Patent · US Expired

Production of titania

US7429364B2 · kind B2 · utility

0Cited by

12References

19Claims

0Family size

Assignee

BHP Billiton Innovation Pty Ltd · AU

Inventors

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

Key dates

Filing date	Oct 17, 2003
Grant date	Sep 30, 2008
Priority date	—
Expiry date	Oct 17, 2023

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 is disclosed. The process includes leaching the titaniferous material and producing a leach liquor, precipitating iron sulfate from the leach liquor, solvent extraction of titanyl sulfate from leach liquor, hydrolysis of the extracted titanyl sulfate, and thereafter calcining the solid phase produced in the hydrolysis step. The process is characterised by using at least part of the raffinate from the solvent extraction step as at least part of the leach solution in the initial leach step.

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