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[PDF] THE FLOTATION OF SOUTH AFRICAN

Chromite is an important strategic mineral usually associated with other gangue minerals, mainly silicates. The selective flotation of chromite minerals of any chromite ore have some difficulties due to dissolved cations from gangue minerals. By this work, selective flotation of various chromite ores were studied to determine some of the features of flotation.

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The Characterisation of a Two Stage Flotation Circuit ...

CHROMITE ORE A Thesis submitted to the UNIVERSITY OF CAPE TOWN ... 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- commercial research purposes only. Published by the University of Cape Town (UCT ...

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flotation of chromite ore pdf in south africa

Flotation Of Chromite Ore Pdf In South Africa pimeu. Chromite ore Beneficiation South Africa Chromite Deposits The large Bushveld Complex in South Africa is a major world source of chromium, having estimated15 reserves of up to 10 billion tons* The Complex is located in the north eastern portion of the country in the Transvaal, north of. More chromite gold separation in south africa ...

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The flotation behaviour of chromite with respect to

01/10/1999  Flotation behaviour of chromite with respect to beneficiation of UG2 ore 1179 Air was introduced into the cell as the flotation gas via a syringe needle. The gas bubbles rose through the cell, passing through the pulp where collision between bubbles and mineral particles occurred.

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(PDF) Flotation of chromite and serpentine

However, especially, Na-Oleate flotation of a chromite ore containing serpentine instead of olivine is very difficult because both minerals exhibit almost similar surface properties with chromite ...

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[PDF] THE FLOTATION OF SOUTH AFRICAN

Chromite is an important strategic mineral usually associated with other gangue minerals, mainly silicates. The selective flotation of chromite minerals of any chromite ore have some difficulties due to dissolved cations from gangue minerals. By this work, selective flotation of various chromite ores were studied to determine some of the features of flotation.

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The flotation behaviour of chromite with respect

01/10/1999  Flotation behaviour of chromite with respect to beneficiation of UG2 ore 1179 Air was introduced into the cell as the flotation gas via a syringe needle. The gas bubbles rose through the cell, passing through the pulp where collision between bubbles and mineral particles occurred.

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(PDF) Flotation of chromite and serpentine

However, especially, Na-Oleate flotation of a chromite ore containing serpentine instead of olivine is very difficult because both minerals exhibit almost similar surface properties with chromite ...

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(PDF) Chromite - ResearchGate

Chromite (FeCr2O4) is the only commercially recoverable source of Cr. South Africa holds approximately three-quarters of the world's viable chromite reserves. Kazakhstan, India, Russia, Turkey ...

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v118n6a15 Fluxing of South African chromite ore with ...

Fluxing of South African chromite ore with colemanite South African chromite ores and concentrates are blended to obtain a Cr/Fe ratio that is high enough to produce ‘charge chrome’, a special grade of high-carbon ferrochrome (HCFeCr). Charge chrome contains approximately 50–53% Cr, 6–8% C, 4–6% Si, and the balance Fe, with minor impurities such as S and P (Gasik, 2013). Not all ...

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

Low chromites levels of less than 2.2% whilst maintaining PGMs recovery at 80% were obtained. The results also show that the chemical ... 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 ...

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ChromiuminSouthAfrica - SAIMM - The Southern African ...

SOUTH AFRICAN LOCALANDEXPORT SALESOFCHROMITE ORE Intheearly1960s,Union Carbide Corporation an-nounced thedevelopment ofanewprocess (argon-oxygendecarburization ortheAa.D. process)forthe production of stainless steel, which involved the simultaneous injection ofargon andoxygenintothe moltenchargeinarefiningvessel.Theinjectionofargon

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.. 14,000,000

South African Chrome Ore for the Production of Charge Chrome M. Sciarone CMI Ltd., South Africa ABSTRACT South African chrome ore will become the dominant source for ferrochrome production. Factors such as geology, mining methods, beneficiation and chemistry of the ore are discussed. The effect of chrome/iron ratio on the cost of ferrochrome production is analysed in detail. I. Introduction ...

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Chromium Ore - an overview ScienceDirect Topics

Chromite ores of certain deposits contain minerals of the platinum group (Ir, Ru, Pt, Pd, and Rh), especially in South Africa and Zimbabwe, often found as inclusions in chromite silicate matrix. The mineral and gangue components have different magnetic susceptibilities, which makes it possible to use various magnetic separation methods. Typical ...

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Chromite - Wikipedia

Chromite grains are commonly found in large mafic igneous intrusions such as the Bushveld in South Africa and India. Chromite is iron-black in color with a metallic luster, a dark brown streak and a hardness on the Mohs scale of 5.5. The chromium extracted from chromite has a lot of benefits when it comes to its uses and applications. The use of chromium in anthropogenic processes can develop ...

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

Low chromites levels of less than 2.2% whilst maintaining PGMs recovery at 80% were obtained. The results also show that the chemical ... 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 ...

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The effect of a 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. In certain cases it has been ...

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.. 14,000,000

South African Chrome Ore for the Production of Charge Chrome M. Sciarone CMI Ltd., South Africa ABSTRACT South African chrome ore will become the dominant source for ferrochrome production. Factors such as geology, mining methods, beneficiation and chemistry of the ore are discussed. The effect of chrome/iron ratio on the cost of ferrochrome production is analysed in detail. I. Introduction ...

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Liberation analysis of South African Middle group seam ...

South African chromite occurs within the Bushveld Igneous Complex (BIC) [3]. There are various chromite seams within the BIC and these are the Lower Group (LG6), Middle Group (MG) and the Upper Group (UG) consecutively [4]. The common chromite beneficiation process begins with crushing of the run of mine (ROM) ore for particle size reduction to less than 3mm. Grinding/milling process is ...

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KPMG commodity insights bulletin chromite

South Africa is the world’s largest source of chromite. Historically it has accounted for approximately 72 percent of global reserves, as shown in Figure 2. As a result of South Africa’s abundant chromite reserves, it has well developed infrastructure and technology allowing it to be one of the lowest-cost chrome ore producers in the world ...

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Minerals Free Full-Text The Geological Occurrence ...

In South Africa, chromite is one of the main gangue constituents of especially UG2 ore, making up to between 20 and 60% by mass of the ore (cf. Figure 3). Although the main minerals targeted in flotation are generally the base metal sulphides, viz. pyrrhotite, pentlandite, and chalcopyrite, a certain amount of chromite reports to the flotation concentrate. This is problematic, as chromite is a ...

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POSITION WITH RESPECT TO BENEFICIATION IN THE SOUTH ...

Ca. 91% of chromite ore mined is converted to ferrochrome and destined for the metallurgical industry, primarily in the production of stainless steel (ca. 90%). Foundry and chrome chemical applications account for the remainder of the ore mined and is not significant in the chrome value chain (Exhibit 1). Exhibit 1: Chrome Application South Africa’s competitiveness in ferrochrome does not ...

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[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.

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A comparison of different cyclones in addressing ...

constraints of the size requirement for the flotation of the UG2 ore, the hydrocyclone has rendered itself the preferred classifier. However, classification of the UG2 platinum ore using conventional hydrocyclones is a major challenge due to the differences in the component densities of silica,-the PGM carrying component, and chromite, the barren component3,4. Conventional hydrocyclones ...

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25TPH Chromite Ore Concentrating Plant in

Description of the chromite mine. Project: extraction of chromium from its ore Country: South Africa Mineral type: chromite ore Capacity: 25TPH. Mineral property: Grade of chrome concentrate in raw chromite ore is 28% – 36%. Customers requirement: The grade of the processed chromium concentrate needs to be 42% – 45% Feed particle size: 150mm

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

Low chromites levels of less than 2.2% whilst maintaining PGMs recovery at 80% were obtained. The results also show that the chemical ... 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 ...

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The effect of a 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. In certain cases it has been ...

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Fluxing of South African chromite ore with colemanite

Fluxing of South African chromite ore with colemanite M.W. Erwee, I.J. Geldenhuys, M.B. Sitefane, and M. Masipa Mintek, Randburg, South Africa Abstract – South African chromite ores are typically smelted together with various SiO2- and CaO-containing fluxes, normally quartzite and limestone respectively. The purpose of the SiO2 is to lower the high melting point of the ore, while CaO is ...

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Liberation analysis of South African Middle group seam ...

South African chromite occurs within the Bushveld Igneous Complex (BIC) [3]. There are various chromite seams within the BIC and these are the Lower Group (LG6), Middle Group (MG) and the Upper Group (UG) consecutively [4]. The common chromite beneficiation process begins with crushing of the run of mine (ROM) ore for particle size reduction to less than 3mm. Grinding/milling process is ...

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KPMG commodity insights bulletin chromite

South Africa is the world’s largest source of chromite. Historically it has accounted for approximately 72 percent of global reserves, as shown in Figure 2. As a result of South Africa’s abundant chromite reserves, it has well developed infrastructure and technology allowing it to be one of the lowest-cost chrome ore producers in the world ...

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Minerals Free Full-Text The Geological Occurrence ...

In South Africa, chromite is one of the main gangue constituents of especially UG2 ore, making up to between 20 and 60% by mass of the ore (cf. Figure 3). Although the main minerals targeted in flotation are generally the base metal sulphides, viz. pyrrhotite, pentlandite, and chalcopyrite, a certain amount of chromite reports to the flotation concentrate. This is problematic, as chromite is a ...

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POSITION WITH RESPECT TO BENEFICIATION IN THE SOUTH ...

Ca. 91% of chromite ore mined is converted to ferrochrome and destined for the metallurgical industry, primarily in the production of stainless steel (ca. 90%). Foundry and chrome chemical applications account for the remainder of the ore mined and is not significant in the chrome value chain (Exhibit 1). Exhibit 1: Chrome Application South Africa’s competitiveness in ferrochrome does not ...

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[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.

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A comparison of different cyclones in addressing ...

constraints of the size requirement for the flotation of the UG2 ore, the hydrocyclone has rendered itself the preferred classifier. However, classification of the UG2 platinum ore using conventional hydrocyclones is a major challenge due to the differences in the component densities of silica,-the PGM carrying component, and chromite, the barren component3,4. Conventional hydrocyclones ...

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25TPH Chromite Ore Concentrating Plant in

Description of the chromite mine. Project: extraction of chromium from its ore Country: South Africa Mineral type: chromite ore Capacity: 25TPH. Mineral property: Grade of chrome concentrate in raw chromite ore is 28% – 36%. Customers requirement: The grade of the processed chromium concentrate needs to be 42% – 45% Feed particle size: 150mm

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