flotation of chromite ore pdf in south africa

flotation of chromite ore pdf in south africa

(PDF) Flotation of chromite and serpentine

Download full-text PDF Read full-text. ... Na-Oleate flotation of a chromite ore containing serpentine instead of olivine is very difficult ... In the Western Chrome Mine in South Africa, the ...

The Characterisation of a Two Stage Flotation Circuit ...

CHROMITE ORE A Thesis submitted to the ... 7700 South Africa August 1996 . The copyright of this thesis vests in the author. No quotation from it or information derived from it is to be published without full acknowledgement of the source. The thesis is to be used for private study or non- ... 4. 3 .1.4 Chromite 4.3.2 Batch flotation results 4 ...

Development of PGMs and Chrome Extraction Circuit from UG ...

complex in South Africa, the main ore body is the UG-2 chromitite layer. The mine is situated on the western limb of ... removing the chromite fraction from the first rougher stage ... flotation circuit, the bulk of the fine chromatite particles in . Development of PGMs and Chrome Extraction

(PDF) Chromite - ResearchGate

Chromite ore is mined in over 20 countries, but about 80% of ... p0045 Turkey is the world’ s fourth largest producer of chromite after South Africa, Kazakhstan, ... files/Chromite%20Review.pdf ...

AN INVESTIGATION OF FROTH EFFECTS IN SCAVENGING

10% and secondly the high chromite content in the flotation concentrate leads to downstream smelting problems. This project was aimed at improving the recovery of platinum and reducing the amount of chromite in the feed to the smelter. Platinum concentrators in South Africa normally consist of two stages of grinding and flotation and this

The effect of copper sulphate addition on the recovery of ...

Flotation performance was evaluated using the relationship of mass to water recovery as well as the chromite recovery. Experimental details The ore The UG2 ore was obtained from the Bushveld Igneous complex in the North West province of South Africa. The UG2 ore consists mainly of chromite at a composition of roughly 26% by mass.

The flotation behaviour of chromite with respect to the ...

The UG2 reef of the Bushveld Igneous Complex in South Africa is a valuable source of platinum group metals (PGMs) that is beneficiated by flotation. Chromite is one of the main gangue consituents of UG2 ore and it is essential that the amount of chromite reporting to the concentrate during flotation be minimised since it is detrimental to the ...

v115n8a6 Comparison of physical properties of oxidative ...

(BC) in South Africa, which holds an estimated three-quarters of the world’s viable chromite ore resources (Cramer et al., 2004). Several chromite seams exist in the BC. The seams of economic interest are the Lower Group 6 (LG6), the Middle Group 1 and 2 (MG1 and 2), and the Upper Group 2 (UG2) seams (Cramer et al., 2004). The LG and MG

FLOTATION BEHAVIOR OF SUDANESE CHROMITE ORES

Table 1: Particle size distribution of low chromite ore as feed for flotation tests Particle size(mm) Weight% Cum.U.size % -0.180+ 0.076 41.42 100 -0.076 + 0.038 13.7 58.58 -0.038 44.9 44.9 2.2.2 Flotation Tests For each test, a certain weight of ore sample (chromite / serpentine / chromite ore) was transferred to a 2-liter flotation cell.

Chrome ore beneficiation challenges opportunities – A ...

Apr 01, 2011  The major chromite ore and concentrates producing countries are South Africa, India and Kazakhstan, representing 70% of 2008 world production as a whole. South Africa and Zimbabwe hold about 90% of the world’s chromite reserves and resources, with South Africa having reserves of about 3.1 billion tonnes.

Development of PGMs and Chrome Extraction Circuit from UG ...

complex in South Africa, the main ore body is the UG-2 chromitite layer. The mine is situated on the western limb of ... removing the chromite fraction from the first rougher stage ... flotation circuit, the bulk of the fine chromatite particles in . Development of PGMs and Chrome Extraction

Application of fundamentals in optimizing platinum ...

The UG-2 ore is a platinum-bearing chromitite ore that ... production from the Bushveld Igneous Complex in Northern South Africa (McLaren and de Villiers, 1982, Phillips et al., 2008). The complexity of design of a UG2 concentrator circuit is primarily due to the ... The entrainment of chromite to the UG2 flotation

The flotation behaviour of chromite with respect to the ...

The UG2 reef of the Bushveld Igneous Complex in South Africa is a valuable source of platinum group metals (PGMs) that is beneficiated by flotation. Chromite is one of the main gangue consituents of UG2 ore and it is essential that the amount of chromite reporting to the concentrate during flotation be minimised since it is detrimental to the ...

CHAPTER I INTRODUCTION

The first section reviews the treatment of ore in order to obtain PGM as product. Section two reviews the phase and stability diagrams of the relevant binary, ternary and quaternary systems. II.1.PGM in South Africa Generally, the ore is treated by crushing, grinding and flotation to produce a concentrate,

v115n8a6 Comparison of physical properties of oxidative ...

(BC) in South Africa, which holds an estimated three-quarters of the world’s viable chromite ore resources (Cramer et al., 2004). Several chromite seams exist in the BC. The seams of economic interest are the Lower Group 6 (LG6), the Middle Group 1 and 2 (MG1 and 2), and the Upper Group 2 (UG2) seams (Cramer et al., 2004). The LG and MG

.. 14,000,000 - Pyrometallurgy

reducing the chromite ore with a carbonaceous reductant in submerged arc furnace. Conventional smelting in South Africa is smelting ore without any agglomeration of the ore. This necessitates furnace burden which contains a high percentage of ore fines , generally in the order 50% charged .

The effect of a copper sulphate addition on the recovery ...

Abstract. Chromite and talc are two major gangue minerals in platinum bearing UG2 ore processed from the Bushveld Complex in South Africa. During flotation, talc

The impact of platinum production from UG2 ore on ...

dominance of South Africa as the geographical source of chromites and ferrochrome, so much so that South Africa is supplying 55% of the world’s ferrochrome requirements as well as exporting significant tonnages of chromite concen-trates. Ferrochrome production technology is also changing in response to Cr6+ environmental concerns and in ...

The extractive metallurgy of south africa’s platinum ores ...

The extraction technology for platinum-group metals (PGMs) has changed dramatically in the last 80 years, and the changes are likely to continue for years to come. This article will review advances in PGM extraction, including developments in semi-autogenous and fully autogenous milling; flotation equipment applications for treating high-chrome ores; increases in power densities for future ...

US4295881A - Process for extraction of platinum group ...

A process for treating chromite-bearing ores to obtain useful mineral values, especially platinum group metal, therefrom wherein the ore is separated into magnetic and non-magnetic fractions; the non-magnetic fraction, containing a substantial portion of the platinum group metals, is concentrated and smelted to produce a metal layer containing platinum group metals; and the platinum group ...

A Process Mineralogical Evaluation of Chromite at the ...

A process mineralogical study based on three texturally and mineralogically different chromite-bearing ore types at the Nkomati nickel mine was undertaken, with focus on chromite. Chromite is a by-product of the Ni-Cu-Co-PGE ore at Nkomati Nickel mine. These being the PCMZ_MG (medium-grade Ni-Cu sulphide silicate ore with disseminated chromite), PCMZ_HG (high-grade Ni-Cu sulphide silicate ore ...

50TPH Chromite Ore Beneficiation Process in South Africa ...

Material: rock type chrome ore Capacity: 50TPH Country: South Africa Feeding size: 150mm Mineral condition description: in raw ore 38-40% Cr2O3 Customers requirements: Chromite concentrate with

Effect of pH on the Recovery and Grade of Base Metal ...

Africa and Universities of South Africa and Johannesburg. ... The UG2 ore consists mainly of chromite of about (60-90%) and Cr2O3 content averages of 43.5%. The dominant ... During froth flotation the ore is crushed and ground to a specific size sufficient for mineral liberation. The ore is then

South Africa 3000t/d Chromite Flotation Processing Plant ...

This project was reconstruction project. It was South Africa 8000t/d platinum and 3000t/d chromite flotation system. The mineral processing flow was two-stage coarse - one-stage scavenging - three-stage concentrating flotation process.

AN INVESTIGATION OF FROTH EFFECTS IN SCAVENGING

10% and secondly the high chromite content in the flotation concentrate leads to downstream smelting problems. This project was aimed at improving the recovery of platinum and reducing the amount of chromite in the feed to the smelter. Platinum concentrators in South Africa normally consist of two stages of grinding and flotation and this

CHAPTER I INTRODUCTION

The first section reviews the treatment of ore in order to obtain PGM as product. Section two reviews the phase and stability diagrams of the relevant binary, ternary and quaternary systems. II.1.PGM in South Africa Generally, the ore is treated by crushing, grinding and flotation to produce a concentrate,

Application of fundamentals in optimizing platinum ...

The UG-2 ore is a platinum-bearing chromitite ore that ... production from the Bushveld Igneous Complex in Northern South Africa (McLaren and de Villiers, 1982, Phillips et al., 2008). The complexity of design of a UG2 concentrator circuit is primarily due to the ... The entrainment of chromite to the UG2 flotation

Effect of pH on the Recovery and Grade of Base Metal ...

Africa and Universities of South Africa and Johannesburg. ... The UG2 ore consists mainly of chromite of about (60-90%) and Cr2O3 content averages of 43.5%. The dominant ... During froth flotation the ore is crushed and ground to a specific size sufficient for mineral liberation. The ore is then

.. 14,000,000 - Pyrometallurgy

reducing the chromite ore with a carbonaceous reductant in submerged arc furnace. Conventional smelting in South Africa is smelting ore without any agglomeration of the ore. This necessitates furnace burden which contains a high percentage of ore fines , generally in the order 50% charged .

[PDF] The effect of copper sulphate addition on the ...

Chromite and talc are two major gangue minerals in platinum bearing UG2 ore processed from the Bushveld Complex in South Africa. During flotation, talc is effectively depressed by the addition of depressants. Chromite, on the other hand, is considered to be hydrophilic, its recovery is believed to follow water recovery and therefore recovered by entrainment only.

The effect of a copper sulphate addition on the recovery ...

Abstract. Chromite and talc are two major gangue minerals in platinum bearing UG2 ore processed from the Bushveld Complex in South Africa. During flotation, talc

South Africa 3000t/d Chromite Flotation Processing Plant ...

This project was reconstruction project. It was South Africa 8000t/d platinum and 3000t/d chromite flotation system. The mineral processing flow was two-stage coarse - one-stage scavenging - three-stage concentrating flotation process.

(PDF) An efficient process for the beneficiation of a low ...

Download Free PDF. Download Free PDF. An efficient process for the beneficiation of a low grade chromite ore. Mineral Processing and Extractive Metallurgy, 2010. Tayfun Çiçek. H. Cengizler. İ. Cöcen. Tayfun Çiçek. H. Cengizler. İ. Cöcen

The extractive metallurgy of south africa’s platinum ores ...

The extraction technology for platinum-group metals (PGMs) has changed dramatically in the last 80 years, and the changes are likely to continue for years to come. This article will review advances in PGM extraction, including developments in semi-autogenous and fully autogenous milling; flotation equipment applications for treating high-chrome ores; increases in power densities for future ...

A Process Mineralogical Evaluation of Chromite at the ...

A process mineralogical study based on three texturally and mineralogically different chromite-bearing ore types at the Nkomati nickel mine was undertaken, with focus on chromite. Chromite is a by-product of the Ni-Cu-Co-PGE ore at Nkomati Nickel mine. These being the PCMZ_MG (medium-grade Ni-Cu sulphide silicate ore with disseminated chromite), PCMZ_HG (high-grade Ni-Cu sulphide silicate ore ...

An investigation of froth effects in scavenging flotation ...

South Africa is the largest supplier of platinum group metals (PGMs), which are mined from three reefs in the Bushveld Igneous Complex. About 60% of the world’s mined PGMs come from a single reef, the UG-2 reef (Mudd, 2010). Flotation is the primary method used to concentrate the PGMs.

Platinum-group minerals in the LG and MG chromitites of ...

May 10, 2015  The chromitites of the Bushveld Complex in South Africa contain vast resources of platinum-group elements (PGE); however, except for the economic upper group (UG)-2 chromitite seam, information on the distribution of the PGE in the ores and on the mineralogical nature, assemblages, and proportions of platinum-group minerals (PGM) is essentially missing.

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

IntroductionThe 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.