Outotec (finland) Oy

Outotec Oyj

Neste Corporation

Metso Outotec Finland Oy

Rami Saario

Henri Fredriksson

Jussi Vaarno

Bror G Nyman

Eero Ekman

Pertti Pekkala

Hannu Laitala

Jussi Pajala

Erkki Paatero

Virpi Rämö

Maija Rouhiainen

Jukka Kortelainen

Juri Matinheikki

Hanna VUORTENVÄLI

Manu Vesanen

Virpi Ramo

Hanna Vuortenvali

The present disclosure relates to hydrometallurgical technologies wherein liquid-liquid extraction, also called solvent extraction, is used to separate and concentrate metal ions. Exemplary embodiments relate to solvent extraction of copper and a diluent useful in copper solvent extraction. A bio-based composition can fulfil physico-chemical properties that are desired for solvent extraction. Moreover, a composition is disclosed, which in addition to providing more environmental friendly alternative, can also improve the solvent extraction process of copper.

Renewable isoparaffins as diluent in hydrometallurgical liquid-liquid extraction process

A method of manufacturing a launder to be used in co-operation with a solvent extraction settler comprises manufacturing at the site of manufacture, such as in an engineering workshop, a plurality of self-supporting launder element modules, each having exterior dimensions, strength and handling and securing means conforming to shipping container standards, transporting the launder element modules to the site of installation as normal freight by transport equipment, such as trucks, trailers and container ships, capable of handling and transporting shipping container standard compatible units, and assembling at the site of installation the launder element modules into a module group forming a complete launder. The launder comprises a launder module group consisting of self-supporting launder element modules, each having exterior dimensions, strength and handling and securing means conforming to shipping container standards to enable shipping container standard compatible transportability.

Method of manufacturing a launder and launder

A method of manufacturing a solvent extraction settler comprises manufacturing at the site of manufacture, such as in an engineering workshop, a plurality of self-supporting settler element modules () each having exterior dimensions, strength and handling and securing means () conforming to shipping container standards, transporting the modules () to the site of installation as normal freight by transport equipment, such as trucks, trailers and container ships, capable of handling and transporting shipping container standard compatible units, and assembling the modules () into a complete settler at the site of installation. The settler comprises a module group () consisting of a plurality of self-supporting settler element modules () each having exterior dimensions, strength and handling and securing means () conforming to ISO shipping container standards to enable ISO compatible transportability.

Method of manufacturing a solvent extraction settler and solvent extraction settler

In a solvent extraction settler arrangement the outlet box comprises an inner tube arranged vertically inside a shaft, the inner tube being spaced from the side wall of the shaft to define an intermediate space between the inner tube and the shaft. The inner tube has an inner space and an opening at the lower part of the inner tube adjacent the bottom to form a flow path for the heavy solution phase to flow to the inner space. The shaft comprises a second outlet which is separate in relation to the discharge outlet and above the level of the discharge outlet. The second outlet opens through the side wall to the intermediate space at a location adjacent to the upper end of the shaft and at the level of said layer of entrained light solution phase for discharging said layer of entrained light solution phase from the intermediate space.

Solvent extraction settler arrangement

A solvent extraction settler arrangement comprising a mixing unit for preparing a dispersion from mutually immiscible solutions and a settler having a feed end and a discharge end. 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 located at the feed end for feeding the dispersion prepared by the mixing unit to the settler. The feeding device comprises an elongated feed launder having a first end for receiving the dispersion from the mixing unit, and a second end. The feed launder extends alongside the feed end of the settler. The feed launder has a form of a conical tube with a cross-section converging towards the second end and an inclined bottom ascending towards the second end. A plurality of feed pipes are arranged along the length of the feed launder at a distance from each other, each feed pipe having a third end opening to the inner space of the feed launder at the bottom to receive the dispersion from the feed launder and a fourth end opening to the settler to conduct the dispersion to the settler.

In a method for fabricating a separation fence () to be used in a hydrometallurgical liquid-liquid solvent extraction settler, the fence is manufactured of polymer resin. The fence () is manufactured as a shell-like integral piece by rotational molding. The fence () is a rotationally molded shell-like integral piece.

Method of manufacturing a separation fence and separation fence

A solvent extraction settler arrangement comprises a settler () having a feed end () and a discharge end (), said settler being arranged to separate solution phases from a dispersion fed from the feed end while the dispersion flows to the discharge end. Elongated discharge launders () are arranged at the discharge end () of the settler for each solution phase to be separated from the dispersion, each discharge launder () including a first end (), an outlet () arranged at the first end, and a closed second end (). At least one of the discharge launders () has a form of a conical tube with a cross-section converging from the first end () towards the second end () and an inclined bottom () descending from the second end () towards the first end ().

A solvent extraction method for hydrometallurgical liquid-liquid extraction processes, in which method solution phases are separated from a dispersion while the dispersion flows horizontally in a settler from a feed end to a discharge end. The mass flow of the dispersion and solution phases is divided into a plurality of parallel and mutually separated plug flows flowing in the settler from the feed end to the discharge end. The settler () comprises a plurality of elongated settler sections () which are mutually separated and side by side in parallel to each other, Inc settler sections () extending from the feed end () to the discharge end (), forming a plurality of mutually separated parallel plug flow channels.

Solvent extraction method and solvent extraction settler

A method and arrangement for separating two solutions mixed in dispersion into two solution phases in a liquid-liquid extraction separation cell. A lighter solution phase placed on the heavier solution phase is forced to flow as a thin overflow layer over the top edge of a front panel such that the dispersion thickens A rear panel is essentially parallel with the front panel so that in between the front panel and the rear panel, there is formed an uptake shaft along which the thickened dispersion can rise and be compressed.

Method and arrangement for separating two solutions mixed in dispersion into two solution phases in a liquid-liquid extraction separation cell

The invention relates to a method and arrangement for separating two solutions mixed in dispersion into two solution phases in a liquid-liquid extraction separation cell. The arrangement includes a first guide wall extending along the whole width of the cell with respect to the vertical direction at an inclined angle. The first guide wall includes a bottom edge, which is located at a distance from the cell bottom, so that a clearance gap is formed between the bottom edge and the cell bottom. The arrangement also includes a second guide wall essentially parallel with the first guide wall and placed at a distance therefrom. Between the first guide wall and the second guide wall an uptake shaft is formed extending diagonally upwards at the inclined angle. The second guide wall is pressed tightly against the cell bottom, and includes a number of vertical slots.

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Espoo, Finland

Rami Saario