In the process of producing rare earth metals by molten salt electrolysis, enterprises hope to further reduce energy consumption while improving the quality and consistency of the finished products. Process requirements: Uniform and precise feeding process; Reduce reliance on workers' operational experience; Material consumption is traceable. Improve the production environment; Digitalization of production management We adopt a loss-in-weight screw feeding scale developed based on the Siemens weighing technology platform. In terms of mechanical structure, weighing method and feeding system design, we fully consider the demands of the rare earth metal electrolytic smelting industry, ensuring that materials can be reliably and evenly added in accordance with process requirements.