pgm flotation of ug2 reef ore

Trithiocarbonates for PGM flotation

2006-10-19 · TRITHIOCARBONATES FOR PGM FLOTATION 169 Introduction An increase in the beneficiation of UG2 ore is central to Impala Platinum’s strategic plan for increasing its platinum production in 2006/07. Beneficiation of this chromite rich ore, however, poses certain problems and challenges. High recovery of valuable minerals from UG2 is accompanied by

Investigation into the mineralogy and flotation ...

2014-10-15 · 1. Introduction. The 2.05 Ga Bushveld Complex in South Africa is host to some of the world’s major platinum group mineral (PGM) ore deposits such as the Merensky reef, UG2 reef and Platreef.Although the majority of the mines exploiting these deposits have underground workings, several open cast operations do exist, most notably the Platreef deposit.

Understanding the influence of HPGR on PGM flotation ...

2011-10-1 · PGM liberation of the flotation feed for the Merensky (a) and UG2 (b) platinum ores. The degree of liberation of the PGMs in the UG2 ore is noted to be significantly lower than in the Merensky ore (Fig. 3 b), and which can be related to differences in the primary grain size of the PGMs in the two ore

PGM Ore Processing at Impala's UG-2 Concentrator

The concept behind the UG2 ore separation project was derived from the unique nature of UG-2 mineralogy, namely: • Most PGM rich minerals in the run-of-mine ore are associated with the chrome-rich fraction in the ore (the UG-2 reef itself). The friable nature of the ore and the intergranular location of most of the PGM in this

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

2010-10-1 · Typical grind for Merensky to achieve optimal liberation of PGMs is 55–65% – 75 μm. A grind of 70–80% – 75 μm is usual for UG2 due to its fine PGM grain size. Final grind is dependant upon PGM liberation size and this, in turn, varies with the degree of alteration that the ore has undergone.

The Geological Occurrence, Mineralogy, and Processing

2021-1-7 · The Cr2O3 content of the UG2 Reef varies from 30 to 55%. Total PGE grades vary by locality, but on average, they range between 4 and 7 g/t. The PGMs present in the UG2 Reef are highly variable, but generally, the UG2 is characterised by the abundant PGE sulphides, viz. laurite (RuS2), cooperite (PtS), braggite ((Pt,Pd)NiS), and an unnamed ...

Mineralogical and geochemical variations in the UG2 reef ...

There are three very different ore bodies, the Merensky Reef, the Upper Group 2 (UG2) chromitite, which together can be traced on surface for 300 km in two separate arcs, and the Platreef, which ...

AN INVESTIGATION INTO THE EFFECTS OF UG2 ORE

2016-5-6 · UG2 reef is the main source of production, accounting for approximately 60% of world mining production. However, recovery by flotation is complicated by variations in the

Effect of different grinding media composition on the ...

2018-8-1 · Khonthu et al. (2012) investigated the flotation behaviour of UG2 ore milled using a laboratory horizontal ball mill and an M4 IsaMill. The IsaMill produced finer PGM ore particles than the ball mill. IsaMill product was more irregular than ball mill product and showed higher Cr 2 O 3 entrainment in the flotation of UG2 ore.

PRECONCENTRATION OF UG2 PLATINUM ORE:

2012-9-6 · 30 mm on UG2, the dewatering on the drain and rinse screens is effective and minimal quantities of water are discarded to the DMS waste stockpiles. PGM losses are incurred with the material leaving the plant in the DMS floats stream. Figure 2-Main ore and water flows in a DMS

Reagent Optimization across a UG2 Plant

2013-4-30 · (PGMs) by flotation from different parts of the UG2 reef is an intensive one especially in terms of reagent utilization [1 – 4]. Each operation has developed a specific reagent suite for the optimum recovery of PGMs from their particular UG2 deposit and this has led to a variety of different

Stirred milling—new comminution J technology in the

2017-12-20 · PGM industry is linked to the mineralogy of the primary ore deposits. PGMs occur in the Bushveld in several exploited reef horizons; the first three exploited for PGM production: Merensky Reef UG2 Reef Platreef. MG1 and 2 and LG6 chromitite reefs are exploited for extraction of chromite products.

Mineralogical and geochemical variations in the UG2 reef ...

2020-1-6 · three mineralised horizons namely, the Merensky reef, the Upper Group Two (UG2) reef and the Platreef. The PGE contents of these horizons are conventionally beneficiated via comminution, froth flotation and smelting techniques. The mineralogical and

Understanding the influence of HPGR on PGM flotation ...

Understanding the influence of HPGR on PGM flotation behavior using mineralogy ... In this study it was found that the main ore zone from each UG2 reef sample is characterised by cumulate chromite ...

CHAPTER 1: INTRODUCTION

2021-3-26 · • The relative density of UG2 ore is much higher than Merensky ore [6]. • The UG2 Reef generally has a much higher chromite and a much lower base metal content [6]. • Whereas PGM grades are similar in both reefs, the UG2 Reef contains typically four times the rhodium grade [7].

Mineralogical and geochemical variations in the UG2 reef ...

There are three very different ore bodies, the Merensky Reef, the Upper Group 2 (UG2) chromitite, which together can be traced on surface for 300 km in two separate arcs, and the Platreef, which ...

(PDF) Effects of high pressure grinding rolls on platinum ...

UG2 PGM ores, due to the greater abundance of fine particles ... During the recovery of the valuable platinum group minerals and base metal sulphides in the Merensky Reef ore by flotation, a ...

Mineralogical characterisation of chromite in the UG2 Reef ...

ENGLISH ABSTRACT: The Bushveld Complex of South Africa contains three of the most important platinum deposits in the world namely the Merensky Reef, the Upper Group Two (UG2) chromitite reef and the Platreef. These three ore bodies are principally beneficiated by froth flotation. During the beneficiation of chromite hosted PGE’s by froth ...

UG2 metallurgical variability

2016-2-16 · variability of the UG2 ore. A laboratory cleaner rate was carried out to characterize the samples. Two metallurgical parameters, i.e. the maximum values recovery (R max) and the relative cleaner index (RCI) for the values (2PGE+Au) were used to characterize the metallurgical response of the ore. Materials and methods Materials

v118n1a8 Effect of frother and depressant interaction on ...

2018-1-30 · using PGM-bearing ore from the Great Dyke. Effect of frother and depressant interaction on flotation of Great Dyke PGM ore by T. Mberi*, L.L. Mguni*, and F. Ntuli† #%04'2/2 In the optimization of platinum group metal flotation plants, various parameters are considered in order to achieve the desired recovery and grade of the precious metals.

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

Investigation into the mineralogy and flotation performance of oxidised PGM ore. ... The effects of weathering on the UG2 Chromitite reef of the PGM become a real possibility. Bushveld Complex, with special reference to the platinum-group minerals. S. ...

Reagent Optimization across a UG2 Plant

2013-4-30 · (PGMs) by flotation from different parts of the UG2 reef is an intensive one especially in terms of reagent utilization [1 – 4]. Each operation has developed a specific reagent suite for the optimum recovery of PGMs from their particular UG2 deposit and this has led to a variety of different

Automated SEM study of PGM T distribution across a

2015-11-9 · Automated SEM study of PGM distribution across a UG2 flotation concentrate 2005), the association of PGM with BMS is as important as, if not more important than, liberated PGM for floatability (e.g. Penberthy, 2001). In the same vein, PGM association with gangue minerals may or may not contribute to increased

CHAPTER 1: INTRODUCTION

2021-3-26 · • The relative density of UG2 ore is much higher than Merensky ore [6]. • The UG2 Reef generally has a much higher chromite and a much lower base metal content [6]. • Whereas PGM grades are similar in both reefs, the UG2 Reef contains typically four times the rhodium grade [7].

Development of PGMs and Chrome Extraction Circuit

2012-5-23 · products from the ore. The mined ore undergoes an MF2 process route which is a mill float mill float plant operation from this, the gravity concentrate is extracted. The sulphides are concentrated by flotation. The flotation concentrates undergo smelting and convertion, to produce a PGM-containing nickel-copper matte. The matte is treated

PROCESS AND ASSET MONITORING AT A PGM

2016-2-16 · mineralogy, therefore the focus is on UG2. UG2 ore has a higher chromite content, resulting in processing challenges, but can also contain higher concentrations of platinum group metals (PGMs). The UG2 ore is fed to the concentrator where it is crushed and separated by means of flotation cells.

Extraction of Platinum Group Metals | IntechOpen

2018-2-21 · 2. Geology. In South Africa, the PGM ore is mined in the western and eastern limb of the Bushveld Igneous Complex [].Within the Bushveld Igneous Complex, the Merensky reef, the Platreef and Upper Group 2 (UG2) reef are exploited for platinum production [1, 4, 9].Merensky and Platreef have similar chemical and mineral composition [6, 10].These reefs typically have fairly low contents of

Mineralogical characterisation of chromite in the UG2 Reef ...

Thesis (MSc (Earth Sciences))--University of Stellenbosch, 2010.ENGLISH ABSTRACT: The Bushveld Complex of South Africa contains three of the most important platinum deposits in the world namely the Merensky Reef, the Upper Group Two (UG2) chromitite reef and the Platreef. These three ore bodies are principally beneficiated by froth flotation.

Study of effect of process parameters and their ...

2020-12-8 · Froth flotation process is a complex process as all the parameters in the flotation interact with each other. The effects of individual parameters are well studied but interactive effects are less documented for UG2 ore flotation. This study investigated the effect of the interaction of the process variables in UG2 ore flotation.

A mineralogical perspective on the recovery of platinum ...

2018-6-11 · Similarly, a higher plagioclase content of UG2 ‘split reef’ at 18 wt% plagioclase, versus about 6 wt% plagioclase in the case of ‘normal’ UG2 at TRP, do not translate into a higher milling time required to reduce the ore to 60 wt% passing 75 μm, and confirms the conclusion of Dzvinamurungu et al. that milling times of UG2, when ...

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