Patent · US Expired

Process for reducing iron and vanadium in phosphoric acid solution

US4642224A · kind A · utility

1Cited by

8References

6Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Herbert Ressel · Lechenich, DE
Hans Haas
Johannes Krause · Kornwestheim, DE

Key dates

Filing date	Oct 1, 1985
Grant date	Feb 10, 1987
Priority date	—
Expiry date	Oct 1, 2005

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC01B25/18
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

Iron and vanadium is phosphoric acid solution are reduced. To this end, the phosphoric acid solution is contacted with ferrophosphorus which is used as the reductant.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.