platinum group ore grinding

Platinum Group Ore Grinding

us4337226a - recovery of platinum-group metals from ores,metal values are recovered from ore concentrates by means of dry grinding, followed by a two-stage leaching process in which the ground concentrate is first leached with sulfuric acid at a temperature of about 90° to 100° c. to selectively leach nickel and iron. the residue is then leached with a solution comprising sulfuric acid and naocl or h 2 o 2 to extract platinum, palladium, copper.

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PGM Ore Processing at Impala's UG-2 Concentrator

PGM Ore Processing At Impala's UG-2 Concentrator

(platinum group minerals) in the ug-2 plant feed, the remainder largely being alloys of iron, lead, arsenic and antimony, or tellurides. as is typical of such ores, ug-2 platinum group mineralisation is highly complex. from the metallurgical perspective, however, pgm speciation is a minor issue as it tends not to dictate floatability.,development of pgms and chrome extraction circuit from ug,ore to be associated with the metal sulphides and the matrix occurrence is either within or at the metal-gangue grain boundaries [4]. during the grinding process, about 50% of the pgms are liberated. ug2 platinum grades range between 3 and 8 g/t [5]. pgms have extraordinary physical and chemical properties that have made them indispensable to the modern industrial world.

Ore processing | TESCAN

Ore Processing | TESCAN

ore processing. ore processing or extractive metallurgy is an integral part of the mining industry. it is focused on extracting metals from their natural ores. ore characterization using mineralogy is of crucial importance in all branches of mineral processing.,metal ore mining in europe - mineral processing,this mine incorporates the ore seams of suuri and roura, which were put into open-pit operation in 2008 and 2010, respectively. in 2012, operations were completely converted to underground mining. the mine was expanded in 2014 to 4500 t/d of ore, and by 2021 a further 25 % capacity expansion is planned with a roughly 1050 m deep shaft.

IsaMill - Wikipedia

IsaMill - Wikipedia

the isamill is an energy-efficient mineral industry grinding mill that was jointly developed in the 1990s by mount isa mines limited and netzsch feinmahltechnik, a german manufacturer of bead mills. the isamill is primarily known for its ultrafine grinding applications in the mining industry, but is also being used as a more efficient means of coarse grinding. by the end of 2008, over 70% of the isamill’s installed capacity was for conventional regrinding or mainstream grinding,leaching and recovery of platinum group metals from ug-2,existing processes for the recovery of platinum group metals (pgm) from ug-2 ores place stringent requirements with regard to chromite content (about 2.8 per cent) upon feed material to the plant. the conventional process sequence involves: smelting of a flotation concentrate to remove gangue material and to produce an iron-nickel-copper-pgm matte

Ray Grimmer Lab Service

Ray Grimmer Lab Service

through a combination of grinding, roasting, tableing, & leaching of your submitted material, through our environmentally friendly process, whether it be sulfide, tellurides, free milling , placer concentrates, or raw unprocessed ore, we can inform you as to the feasibility of values in your concentrates for further action on your part.,process mineralogy - jkmrc monograph series in mining and,chapter 25 - increasing platinum recovery by fine grinding chapter 26 - silver mineralogy and metallurgy of lead-zinc-silver deposits at mount isa chapter 27 - carlin trend ore characteristics and processing chapter 28 - leaching in the platinum group metals industry chapter 29 - the smelting of platinum group element concentrates

Beneficiation and Extractive Metallurgy of

Beneficiation And Extractive Metallurgy Of

the six platinum-group elements (pge): ruthenium, rhodium, palladium, osmium, iridium and platinum, together group ore types. figure 1 depicts the “family tree” of pge ores as defined liberation during the grinding process. in general, the liberation size is fairly coarse,characterizing the behaviour of platinum group minerals in,a protocol for predicting gravity recovery of platinum group minerals (pgms) in grinding circuits is being developed based on that for gravity-recoverable gold (grg) (laplante et al., 1990, banisi et al., 1991, laplante et al., 1995, putz et al., 1993, woodcock, 1994, noaparast, 1996, xiao, 2001). the protocol integrates three data sets: gravity-recoverable platinum group minerals (grpgm) in a stream, the behaviour of the pgms in the grinding

pH Control in Flotation of PGM Platinum Group Metal Ores

PH Control In Flotation Of PGM Platinum Group Metal Ores

in the case of platreef ores, there may be a case for some alkaline addition. at the end of the day, most ores are generally alkaline upon grinding and the recovery of the small quantities of sulfides is also being targeted, particularly nickel. so an alkaline environment is preferred which occurs naturally without the addition of any alkalies.,pilot mill flotation of serpentinized platinum-palladium,and magnetite. the platinum-palladium mineralization was associated with the sulfides which made up about 1 pct of the rock. microscopic examination of screened fractions of crushed ore showed that most of the sulfides could be liber­ ated at 200 mesh. the bond index (5) value for grinding the ore to

On the Management of Gangue Minerals in the Flotation of

On The Management Of Gangue Minerals In The Flotation Of

it is also well known that entrainment decreases with increasing particle size and hence, fine grinding which is widely used in the processing of pgm ores will exacerbate the problem of managing chromite entrainment. recently, it has been observed that the entrainment of chromite is not only affected by the size and mass of the particles but also their shape with significant entrainment,treatment of platinum flotation products | johnson matthey,effect of sinter grinding on platinum group metals recoveries into solution (220 g l −1 hcl, l : s ratio = 2, chlorination time = 2 hours) particle size analysis of the final chlorination cakes showed that the size distribution of the platinum metals is in proportion to the size yields.

EFFECTS OF RE-ROUTING OF CONCENTRATE STREAMS IN THE

EFFECTS OF RE-ROUTING OF CONCENTRATE STREAMS IN THE

the lower group 6 (lg6) platinum group of metals (pgm) ore was subjected to batch and continuous industrial froth flotation with and without concentrate streams re-routing. the batch test indicated that the ore has a recovery of about 69%.however, the average pgm recovery before and after rougher stage re-,17 - flotation of gold ores,magmatic gold occurs as an alloy with copper, nickel and platinum group metals. typically contains low amount of gold ores in clastic placer deposits, in general conglomerates, which contain quartz, sericite, sedimentary rock chlorite, tourmaline and sometimes rutile and graphite. gold can be coarse. some deposits contain up to 3% pyrite.

Determination of the milling parameters of a platinum

Determination Of The Milling Parameters Of A Platinum

to this end, three mono-size classes feeds 850–600 μm, 600–425 μm and 425–300 μm of a platinum ore were ground using three different ball sizes (10, 20 and 30 mm) in a laboratory mill for the grinding times 0.5, 1, 2, 4, 8, 15 and 30 min. the data collected was used to determine breakage and some of the selection function parameters.,sustainability reporting and the platinum group metals:a,the mining of pgm ores is through conventional underground or open cut techniques. the next stage is grinding and gravity-based separation, followed by fl otation to produce a pgm-rich concentrate. the run-of-mine ore grades are typically several grams per tonne (g t–1), while concentrates are some 100s of g t –1 (1). concentrate is then smelted to produce a pgm-

Mill (grinding) - Wikipedia

Mill (grinding) - Wikipedia

a mill is a device that breaks solid materials into smaller pieces by grinding, crushing, or cutting. such comminution is an important unit operation in many processes. there are many different types of mills and many types of materials processed in them. historically mills were powered by hand or by animals, working animal, wind or water. in modern era, they are usually powered by electricity. the grinding of,platinum group ore refiners - binq mining,grinding mill; quarry mining; ore crusher; about; binq mining > mining news > platinum group ore refiners; print. platinum group ore refiners. posted at:december 2, 2012[ 4.9 - 3585 ratings] refining of platinum group metals ore concentrate. most sophisticated industrial inorganic chemistry:

Grinding technology offers an alternative to ball milling

Grinding Technology Offers An Alternative To Ball Milling

the mill feed is platinum-group metals-bearing platreef ore with a variable and complex mineralogical character, and is also a hard and abrasive ore with a,grinding technology offers an alternative to ball milling,the mill feed is platinum-group metals-bearing platreef ore with a variable and complex mineralogical character, and is also a hard and abrasive ore with a

Recovery of platinum-group metals from ores - The United

Recovery Of Platinum-group Metals From Ores - The United

1. a process for recovery of nickel, iron, platinum, palladium, copper and gold values from ore concentrates consisting essentially of (a) smelting the concentrate with a flux to form a matte and slag; (b) dry grinding the matte to a particle size suitable for leaching;,refining approaches in the platinum group metal processing,simplified platinum group metal (pgm) processing chain (conventional matte smelting treatment). 4e = pt, pd, rh, and au. adapted from ndlovu [11] and cramer [13]. the four major pgm mining companies, namely anglo platinum, norilsk, impala platinum, and lonmin platinum, all south african apart from the russian norilsk, are integrated from mining to

EFFECT OF USING DIFFERENT GRINDING MEDIA ON THE …

EFFECT OF USING DIFFERENT GRINDING MEDIA ON THE …

the ug2 chromitite ore body is a complex, highly disseminated platinum containing ore from the bushveld complex in south africa, with typical platinum group mineral (pgm) grain sizes below 15 μm. a detailed survey of global platinum group element (pge) resources in 2010 reported that 70.9% of the,effect of different grinding media composition on the,ug2 chromitite ore is a complex, highly disseminated platinum ore from the bushveld complex in south africa, with typical platinum group metal (pgm) grain sizes below 15 μm. a detailed survey of global pgm resources in 2010 reported that 70.9% of the world’s pgm resources are within the bushveld complex, of which ug2 ore contributes about 60

of Platinum Group Minerals (PGMs)

Of Platinum Group Minerals (PGMs)

pyrite, and cubanite. the primary platinum group minerals (pgm) in the merensky reef are cooperite (pts), braggite ((pt,pd)nis), sperrylite (ptas 2), and pge alloys. while min-erals such as laurite (rus 2) can also be abundant. typical pge grades in the merensky reef are about 3 8 g/t [15,16].,overview of pgm processing - anglo american platinum,platinum platinum group metals (pgms) are recovered through underground and open pit mining from poly-metallic sulphide ores containing pgms, nickel, copper and other metals: • platinum (pt), palladium (pd), rhodium (rh) and ruthenium (ru) are the most prevalent of the six pgms,

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