a forming machine, and carrying out compaction forming to obtain a crucible semifinished product; and sintering the crucible semifinished product to obtain a finished product crucible. The raw material composition comprises neodymium oxide, cerium oxide, copper oxide and a deionized water solution, wherein chitosan cellulose is added into the solution. The crucible prepared by the method has favorable corrosion resistance at high temperature, and has high thermal shock resistance; the quality of the product can not be influenced in the material consumption process; and the method can easily implement industrialization.

Description

technical field [0001] The invention relates to the preparation of a crucible, in particular to a method for preparing a rare earth neodymium electrolytic ceramic crucible. Background technique [0002] With the advancement of science and technology, the application of rare earth metals in new materials, electronics, and new ceramics is becoming more and more extensive. At the same time, the requirements for rare earth metal materials are also getting higher and higher. [0003] Molten salt electrolysis is the most important method in the smelting of rare earth materials in my country. Most neodymium is prepared by fluoride salt electrolysis, but it is easy to oxidize and corrode under high temperature electrolysis, which has brought adverse effects on rare earth production, such as increasing the cost of rare earth production , which reduces the quality of rare earth metals and affects the normal operation of electrolytic production. The above various production defects reve...

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Problems solved by technology

[0003] Molten salt electrolysis is the most important method in the smelting of rare earth materials in my country. Most neodymium is prepared by fluoride salt electrolysis, but it is easy to oxidize and corrode under high temperature electrolysis, which has brought adverse effects on rare earth production, such as increasing the cost of rare earth production , which reduces the quality of rare earth metals and affects the normal operation of electrolytic production. The above production defects reveal the problems existing in the production of rare earth elements in my country