Our platinum group leaching


Minerals Engineering International Online - Commodities ...

J. Mulwanda, C. Dorfling, Recovery of dissolved platinum group metals from copper sulphate leach solutions by precipitation, Minerals Engineering, Vol. 80, 2015 C.A. Snyders, S.M. Bradshaw, G. Akdogan, J.J. Eksteen, Determination of the equilibrium and film diffusion constants of the platinum cyanide anions during the elution from activated ...

Gold Pre-Leach Process - bikerpoint.eu

Leaching and recovery of platinum group metals . Mintek's process was a relatively high grade UG-2 concentrate, it was felt that the use of these harsh conditions, requiring …

Extracting platinum metals - Chemical Engineering | Page 1

Platinum-group metals form a complex range of 30 to 40 minerals, each with a different resistance to leaching, making it difficult to find a unique solution for all deposits, explains Eksteen. Once leached, the metals are adsorbed from solution on to activated carbon, he says.

Platinum group | chemical element group | Britannica.com

The solid leach residue contains 15 to 20 percent platinum-group metals. Sometimes gravity separation is employed prior to flotation; this results in a concentrate containing up to 50 percent platinum metals, making smelting unnecessary.

cyanide leaching of rh - konaseematourism.org.in

High Temperature Cyanide Leaching of Platinum CDC stacks. High temperature cyanide leaching of platinum group metals from automobile . and 79 pct for Rh (approximately 1.3,. 200,000 tr oz of Pd, and

Platinum-recovery - Process, Technology, Patent ...

Platinum-recovery - We are providing the information such as Process, Technology, Patent, Consultants, Company Profiles, Reports, Market, Projects about platinum from catalystic converters

Recovery of Platinum Group Metals from the Leach Solution ...

The recovery of platinum group metals (PGMs) from the leach solution of spent auto-catalyst and the wash solution of the leach residue was investigated in the laboratory scale experiments by the ...

Extractive Metallurgy of Nickel, Cobalt and Platinum Group ...

Nickel, cobalt and platinum group metals are key elements for materials processing. They occur together in one book because they (i) map together on the periodic table (ii) occur together in many ores and (iii) are natural partners for further materials processing and materials manufacturing.

Leaching platinum-group metals in a sulfuric acid/chloride ...

A leaching process was established based on the ability of platinum-group metals to form stable chloro-complexes in acidic chloride solutions. Industrial catalyst losses were examined for the...

Recovery of platinum group metal value via ... - DeepDyve

Read "Recovery of platinum group metal value via potassium iodide leaching, Hydrometallurgy" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

High-temperature cyanide leaching of platinum-group metals ...

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Leaching Platinum-Group Metals in a Sulfuric Acid/Chloride ...

2003 April • JOM 37 Research Summary Precious Metals: Aqueous A leaching process was established based on the ability of platinum-group metals to form stable chloro-complexes

About Platinum - Gold and silver mines

The solid leach residue contains 15 to 20 percent platinum-group metals. Sometimes gravity separation is employed prior to flotation; this results in a concentrate containing up to 50 percent platinum metals, making smelting unnecessary.

Heap Leach: Mining's breakthrough technology | MINING.com

Amid turmoil on commodity markets and a relentless drive by mining companies to increase efficiencies, heap leaching has emerged as a breakthrough technology experiencing stunning growth over the ...

Welcome to CDC stacks | Cyanide leaching chemistry of ...

"The U.S. Bureau of Mines investigated leaching automobile catalysts with sodium cyanide (nacn) solutions at high temperatures to recover platinum-group metals (PGM). The feed was monolith rejects, used monolith, and used pellet catalysts.

Rhenium Extraction by Leaching in Ammonium Iodide Iodine

The new process using halogen salts is based on the fact that platinum group metals and rhenium metal are soluble in leaching solutions containing halogen salts and ammonia under appropriate conditions.

RECYCLING OF PLATINUM GROUP METALS FROM …

RECYCLING OF PLATINUM GROUP METALS FROM AUTOMOTIVE CATALYSTS BY AN ACIDIC LEACHING PROCESS ... J. Antrekowitsch University of Leoben Abstract The platinum group metals (PGMs) palladium, platinum, and rhodium represent the key materials for automotive exhaust gas treatment. ... As the leaching solution is regenerated and reused, wastewater ...

The Use of Heap Bioleaching as a Pre-Treatment for ...

The Use of Heap Bioleaching as a Pre-Treatment for Platinum Group Metal Leaching ... J. M. Mwase and J. Petersen, "The Use of Heap Bioleaching as a Pre-Treatment for Platinum Group Metal Leaching", Solid State Phenomena, Vol. 262, pp. 151-154, 2017. Online since: August 2017.

Cyanide Leaching Platinum Catalytic Converter Chemistry

Previous research by the U.S. Bureau of Mines showed that autoclave cyanide leaching of used automobile exhaust catalysts for recovery of platinum group metals (PGM) was technically feasible. This work involves a more detailed investigation of the chemistry of …

A conceptual flowsheet for heap leaching of platinum group ...

The platinum leach curve in Fig. 4 is essentially linear and it suggests that there is a chance that a desired target of extraction could be achieved over a longer leaching period. Table 5 . PGM, BM and gangue metal extractions from cyanide heap leach.

Hydrometallurgical recovery/recycling of platinum by the ...

1. Introduction. Platinum (Pt) is a costly precious metal with applications in the manufacturing of catalysts, electronic devices, space materials, biomedical devices and jewelry, among others, due to its chemical resistivity, high-temperature stability and stable electrical properties.

STUDIES ON PLATINUM RECOVERY FROM SOLUTIONS AFTER …

Studies on platinum recovery from solutions after leaching of spent catalysts by solvent extraction 241 supplier of platinum, accounting for roughly 10%.

Recovering low-grade platinum metals - Phys.org

Remote, low-grade deposits of platinum group metals (PGMs) can be economically recovered using novel direct leaching approaches, doing away with the need for traditional, expensive smelting ...

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

Leaching and recovery of platinum group metals from UG-2 concentrates yields were not good (less than 40 per cent). Platinum leaching was particularly poor with cyanide (ambient

How to Refine Precious Metals - Hydrometallurgy: Part 1 ...

Apr 17, 2014· This video shows the refining process steps for leaching precious metals used by professional refining companies. Silver, Gold, Platinum,, Palladium and the other platinum group metals.

Sherritt International - Operations - Commercial and ...

Leaching of nickel-copper matte and recovery of platinum group metals Sherritt's matte leach process uses sulphuric acid leaching in a combination of atmospheric and/or pressure leaching steps to quantitatively dissolve nickel and copper in nickel-copper matte and produce a high-grade platinum group metal (PGM) concentrate for refining.

Leaching platinum-group metals in a sulfuric acid/chloride ...

A leaching process was established based on the ability of platinum-group metals to form stable chloro-complexes in acidic chloride solutions.

Welcome to CDC stacks | High-temperature cyanide leaching ...

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Recovery of Platinum Group Metals from Spent Automotive ...

A special treatment of platinum group metals (PGMs) leaching from spent automotive catalyst is shown in this paper. Leaching of crushing and grinding automotive catalyst scrap in hydrochloric

THE PRIMARY PRODUCTION OF PLATINUM GROUP METALS (PGMs)

The six platinum group metals (PGMs) occur together in nature alongside nickel and copper. Mineable deposits of ... Leaching Tailings Smelting Leaching Concentrate Ore Slurry Furnace Matte Converter Matte Leach Solution Cu/Ni containing Ni/Cu/Co Sodium Sulphate Ammonium Sulphate Effluents

Platinum Group Metals Mining News and Commentary | …

Platinum Group Metals mining news. Explore related Platinum Group Metals articles for more information on the Platinum Group Metals mining industry.

A conceptual flowsheet for heap leaching of platinum group ...

A conceptual flowsheet for heap leaching of platinum group metals (PGMs) from a low-grade ore concentrate James M. Mwase 1, Jochen Petersen, J.J. Eksteen2 1. Department of Chemical Engineering, University of Cape Town, South Lane Road, Upper Campus,