C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
C22B 3/20 (2006.01) C22B 3/44 (2006.01)
Patent
CA 2744483
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.
L'invention porte sur un procédé pour la production d'une solution contenant des ions ferriques par l'oxydation contrôlée d'une solution contenant des ions ferreux, ledit procédé comprenant la fourniture d'une solution contenant au moins des ions ferreux; le traitement de la solution avec un ou plusieurs gaz d'alimentation contenant du dioxyde de soufre et de l'oxygène afin d'oxyder lesdits ions ferreux en ions ferriques, le débit d'introduction du dioxyde de soufre gazeux limitant la vitesse d'oxydation; et la régulation de la concentration en oxygène dissous dans ladite solution à une valeur optimale.
Bhp Billiton Olympic Dam Corporation Pty Ltd
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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