WeiBeam Technical Team Visits Rare Earth Smelters for Electrode Technology Exchange

In the transition from spring to summer 2026, the company organized a technical team to visit several rare earth smelting enterprises over a period of weeks. Rare earth molten salt electrolysis is an important application for molybdenum electrodes, and the behavior of electrodes in fluoride molten salt at high current density can only be improved continuously by combining it with frontline cell data. The goal of these visits was to align laboratory parameters with actual operating conditions and find a basis for optimizing electrode configuration.

Three topics of the exchange

• Electrode wear patterns: comparing end-face and sidewall wear rates at different current densities and melt temperatures, and identifying links between abnormal wear and operating practices;
• Current efficiency impact: discussing how electrode arrangement and pole pitch affect current distribution in the melt, and analyzing their influence on per-cell output and power consumption;
• Coordinated cell condition maintenance: exchanging views on how electrode replacement dovetails with tapping and slag removal operations, reducing disturbance to the electrolysis regime during replacement.

Insights from on-site observation

During the visits, the technical team noticed several recurring issues: misalignment in electrode installation on some cells concentrated current locally and accelerated one-sided wear; at a few plants, cooling water temperature varied considerably with the seasons, and end overheating risk rose markedly in summer; others relied entirely on experience to judge when to change electrodes, with no data support. These observations were recorded and numbered one by one, then reviewed after returning to the plant together with the R&D and service departments and turned into improvement items.

From exchange to solution

For the issues collected, the company subsequently completed three actions: revising the installation briefing document for rare earth electrolysis electrodes to add alignment checks and current distribution confirmation steps; providing more suitable size and electrode-count configuration recommendations for high-current-density cell types; and setting up operating data files for customer electrodes, using trend analysis to support judgment of replacement timing. Ongoing exchange with customers keeps molybdenum electrode improvements close to real operating conditions.

Continued focus on the industry

The rare earth industry is advancing green smelting and intelligent upgrading, and larger, more stable electrolysis cells place higher demands on electrodes. WeiBeam.com regards rare earth electrolysis as an application area requiring long-term commitment, plans to make technical visits an annual fixture, and will keep tracking changes in molten salt electrolysis conditions to serve this niche market with electrode solutions that understand the shop floor. The company will also set up an operating data feedback mechanism with pilot enterprises, continuously recording electrode wear and power consumption curves under different electrolysis regimes, using electrode life data to support long-cycle cell operation, and feeding improvements back into electrode dimensions and end structures. Deepening a market often starts with understanding one cell.