公开(公告)号：US09845241B2

公开(公告)日：2017-12-19

申请号：US14958854

申请日：2015-12-03

Applicant: OCI COMPANY LTD.

Inventor： Seung-Hyun Han ,  Wook Chang ,  Yeon-Hee Lee

IPC: C01B25/047

CPC classification number: C01B25/047

Abstract: The present invention relates to a method of purifying yellow phosphorus, and more particularly, to a method of effectively removing impurities from yellow phosphorus used as raw materials of a phosphoric acid to increase purity of the phosphoric acid, the method including: removing impurities from the phosphoric acid by adding an oxidizing agent to the yellow phosphorus, followed by stirring; and adding a solution including an additive having a specific functional group in a chemical structure to the yellow phosphorus from which the impurities are removed, followed by stirring.