Process for removing sulfate ions from extracted phosphoric acid
申请人:Toyo Soda Manufacturing Co., Ltd
公开号:US04041134A1
公开(公告)日:1977-08-09
A process for removing sulfate ions from extracted phosphoric acid which is substantially free of metallic ion contaminants, which comprises adding less than the stoichiometric equivalent of a barium compound relative to the amount of dissolved sulfate ion to said extracted phosphoric acid to form barium sulfate crystals, adding active carbon to the resulting slurry, separating the solid components from the slurry and recovering purified phosphoric acid.