concentration of platinum group metals with flotation
-
-
Platinum - Palladium Flotation
2017-6-24 The platinum-group metal content was more than twice that of a rougher concentrate, and the Al2O3 and CaO contents were significantly lower (see table 7).
Read More
-
-
Recover PGM by Matte Smelting and Leaching
2021-1-6 Concentration by froth flotation was investigated by the Bureau of Mines because the platinum-group-bearing sulfides occur as fine grains and require grinding to approximately 200 mesh for liberation. Recovery of 80 to 90 pct of the Pt-Pd values was achieved from an acidified pulp with a mercaptobenzothiazole collector.
Read More
-
-
US6679383B2 - Flotation of platinum group metal ore ...
Provided is a method involving flotation of a feed of platinum group metal ore material to prepare a platinum group metal concentrate during mineral processing operations. Prior to and/or during the flotation, a lead-containing activator reagent and a xanthate collector reagent are added to the slurry and during the flotation, an oxygen-deficient flotation gas, such as nitrogen gas, is used.
Read More
-
-
Ion Flotation Studies and Separation Procedures for the ...
2018-5-3 flotation properties of the platinum group metals, develop methods for the quantitative recovery of the platinum metals from dilute solutions by ion flotation and investigate the feasibility of ion flotation for the group separation. The anionic chlorocomplexes of Pd(II), Ir(IV), Pt(IV), Au(III), Rh(III) and Ir(III) were floated from aqueous
Read More
-
-
Characterizing and recovering the platinum group
2004-9-1 In those magmatic deposits where platinum-group elements are intimately associated with the base metal sulphides, flotation is used as the first recovery process. Although high recovery, usually between 80% and 95%, can be obtained, the grade of concentrates so obtained is still quite low, which need further upgrade.
Read More
-
-
INVESTIGATION OFTHELEACHING OF THEPLATINUM-
2021-3-26 The dissolution of platinum-group metals (PGMs) requires a high chloride ion concentration inanacidic solution andasuitable oxidant. AtImpala Platinum Refinery, the concentrate is leached in a hydrochloric acid solution using chlorine gas as the oxidant. The goal ofthisleaching stepisatotal dissolution ofthePGMs and gold.
Read More
-
-
Chapter 6.11 Platinum - World Health Organization
2013-10-10 Platinum, together with the other platinum group metals, is present at low levels in the lithosphere, with an average platinum concentration of 0.001–0.005 mg/kg (4). Concentrates of economic importance are present in the Transvaal, South Africa, in Siberia and in the Urals at
Read More
-
-
Recovery of Platinum Group Metals from Spent Catalysts ...
2018-5-7 The recovery of platinum group metals (PGMs) from spent automobile catalysts is a difficult process because of their relatively low contents in the scrap. In this study, to improve the efficiency of the existing recycling techniques, a novel physical concentration method involving treatment with FeCl2 vapor has been examined. The reactions occurring between typical catalyst components and ...
Read More
-
-
Ion flotation studies of the chlorocomplexes of some ...
1980-11-1 The anionic chlorocomplexes of Au(III), Pt(IV), Pd(II), Ir(IV), Ir(III) and Rh(III) can be floated from aqueous solutions with cationic surfactants of
Read More
-
-
US6679383B2 - Flotation of platinum group metal ore ...
Provided is a method involving flotation of a feed of platinum group metal ore material to prepare a platinum group metal concentrate during mineral processing operations. Prior to and/or during the flotation, a lead-containing activator reagent and a xanthate collector reagent are added to the slurry and during the flotation, an oxygen-deficient flotation gas, such as nitrogen gas, is used.
Read More
-
-
Ion Flotation Studies and Separation Procedures for the ...
2018-5-3 flotation properties of the platinum group metals, develop methods for the quantitative recovery of the platinum metals from dilute solutions by ion flotation and investigate the feasibility of ion flotation for the group separation. The anionic chlorocomplexes of Pd(II), Ir(IV), Pt(IV), Au(III), Rh(III) and Ir(III) were floated from aqueous
Read More
-
-
Recovery of Platinum, Palladium, and Gold From
platinum-group metals (PGM) and gold from Stillwater Complex flotation concentrate. The Stillwater Complex is the only major U.S. PGM re source. Development of a suitable extraction technique will contribute to its exploitation. The concentrate was roasted at 1,050° C to convert
Read More
-
-
Investigations into the Recovery of Platinum Group ...
2021-11-18 In the flotation of platinum group minerals (PGMs) it has generally been assumed that they will behave similarly to base metal sulfides and thus sulfide reagent regimes are generally used in such flotation plants. However the tellurides and arsenides of platinum and palladium contribute about 50% of the PGMs present in the Platreef ore, located in the northern limb of the Bushveld Complex of ...
Read More
-
-
THE PRIMARY PRODUCTION OF PLATINUM GROUP
2020-1-24 The six platinum group metals (PGMs) occur together in nature alongside nickel and copper. Mineable deposits of PGMs are very rare, with annual production amounting to around 400 tonnes, several orders of magnitude lower than many common metals. Due to their economic values and higher quantities, platinum and palladium are the most important ...
Read More
-
-
INVESTIGATION OFTHELEACHING OF THEPLATINUM-
2021-3-26 The dissolution of platinum-group metals (PGMs) requires a high chloride ion concentration inanacidic solution andasuitable oxidant. AtImpala Platinum Refinery, the concentrate is leached in a hydrochloric acid solution using chlorine gas as the oxidant. The goal ofthisleaching stepisatotal dissolution ofthePGMs and gold.
Read More
-
-
On the Management of Gangue Minerals in the Flotation
2018-12-5 The Bushveld Complex of South Africa contains almost 90% of the world’s reserves of platinum group minerals (PGMs). In the flotation of PGMs, there are significant challenges arising from the need to treat ever-decreasing grades of the relevant ore deposits. The major challenge in the flotation of these ore bodies is the control and management of the gangue minerals, particularly silicates ...
Read More
-
-
Nano-Silica based mineral flotation frother: Synthesis and ...
2021-6-1 Flotation of Platinum Group metals. PGMs ores originated from an ore body along The Great Dyke in Zimbabwe. The Great Dyke holds the world’s 2nd largest reserves of Platinum Group Metals and chrome (Kotze, 2020). Ore samples and industrial flotation reagents were supplied by Mimosa Mining Company (Pvt) Ltd.
Read More
-
-
Extraction and Refining of the Platinum Metals Johnson ...
2 天前 From this stage onwards the concentration of the platinum group metals is more rapid and the processes entirely chemical. First the slime is subjected to roasting and leaching attacks to remove the last of the copper, nickel, iron and sulphur. This
Read More
-
-
A Critical Overview of Dithiophosphinate and ...
2019-1-7 Historically, as for most reagents used in flotation, the wide-spread use of dialkyl dithiophosphinates as collectors in practical applications has preceded a detailed scientific understanding of how they work. Dialkyl dithiophosphinates are a technologically and commercially important class of collectors used in the flotation processing of Cu-Au, complex polymetallic, and precious metal ores ...
Read More
-
-
US6679383B2 - Flotation of platinum group metal ore ...
Provided is a method involving flotation of a feed of platinum group metal ore material to prepare a platinum group metal concentrate during mineral processing operations. Prior to and/or during the flotation, a lead-containing activator reagent and a xanthate collector reagent are added to the slurry and during the flotation, an oxygen-deficient flotation gas, such as nitrogen gas, is used.
Read More
-
-
Recovery of Platinum, Palladium, and Gold From
platinum-group metals (PGM) and gold from Stillwater Complex flotation concentrate. The Stillwater Complex is the only major U.S. PGM re source. Development of a suitable extraction technique will contribute to its exploitation. The concentrate was roasted at 1,050° C to convert
Read More
-
-
Ion Flotation Studies and Separation Procedures for the ...
2018-5-3 flotation properties of the platinum group metals, develop methods for the quantitative recovery of the platinum metals from dilute solutions by ion flotation and investigate the feasibility of ion flotation for the group separation. The anionic chlorocomplexes of Pd(II), Ir(IV), Pt(IV), Au(III), Rh(III) and Ir(III) were floated from aqueous
Read More
-
-
Potential Processing Routes for Recovery of Platinum
2017-11-6 The beneficiation of platinum group metals (PGMs) from pristine (unweathered) sulfide ores has conventionally been conducted through froth flotation, which typically achieves platinum recoveries of over 85%. The achieved successes of
Read More
-
-
On the Management of Gangue Minerals in the Flotation
2018-12-5 The Bushveld Complex of South Africa contains almost 90% of the world’s reserves of platinum group minerals (PGMs). In the flotation of PGMs, there are significant challenges arising from the need to treat ever-decreasing grades of the relevant ore deposits. The major challenge in the flotation of these ore bodies is the control and management of the gangue minerals, particularly silicates ...
Read More
-
-
THE ENVIRONMENTAL PROFILE OF PLATINUM GROUP
2020-1-24 The six platinum group metals (PGMs) platinum, palladium, rhodium, ruthenium, iridium and osmium occur together in nature alongside nickel and copper. Along with gold and silver, the PGMs are precious metals and are very rare elements in the Earth’s crust. The annual production of PGMs amounts to around 400 tonnes, several orders
Read More
-
-
Chapter 6.11 Platinum - World Health Organization
2013-10-10 Platinum, together with the other platinum group metals, is present at low levels in the lithosphere, with an average platinum concentration of 0.001–0.005 mg/kg (4). Concentrates of economic importance are present in the Transvaal, South Africa, in Siberia and in the Urals at
Read More
-
-
Separating the Platinum Group Metals by Liquid–Liquid ...
2021-11-21 The platinum group metals platinum, palladium, rhodium, iridium, osmium and ruthenium together with silver and gold generally occur in nature associated with the major base metals iron, copper, nickel and cobalt and a wide range of minor elements such as lead, tellurium, selenium and arsenic, and both technical and commercial considerations demand that the individual platinum group metals be ...
Read More
-
-
Magnetic Concentration of Platinum Group Metals from ...
2017-5-31 Spent automobile catalysts are the most important secondary source of platinum group metals (PGMs). However, effective recovery of PGMs from catalyst scraps is difficult because they are present in only small quantities as chemically stable substances. In this study, in order to improve the efficiency of the existing recycling processes, the authors experimentally investigated a novel physical ...
Read More
-
-
A Critical Overview of Dithiophosphinate and ...
2019-1-7 Historically, as for most reagents used in flotation, the wide-spread use of dialkyl dithiophosphinates as collectors in practical applications has preceded a detailed scientific understanding of how they work. Dialkyl dithiophosphinates are a technologically and commercially important class of collectors used in the flotation processing of Cu-Au, complex polymetallic, and precious metal ores ...
Read More
