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The platinum-group elements are extracted by the following process steps: (a). crushing and grinding of the ore;. (b). production of a bulk sulphide concentrate that.
distribution in the grinding process. The study focuses on the particular case of an Upper Group 2 (UG-2) platinum ore concentrator. Due to the very low grade of sulphide and PGM (Platinum group metals) in UG-2 grinding mechanisms are entirely control by gangue minerals. These two minerals have contrasted properties and PGM content. Chat Online
2016-12-19 · In the present study the effect of using different grinding media, viz, ceramic balls, forged steel balls, 15% Cr steel balls, stainless steel and mixture of stainless steel and 15% Cr steel balls (50:50) on the flotation performance of a Platinum Group Mineral (PGM) UG2 ore was investigated. Test work was conducted using a laboratory scale horizontal tumbling mill and a batch flotation cell. Power draw to achieve a specific P80 was determined for each media type. Changes in flotation behaviour were evaluated in terms of particle size distribution, water recovery, solid recovery and valuable mineral recovery. pH, Eh and DO levels were also measured. Grinding
2021-6-1 · A protocol for predicting gravity recovery of platinum group minerals (PGMs) in grinding circuits is being developed based on that for gravity-recoverable gold (GRG) (Laplante et al., 1990, Banisi et al., 1991, Laplante et al., 1995, Putz et al., 1993, Woodcock, 1994, Noaparast, 1996, Xiao, 2001). The protocol integrates three data sets: gravity-recoverable platinum group minerals (GRPGM) in a stream, the behaviour of the PGMs in the grinding
2018-1-2 · grinding and gravity separation of ore using the centrifugal platinum group metals (PGM), primarily platinum [1]. The only resource of this valuable minerals then have been unique platinum placers of Nizhny Tagil and Isovsky areas in the Middle Urals, from
grinding the ore fine enough to maximize liberation of the platinum-group metals and base metal minerals as much as possible from the host rock; (b) adding collector as soon as possible (perhaps in the grinding mills) to ensure efficient flotation of slow-floating pentlandite, (Ni,Fe) 8 S 9,and its associated platinum minerals ( Weise, Becker, Bradshaw, & Harris, 2007 );
The residue is then leached with a solution comprising sulfuric acid and NaOCl or H 2 O 2 to extract platinum, palladium, copper and gold. Metal values are recovered from ore concentrates by means.
1. A process for recovery of nickel, iron, platinum, palladium, copper and gold values from ore concentrates consisting essentially of (a) smelting the concentrate with a flux to form a matte and slag; (b) dry grinding the matte to a particle size suitable for leaching;
2004-9-1 · In conjunction with this application of gravity concentration is the desire to predict or determine how much gravity recoverable platinum group minerals (GRPGMs) is present in an ore. GRPGMs refer to the portion of platinum group minerals in an ore or stream that
2011-3-3 · The UG-2 ore is a platinum-bearing chromitite ore that contributes a growing proportion of the platinum group metal (PGM) production from the Bushveld Igneous Complex in Northern South Africa (McLaren and de Villiers, 1982, Phillips et al., 2008). The complexity of design of a UG2 concentrator circuit is primarily due to the
The platinum-group elements are extracted by the following process steps: (a). crushing and grinding of the ore;. (b). production of a bulk sulphide concentrate that.
2018-1-2 · grinding and gravity separation of ore using the centrifugal platinum group metals (PGM), primarily platinum [1]. The only resource of this valuable minerals then have been unique platinum placers of Nizhny Tagil and Isovsky areas in the Middle Urals, from which more than 520 tons of platinum
Metal values are recovered from ore concentrates by means of dry grinding, followed by a two-stage leaching process in which the ground concentrate is first leached with sulfuric acid at a temperature of about 90° to 100° C. to selectively leach nickel and iron. The recovery of platinum-group metals, gold, copper, and nickel values in the
2011-3-3 · PLATINUM GROUP METALS: A UNIQUE CASE STUDY 115 grinding and gravity-based (or dense media) separation, followed by flotation to produce a PGM-rich concentrate. The run-of-mine ore grades are typically several g/t, whereas concentrates are some hundreds of g/t (Vermaak, 1995). Concentrate is then smelted to produce a PGM-rich
2021-5-18 · of Platinum Group Minerals (PGMs) Kirsten C. Corin 1,*,Belinda J. McFadzean 1, In a study of the effect of milling circuits for a UG2 ore, it has been shown that on a Excessively fine grinding may lead to higher chromite recoveries, which is known to
A process for treating chromite-bearing ores to obtain useful mineral values, especially platinum group metal, therefrom wherein the ore is separated into magnetic and non-magnetic fractions; the non-magnetic fraction, containing a substantial portion of the platinum group metals, is concentrated and smelted to produce a metal layer containing platinum group metals; and the platinum group
2012-9-6 · The platinum group metals (PGMs) palladium, platinum, and rhodium represent the key materials for automotive exhaust gas treatment. Since there are currently no adequate the grinding effort. Apart from improved the leaching rate, grinding is necessary to allow uniform sampling of the monolith. In general, the amount PGM varies between different
2019-12-12 · PGM extraction, oxidized ore, flotation, leaching. Introduction Southern Africa, specifically South Africa and Zimbabwe, hosts the worlds’ largest deposits of platinum group metals in the Bushveld Complex (BC), South Africa and in the Main Sulphide Zone (MSZ) of the Great Dyke in Zimbabwe.
2021-3-26 · Scale-up of batch grinding data for simulation of industrial milling of platinum group minerals ore. Minerals Engineering, in press Mulenga, F.K., Chimwani, N., 2013. Introduction to the use of the attainable region method in determining the optimal residence time of a ball mill.
2016-1-28 · Platinum Group Metals The availability of growing data sets on wastes, energy, water and GGEs from sustainability reporting can be easily combined with normal production statistics from fi nancial performance. In this way it is possible to link aspects such as energy, GGEs and water costs with ore grade, annual throughput or project confi gu-
2018-1-2 · grinding and gravity separation of ore using the centrifugal platinum group metals (PGM), primarily platinum [1]. The only resource of this valuable minerals then have been unique platinum placers of Nizhny Tagil and Isovsky areas in the Middle Urals, from which more than 520 tons of platinum
A process for treating chromite-bearing ores to obtain useful mineral values, especially platinum group metal, therefrom wherein the ore is separated into magnetic and non-magnetic fractions; the non-magnetic fraction, containing a substantial portion of the platinum group metals, is concentrated and smelted to produce a metal layer containing platinum group metals; and the platinum group
2013-10-25 · distribution in the grinding process. The study focuses on the particular case of an Upper Group 2 (UG-2) platinum ore concentrator. Due to the very low grade of sulphide and PGM (Platinum group metals) in UG-2, grinding mechanisms are entirely control by gangue minerals. These two minerals have contrasted properties and PGM content
2017-11-15 · The paper discusses the results of studying the contents of platinum group elements (PGE) and platinum group minerals (PGM) in ores of the Kingash deposit. The bulk of PGE has been established as concentrated in disseminated sulfide chalcopyrite–pyrrhotite–pentlandite ore and is represented by palladium bismuth–tellurides. During melt differentiation, the content and relationship
2009-9-1 · In the Great Dyke mafic/ultramafic layered intrusion of Zimbabwe, economic concentrations of platinum-group elements (PGE) are restricted to sulfide disseminations in pyroxenites of the Main Sulfide Zone (MSZ). Oxidized ores near the surface constitute a resource of ca. 400 Mt. Mining of this ore
platinum-group minerals. Merensky ore contains much more sulphide than does the ISSN 2179-3956 320. UG2 ore, and the minerals are found in a silicate substrate, while UG2 ore has a of grinding
The Platreef of the Bushveld Complex is currently the largest PGE open pit deposit. In order to investigate the behavior of PGE during weathering, three boreholes covering a sequence of oxidized and pristine Platreef ore from the Mogalakwena mine were studied. Further, sulfides and platinum-group minerals (PGM) at various locations along the strike of the Platreef, at Townlands, Tweefontein
2016-1-28 · Platinum Group Metals The availability of growing data sets on wastes, energy, water and GGEs from sustainability reporting can be easily combined with normal production statistics from fi nancial performance. In this way it is possible to link aspects such as energy, GGEs and water costs with ore grade, annual throughput or project confi gu-
2021-3-26 · Scale-up of batch grinding data for simulation of industrial milling of platinum group minerals ore. Minerals Engineering, in press Mulenga, F.K., Chimwani, N., 2013. Introduction to the use of the attainable region method in determining the optimal residence time of a ball mill.
2021-6-30 · Vancouver, B.C. ValOre Metals Corp. ('ValOre'; TSX‐V: VO; OTC: KVLQF; Frankfurt: KEQ0, 'the Company') today announced initial Platinum Group Element ('PGE', '2PGE+Au') assay results from the ongoing 8,000-metre ('m') drill program at ValOre's 100%-owned Pedra Branca PGE Project ('Pedra Branca') in northeastern Brazil. 'ValOre's drilling at Trapia 1 continues to produce significant, broad
