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AssigneeOutotec Oyj
InventorsBror Nyman, Stig-Erik Hultholm, Eero Ekman, Launo Lilja, Juhani Lyyra, Pertti Pekkala, Raimo Kuusisto
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The invention relates to a method for guiding a dispersion of two liquids formed in the mixing stage of liquid-liquid extraction along the longitudinal axis of the separation section in the feed end of an extraction separation section. In particular the method and equipment relate to the extraction process used in the recovery of metals. In accordance with the method the dispersion to be fed into the separation section is guided so that it spreads evenly over the cross-section of the separation section using a directional member placed so as to obtain a vertical flow. The equipment in accordance with the invention consists of a directional member, which is in turn made up of at least two separate parts.
A method to guide a dispersion formed of an aqueous solution and an organic solution evenly over the cross-section of a separation section in connection with the recovery of metals in the separation section of a liquid-liquid extraction process, comprising equipping a feed end of the extraction separation section with a directional member extending from one sidewall to the other, and comprising at least two plate-like parts, routing the dispersion fed from the extraction mixing section into the centre of the feed end of the separation section first via the bottom part of the separation section under the first directional plate of the directional member, after causing the dispersion to flow into an essentially vertical upwards direction in a directional channel formed between the directional plates, and causing the dispersion to flow over the last directional plate into the separation section in order to separate into its own phases.
Equipment for guiding a dispersion formed of an aqueous solution and an organic solution evenly over the cross-section of a separation section in connection with the recovery of metals in a liquid-liquid extraction settler, which comprises a feed end, sidewalls, rear end (17), and bottom, the equipment comprising a directional member in the feed end of the settler and extending from one sidewall to the other, having at least two directional plates situated at different heights, outer edges of which extend to the sidewalls of the settler and a central part further than the outer edges when seen in the direction of flow in the settler.
Equipment for guiding a dispersion formed of an aqueous solution and an organic solution evenly over the cross-section of a separation section and the controlled separation of the dispersion into its own phases in connection with the recovery of metals in a liquid-liquid extraction settler, which comprises a feed end, sidewalls, rear end, and bottom, the equipment comprising a directional member in the feed end of the settler and extending from one sidewall to the other, having at least two directional plates situated at different heights, the outer edges of which extend to the sidewalls of the settler and a central part further than the outer edges when seen in the direction of flow in the settler, the settler being equipped with at least one revert member, located from one sidewall to the other and crosswise to the longitudinal axis of the settler, the revert member having at least two revert plates located at different heights.
Dependencies are inferred from the claim text.