pgm flotation

(pdf) trithiocarbonates for pgm flotation | professor john

In bulk PGM flotation, the collectors of choice for work illustrated the importance of collector functional group many years have been dithiocarbonates (DTC), better known as well as the importance of collector hydrocarbon chain as xanthates, and dithiophosphates (DTP) (Grobler et

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potential processing routes for recoveryof platinum group

Nov 06, 2017 The beneficiation of platinum group metals (PGMs) from pristine (unweathered) sulfide ores has conventionally been conducted through froth flotation, which typically achieves platinum recoveries of over 85%. The achieved successes of PGM concentration by flotation from the pristine sulfide ores are largely due to the occurrence of PGMs in close association with base metal sulfide

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treatment of platinumflotationproducts | johnson matthey

A flowsheet has been developed for the production of rich concentrates of precious and non-ferrous metals by a complex treatment of the flotation products from South African platinum-containing chrome ores. The procedure involves: autoclave leaching, roasting, hydrochlorination and precious metal recovery by sorption. Autoclave oxidative leaching of the initial material allows the non-ferrous

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froth flotation-wikipedia

Froth flotation is a process for selectively separating hydrophobic materials from hydrophilic.This is used in mineral processing, paper recycling and waste-water treatment industries. Historically this was first used in the mining industry, where it was one of the great enabling technologies of the 20th century

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ph control in flotation of pgm platinum group metal ores

Native metals and most of the PGM minerals float over a range of pHs, so a lower flotation pH would be acceptable. Well I guess basically says that a lower pH should be OK for good flotation

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treating chrome tailings for pgms

Aug 19, 2008 Then follows a conventional flotation stage, where the banks totalling 20 rougher cells achieve typically a 32% PGM recovery. This is followed by flotation banks comprising 10 cleaner and five recleaner cells that take the concentrate recovery level of about 44% of the contained PGMs

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extraction ofplatinum group metals| intechopen

Oct 02, 2017 About 80% of the worlds reserves for platinum group metals (PGMs) are in South Africas Bushveld Igneous Complex. Processing of PGM involves comminution, flotation, smelting, converting, base metals refinery and precious metals refinery. Due to increasing chrome content in the feed and the challenges associated with operating high chrome feed, alternative routes to smelting of PGM are

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handbook of flotation reagents: chemistry, theory and

Sep 01, 1991 Description. Handbook of Flotation Reagents: Chemistry, Theory and Practice: Flotation of Gold, PGM and Oxide Minerals, Volume 2 focuses on the theory, practice, and chemistry of flotation of gold, platinum group minerals (PGMs), and the major oxide minerals, along with rare earths. It examines separation methods whose effectiveness is limited

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minerals | free full-text | challenges related to the

Since PGM flotation requires that particles are ground very fine in order to liberate them, particularly in the secondary circuit, entrainment is problematic in PGM flotation. Particles feeding the secondary roughers may be anywhere between 40% to 80% less than 50 m

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