Most rare earth elements (REEs) are critical materials of extreme prominence. Because of their criticality, their convalescence into metal from rare earth oxide (REO) and their recycling from end-of-life materials are essential for the proficient use and safeguard of natural resources. With pyrometallurgical approaches using potential versus partial oxidation pressure (E-pO^2-) diagrams, the conditions for making neodymium are established by which REOs are dissolved in a molten halide bath to form pure Nd metal in the electrolysis process. This paper also expands on how the diagrams are used and verified through design of experiment studies, which result in statistical rejoin models based on molten salt electrolysis for extracting neodymium from its oxide in a fluoride bath.

大多数稀土元素（REE）是极为突出的关键材料。由于它们的重要性，它们对于从稀土氧化物（REO）还原成金属以及从报废材料中回收的利用对于有效利用和保护自然资源至关重要。通过使用位势对部分氧化压力（E-pO ^2-）图的火法冶金方法，建立了制备钕的条件，通过该条件，将REO溶解在熔融卤化物浴中，从而在电解过程中形成纯Nd金属。本文还通过设计实验研究扩展了这些图的使用方式和验证方式，从而得出了基于熔融盐电解的统计再结合模型，用于从氟化物浴中的氧化物中提取钕。