US Patent Issued to Jiangxi Zhongha New Material on July 14 for "Method for recovering hafnium and impurity metals from hafnium-containing waste residue" (Chinese Inventor)

ALEXANDRIA, Va., July 14 -- United States Patent no. 12,680,145, issued on July 14, was assigned to Jiangxi Zhongha New Material Co. Ltd. (Ganzhou, China).

"Method for recovering hafnium and impurity metals from hafnium-containing waste residue" was invented by Minglong Zhong (Shenzhen, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for recovering hafnium and impurity metals from a hafnium-containing waste residue, comprises dissolving the waste residue in sulfuric acid and ammonium sulfate to obtain an acidic solution, adjusting acidity of the acidic solution, and adding a complexing agent to obtain a material solution; conducting extraction to obtain a hafnium-loaded organic phase and an imp...