pgm ore grinding parameters feed size and output size

pgm ore grinding parameters feed size and output size

PGM Ore Processing at Impala's UG-2 Concentrator

However, largely, the PGM are finely disseminated, the average grain size being about 10 microns, so that grain size, liberation and association tend to dictate mineral floatability. Platinum group mineral grain size and association can be split into four categories: • Coarse PGM (roughly 5% of all PGE) • PGM associated with base metal and

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The PGM flotation predictor: Predicting PGM ore

2015-5-18  The PGM flotation predictor: Predicting PGM ore flotation performance using ... grain and particle size, and PGM mode of occurrence for each PGM-bearing particle are used to produce a ... ple, feed sample output focuses more on potential recovery and

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Direct leach approaches to Platinum Group Metal (PGM)

2015-7-1  Platinum group metals are conventionally recovered from high-grade concentrates (typically assay of 200 to over 2000 g/t PGM with 0.4–2.8% Cr 2 O 3) by the traditional matte–smelting–refining technique depicted in Fig. 2 (Cole and Joe Ferron, 2002).Ore is first ground by conventional multistage crushing and ball milling, or by semi-autogenous grinding (SAG), and then smelted.

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Particle size distribution of the flotation feed for the ...

Download scientific diagram Particle size distribution of the flotation feed for the (a) Merensky and (b) UG2 platinum ores. from publication: Effects of high pressure grinding rolls on platinum ...

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Analysis of the Effects of Grind Size on Production of ...

2015-7-17  standards and grind size is one of the parameter. The purpose of this research project was to analyze the effect of grind size on concentrate production at a mining company in Zambia. The researcher set objectives which were to determine the current grind size and the output

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Investigation on Iron Ore Grinding based on Particle Size ...

2020-5-28  The feed samples of X, Y, and Z iron ores were ground in the BBM (ball mill refers to a BBM of size 300 mm × 300 mm with smooth liners) to identify the PSD, BWI, and RT of each ore. Grinding experiments were conducted according to Bond’s standard test procedure [].For each iron ore sample, the RT taken to produce 250% circulating load in the BBM was measured by a new method.

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Optimization of mill performance by using

2015-4-16  The pulp density is an important parameter which influences the grinding efficiency. In iron ore, for instance, a variation of 2 to 3% solid content in the slurry could lead to a difference up to 10% on the energy (kWh/T) for a similar grind. Optimization of mill performance by using online ball and pulp measurements J o u r n a l P a p e r

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Cyclones Don’t Do Any Grinding - Blog - Orway Mineral ...

2017-10-10  The answer is the cyclones shouldn’t be used to try and control grind. The major factors that influence the grind-size are the feed PSD, ore characteristics (both the coarse breakage (Axb/DWi/WS AG etc), and fine grinding (BWi) parameters), grinding power, grinding

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[PDF] ISAMILL FINE GRINDING TECHNOLOGY AND ITS

Tough economical conditions and high grade but fine-grained ore processing have forced the mining industry to look for more efficient processes. IsaMill Technology for ultra-fine and fine grinding is one such process employed at several mining operations in Australia including Mount Isa Mines Limited in Australia. Mount Isa Mines is a business unit of MIM Holdings Limited. MIM is an Australian ...

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VertiMill Sizing Example - Mineral Processing

2016-1-8  VertiMill Sizing Example. This was a case study for an expansion of a 2200 TPD SAG Mill operation. The client wanted to increase the plant to 2700 TPD @ 30um. Some plant samples were taken, work indexes obtained and data simulated. As it

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Direct leach approaches to Platinum Group Metal (PGM)

2015-7-1  Platinum group metals are conventionally recovered from high-grade concentrates (typically assay of 200 to over 2000 g/t PGM with 0.4–2.8% Cr 2 O 3) by the traditional matte–smelting–refining technique depicted in Fig. 2 (Cole and Joe Ferron, 2002).Ore is first ground by conventional multistage crushing and ball milling, or by semi-autogenous grinding (SAG), and then smelted.

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Water Quality in PGM Ore Flotation: The effect of Ionic ...

2017-6-19  active effect of ionic strength and pH on the floatability of a PGM containing ore with a keen focus on the depression of gangue as well as froth stability. Methods 1 kg ore samples were milled at 66% solids in synthetic plant water for 15 minutes in order to obtain a grind of 60% passing 75µm. The milled slurry was transferred into a 3L

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Effect of ball and feed particle size distribution on the ...

Silica ore was used as the test material. The experimental parameters that were kept constant in this investigation was the grinding media filling, powder filling and the mill rotational speed. ... This analysis technique showed that the required product fineness is a function of grinding media and feed material size distributions. It was also ...

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Cyclones Don’t Do Any Grinding - Blog - Orway Mineral ...

2017-10-10  The answer is the cyclones shouldn’t be used to try and control grind. The major factors that influence the grind-size are the feed PSD, ore characteristics (both the coarse breakage (Axb/DWi/WS AG etc), and fine grinding (BWi) parameters), grinding power, grinding

Read More
Optimization of mill performance by using

2015-4-16  The pulp density is an important parameter which influences the grinding efficiency. In iron ore, for instance, a variation of 2 to 3% solid content in the slurry could lead to a difference up to 10% on the energy (kWh/T) for a similar grind. Optimization of mill performance by using online ball and pulp measurements J o u r n a l P a p e r

Read More
Monitoring grinding parameters by signal measurements

To apply these source signals to monitoring of grinding parameters, industrial scale grinding tests were performed with an iron ore at LKAB, Malmberget. Three operating parameters were considered: the feed rate, the mill feed size and the pulp density of mill discharge. The measured response parameters were the ground product size, the power ...

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CERAMIC MATERIALS I - Mu

2013-12-3  During grinding (usually in water), the ore is ground from a maximum 20 mm diameter down to about 0.3 mm or less The comminution process remains inherently inefficient. 85% of the energy used is dissipated as heat, 12% is attributed to mechanical losses and only 1% of the total energy input is used in size reduction of feed material.

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Influence of variations in feed ore characteristics on ...

Variations in feed ore properties will therefore affect the grinding charge and thus, the resulting ground product will vary. From a size distribution point of view, the optimum mill performance is achieved when there is a balance between coarse and fine particles in the feed, i.e., the size and amount of large particles have to be enough to ...

Read More
[PDF] ISAMILL FINE GRINDING TECHNOLOGY AND ITS

Tough economical conditions and high grade but fine-grained ore processing have forced the mining industry to look for more efficient processes. IsaMill Technology for ultra-fine and fine grinding is one such process employed at several mining operations in Australia including Mount Isa Mines Limited in Australia. Mount Isa Mines is a business unit of MIM Holdings Limited. MIM is an Australian ...

Read More
2018article.pdf - See discussions stats and author ...

experimental parameters that were kept constant in this investigation was the grinding media filling, powder filling and the mill rotational speed. The data obtained from these batch tests was then analyzed using a model free technique called the Attainable Region method. This analysis technique showed that the required product fineness is a function of grinding media and feed material size ...

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Ball size distribution for the maximum production of a ...

2015-11-1  Some of the breakage and selection function parameters of the PGM ore was measured at the University of the Witwatersrand, using a one-size fraction method developed by Austin et al. .The laboratory mill used has the diameter of 0.302 m, length of 0.282 m, eight liners with dimensions of height (h) of 13 mm, width (w) of 25 mm and length (l) of 272 mm.

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A MATHEMATICAL STUDY OF PARTICLE-SIZE

2020-4-2  Size-distribution Data for the Grinding Feed of Porphyry-copper Ore ..... 65 7. Size-distribution Data for the Grinding Product ... output particle weight distribution in an open loop grinding circuit ... particle size and having two adjustable parameters was assumed for

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Effect of ball and feed particle size distribution on the ...

Silica ore was used as the test material. The experimental parameters that were kept constant in this investigation was the grinding media filling, powder filling and the mill rotational speed. ... This analysis technique showed that the required product fineness is a function of grinding media and feed material size distributions. It was also ...

Read More
Water Quality in PGM Ore Flotation: The effect of Ionic ...

2017-6-19  active effect of ionic strength and pH on the floatability of a PGM containing ore with a keen focus on the depression of gangue as well as froth stability. Methods 1 kg ore samples were milled at 66% solids in synthetic plant water for 15 minutes in order to obtain a grind of 60% passing 75µm. The milled slurry was transferred into a 3L

Read More
Influence of variations in feed ore characteristics on ...

Variations in feed ore properties will therefore affect the grinding charge and thus, the resulting ground product will vary. From a size distribution point of view, the optimum mill performance is achieved when there is a balance between coarse and fine particles in the feed, i.e., the size and amount of large particles have to be enough to ...

Read More
Optimization of mill performance by using

2015-4-16  The pulp density is an important parameter which influences the grinding efficiency. In iron ore, for instance, a variation of 2 to 3% solid content in the slurry could lead to a difference up to 10% on the energy (kWh/T) for a similar grind. Optimization of mill performance by using online ball and pulp measurements J o u r n a l P a p e r

Read More
PLATSOL™ Process Provides a Viable Alternative to

parameters that influence precious metal recovery are the particle size of the feed to the autoclave, which should be optimized for each application, and the free acid concentration of the autoclave discharge (ideally 10 to 50 g/l H 2 SO 4). PROCESS ORIGINS The PlatsolTM process was developed to treat low-grade Cu, NI, PGM ore fom

Read More
CERAMIC MATERIALS I - Mu

2013-12-3  During grinding (usually in water), the ore is ground from a maximum 20 mm diameter down to about 0.3 mm or less The comminution process remains inherently inefficient. 85% of the energy used is dissipated as heat, 12% is attributed to mechanical losses and only 1% of the total energy input is used in size reduction of feed material.

Read More
Dry grinding process for reducing ore to pelletizable ...

1. A process for dry grinding ore to produce pelletizable particles which comprises the steps of: a. grinding ore in a size-reducing unit; b. classifying the ground ore in a centrifugal pneumatic separator into a coarse fraction and a fine fraction, said centrifugal pneumatic separator having a

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2018article.pdf - See discussions stats and author ...

experimental parameters that were kept constant in this investigation was the grinding media filling, powder filling and the mill rotational speed. The data obtained from these batch tests was then analyzed using a model free technique called the Attainable Region method. This analysis technique showed that the required product fineness is a function of grinding media and feed material size ...

Read More