Patent · US Active

Sulfate process

US8021634B2 · kind B2 · utility

4Cited by

5References

13Claims

0Family size

Assignee

BHP Billiton Innovation Pty Ltd · AU

Inventors

Eric Roche · Newcastle, AU
Philip Ernest Grazier · Newcastle, AU
Alan David Stuart · Newcastle, AU

Key dates

Filing date	Sep 6, 2007
Grant date	Sep 20, 2011
Priority date	—
Expiry date	Sep 21, 2027

Classification

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

Abstract

A sulfate process for producing titania from a titaniferous material (such as an iron-containing titaniferous material such as ilmenite) is disclosed. The process includes digestion and/or leach steps that form a process solution that includes an acidic solution of titanyl sulfate (TiOSO4) and iron sulfate (FeSO4) from the solid titaniferous material. The process also includes hydrolysis and other steps that form titania from the titanyl sulfate in the process solution. The process is characterised by a ferric ion treatment step of treating the process solution and lowering the concentration of ferric ions from the process solution.

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