Espoo, Finland
Espoo, Finland

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A current measuring arrangement for measuring electric current flowing in an individual electrode in an electrolysis system comprising 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 (4) disposed on a separating cell wall (5) between each of the two adjacent cells to conduct electric current to the electrodes via a contact point (6) between the busbar and a hanger bar (7) of the electrode, and the current sensing arrangement comprises a magnetic field sensing means (10) for measuring the magnetic field induced by said current. The magnetic field sensing means comprises an array of magnetic field sensors (10) arranged around the contact point (6) substantially at the level of the contact point (6) in a plane of the contact point.


Patent
Outotec Oyj | Date: 2017-03-22

The present invention provides a method of converting copper containing material to blister copper comprising: (a) providing copper containing material comprising copper sulfides and iron sulfides, whereby the copper containing material comprises at least 35 wt% copper of the total weight of the copper containing material; (b) reacting the copper containing material in a furnace with an oxygen containing gas, in the absence of flux, to effect oxidation of iron sulfide and copper sulfide, and controlling injection of the oxygen containing gas and the temperature so that the resulting converter slag is in a molten phase to obtain blister copper and converter slag.


Patent
Outotec Oyj | Date: 2017-02-22

The invention relates to a method for producing cathode copper. The method comprises a smelting step including feeding sulfidic copper bearing material (1; 1a, 1b) and oxygen-bearing reaction gas (2) into a suspension smelting furnace (5; 5a, 5b), to produce blister copper (7), a fire refining step including feeding blister copper (7) into an anode furnace (12) to produce molten anode copper (13), an anode casting step to produce cast anodes (15), a quality checking step (16) for dividing cast anodes (15) into accepted cast anodes (17) and rejected cast anodes (18), an electrolytic refining step including subjecting accepted cast anodes (17) to electrolytic refining in an electrolytic cell (19) to produce cathode copper (20) and as a by-product, spent cast anodes (21), and a recycling step for recycling anode copper of rejected cast anodes (21).


Patent
Outotec Oyj | Date: 2017-01-04

The invention relates to a method and apparatus of removing sulphate, calcium and/or other soluble metals from waste water wherein NaOH and AI(OH)3 are contacted at a temperature of at least 60C and the molar ratio NaOH:AI(OH)3 at least 1.0, for preparing sodium aluminate, the waste water is contacted with the obtained sodium aluminate and a first calcium compound for producing a sludge containing ettringite, a solid-liquid separation is performed for the sludge containing ettringite for separating solids from the liquid thereby producing a first solution, the first solution is contacted with a carbonating agent for neutralising the first solution and precipitating calcium contained in the first solution as calcium carbonate, and a solid-liquid separation is performed for separating precipitated calcium carbonate from the first solution in order to obtain water having a reduced sulphate, calcium and/or other soluble metals content.


The present invention relates to the field of mineral and metallurgical processes, to disintegrating in general and to disintegrating by tumbling mills, and more particularly to a method and arrangement for determining a degree of fullness of a large grinding mill drum, and to a large grinding mill drum. An arrangement for determining a degree of fullness of a large grinding mill drum according to the present invention has a sensor arrangement (13), (18), (28), (29), (30) attached to at least one lifting bar bolt (7) of an at least one lifting bar (5) of the grinding mill, said sensor arrangement (13), (18), (28), (29), (30) having an at least one force transducer (9), (25) attached to said at least one lifting bar bolt (7). With the help of the measurement arrangement according to the present invention more reliable measurement data can be provided for the determination of the degree of fullness of a large grinding mill drum.


The invention relates to a method and to an arrangement for monitoring performance of a burner (1) of a suspension smelting furnace (2). The burner (1) is arranged at the top structure (3) of a reaction shaft (4) of the suspension smelting furnace (2). The burner (1) has a solids feeding channel (5) that has a solids outlet (6) opening up into the reaction shaft (4), and a reaction gas channel (12) comprising a reaction gas channel (12) a that has a reaction gas outlet (8) opening up into the reaction shaft (4). The arrangement comprises at least one imaging means (9) for producing images representing the cross- section of the reaction gas channel (12), and a processing means (10) for receiving images of the cross-section of the reaction gas channel (12) from the imaging means (9). The invention relates also to uses of the method and of the arrangement.


Grant
Agency: European Commission | Branch: H2020 | Program: RIA | Phase: SC5-11e-2015 | Award Amount: 7.84M | Year: 2016

The INTMET approach represents a unique technological breakthrough to overcome the limitations related to difficult low grade and complex ores to achieve high efficient recovery of valuable metals (Cu, Zn, Pb, Ag) and CRM (Co, In, Sb). Main objective of INTMET is applying on-site mine-to-metal hydroprocessing of the produced concentrates enhancing substantially raw materials efficiency thanks to increase Cu\Zn\Pb recovery over 60% vs. existing selective flotation. 3 innovative hydrometallurgical processes (atmospheric, pressure and bioleaching), and novel more effective metals extraction techniques (e.g. Cu/Zn-SX-EW, chloride media, MSA, etc) will be developed and tested at relevant environment aiming to maximise metal recovery yield and minimising energy consumption and environmental footprint. Additionally secondary materials like tailings and metallurgical wastes will be tested as well for metals recovery and sulphur valorisation. The technical, environmental and economic feasibility of the entire approaches will be evaluated to ensure a real business solution of the integrated INTMET process. INTMET will be economically viable thanks to diversification of products (Cu, Zn, Pb), high-profitable solution (producing commodities not concentrates), with lower operation and environmental costs (on-site hydroprocessing will avoid transport to smelters) and allowing mine-life extension developing a new business-model concept based on high efficient recovery of complex ores that will ensure EU mining industry competitiveness and employment. INTMET is fully aligned with EIP-RM validated in the PolymetOre Commitment where most of INTMET partners take part on and the market up-take solutions are guaranteed by an exploitation from industrially-driven consortia composed by 3 Mines, 2 SMEs (AGQ -waste&water tech provider; MINPOL -policy & exploitation expert), 2 tech providers (OUTOTEC and TR) and 5 complementary RTDs with expertise in leaching and recovery metals processing


Grant
Agency: European Commission | Branch: H2020 | Program: RIA | Phase: SC5-11e-2015 | Award Amount: 7.91M | Year: 2016

METGROW\ will address and solve bottlenecks in the European raw materials supply by developing innovative metallurgical technologies for unlocking the use of potential domestic raw materials. The METGROW\ consortium has received an EIP RM Commitment status. The consortium is supported by internationally respected research institutes and universities. Many of the partners (9) are members of EIT KIC Raw Materials consortium as well. The value chain and business models for metal recovery from low grade ores and wastes are carefully looked after. Within this project, both primary and secondary materials are studied as potential metal resources. Economically important nickel-cobalt deposits and low grade polymetallic wastes, iron containing sludges (goethite, jarosite etc.) which are currently not yet being exploited due to technical bottlenecks, are in focus. Concurrently, METGROW\ targets innovative hydrometallurgical processes to extract important metals including Ni, Cu, Zn, Co, In, Ga, Ge from low grade ores in a cost-effective way. In addition a toolbox for metallurgical system is created in the project using new methods and combinations. The unused potential of metal containing fine grained industrial residues are evaluated, while hybrid and flexible hydrometallurgical processes and treatment methods of fines are developed for both materials. Training and education of new professionals are facilitated within the METGROW\ project. The knowledge of raw materials and sustainable technologies will attract new talents in the field who can flexibly change fields from treatment of secondary to primary resources, which also smoothens the economic ups and downs in the primary sector.


Grant
Agency: European Commission | Branch: H2020 | Program: RIA | Phase: SPIRE-02-2016 | Award Amount: 5.90M | Year: 2016

The vision of COCOP is that complex process-industry plants are optimally run by operators with the guidance of a coordinating, real-time optimisation system. COCOP will strengthen the global position of the European process industry, which represents 20 per cent of the European manufacturing base with around 450,000 companies generating 1.6 billion in turnover and 6.8 million jobs. The projects objective is to enable plant-wide monitoring and control by using the model-based, predictive, coordinating optimisation concept in integration with plants automation systems. This ambitious approach will be developed and verified in co-operation of European universities, research institutes and industry. The Consortium comprises two universities, three research organisations, the leading copper-plant technology provider, two large companies from the process industry (steel and special chemicals) and four SMEs providing automation solutions. Technical objective is to define, design and implement a concept that integrates existing industrial control systems with efficient data management and optimisation methods and provides means to monitor and control large industrial production processes. The plant-wide monitoring and control comprehend computationally intensive data analysis and large scale optimisation. The social objective is to improve operator plant-wide awareness and reduce mental workload. COCOP will liaise with standardisation bodies (automation) to ensure a sustained impact of the projects results. Commercialisation of the solution by its process-automation industry partners will allow plant operators to approach optimal production and result in reduced energy and resource consumption, and decreased on-site material handling time and greenhouse gas emissions.


Grant
Agency: European Commission | Branch: H2020 | Program: MSCA-ITN-ETN | Phase: MSCA-ITN-2016 | Award Amount: 3.86M | Year: 2016

Unlike China, Russia or South Africa, the EU-28 Member States are not in the fortunate position of having vast, easily accessible ore deposits containing valuable metals. However, Europe does have large quantities of secondary industrial residues (tailings, sludges, slags and ashes) that contain significant concentrations of both critical and economically important metals. The European Training Network for the Sustainable, zero-waste valorisation of critical-metal-containing industrial process residues (SOCRATES) targets ground-breaking metallurgical processes, incl. plasma-, bio-, solvo-, electro- and ionometallurgy, that can be integrated into environmentally friendly, zero-waste valorisation flow sheets. By unlocking the potential of these secondary raw materials, SOCRATES contributes to a more diversified and sustainable supply chain for critical metals (cf. Priority area 3 in EC Circular Economy Action Plan; COM(2015)614/2). The SOCRATES consortium brings together all the relevant stakeholders along the value chain, from metal extraction, to metal recovery, and to residual matrix valorisation in added-value applications, such as supplementary cementitious materials, inorganic polymers and catalysts. To maximise applicability, SOCRATES has selected four commonly available and chemically complementary residue families: (1) flotation tailings from primary Cu production, (2) Fe-rich sludges from Zn production, (3) fayalitic slags from non-ferrous metallurgy, and (4) bottom ashes from incineration plants. As a basis for a concerted effort to strengthen the EUs critical-metal supply chain for Ge, In, Ga and Sb, SOCRATES trains 15 early-stage researchers (ESRs) in technological innovation: metal extraction (WP1), metal recovery (WP2), residual matrix valorisation (WP3) and integrated assessment (WP4). By training the ESRs in scientific, technical and soft skills, they are the next generation of highly employable scientists and engineers in the raw-materials sector.

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