SOLVENT EXTRACTION SETTLER ARRANGEMENT

摘要

A solvent extraction settler arrangement comprising a mixing unit (1) for preparing a dispersion from mutually immiscible solutions and a settler (2) having a feed end (3) and a discharge end (4). The settler is arranged to separate solution phases from a dispersion fed from the feed end while the dispersion flows towards the discharge end. The arrangement further comprises a feeding device (5) located at the feed end (3) for feeding the dispersion prepared by the mixing unit (1) to the settler (2). The feeding device (5) comprises an elongated feed launder (6) having a first end (7) for receiving the dispersion from the mixing unit (1), and a second end (8). The feed launder (5) extends alongside the feed end (3) of the settler (2). The feed launder (5) has a form of a conical tube with a cross-section converging towards the second end (8) and an inclined bottom (9) ascending towards the second end (8). A plurality of feed pipes (10) are arranged along the length of the feed launder (6) at a distance from each other, each feed pipe (10) having a third end (11) opening to the inner space of the feed launder at the bottom (9) to receive the dispersion from the feed launder and a fourth end (12) opening to the settler (2) to conduct the dispersion to the settler.