Patent · US Expired

Method of treating nickel-containing and vanadium-containing residues

US4737187A · kind A · utility

3Cited by

0References

9Claims

0Family size

Assignee

GfE Gesellschaft fur Elektrometallurgie mbH · DE

Inventors

Reinhard Hahn · Vilsheim, DE
Hans Karl Hess · Arlington, US
Siegfried Sattelberger · Nuremberg, DE

Key dates

Filing date	Oct 17, 1986
Grant date	Apr 12, 1988
Priority date	—
Expiry date	Oct 17, 2006

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P10/20
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

Nickel- and vanadium-containing catalysts or combustion residues from petroleum treatment are combined with alkali metal carbonates and/or chlorides and the resulting mixture is melted in the presence of a sulfur carrier with or without carbon which serves to reduce the sulfur to a sulfidic form, a high vanadium, low nickel slag segregating from a high nickel, low vanadium matte. The matte and slag can be separately tapped and the matte is treated metallurgically to recover nickel while the slag is leached and is thus treated hydrochemically to recover valuable vanadium compounds.

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