Chemistry of inorganic compounds – Sulfur or compound thereof – Oxygen containing
Patent
1992-10-29
1996-02-06
Straub, Gary P.
Chemistry of inorganic compounds
Sulfur or compound thereof
Oxygen containing
423522, 423 83, 423DIG2, C01B 1769, C01B 1790
Patent
active
054894239
ABSTRACT:
In order to efficiently and easily recover a spent sulfuric acid exhasuted, for example, in an acid washing liquid or in producing titanium dioxide by a sulfate method in a large amount, as highly concentrated sulfuric acid, bivalent iron ions in the spent sulfuric acid containing metal sulfate are first oxidized into trivalent iron ions, hydrochloric acid is added to such a liquid and then solvent extraction is carried out.
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Iyatomi Nobuyoshi
Mikami Yasuie
Nittetsu Mining Co., Ltd.
Straub Gary P.
Vanoy Timothy C.
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