| 摘要 |
A method for separating a first liquid from a mixture with a second liquid or particulate solid by a series of froth flotation and froth separation stages (2,5,15 and 18) including at least a first (2) and a last stage (18) in which a first recycle portion (23) is recovered from the last stage (18) and recycled thereto is improved by separately recovering a second recycle portion (8) from a stage upstream with respect to last stage and recycling the second recycle portion to the first stage (2) and, optionally, to the stage from which it is recovered (5) and any stages intermediate the first stage the stage from which it is recovered. |
