Patents Assigned to OUTOTEC (FILTERS) OY
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Publication number: 20160002802Abstract: 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 (1, 2), cathodes (1) and anodes (2), arranged in an electrolysis cell (3) and immersed in electrolyte, said electrolysis system having a busbar arrangement (4) disposed on a separating cell wall (5) between each of the two adjacent cells. The busbar arrangement comprises an equaliser busbar (6, 7, 8, 9, 10, 11) 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 (12) between the equaliser busbar (6, 7, 8, 9, 10, 11) and hanger bars (13) of the electrodes.Type: ApplicationFiled: February 27, 2014Publication date: January 7, 2016Applicant: OUTOTEC (FINLAND) OYInventors: Duncan GRANT, Michael H. BARKER, Lauri NORDLUND, Ari RANTALA, Henri K. VIRTANEN
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Patent number: 9228783Abstract: A method for controlling a fuel supply to a plurality of burners of a burner group includes determining a temperature in the burner group as a control variable. The fuel supply to the burners of the burner group is specified in dependence on a control deviation of the temperature determined in the burner group to a specified setpoint temperature. The fuel supply is a common mean fuel supply that is specified for all of the burners of the burner group by a temperature master controller. The fuel supply is corrected for each of the burners or burner subgroups of the burner group. Each of the burners or the burner subgroups have a fuel supply slave controller. The fuel supply slave controllers use at least, one disturbance variable associated to the respective burner or the respective burner subgroup so as to perform the correcting.Type: GrantFiled: February 14, 2013Date of Patent: January 5, 2016Assignee: OUTOTEC (FINLAND) OYInventors: Karl Semiller, Wolfgang Selt, Michael Stroeder
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Patent number: 9227845Abstract: A packed tower for the absorption of water or SO3 in sulfuric acid includes a jacket and a domed grid disposed within the jacket. The domed grid is held on an L-shaped ring such that a gap is formed between an outside diameter of the domed grid and the jacket. A bed of packings is held on the domed grid through which the sulfuric acid charged from above trickles. A gas supply tube is disposed in a lower region of the tower. A gas outlet is disposed above the bed. An acid outlet is disposed in the lower region of the tower.Type: GrantFiled: August 30, 2012Date of Patent: January 5, 2016Assignee: OUTOTEC OYJInventors: Karl-Heinz Daum, Wolfram Schalk
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Publication number: 20150375235Abstract: The invention relates to a method of controlling a grinding mill process in a grinding circuit, which said grinding circuit comprises at least a grinding mill (6) having a shaft (4) in a grinding chamber (2), said grinding circuit (G) further comprises a cyclone (11) for receiving circuit feed material and for feeding said circuit feed material further in the grinding circuit (G), and monitoring devices. The grinding mill process comprises at least following steps: pumping circuit feed material from a feed tank to the cyclone (11) upstream of the mill, and pumping the circuit feed material forming slurry into the grinding mill (6) for grinding the slurry into finer particles.Type: ApplicationFiled: February 26, 2014Publication date: December 31, 2015Applicant: Outotec (Finland) OyInventors: Ilkka ROITTO, Harri LEHTO
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Patent number: 9221062Abstract: A process for dedusting a dust laden vapor gas mixture (VGM) obtained by pyrolysis of a material containing hydrocarbons includes treating the dust laden VGM in a dry electrostatic precipitator at a temperature in a range from 380 to 480° C. so as to separate dust from the VGM. Then, the VGM is cooled to a temperature in a range from 310 to 360° C.Type: GrantFiled: October 10, 2012Date of Patent: December 29, 2015Assignee: ENEFIT OUTOTEC TECHNOLOGY OÜInventors: Hermann Sieger, Christian Binder, Nikola Anastasijevic, Andreas Orth
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Publication number: 20150367309Abstract: The present invention relates to a method and an arrangement for pressure and temperature let down of autoclave discharge slurry, in particular in pressure oxidation or high pressure acid leach of metal containing ore. The method of the invention comprises a step of precooling the autoclave discharge slurry by contacting the autoclave discharge slurry with a cooling fluid for reducing the temperature of the autoclave discharge slurry prior to its entry into the first flash stage. The invention further relates to an autoclave (1) and pressure let-down arrangement adapted for providing cooling fluid to the autoclave discharge slurry prior its entry into the first flash vessel (2).Type: ApplicationFiled: February 7, 2014Publication date: December 24, 2015Applicant: Outotec (Finland) OyInventor: John O'CALLAGHAN
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Publication number: 20150360149Abstract: A method for air drying a filter cake contained in a filter chamber defined by a first filter plate, which comprises an air inlet for supplying drying air into the filter chamber to expel fluids from the filter cake, and a second filter plate, which comprises a fluid outlet for discharging fluids from the filter chamber. The method comprises throttling the air flow into the filter chamber by means of an orifice plate that acts as a flow resistance connected in series with the flow resistance of the filter chamber. Preferably the orifice of the orifice plate is so sized that, in case the flow resistance of the filter chamber falls below a normal level, choked flow is achieved in the orifice.Type: ApplicationFiled: February 18, 2014Publication date: December 17, 2015Applicant: OUTOTEC (FINLAND) OYInventor: Teppo SUUTARI
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Publication number: 20150352504Abstract: The invention relates to a stirred tank reactor for gas-liquid mass transfer in a slurry. The reactor includes a reactor tank (1) having a first volume (V1), a drive shaft (2) that extends vertically in the reactor tank, a motor (3) for rotating the drive shaft (2), a main impeller (4) which is a downward pumping axial flow impeller attached to the drive shaft (2) to create a main flow pattern in the reactor tank, and a gas inlet (5) arranged to supply gas into the reactor tank (1) to be dispersed to the liquid.Type: ApplicationFiled: January 29, 2014Publication date: December 10, 2015Applicant: OUTOTEC (FINLAND) OYInventors: Marko LATVA-KOKKO, Teemu RITASALO, Jussi VAARNO
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Publication number: 20150343347Abstract: A connector (19) for a filter plate comprises an elbow fitting (20) connectable onto a first plane surface of a filter plate, a counterpart connectable onto a second plane surface of the filter plate, and a bolt (22) for fastening the elbow fitting (20) to the counterpart (21). The elbow fitting (20) comprises an inlet (24) connectable to an internal cavity of the filter plate and an outlet (25) connectable to a drainage line of a disc filter so that the elbow fitting (20) is able to act as a fluid communication channel between the internal cavity and the drainage line.Type: ApplicationFiled: January 9, 2014Publication date: December 3, 2015Applicant: Outotec (Finland) OyInventor: Rolf HINDSTRÖM
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Publication number: 20150345556Abstract: The present invention provides improvements to a fluid bearing (11, 12) for a journal (4), one being a polymer bearing pad (17) comprising an outer surface (13), at least one recess (18) for receiving lubricating fluid from a base (14) of said fluid bearing and distributing said lubricating fluid to said outer surface and a mounting means (8, 18A) for securely mounting said polymer bearing pad to said base. Other improvements include a fluid bearing (11, 12) comprising the polymer bearing pad (17), methods of making the polymer bearing pad and fluid bearing, a fluid bearing comprising a polymer bearing pad (17) having a chamfer (37) and a multidirectional fluid bearing (70).Type: ApplicationFiled: June 28, 2013Publication date: December 3, 2015Applicant: Outotec (Finland) OyInventors: Daniel BRAITHWAITE, Jeffrey Victor BELKE, Nicholas John GREEN, Chris TATE, Oscar HARRISON, Knut VAAGE
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Patent number: 9200345Abstract: A process and a plant for treating ore concentrate particles containing valuable metal and having at least arsenic and sulfur containing components. The process comprises a two-stage roasting process comprising a first roasting step and a second roasting step. A gas mixture is formed from the first process gas component obtained from the first roasting step and from the second process gas component obtained from the second roasting step. Post combustion of the gas mixture is made in a post combustion chamber that uses the sulphide rich first process gas component and the second process gas component as oxidizer gas in order to decompose SO3 in the gas mixture. The exit gas is exposed to subsequent gas cooling and dust removal steps.Type: GrantFiled: December 14, 2010Date of Patent: December 1, 2015Assignee: Outotec OyjInventors: Åke Holmström, Karin Lundholm, Gunnar Berg, Jochen Güntner
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Method and apparatus for preparing a mother plate of a permanent cathode for an electrolytic process
Patent number: 9194051Abstract: The invention relates to a method and an apparatus for preparing a mother plate of a permanent cathode to be used in a process for electrolytic recovery of metal such as metal electrorefining or metal electrowinning. The apparatus comprises a holder for releasably holding the permanent cathode, a measurer for measuring a shape of the mother plate to obtain measurement data, a calculating device functionally connected with the measurer and configured for calculating geometric deviation of the mother plate in comparison to a predefined reference shape by using the measurement data, and a presser functionally connected with the calculating device and configured for automatically locally pressing the mother plate in accordance with the calculated geometric deviation of the mother plate to plastically deform the mother plate.Type: GrantFiled: June 30, 2010Date of Patent: November 24, 2015Assignee: OUTOTEC OYJInventors: Henrik Andrén, Martin Arpi -
Publication number: 20150329933Abstract: The present invention relates to a method and an arrangement for pressure and temperature let down of autoclave discharge slurry (106), in particular in pressure oxidation or high pressure acid leach of metal containing ore. The method of the invention comprises a step of providing autoclave vent gas (105) obtained from the autoclave (1) to the top-entry flash vessel (2) for inducing overpressure to the said top-entry flash vessel and preventing boiling of the slurry during the transfer to next top-entry flash vessel (3). The invention further relates to an autoclave and pressure let-down arrangement adapted for providing autoclave vent gas to one or more top-entry flash vessels.Type: ApplicationFiled: December 30, 2013Publication date: November 19, 2015Applicant: Outotec (Finland) OyInventor: John O'CALLAGHAN
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Publication number: 20150330934Abstract: The invention relates to a method and an apparatus for monitoring the quality of an ore delivered to flotation concentration and the state of a slurry prepared from said ore. In the method, two or more working electrodes (6, 7, 8) featuring a cross sensitivity are immersed in the slurry to be monitored and the differences of potentials between each pair of electrodes is measured, whereby no reference electrodes are needed. The working electrodes (6, 7, 8) may comprise an argentite electrode, a platinum electrode and a molybdenum electrode, in which case the following differences of potentials between electrodes are being measured: ?(Ag—Pt), ?(Ag—Mo) and ?(Pt—Mo).Type: ApplicationFiled: December 28, 2012Publication date: November 19, 2015Applicant: Outotec (Finland) OyInventors: Gennady Nikolaevich MASHEVSKIY, Aleksandr Vladimirovich PETROV, Sergei Aleksandrovich ROMANENKO, Matti KLEMETTI, Mika ETELAPAA
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Patent number: 9182264Abstract: The present invention describes a method, apparatus and computer program for detecting the locations of boundaries between different materials in a desired measurement volume. The apparatus uses at least one measuring probe, the electrodes of which are characterized in that they together form an assembly that differs from a straight line. In addition, a volume at a further distance from the assembly can also be observed by the assembly, so that measurements can be conducted remotely and, on the other hand, the apparatus stays unbroken in diverse measurement situations. By using the EIT-measurement and applying for example a so-called 1D-?-method or methods of machine learning, electrical conductivity distributions in the measured volume are detected. As a result, the locations of the possible boundaries between different materials or for example thicknesses of different material layers are detected.Type: GrantFiled: February 25, 2011Date of Patent: November 10, 2015Assignee: Outotec OyInventors: Jari Kaipio, Marko Vauhkonen, Juha Reunanen, Anssi Lehikoinen
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Publication number: 20150315673Abstract: A method is provided for producing matte such as copper or nickel matte or crude metal such as blister copper in a suspension smelting furnace such as a flash smelting furnace or a flash converting furnace. Also provided is a suspension smelting furnace such as a flash smelting furnace or a flash converting furnace. The suspension smelting furnace comprises a reaction shaft, a settler in communication with a lower end of the reaction shaft, and an uptake shaft. The settler extending in two opposite directions from a landing zone for a jet of oxidized suspension below the reaction shaft in the settler so that the settler comprises a first settler part on a first side of the landing zone and a second settler part on an opposite second side of the landing zone.Type: ApplicationFiled: December 10, 2013Publication date: November 5, 2015Applicant: OUTOTEC (FINLAND) OYInventor: Markku LAHTINEN
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Patent number: 9175226Abstract: A plant for producing char and fuel gas includes a fluidized bed reactor having a first inlet in a lower region of the fluidized bed reactor configured to supply a primary fluidizing gas, a second inlet disposed above the first inlet and configured to supply a secondary gas, and a third inlet configured to supply dried and crushed coal. A further reactor is configured to perform a further process, the further reactor being directly connected to the fluidized bed reactor via a first conduit. A pneumatic injection and/or transportation system is disposed between the fluidized bed reactor and the further reactor. The first inlet is connected to a first supply of a first gas having an oxygen content which is smaller than a second supply of an oxygen enriched second gas connected to the second inlet.Type: GrantFiled: June 4, 2013Date of Patent: November 3, 2015Assignee: OUTOTEC OYJInventor: Andreas Orth
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Publication number: 20150312972Abstract: A method and sealing arrangement for sealing of gaps in a contact shoe ring. The sealing arrangement comprises a refractory fabric which is folded to a substantially U-form shape having a first branch portion attached with refractory glue to the first side edge of the first contact shoe element and a second branch portion attached with refractory glue to the second side edge of the second contact shoe element. At least one refractory felt strip is arranged between the first and second branch portions to fill the space therebetween. A cover strip made of refractory fabric is attached with refractory glue to the side faces of the first and second contact shoe element.Type: ApplicationFiled: December 18, 2013Publication date: October 29, 2015Applicant: Outotec (Finland) OYInventors: Janne OLLILA, Tapio KERANEN
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Publication number: 20150307955Abstract: A method is provided for leaching the metals while granulating molten matte, comprising the steps of feeding a molten matte as a falling stream into a granulation chamber, spraying a liquid jet on the stream of molten matte to atomize the matte, and cooling the matte particles thus formed. The liquid jet comprises an acid solution containing water and sulfuric acid so that the acid solution starts leaching metals from the molten matte when the liquid jet contacts the molten matte. Part of product solution from granulation can be circulated to liquid jets to increase the metal content in the solution and to reduce its acid con-tent.Type: ApplicationFiled: December 19, 2013Publication date: October 29, 2015Applicant: OUTOTEC (FINLAND) OYInventors: Kari HIETALA, Tiina RANKI
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Patent number: D746883Type: GrantFiled: June 4, 2014Date of Patent: January 5, 2016Assignee: Outotec (Finland) OyInventors: Ville Strömmer, Markus Lehtonen
