Hydrosulfite production

C - Chemistry – Metallurgy – 01 – B

Patent

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C01B 17/62 (2006.01)

Patent

CA 1103891

HYDROSULFITE PRODUCTION ABSTRACT OF THE DISCLOSURE An improved method for producing iron hydrosulfite liquor by reduction of sulfur dioxide with metallic iron is disclosed. Also disclosed are improvements in the conversion of the iron hydrosulfite liquor to produce sodium hydrosulfite bleach liquors.

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