Method for recovering precious metal
AssigneeOutotec (Finland) Oy
InventorsKaj Jansson, Mikko Ruonala, Tuukka Kotiranta
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Abstract
A method for recovering at least one precious metal from an aqueous solution containing the metal and particularly to recovery of silver and optionally one or more other precious metals from overflow of a sedimentation unit such as a thickener, a clarifier or a pond includes subjecting the aqueous solution to a micro and/or nanobubble flotation, wherein the pH of the aqueous solution is at most 1.5.
Claims13
A method of recovering at least one precious metal from an aqueous solution containing said metal, which comprises subjecting said aqueous solution to a micro- and/or a nanobubble flotation, wherein the pH of the aqueous solution is at most 1.5 and at least a portion of the flotation bubbles have a size of less than 100 μm.
Dependencies are inferred from the claim text.