The Pilanesburg Platinum Mines (PPM) operation in South Africa treats ore from an open pit and routinely suffers from low and erratic PGE flotation recoveries. This article investigates the effect of low-temperature alteration on the mineralogy and flotation performance of the PPM "silicate reef" ore.
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Platinum – Palladium Flotation Summary. A flotation method using mercaptobenzothiazole collector in an acid circuit was devised for preparing a platinum-palladium concentrate from Stillwater complex gabbro (Montana).
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Larger Scale Rougher Flotation Tests. In larger scale tests using the best conditions previously determined for the MBT-sulfuric acid flotation scheme, ore charges to the rougher flotation circuit were increased to 5,000 grams. The …
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About 80% of the worlds' reserves for platinum group metals (PGMs) are in South Africa's 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 …
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Provided is a method involving flotation of a feed of platinum group metal ore material to prepare a platinum group metal concentrate during mineral processing operations. Prior to and/or during the flotation, a lead-containing activator reagent and a xanthate collector reagent are added to the slurry and during the flotation, an oxygen-deficient flotation gas, such as nitrogen gas, is used.
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This test procedure is applicable to any ore to determine its flotation characteristics under chosen conditions. Eurus Mineral Consultants Laboratory Float Procedure for MF1/2 Rate Tests.. Update2 Jan 2012. ... (Written for Platinum ore tests – equally applicable to other ores which will utilise different reagents)
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Hence, non-conventional flotation reagent schemes were investigated in an attempt to improve the PGM rougher flotation recoveries from this ore sample. Flotation test work. Table V presents the best results obtained from the reagent dosage permutations tested. In all cases, each reagent was tested at two levels (high and low) resulting in eight ...
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The former can be classified into three types: gravity concentrate, flotation concentrate of primary platinum ore, flotation concentrate of copper sulfide and nickel ore in platinum metals. The latter mainly consists of four types: (1) Metals and alloy scraps, including a variety of scrap metals and alloy catalysts, precision alloy materials ...
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A series of laboratory experiments was conducted on a laboratory scale platinum froth flotation cell in an effort to determine the relationship between the platinum grade and a combined set …
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This study investigates the flotation kinetics of individual platinum-group elements (PGEs) and gold, namely Pt, Pd, and 2E+Au (i.e., Pt+Pd+Au), in the context of Platreef ore flotation.
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It can further assist in prediction of ore behaviour in flotation processes to improve efficiency (i.e. recovery and grade) and provide the opportunity to assess the effect of PGM species variability in the orebody on flotation performance. ... The effect of energy input on the flotation of a platinum ore in a pilot-scale oscillating grid ...
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Once extracted from the ground, the ore is crushed, milled and concentrated by flotation to recover the valuable platinum group elements (PGE) that are hosted either in discrete platinum group minerals (PGM) or in solid solution with the base metal sulfides (BMS), namely chalcopyrite, pentlandite, pyrrhotite and minor pyrite (e.g. solid ...
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In order to increase the recovery of PGMs by flotation, it is necessary to optimise the liberation of the key minerals in which the platinum group elements (PGEs) are contained which include sulphides, arsenides, …
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Batch flotation tests were conducted on a typical ore from the Merensky reef to investigate the role of dithiophosphate (DTP) and copper sulphate (CuSO4) addition on the flotation response of the ...
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In the present study the effect of adding sodium di-ethyldithiophosphate (DTP) to sodium isobutyl xanthate (SIBX) as a co-collector in the flotation of a platinum group mineral (PGM) ore was studied with a view to investigating whether there was any evidence of a synergistic beneficial effect resulting from the use of the mixture.
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A laboratory scale application of the attainable region technique on a platinum ore. G Danha, D Hildebrandt, D Glasser, C Bhondayi. Powder ... Measurement of a proxy for froth phase bubble sizes as a function of froth depth in flotation machines Part 1. Theoretical development and testing of a new technique. C Bhondayi, MH Moys. International ...
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Refining platinum ore is a costly and laborious process. It can take from eight weeks to six months to process a batch of ore, ... A platinum flotation circuit. In a process called flotation separation, air bubbles are blown through the mixture and carry platinum particles to the surface of the bath. The platinum-rich froth is skimmed from the ...
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The purpose of this paper is to provide a comparative high-level overview of aspects of the geological occurrence, mineralogy, and processing by flotation of the platinum group minerals (PGMs) found in each country.
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The beneficiation of platinum group metals (PGMs) from pristine (unweathered) sulfide ores has conventionally been conducted through froth flotation, which typically achieves …
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This chapter describes platinum-group ores and minerals and discusses how they are made into flotation concentrates enriched in platinum-group metals, different ores and their respective …
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In this study a fractional factorial design of laboratory experiments were conducted using platinum ore. The flowrate ... South Africa, August 2-4, 2010 The Relationship between Froth Image Features and Platinum Flotation Grade C. Marais. C. Aldrich* *Department of Process Engineering, University of Stellenbosch Private Bag X1, Matieland ...
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The present article critically discusses all the factors that affect the flotation of platinum group element bearing minerals, flotation routes, essential gaps, the problems …
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E. Morrice, "Pilot Mill Flotation of Anorthositic Platinum-Palladium Ore from the Stillwater Complex," U.S. BuMines RI 8763 (1983), 8 pp. Google Scholar E. Morrice, J.W. Walkiewicz and G. Casale, "Pilot Mill Flotation of Serpentinized Platinum-Palladium Ore from the Stillwater Complex," U.S. BuMines RI 8885 (1984), 11 pp.
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Flotation tailings from South Africa's platinum group minerals (PGM) represent complex polymetallic orebodies comprising a low-grade platinum group elements (PGE) …
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For iron ore flotation, different applications, such as anionic-anionic collectors, ... Bubble size measurements were conducted in an APBS MK4 Anglo Platinum Bubble Sizer apparatus connected to the flotation machine and under similar conditions of formation. For each test condition, 25–35 photographs were analyzed using the image ...
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International Journal of Mineral Processing, 2009. During the recovery of the valuable platinum group minerals and base metal sulphides in the Merensky Reef ore by flotation, a certain amount of naturally floatable gangue (NFG) is recovered, which dilutes the concentrate.
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This study investigates the effect of energy/power input on the flotation of a platinum ore in a pilot-scale oscillating grid flotation cell. Oscillating grids generate near ideal …
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Russia and South Africa are the world's leading producers of platinum group elements (PGEs). This places them in a unique position regarding the supply of these two key industrial commodities. The purpose of this paper …
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The ore was prepared for flotation by milling to 85% passing 75 μm with approximately 45% passing 25 μm. Batch flotation tests were carried out in a 3 l modified Leeds flotation cell using synthetic plant water, the composition of which has been described elsewhere (Shackleton et al., 2003). Although various xanthates and dithiophosphates ...
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This article critically discusses the factors affecting the flotation of platinum group element bearing minerals, including flotation routes, essential gaps, problems associated with their processing, …
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The 2.05-Ga Bushveld Complex in South Africa, host to many lucrative ore deposits (e.g. platinum group elements (PGE)), is surprisingly pristine and unaltered, given its geological age.
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This study investigates the flotation kinetics of individual platinum-group elements (PGEs) and gold, namely Pt, Pd, and 2E+Au (i.e., Pt+Pd+Au), in the context of Platreef ore flotation. Experimental tests were conducted on a Platreef ore feed using various dosages of depressants, frothers, and collectors under controlled agitation and pH ...
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A summary of some of the major challenges faced in each country in terms of the concentration of the ores by flotation is presented alongside the opportunities that exist to increase the production of the respective metals. ... 7—covers of West Siberian and Russian platforms, 8—black shale strata at middle massifs; 9–14—platinum-bearing ...
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A series of batch flotation tests was done at the University of Stellenbosch in South Africa on a 4.5 l Barker laboratory flotation cell equipped with a fixed rotor and aerator unit. The ore used was UG2 from Rustenburg provided by Anglo Platinum. …
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