Particle flow modeling of dry induced roll magnetic separator

Singh, Veerendra; Nag, Samik; Tripathy, Sunil Kumar

doi:10.1016/j.powtec.2013.03.053

Cited by 28 publications

(9 citation statements)

References 11 publications

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“…Tripathy et al 2014). Particle shape factor may also have played a role here, as modelled by Singh et al (2013). To contrast this, Fe oxide-rich particles with relatively lower microporosity will be subjected to relatively higher centrifugal forces and may not be captured by the 'magnetic force' in tests using higher rotor speeds and feed rates.…”

Section: Discussionmentioning

confidence: 99%

“…The IRMS process has previously been utilised in India to upgrade the Cr:Fe ratio of chromite ore, to upgrade mineral sand ore (e.g. ilmenite and rutile) and to upgrade ferromanganese ore, as well as hematitic iron ore fines (Naik 2002; Singh et al 2011, 2013; Tripathy et al 2012, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…Using an Iso-Dynamic Separator, Singh et al (2013) determined that the mass magnetic susceptibility of manganese (from ferromanganese ore – 40% Mn and 16% Fe – N.B. mineralogy not specified) was lower than that of ilmenite and an order of magnitude lower than that of magnetite (ferromagnetic) for −150 µm sized samples.…”

Section: Introductionmentioning

confidence: 99%

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Demonstration of Dry Magnetic Separation to Upgrade the Mn:Fe Ratio of a Ferromanganese Ore Sample

Peterson

Karadkal

Nunna

et al. 2023

Mineral Processing and Extractive Metallurgy: Transactions of t

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Sighter Induced Roll Magnetic Separation tests were conducted on a ferromanganese ore sample to determine the potential to significantly upgrade the Mn content and Mn:Fe ratio. The sample had a Mn:Fe ratio of 1.3 and was comprised of hematite, cryptomelane, pyrolusite, quartz, goethite and braunite. Tests at 4.7, 2.3 and 1 mm top sizes revealed better separation of Fe from Mn at the 2.3 and 1 mm top sizes. This reflected the better liberation and separation characteristics of Fe oxides at 2.3 mm and both Fe and Mn oxides at 1 mm. A test on the −2.3 + 0.6 mm size fraction improved the Mn:Fe ratio to 4.6, the Mn content to 41.5 wt% with 69.4% mass recovery and 84.2% Mn recovery. Particle magnetic susceptibility was influenced by particle microporosity, and its effect on apparent density, resulting in some Mn oxides reporting to the magnetic concentrate and Fe oxides to the tails.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Demonstration of Dry Magnetic Separation to Upgrade the Mn:Fe Ratio of a Ferromanganese Ore Sample

Peterson

Karadkal

Nunna

et al. 2023

Mineral Processing and Extractive Metallurgy: Transactions of t

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“…The selectivity is defined as the ability to separate one certain kind of magnetic particles from all others, independently of how close their magnetic susceptibilities may be [25]. material characteristics and the design features of equipment along with the optimization of process variables [27].…”

Section: Magnetic Separationmentioning

confidence: 99%

Mining and Beneficiation of Phosphate Ore

Ptáček¹

2016

Apatites and Their Synthetic Analogues - Synthesis, Structure, Properties and Applications

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The first commercial production of phosphate rock began in England in 1847. A wide variety of techniques and equipment is used to mine and process phosphate rocks in order to beneficiate low-grade ores and remove impurities. The eighth chapter of this book deals with mining and beneficiation of phosphate ore. The principle and operating conditions of important parts of manufacturing process including separation, classification, removing of carbonates, calcination and flotation was described. The chapter ends with description of techniques used for extraction of rare earth element. phosphates are very similar. The separation by physical means becomes even impossible when the carbonate minerals are finely disseminated into the phosphate particles. KeywordsAn alternative technique for the beneficiation of these ores is the calcination. Calcination is the process of heating the ore to a high temperature ranging from 800 to 1000°C to decompose CaCO 3 and MgCO 3 to CaO, MgO and gaseous CO 2 . The CaO and MgO formed are then removed as hydroxides by quenching the calcined product in water and washing. The most common chemical reagent used to enhance the removal of calcium and magnesium hydroxides is ammonium chloride.Chemical dissolution of carbonate minerals (calcite and dolomite) from calcareous phosphate ores, without the calcination, using organic acids also proved to be capable of beneficiating the calcareous phosphate ores on the laboratory scale.4. Phosphate ores associated with organic matter (black or brown phosphates): ores of this type are generally beneficiated by heating the ore up to about 800°C. This type of calcination burns organic material and residual organic carbon without significantly affecting the superior qualities of sedimentary phosphates such as the solubility and reactivity.Furthermore, as a result of low calcination temperature, the reduction of calcium sulfate, present in ore, to corrosive calcium sulfide by the organic matter is minimized. During the burning of organic matter, the following two conditions must be kept: organic carbon must be decreased to less than 0.3% to minimize the gassing in the wet phosphoric acid processing, and apatite CO 2 must be maintained at a level close to 2% to allow good reactivity of calcined product.5. Phosphate ores containing more than one type of gangue minerals: many sedimentary phosphate deposits contain mixtures of undesired constituents. These ores require a series of beneficiating operations during their processing depending on the type of gangue minerals present in each ore. This may include, after the size reduction, the combination of attrition scrubbing, desliming, flotation, gravity separation and/or calcination. Each flow sheet is to be designed after thorough characterization and testing of a representative sample of the exploited ore.Igneous and metamorphic phosphate ores: the main gangue materials in these ores are sulfides, magnetite, carbonates (calcite, dolomite, siderite and ankerite), nepheline syenite, pyroxenite, foskorite,...

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“…The drum magnetic separator is widely used in the separation of magnetic minerals [1][2][3][4], but its effect of separating fine materials under dry conditions is poor [5][6][7], mainly due to the poor fluidity and the strong interaction between particles [8][9][10]. In this case, only relying on gravity and the centrifugal force of the drum is not enough to effectively separate fine materials [11].…”

Section: Introductionmentioning

confidence: 99%

Multiphysics Modeling Simulation and Optimization of Aerodynamic Drum Magnetic Separator

Xue

Dong

et al. 2021

Minerals

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Aerodynamic Drum Magnetic Separator (ADMS) uses an adjustable air flow to enhance the separation of magnetic particles from gangue. In order to explore the matching relationship between the magnetic field, the flow field, and the gravity field, as well as the capture and separation behavior of particles under the action of multi-physics, a related simulation model is established using the finite element software COMSOL Multiphysics and the accuracy of the simulation results is verified by measurement, formula calculation, and magnetic separation experiment. The trajectories and capture probabilities of particles in different magnetic fields and flow fields are calculated, as well as the critical airflow velocity corresponding to a specific capture probability. In addition, the magnetic field characteristics and particle capture effect of N-S alternate arrangement and N-N homopolar arrangement are compared by optimizing the permutation of magnetic poles. This model may provide a reference for the accurate control of magnetic separation enhanced by a coupling force field.

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Particle flow modeling of dry induced roll magnetic separator

Cited by 28 publications

References 11 publications

Demonstration of Dry Magnetic Separation to Upgrade the Mn:Fe Ratio of a Ferromanganese Ore Sample

Demonstration of Dry Magnetic Separation to Upgrade the Mn:Fe Ratio of a Ferromanganese Ore Sample

Mining and Beneficiation of Phosphate Ore

Multiphysics Modeling Simulation and Optimization of Aerodynamic Drum Magnetic Separator

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