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Recovery of PGMs from an oxide ore by flotation and

2021-3-26  has triggered interest in exploration of techniques for PGM recovery from near surface oxidised PGM ores. All earlier attempts to process the oxidised PGM ores by conventional flotation methods achieved poor recoveries (typically less than 50 %) hindering the commercial exploitation of these resources.

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Investigating Ways of Improving Recovery of Slow

2021-3-26  slow floating minerals in a single stage (MF1) Platinum Group Metal milling and flotation plant at the Zimplats Selous Metallurgical Complex. This study was conducted with an aim of improving flotation of PGMs by measuring the slow floating ratio (SFR) and analysing the effect on grade and recoveries as dosages of flotation reagents are altered.

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The PGM flotation predictor: Predicting PGM ore flotation

2012-10-1  Highlights Potential PGM recovery can be predicted from automated SEM results. A method to produce a recovery profile from mineralogical data has been developed. PGM flotation prediction via mineralogy compares well to flotation rate test data. The flotation predictor output can be used for plant monitoring and troubleshooting.

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PGM extraction from oxidized ores using flotation and

2019-12-12  The maximum PGM flotation recovery achieved using sulphide co-collector schemes was 55.1% 3E (Pt, Pd, and Au). Application of the hydroxamate oxide collector improved the flotation recovery to 74.7% 3E. The superior PGM recoveries achieved with hydroxamates probably lies in their ability to form complexes with base metals such as iron.

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Recovery of platinum group metals from oxide ores—TML

The Great Dyke, Zimbabwe, contains over 800 million ounces of platinum and approximately 20 million ounces of rhodium. However, about 10% of the ore is oxidized and cannot be processed with current recovery methods. A conventional flotation-smelting process has been proposed to recover the platinum group metal (PGM) values from the sulfide ores.

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Leaching and recovery of platinum group metals from

2009-8-26  Existing processes for the recovery of platinum group metals (PGM) from UG-2 ores place stringent requirements with regard to chromite content (about 2.8 per cent) upon feed material to the plant. The conventional process sequence involves: smelting of a flotation concentrate to remove gangue material and to produce an iron-nickel-copper-PGM matte

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The Effective Technological Processes for PGM Recovery

2018-1-2  and flotation treatment of tailing products using new classes of reagents for additional recovery of PGM fines. Keywords: Dunites, PGM mineralization, Mineralogical and Technological Research, Technological Processes, Gravity Separation, Flotation INTRODUCTION Since the 19th century, Russia has been a leading producer of

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The recovery of platinum group metals from low- grade

2014-8-5  PGM recovery. A test was conducted with the addition of 10 kg converter slag per 100 kg Easterns concentrate. The reductant to concentrate ratio was kept at 3.5 kg SiC per 100 kg Easterns concentrate. The Ir and Pd recoveries were more than 95%, while Pt recovery was almost 70%. Fe recovery increased to 76%.

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FLOTATION of GOLD 911 Metallurgist

2016-7-11  of difRcult-to-treat (refractory) gold ores. Flotation is also the best method for recovery of gold from base metal oresandgold-containingplatinumgroupmeta-ls (PGM) ores. Excluding gravity preconcentration, Sotationremainsthemost cost-effective beneRciation method. Gold itself is a rare metal and the average grades

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Development of PGMs and Chrome Extraction Circuit

2012-5-23  Keywords—chromatite, PGM, flotation, recovery, tonnage, feed, mass pull, grades, product, tails, time. I. INTRODUCTION he Bushveld complex in South Africa is the largest known platinum group metals (PGM) deposit in the world. The Bushveld igneous complex is a rock containing a rich supply of metals, most importantly more than 80% of the world

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The PGM flotation predictor: Predicting PGM ore

2015-5-18  The PGM flotation predictor predicts PGM recovery by produc-ing an output based on the physical properties of all PGM-bearing particles detected in the sample. These properties include mode of occurrence of the PGM (as per descriptions in Table 1), the float-ability of minerals associated with the PGM, liberation index (i.e.

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On the Management of Gangue Minerals in the Flotation

2018-12-5  With respect to the ions present in a flotation pulp, apart from naturally occurring ions present in the process water, one of the most important of such species is copper sulphate. Many PGM concentrators use copper sulphate as an activator since it will most likely promote the recovery of PGMs which are associated with sulphide minerals.

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The Effective Technological Processes for PGM Recovery

2018-1-2  and flotation treatment of tailing products using new classes of reagents for additional recovery of PGM fines. Keywords: Dunites, PGM mineralization, Mineralogical and Technological Research, Technological Processes, Gravity Separation, Flotation INTRODUCTION Since the 19th century, Russia has been a leading producer of

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Flotation of non-sulphide PGM ores Optimization of

2021-3-26  Flotation of non-sulphide PGM ores Optimization of flotation reagent suite and conditions by reagent suite gave the best performance with respect to both recovery and grade of the PGM concentrate from the ore. Attempts were made to optimize the dosage levels of the 3 reagents.

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Effect of pH on the Recovery and Grade of Base Metal

2011-9-10  The higher PGM recovery was also accompanied by higher chrome content as a result of their similar chemical properties. Keywords- Metal sulphides, gangue phases, recoveries, Platinum Group Metals, Bushveld complex I. INTRODUCTION HIS article concentrates on the effect of pH on the recovery and grade of PGMs from UG2 ore by flotation.

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Designing flotation circuits for high fines recovery

2006-5-1  Traditionally this is achieved by depressing composites from cleaning then regrinding cleaner tailing. However low intensity regrinding with steel media further harms PGM flotation. The result is high circulating loads, slow flotation kinetics, poor fines flotation, and poor grade/recovery performance.

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The PGM flotation predictor: Predicting PGM ore flotation

Highlights Potential PGM recovery can be predicted from automated SEM results. A method to produce a recovery profile from mineralogical data has been developed. PGM flotation prediction via mineralogy compares well to flotation rate test data. The flotation predictor output can be used for plant monitoring and troubleshooting.

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Flotation Kinetics: Mass & Water Recovery VS Entrainment

2016-11-21  The mass recovery of less than five microns slimes due to entrainment is high. Where there’s recovery of the coarser is less than thirty eight plus thirty one micron fraction is much lower. Where PGM data is fairly well bunched despite being sourced

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The Application of a Nitrile-based Collector in the

2021-8-4  these in the PGM industry has not yet been evaluated. This study employed batch rougher flotation tests coupled with mineralogical analysis of tailings samples to investigate the application of Tecflote S11 as a partial or complete replacement of thiol collectors in the flotation of a PGM

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Development of PGMs and Chrome Extraction Circuit

2012-5-23  Keywords—chromatite, PGM, flotation, recovery, tonnage, feed, mass pull, grades, product, tails, time. I. INTRODUCTION he Bushveld complex in South Africa is the largest known platinum group metals (PGM) deposit in the world. The Bushveld igneous complex is a rock containing a rich supply of metals, most importantly more than 80% of the world

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The PGM flotation predictor: Predicting PGM ore

2015-5-18  The PGM flotation predictor predicts PGM recovery by produc-ing an output based on the physical properties of all PGM-bearing particles detected in the sample. These properties include mode of occurrence of the PGM (as per descriptions in Table 1), the float-ability of minerals associated with the PGM, liberation index (i.e.

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On the Management of Gangue Minerals in the Flotation

2018-12-5  With respect to the ions present in a flotation pulp, apart from naturally occurring ions present in the process water, one of the most important of such species is copper sulphate. Many PGM concentrators use copper sulphate as an activator since it will most likely promote the recovery of PGMs which are associated with sulphide minerals.

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Technical note: Flotation as a method for concentration of

2016-11-10  Flotation study for PGM recovery from an oxidic EAF slag with 40 ppm PGMs. Highest enrichment factor of 107 for Pt by single step flotation • Pt content of the concentrate ~ 1500 ppm at a recovery rate up to 17%

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FLOTATION of GOLD 911 Metallurgist

2016-7-11  of difRcult-to-treat (refractory) gold ores. Flotation is also the best method for recovery of gold from base metal oresandgold-containingplatinumgroupmeta-ls (PGM) ores. Excluding gravity preconcentration, Sotationremainsthemost cost-effective beneRciation method. Gold itself is a rare metal and the average grades

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A practical approach to plant-scale flotation optimization

2013-5-3  sacrifice of platinum group mineral (PGM) recovery. With this aim in mind, a metallurgical team was assembled to develop a methodology for plant-scale flotation optimization. The focus areas for flotation optimization were: Air rate Froth depth Frother Depressant Collector Circuit configuration. The current paper presents the work done

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Designing flotation circuits for high fines recovery

2006-5-1  Traditionally this is achieved by depressing composites from cleaning then regrinding cleaner tailing. However low intensity regrinding with steel media further harms PGM flotation. The result is high circulating loads, slow flotation kinetics, poor fines flotation, and poor grade/recovery performance.

get price

Flotation of non-sulphide PGM ores Optimization of

2021-3-26  Flotation of non-sulphide PGM ores Optimization of flotation reagent suite and conditions by reagent suite gave the best performance with respect to both recovery and grade of the PGM concentrate from the ore. Attempts were made to optimize the dosage levels of the 3 reagents.

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Development of PGMs and Chrome Extraction Circuit

2012-5-23  Keywords—chromatite, PGM, flotation, recovery, tonnage, feed, mass pull, grades, product, tails, time. I. INTRODUCTION he Bushveld complex in South Africa is the largest known platinum group metals (PGM) deposit in the world. The Bushveld igneous complex is a rock containing a rich supply of metals, most importantly more than 80% of the world

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LABORATORY FLOTATION RATE TEST PROCEDURE FOR

2016-11-23  LABORATORY FLOTATION RATE TEST PROCEDURE FOR PGM, SULPHIDE AND OXIDE ORES APPLICATION . This test procedure applies to a single stage MF1 (i.e. primary Mill-Float) rate test. See . DEFINITIONS . A rate test is where a number of concentrates are collected over various time periods in order to generate recovery-time, grade-time and mass-time curves.

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Ammonia Leaching as a Pre-Treatment for the

2020-12-8  modest impact on the flotation process, with an indication that leaching treatment rather depresses gangue flotation than enhancing valuable recovery. In comparison, the samples treated in batch stirred tank reactors showed an actual decrease in PGM and base metal upgrade and recovery, and flotation appeared to become entirely unselective.

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