rhodium ore flotation process

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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Determination of rhodium content by the method of ...

2017-4-15  Abstract. The method of determination of rhodium by the method of Stripping voltammetry in ores and technogenic raw materials has been developed. Determination of rhodium (III) in solution by Stripping voltammetry method was carried out by peak of selective electrooxidation of bismuth from intermetallic compound Bi2Rh. 1 M KSCN was selected as a background electrolyte. The method of melting of the sample with potassium tetrafluoroborate (KBrF4) at a temperature of 500 was used for the conversion of the rhodium solution.The method of deposition of most ions present in solution of alkali metals was used to separate ions of rhodium (III) from the matrix of the samples. Ions of Pt (IV), Rh (III) and Ir (IV) remain in solution after precipitation. Ions of iridium (IV) and 10-fold excess of platinum (IV) do not interfere with the determination of rhodium

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Process for extraction and concentration of rhodium ...

1990-12-3  8. A process as set forth in claim 1 wherein the source of the insoluble state rhodium includes spent catalyst materials. 9. A process as set forth in claim 8 wherein said spent catalyst material includes spent automotive catalysts. 10. A proess as set forth in claim 1 wherein the source of the insoluble state rhodium comprises a rhodium ore. 11.

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The Characterisation of a Two Stage Flotation Circuit ...

2020-12-8  The performance of each unit in terms of platinum, palladium, rhodium and chromite recoveries was determined by sampling around the unit. ... 1.2.8.3 Flotation circuit treating UG-2 ore 1. 3 Residence time distribution studies ... 1.3.4 The application of RTD studies in flotation 1. 4 Modelling of the flotation process 1.4.1 Empirical models 1 ...

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Rhodium ore - Gold Refining Forum

2008-8-11  7. Process the residue with sulfuric acid. heat it up for 2-3hours. 8. Dilute the sulfuric acid with lots of water before siphoning. (4water : 1 sulfuric acid) 9. After siphoning, process the sulfuric acid with tin or iron. (pH 1) 10. i get black powder. and that's all i know.. i am still working it/the black powder out to get pure rhodium.

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Leaching and recovery of platinum group metals from

2009-8-26  The conventional process sequence involves: smelting of a flotation concentrate to ... that involves reductive roasting of the ore followed by leaching with HCl/chlorine, ion exchange, and recovery of PGM from the ion ... rhodium (Rh): Pt (96 per cent), Pd (79 per cent), Rh (28 per cent). Cyanide (ambient temperature) still did not leach PGM

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Separating the Platinum Group Metals by Liquid–Liquid ...

2021-9-2  Rhodium recovery can be effected from the resulting solution by conventional precipitation, cation exchange removal of base metals, or anion exchange removal. Once all of the platinum group metals have been removed, the solution, containing base metals only, can

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v118n1a8 Effect of frother and depressant interaction on ...

2018-1-30  (platinum, palladium rhodium, plus gold) recovery, grade, mass pull, and water recovery 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

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

2011-9-10  recovery and grade of PGMs from UG2 ore by flotation. Flotation is a process of separating minerals from one another: this technique depends primarily on the difference in the wettability of the particles. This concept is broad and researchers continuously carry out test works to find optimum conditions to improve both grade and recovery of PGMs.

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Learn About Rhodium, a Rare Platinum Group Metal

2019-6-25  The remaining ore is treated with sodium bisulfate NaHSO 4 and melted, resulting in rhodium (III) sulfate, Rh 2 (SO 4) 3. Rhodium hydroxide is then precipitated out using sodium hydroxide, while hydrochloric acid is added to produce H 3 RhCl 6. This compound is treated with ammonium chloride and sodium nitrite to form a precipitate of rhodium.

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The Characterisation of a Two Stage Flotation Circuit ...

2020-12-8  The performance of each unit in terms of platinum, palladium, rhodium and chromite recoveries was determined by sampling around the unit. ... 1.2.8.3 Flotation circuit treating UG-2 ore 1. 3 Residence time distribution studies ... 1.3.4 The application of RTD studies in flotation 1. 4 Modelling of the flotation process 1.4.1 Empirical models 1 ...

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Leaching and recovery of platinum group metals from

2009-8-26  The conventional process sequence involves: smelting of a flotation concentrate to ... that involves reductive roasting of the ore followed by leaching with HCl/chlorine, ion exchange, and recovery of PGM from the ion ... rhodium (Rh): Pt (96 per cent), Pd (79 per cent), Rh (28 per cent). Cyanide (ambient temperature) still did not leach PGM

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

2011-9-10  recovery and grade of PGMs from UG2 ore by flotation. Flotation is a process of separating minerals from one another: this technique depends primarily on the difference in the wettability of the particles. This concept is broad and researchers continuously carry out test works to find optimum conditions to improve both grade and recovery of PGMs.

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US5156721A - Process for extraction and concentration of ...

Enclosed herein is a process for extracting and concentrating rhodium metal from its ores or from secondary sources which comprises electrolysis of an aqueous solution of halide ions at a selected pH so as to generate a reactive species and causing metallic rhodium or a rhodium-containing mixture to remain in intimate contact with said solution.

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CHAPTER 1: INTRODUCTION

2021-3-26  1.2.2.2 Mine Concentrators and the flotation process Chapter 3 provides a detailed summary of the mineralogy of the UG2 Reef and its component PGMs and explains the process of concentration. It is sufficient therefore to say that the flotation circuits as existed in the early 80’s were designed

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Recovery of Gold as By-Product from the Base-Metals ...

2016-1-1  The process flowsheet was based on laboratory and pilot-plant test work for milling flotation and calcine leach. Current focus for the project is away from the Panton process; Panoramic is investigating the potential for improved metallurgical recoveries and higher concentrate grades along with upgrade via ore sorting to produce a saleable high ...

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et al., 1991;

2015-4-15  Since exploitation of the UG2 ore would have more than doubled resources, the incentive for development of a suitable process was high. In addition, the higher rhodium content of the UG2 ore, the production of chromite as apotentially valuable by-product, the higher PGE+Au content at some localities, and the fact that it could be

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Platinum - Palladium Flotation

2017-6-24  Most ore milling operations have work indices ranging from 10 to 12, with extremes between 8 and 22. Because most of the platinum-group bearing sulfides occurred as fine grains and required grinding to approximately 200-mesh for liberation, flotation

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Platinum-Group Metal Ores - an overview ScienceDirect

Srdjan M. Bulatovic, in Handbook of Flotation Reagents: Chemistry, Theory and Practice, 2010 Publisher Summary. This chapter discusses various aspects of PGM (platinum group metal) ores. In general, PGM ores are concentrates in the crust found in two different ways, by leaching the metal-rich lava (mantle) deposited into the crust, which is known as chemical weathering, especially in a hot ...

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OVERVIEW OF PGM PROCESSING - Anglo American

2015-1-12  Ore Anglo Converting Process (at Rustenburg) Our configuration differs from our competitors - we have a broad footprint across all 3 Bushveld limbs. Consequently, our integrated production system is more complex (i.e.13 concentrator plants, 3 smelters and 2 refineries) g g Mine Output ( OM Ore) Concentrator Output (Concentrate)

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Leaching and recovery of platinum group metals from

2009-8-26  The conventional process sequence involves: smelting of a flotation concentrate to ... that involves reductive roasting of the ore followed by leaching with HCl/chlorine, ion exchange, and recovery of PGM from the ion ... rhodium (Rh): Pt (96 per cent), Pd (79 per cent), Rh (28 per cent). Cyanide (ambient temperature) still did not leach PGM

More

v118n1a8 Effect of frother and depressant interaction on ...

2018-1-30  (platinum, palladium rhodium, plus gold) recovery, grade, mass pull, and water recovery 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

More

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

2011-9-10  recovery and grade of PGMs from UG2 ore by flotation. Flotation is a process of separating minerals from one another: this technique depends primarily on the difference in the wettability of the particles. This concept is broad and researchers continuously carry out test works to find optimum conditions to improve both grade and recovery of PGMs.

More

Recovery of Gold as By-Product from the Base-Metals ...

2016-1-1  The process flowsheet was based on laboratory and pilot-plant test work for milling flotation and calcine leach. Current focus for the project is away from the Panton process; Panoramic is investigating the potential for improved metallurgical recoveries and higher concentrate grades along with upgrade via ore sorting to produce a saleable high ...

More

et al., 1991;

2015-4-15  Since exploitation of the UG2 ore would have more than doubled resources, the incentive for development of a suitable process was high. In addition, the higher rhodium content of the UG2 ore, the production of chromite as apotentially valuable by-product, the higher PGE+Au content at some localities, and the fact that it could be

More

THE PRIMARY PRODUCTION OF PLATINUM GROUP

2020-1-24  important metals of the PGMs. The other four, rhodium, ruthenium, iridium and osmium, are mined as by-products of platinum and palladium. 58% of world PGM production takes place in South Africa1 not only for ore haulage but also to drive compressed air to and Russia accounts for a further 26%, most of this as a co-product of nickel mining.

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Production of Platinum and Palladium – Two of the Rarest ...

2017-3-21  The extraction process of palladium is very similar to that of platinum, as these two metals are naturally occurring in the same ore deposits of the earth’s crust. So, it follows the initial step of refining palladium-containing ores by crushing the ore and immersing it in reagent with water. This process is called “froth flotation.”

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OVERVIEW OF PGM PROCESSING - Anglo American

2015-1-12  Ore Anglo Converting Process (at Rustenburg) Our configuration differs from our competitors - we have a broad footprint across all 3 Bushveld limbs. Consequently, our integrated production system is more complex (i.e.13 concentrator plants, 3 smelters and 2 refineries) g g Mine Output ( OM Ore) Concentrator Output (Concentrate)

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US7014048B2 - Composition formed of mercaptans which

Process for the recovery by flotation of metal compounds of value present in ores employing it. Composition intended for the flotation of ores, comprising: from 70 to 95% of a combination (A) of n-dodecyl mercaptan (or NDM) and of tert-dodecyl mercaptan (or TDM), the NDM/TDM ratio by weight of which is between 0.5 and 1.5, and from 5 to 30% of ...

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Assessing a two-stage heap leaching process for Platreef ...

2017-5-18  place in the mineralogy of the ore, throughout the process, and its impact on developing the process for commercial application. 2. Materials 2.1. Concentrate preparation The test work was conducted using a batch sample of flotation concentrate derived from a mill-float-mill-float (MF2) recovery process on Platreef ore as a proxy material.

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