Sulfate process

US8728437B2 · kind B2 · utility

Assignee

• BHP Billiton Innovation Pty Ltd · AU

Inventors

• Alan David Stuart · Newcastle, AU
• John Andrew Lawson · Newcastle, AU
• Christopher Ward · Columbia, US
• Hong Peng · Kristiansand, NO

Key dates

• Filing date: Sep 29, 2009
• Grant date: May 20, 2014
• Expiry date: Apr 15, 2030

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C22B34/1259
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A sulfate process for producing titania from a titaniferous material (as herein defined) including a step of leaching said titaniferous material with a leachant to form a process solution that includes an acidic solution of titanyl sulfate and iron sulfate, wherein said sulfate process further includes a filtration step comprising filtering said leachant to at least substantially remove titanyl sulfate particles from said leachant prior to supplying said leachant to said leach step.