Patent · US Expired

Production of titania

US7485269B2 · kind B2 · utility

0Cited by

12References

23Claims

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	Feb 3, 2009
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, separating 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 characterized by multiple stage leaching of the titaniferous material.

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