SEPARATION METHOD OF HIGH PURITY ZIRCONIUM USING COLUMN EXTRACTOR

摘要

PURPOSE: A separation method of high purity zirconium using a column extractor is provided in which high purity zirconium is continuously separated and extracted economically and environment friendly from a zirconium oxychloride (ZrOCl2·8H2O) aqueous solution containing hafnium using the column extractor. CONSTITUTION: The separation method of high purity zirconium using a column extractor comprises first extracting step of extracting zirconium by containing zirconium in an organic solution(2) containing tributyl phosphate (TBP) as a zirconium extractant from the upper part of a first column extractor(10) using difference of specific gravity after repeating mixing and separation of the aqueous solution and the organic solution(2) by supplying a hafnium contained zirconium oxychloride aqueous solution(1) and an organic solution containing tributyl phosphate (TBP) as an extractant to upper and lower parts of the first column extractor(10) respectively; and second extracting step of reverse extracting zirconium by containing zirconium in water from the lower part of the second column extractor using difference of specific gravity after repeating mixing and separation of the organic solution(2) and water by supplying the organic solution(9) extracted in the first extracting step and water to lower and upper parts of a second column extractor respectively.