Outotec (Finland) Oy

Outotec Oyj

Michael H Barker

Henri K Virtanen

Ari Rantala

Duncan Grant

Lauri Nordlund

Olli Hyvärinen

Karri Osara

Sönke Schmachtel

Ville Nieminen

Provided is an electrode assembly for electrolytic processing in an electrolysis cell comprising an electrode blade comprising a metallic hanger bar portion, a first lug for supporting the metallic hanger bar portion on a first power supply bar, an insulating piece connecting the metallic hanger bar portion to the first lug. The electrode assembly also comprises an electrical switch unit controlling electrical current supply between the first lug and the metallic hanger bar based on a control signal transmitted to a terminal of the electrical switch unit, a control unit configured to transmit the control signal to the terminal of the electrical switch unit, and a power storage unit configured to supply power to the control unit, the power storage unit being charged from the first lug and the hanger bar when the electrical switch unit switches off electrical current supply between the first lug and the metallic hanger bar.

Apparatus for protection of anodes and cathodes in a system of electrolysis cells

The invention relates to a method for electrowinning a metal from an electrolyte in an electrowinning cell that comprises an electrolysis tank, one or more anodes, and one or more cathodes, which anodes and cathodes are housed in the electrolysis tank. The method comprises supplying sulfur dioxide to the anode to depolarize the anode process and to reduce the energy consumption of the electrowinning cell.

Method for metal electrowinning and an electrowinning cell

The invention relates to a method and current measuring arrangement for measuring electric current flowing in an individual electrode in an electrolysis system. The electrolysis system comprises a plurality of interleaved electrodes (), cathodes () and anodes (), arranged in an electrolysis cell () and immersed in electrolyte, said electrolysis system having a busbar () disposed on a separating cell wall () between each of the two adjacent cells to conduct electric current to the electrodes via a contact point () between the busbar and a hanger bar () of the electrode, and the current sensing arrangement comprises a magnetic field sensing means () for measuring the magnetic field induced by said current. The magnetic field sensing means () are arranged to sense the magnetic field substantially at the level of the contact point ().

Arrangement for measuring electric current in an individual electrode in an electrolysis system

The invention relates to a method and current measuring arrangement for measuring electric current flowing in an individual electrode in an electrolysis system. The electrolysis system comprises a plurality of interleaved electrodes (), cathodes () and anodes (), arranged in an electrolysis cell () and immersed in electrolyte, said electrolysis system having a busbar arrangement () disposed on a separating cell wall () between each of the two adjacent cells. The busbar arrangement comprises an equalizer busbar () to electrically connect anodes in one cell to cathodes in a next cell providing the current with multiple electrical pathways between electrodes, said electrical connection being formed by contact points () between the equalizer busbar () and hanger bars () of the electrodes. The electric current in the equalizer busbar () is measured by magnetic field sensing means () arranged at measuring points () located between each pair of the adjacently neighboring contact points ().

Measurement of electric current in an individual electrode in an electrolysis system

The invention relates to a method of forming an electrocatalytic surface on an electrode in a simple way, in particular on a lead anode used in the electrolytic recovery of metals. The catalytic coating is formed by a spraying method which does not essentially alter the characteristics of the coating powder during spraying. Transition metal oxides are used as the coating material. After the spray coating the electrode is ready for use without further treatment. The invention also relates to an electrode onto which an electrocatalytic surface is formed.

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Pori, Finland

Michael H Barker