Ultra-pure gadolinium oxide and electrochemical reduction fully-closed type extracting production process thereof

Abstract

The invention discloses a full extracting process for preparing ultra-pure gadolinium oxide and a product thereof. Compared with the traditional ion exchange and chromatography extraction method, the process has the characteristics of large yield and low cost. The primary-pure gadolinium oxide (Gd2O3 at the grade of 99.99 percent) is obtained in advance by adopting a rough gadolinium enriching substance (Gd3O3 at the grade of 10-90 percent) as a raw material and adopting a mixed extracting agent of P507 and P204 through optimized control of factors, such as material liquid concentration, grade, phase ratio, acidity, and the like and classical extraction and separation in two steps; then the electrochemical reduction and the fully-closed type extraction and separation are performed for carrying out deep purification, and trace rare-earth element impurities are removed; and finally, the ultra-pure gadolinium oxide product with the rare-earth impurity content below 0.5ppm is obtained.

Description

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AI Technical Summary

Benefits of technology

This patented technology uses an electrical reducing technique called Elecro Chemical Reduced Process or ECR processes to clean up tiny amounts of rare metals like Eu2O3 during manufacturing. It does this through elecrolysis instead of traditional methods involving expensive reagents. By removing these contaminants, the resulting pure rare earth products have lower levels compared to older techniques while still maintain their quality.

Problems solved by technology

This patented technical problem addressed in this patents relates to finding a more efficient way to produce highly pure or near-ultraviolet lightweight ceramics called lutetolithia that meets specific applications like laser technology.

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