pgm recovery with the flotation ls
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pgm recovery with the flotation ls

Recovery of PGMs from an oxide ore by flotation and leaching

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.

Technical note: Flotation as a method for concentration of ...

Nov 10, 2016  Flotation study for PGM recovery from an oxidic EAF slag with 40 ... Particle size distribution was analysed by static light scattering measurement conducted on a LS 13320 by Beckman Coulter, USA. X-ray diffraction measurements (XRD) were conducted on a Bruker D5000 by Bruker Corporation, USA. ICP measurements were conducted using a Thermo X ...

Recovery of Platinum, Palladium, and Gold From Stillwater ...

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

The PGM flotation predictor: Predicting PGM ore flotation ...

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.

FLOTATION of GOLD

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

AN INVESTIGATION OF FROTH EFFECTS IN SCAVENGING

ground to a size at which 80% passed 75 μm. Subsequent flotation tests were done in two stages, the rougher and scavenger stages. Focus of this project will be on optimising the scavenger stage as it has the potential to recover most of the ‘lost’ platinum. The objective of the research was to improve PGM recovery and reduce the

The PGM flotation predictor: Predicting PGM ore flotation ...

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.

Technical note: Flotation as a method for concentration of ...

Nov 10, 2016  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%

FLOTATION of GOLD

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

Recovery of platinum group metals from oxide ores—TML ...

A conventional flotation-smelting process has been proposed to recover the platinum group metal (PGM) values from the sulfide ores. With the development of a low temperature roasting, acidic bromine leaching process by The Minerals Laboratory of BHP Minerals, substantial PGM recoveries from oxide and mixed oxide/sulfide ores are now possible.

(PDF) Investigation into the mineralogy and flotation ...

If one assumes a good correlation between PGM liberation and PGE recovery, then for the PPM ''silicate reef'' ore which is 59% liberated, a PGE recovery $60% could be expected. In this study, the highest 4E PGE flotation recovery obtained was 39%. The highest Pt recovery was 52%, and the highest Pd recovery was 20%.

AN INVESTIGATION OF FROTH EFFECTS IN SCAVENGING

ground to a size at which 80% passed 75 μm. Subsequent flotation tests were done in two stages, the rougher and scavenger stages. Focus of this project will be on optimising the scavenger stage as it has the potential to recover most of the ‘lost’ platinum. The objective of the research was to improve PGM recovery and reduce the

(PDF) A review of pyrrhotite flotation chemistry in the ...

Flotation with thiocarbonate collectorsThiocarbonates, particularly xanthates, are widely used as collectors for selective and bulk flotation of sulfide minerals from PGM ores. It has been found that PGM recovery in bulk flotation is limited in some instances by the poor flotation response of pyrrhotite.

A case study of optimising UG2 flotation performance. Part ...

Oct 01, 2010  Being a function of pure flotation, PGM recovery with mass is spread according to energy input and mineralogy. For the same ore the laboratory recovery-mass curve is higher and more to the left than its pilot and plant generated counterpart . Download : Download full-size image; Fig ...

The recovery of platinum group metals from low- grade ...

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%.

Flotation - Metallurgist Mineral Processing Engineer

Dec 21, 2016  Flotation. This is an overview of setting up and conducting a flotation rate test. The test is a means of determining the flotation characteristics of an ore. It is conducted in a laboratory scale cell usually with a volume of two point five litres. The intention is to generate relationships of cumulative recovery, mass pull and grade versus ...

The Effective Technological Processes for PGM Recovery ...

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

Investigating Ways of Improving Recovery of Slow Floating ...

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.

Methods of recovering platinum-group metals from ...

Synopsis. As part of its strategic and critical minerals program, the U.S. Bureau of Mines investigated methods for beneficiating and recovering platinum-group metals (PGM) from ores found in the Stillwater Complex, the only primary resource of platinum-group metals located in the United States.

Leaching and recovery of platinum group metals from UG-2 ...

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

Leaching and recovery of platinum group metals from UG-2 ...

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

Recovery of platinum group metals from oxide ores—TML ...

A conventional flotation-smelting process has been proposed to recover the platinum group metal (PGM) values from the sulfide ores. With the development of a low temperature roasting, acidic bromine leaching process by The Minerals Laboratory of BHP Minerals, substantial PGM recoveries from oxide and mixed oxide/sulfide ores are now possible.

(PDF) Potential Processing Routes for Recovery of Platinum ...

There has been some considerable research aimed at improving flotation recoveries of oxidized PGM ores by employing techniques such as (1) controlled potential sulfidization prior to flotation ...

FLOTATION of GOLD

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

(PDF) A review of pyrrhotite flotation chemistry in the ...

Flotation with thiocarbonate collectorsThiocarbonates, particularly xanthates, are widely used as collectors for selective and bulk flotation of sulfide minerals from PGM ores. It has been found that PGM recovery in bulk flotation is limited in some instances by the poor flotation response of pyrrhotite.

AN INVESTIGATION OF FROTH EFFECTS IN SCAVENGING

ground to a size at which 80% passed 75 μm. Subsequent flotation tests were done in two stages, the rougher and scavenger stages. Focus of this project will be on optimising the scavenger stage as it has the potential to recover most of the ‘lost’ platinum. The objective of the research was to improve PGM recovery and reduce the

Influence of Residence Time and Fine Grinding on PGMS ...

provide an optimum grade/recovery response in flotation [5]. Long residence times are typical of the flotation plants because of the high value of the recovered material. A residence time greater than 60 minutes in the main stream of flotation is not uncommon [7]. The main purpose of this work was to investigate the possibility of PGM recovery by

AN INVESTIGATION INTO THE EFFECTS OF UG2 ORE

However, recovery by flotation is complicated by variations in the mineral composition, the need to grind fine and entrainment of chromite, which has an adverse effect on the subsequent smelting of the concentrate. ... EXTENT OF PGM RECOVERY VARIABILITY ..... 39 3.1. Introduction ..... 39 3.2. General theory for designing a variability test ...

Automated SEM study of PGM T distribution across a UG2 ...

concentrator flotation circuits provides valuable information towards understanding PGM recovery under given milling and flotation conditions. Additional mineralogical characterization also provides information on ore variability, which may affect recovery. Considering the

Treatment of Platinum Flotation Products Johnson Matthey ...

A flowsheet has been developed for the production of rich concentrates of precious and non-ferrous metals by a complex treatment of the flotation products from South African platinum-containing chrome ores. The procedure involves: autoclave leaching, roasting, hydrochlorination and precious metal recovery by sorption. Autoclave oxidative leaching of the initial material allows the non-ferrous ...

Investigations into the Recovery of Platinum Group ...

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 ...

Effect of PGM Mineralogy on PLATSOL® Leachibility

world where such quality PGM (Platinum . Group Metals) concentrates cannot be produced, or only at the expense of a significant loss of recovery. With the present state of the technology, these deposits cannot be economically devel-oped, and await the development of a new process concept. The NorthMet deposit in Minnesota,

WO2004090178A1 - Recovery of platinum group metals ...

ABSTRACT A process of recovering platinum group metals (PGMs) from a pregnant solution or leachate containing PGM values and base metals, typically a cyanide solution or leachate. A non-selective precipitation of the PGM values and base metals to form an insoluble precipitate comprising the PGM values and base metals is followed by selective leaching of the precipitate.

TREATING CHROME TAILINGS FOR PGMs Miningreview

Aug 19, 2008  Sylvania aims to achieve about a 50% to 60% recovery rate, with 43% being achieved at Millsell. Sylvania, which was formed in late 2005, processes the dumps through centralised chrome and PGM flotation plants, and its Millsell and Steelpoort plants

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