Surface characteristics and flotation behaviour of platinum and palladium tellurides Article in Minerals Engineering 201312321245 · November 2007 with 83 Reads How we measure reads
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Flotation is widely used to concentrate copper lead and zinc minerals which commonly accompany one another in their ores Many complex ore mixtures formerly of little value have become major sources of certain metals by means of the flotation process This article was most recently revised and updated by Chelsey ParrottSheffer Research Editor
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The concentrate tested was a flotation concentrate from the Northmet project USA assaying 147 Cu 305 Ni 014 Co 267 S 14 gt Au 22 gt Pt and 99 gt Pd Pressureoxidation conditions were 225 °C pulp density was 11 retention time was 120 min and oxygen overpressure was 689 kPa The ore treated had a P80 of 15 μm
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Flotation cells Selecting the correct concentrate launder The selection of flotation cells can depend on residence time froth carry rate and concentrate lip loading In order to minimise capital and operating costs there are different launder configurations available depending on the froth carry rate and concentrate lip loading requirements
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sized flotation cell based on the designed concentrate tonnages and solids content of the concentrate Washwater addition is commonly measured as a ratio with the water in the concentrate A washwater ratio of 10 means that theoretically all the „dirty‟ water in the concentrate containing the entrained ash particles is replaced by
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In conventional flash flotation a SkimAir cell is operated as a standalone cell in a single stage process The single stage process can be recovery or gradedriven In a twostage process the SkimAir is used as a rougher unit to produce a lower grade concentrate at high recovery and an Outotec TankCell is used as a cleaner to
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Cell Manufacturer Outotec TC Outotec 16U Outotec 28U Outotec TC Bateman TC Metso TC Cell Size vol m 3 130 16 28 100 50 30 Circuit Duty RS RS RS R R C Site Location Ontario Australia Quebec Chile South Africa 2phase Metalmineral floated Palladium Nickel Nickel Copper Platinum Now BHP Billiton R rougher S scavenger Ccleaner
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row consisted of five 257m3 Wemco flotation machines The bulk concentrate stream was combined and pumped to the bulk cleaner circuit via an intermediary regrind step The effect of absorbed power on recovery was tested by varying the rotor speed on the final scavenger cell in the fivecell row and measuring the additional copper and
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layer that forms at the top of the flotation cell This froth layer is removed and usually becomes the concentrate Hydrophilic particles remain in the slurry in the flotation cell Most minerals are naturally hydrophilic ie polar in molecular structure and they need collectors to render them hydrophobic nonpolar in molecular structure
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Jameson Cell flotation gives you more concentrate per dollar per metre and per year in a 25 capitalback performance guarantee Jameson Cell has realworld success in 350 installations across 30 countries and has featured in countless papers case studies and reviews
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Flotation Circuits Diagrams Mineral Processing Metallurgy Flotation Circuits for AirLift and Pneumatic Cells An airlift machine can often be run as a roughercleaner cell as in circuit No 5 Fig 52 by taking a finished concentrate off the first few feet and returning the froth from the rest of the machine to the feed end
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Preparation of platinumpalladium flotation concentrate from Stillwater complex ore Bennetts J on FREE shipping on qualifying offers Preparation of platinumpalladium flotation concentrate from Stillwater complex ore
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PlatinumPalladium ores Platinum group metals PGM occur in many coppernickel ores where pentlandite is present particularly for reef type ore bodies Other sulphide minerals also typically associated in PGM ores are chalcopyrite chalcocite pyrrhotite and pyrite
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concentrate 100500 4E gt •Tailings to tailings dams •Chromite recovery •Converter matte 2800 4E gt •Sulphuric acid •Autocatalysts •Jewellery •Other Industrial products eg chemicals electronics fuel cells Mining Crushing Milling Froth Flotation Drying and smelting in electrical furnace AirO
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Jan 12 2010 · Central donut launder Internal peripheral launder External double launder External peripheral launder Radial launder The selection of the size number and type of flotation cells for a particular duty depends on two important factors These are the required flotation residence time and the physical constraints of how much concentrate can be recovered for a given froth surface area and
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Flotation is widely used to concentrate copper lead and zinc minerals which commonly accompany one another in their ores Many complex ore mixtures formerly of little value have become major sources of certain metals by means of the flotation process This article was most recently revised and updated by Chelsey ParrottSheffer Research Editor
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A flash flotation cell is designed differently to a conventional mechanical flotation cell as it operates at higher pulp densities than conventional flotation cells Also it is designed to operate with the very coarse feed size distribution normally present in the cyclone underflow stream
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Proceedings of the 44th Annual Canadian Mineral Processors Conference – 2012 These were the initial hydrodynamic parameters used for flotation cell scaleup Parameters linking the ability of a cell to effectively remove the recovered solids such as tonnesm2 of crosssectional area and tonnesm of launder lip length are also used for scaleup but are not considered to be
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Cell Manufacturer Outotec TC Outotec 16U Outotec 28U Outotec TC Bateman TC Metso TC Cell Size vol m 3 130 16 28 100 50 30 Circuit Duty RS RS RS R R C Site Location Ontario Australia Quebec Chile South Africa 2phase Metalmineral floated Palladium Nickel Nickel Copper Platinum Now BHP Billiton R rougher S scavenger Ccleaner
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sized flotation cell based on the designed concentrate tonnages and solids content of the concentrate Washwater addition is commonly measured as a ratio with the water in the concentrate A washwater ratio of 10 means that theoretically all the „dirty‟ water in the concentrate containing the entrained ash particles is replaced by
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Synopsis As part of its strategic and critical minerals program the US Bureau of Mines investigated methods for beneficiating and recovering platinumgroup metals PGM from ores found in the Stillwater Complex the only primary resource of platinumgroup metals located in the United States
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The circuit consists of rougher and scavenger flotation cell banks The lead concentrate Fig 1242 from lead rougher and scavenger is transferred to lead cleaner cells for washing till specific quality is achieved Sodium cyanide is added to the lead cleaner cells for further depression of pyrite
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The Denver flotation cell modelled here has a volume of 53 litres fitted with an eightbladed impeller of diameter 72 mm The standpipe has a diameter of 42 mm and a rotating shaft of diameter 16 mm The cell is operated under semibatch conditions batch water continuous air The CFD mesh used for the flotation cell has 103000 grid
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Jameson Cell flotation gives you more concentrate per dollar per metre and per year in a 25 capitalback performance guarantee Jameson Cell has realworld success in 350 installations across 30 countries and has featured in countless papers case studies and reviews
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For high value products where recovery is much more important than concentrate grade eg platinum liberation only needs to be enough to expose enough valuable mineral surface for flotation recovery though more liberation to increase concentrate grade for smelting may still be economic
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Mechanical cells are used with a coarse feed with a particle size that is just enough to provide high recovery in flotation This stage generates an intermediate and unliberated concentrate typically with a significantly lower mass than the original feed Then only this rougher concentrate is reground reducing the investment in grinding
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The Bureau of Mines devised a procedure for selectively extracting platinumgroup metals PGM and gold from Stillwater Complex flotation concentrate The Stillwater Complex is the only major US PGM resource Development of a suitable extraction technique will contribute to its exploitation
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The concentrate tested was a flotation concentrate from the Northmet project USA assaying Cu Ni Co S gt Au gt Pt and gt Pd Pressureoxidation conditions were 225 °C pulp density was 11 retention time was 120 min and oxygen overpressure was 689 kPa The ore treated had a
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