Cantor Colburn LLP
Method of inhibiting degradation of extractant by anhydrous environment avoiding and metal stripping
Provided is a method of inhibiting degradation of an extractant by an anhydrous environment avoiding and metal stripping, the method including the steps of: (a) stopping the addition of soda ash (Na2CO3) to an extracting reaction tank; (b) starting solution recirculation and stopping solvent recirculation of a settler; (c) supplying a solvent from a loaded organic tank to a scrubbing reaction tank, in which the scrubbing reaction tank, stripping reaction tank and extracting reaction tank are connected for circulation and operating stirrers of the scrubbing reaction tank, stripping reaction tank and extracting reaction tank; (d) supplying a sulfuric acid solution having a controlled concentration with a diluting solution to the stripping reaction tank; (e) transferring the solvents of the settler, the loaded organic tank and all the pipes to the scrubbing reaction tank; and (f) stopping the step (e) and initiating solvent recirculation.
KOREA RESOURCES CORPORATION
C B C C C Y B B C C B
C22B B01D C22B C22B C22B Y02P B01D B01D C22B C22B B01D
inventional inventional inventional inventional inventional additional inventional inventional inventional inventional inventional
Jeon Woong Seung Ho Kyung Bae Youn Kyu
An Lee Jung Yi