Patent Number: 8,871,003

Title: Process for controlled oxidation of a ferrous solution

Abstract: A process for producing a ferric containing solution by the controlled oxidation of a ferrous containing solution, said process including providing a solution containing at least ferrous ions; treating the solution with one or more inlet gases containing sulfur dioxide and oxygen in order to oxidize said ferrous ions to ferric ions, wherein the delivery rate of the sulfur dioxide gas is oxidation rate limiting; and controlling the concentration of dissolved oxygen in said solution at an optimum value.

Inventors: Rorke; Gary Vernon (Brighton, AU)

Assignee: BHP Billiton Olympic Dam Corporation Pty Ltd.

International Classification: C22B 3/04 (20060101); C22B 5/00 (20060101)

Expiration Date: 2018-10-28 0:00:00