A Novel Pneumatic Planar Magnetic Separator for Magnetite Beneficiation: A Focus on Flowsheet Configuration

Baawuah, Emmanuel; Kelsey, Christopher; Addai‐Mensah, Jonas; Skinner, William

doi:10.3390/min10090759

Cited by 5 publications

(3 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Currently, magnetic grading is mainly applied to ore element classification [17][18][19] , where ore grading is accomplished according to magnetic content of the particle powder in the ore. Moreover, the ore powder magnetic separator is divided into wet and dry separators [20][21][22] .…”

Section: Introductionmentioning

confidence: 99%

Development of the magnetic separation device for surface cracks of delinted cottonseed

Du,

Wang,

Pang

et al. 2023

International Journal of Agricultural and Biological Engineering

View full text Add to dashboard Cite

In seed processing for commercial production, the collision or friction between mechanical parts and seed is inevitable. These collisions or friction can cause cracks on the surface of the seed, which can affect germination rates and ultimately reduce crop yields. Using the difference of the seed motion trajectories with different crack degrees in the magnetic field, the grading of the surface crack seed can be realized. In this study, the motion law of seed in a non-uniform magnetic field was analyzed by taking the delinted cottonseed as an object. A magnetic separation device for crop seeds was developed. This device was essentially composed of the feed throat, magnetic roller, conveyor belt, and variable-frequency adjustablespeed motor. The magnetic powder adhering seeds enter the magnetic separation device through the feed throat and are conveyed to the magnetic roller through the conveyor belt. The magnetic roller has different adsorption forces on seeds with different degrees of cracking, and seeds fall into different outlets, thus completing the grading of the seeds. By adjusting working parameters such as the magnetic field strength and the speed of the conveyor belt, magnetic separation could be made. In order to verify the grading effect, the magnetic separation accuracy was taken as the inspection index, the magnetic powder's mesh number, the mass mixing ratio between magnetic powder and delinted cottonseed, and the rotation speed of the magnetic roller were taken as the inspection factors. The response surface methodology was used to optimize the working parameters of the experimental device. The results showed that the optimal process parameters of the magnetic separation device were as follows: the number of magnetic powder meshes was 250, the mass mixing ratio between magnetic powder and delinted cottonseed was 1:20, and when the rotational speed of the magnetic separation roller was 20 r/min, the detection rate reached 92.5%. The designed magnetic separation device can realize the non-destructive batch detection of seed surface cracks with high work efficiency and has guiding significance for the high-precision and low-damage classification detection and classification of commercial seed.

show abstract

Section: Introductionmentioning

confidence: 99%

Development of the magnetic separation device for surface cracks of delinted cottonseed

Du,

Wang,

Pang

et al. 2023

International Journal of Agricultural and Biological Engineering

View full text Add to dashboard Cite

show abstract

“…Weakly magnetic mineral resources are characterized by low grade usable minerals, nonuniform embedded particle size, and complicated co-and association of minerals with various specific magnetism coefficients [1][2][3]. Pre-concentration equipment should be able to handle a wide particle size feed and simultaneous pre-concentration of minerals with varying specific magnetization coefficients in order to achieve high efficiency and low cost pre-concentration of these minerals [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Separation Analysis of New Magnetic Separator for Pre-Concentration of Ilmenite Particles

Han

Cheng

2022

Minerals

View full text Add to dashboard Cite

To achieve the utilization of fine ilmenite (especially −0.075 mm) produced in the titanium-magnetite processing plant in Panzhihua, a radial turbulent outer-cylinder magnetic separator (RTOCMS), was developed in this study. After optimizing the conditions of rotation speed and water flow, an RTOCMS concentrate with TiO2 grade of 22.84% and TiO2 recovery of 66.93% was obtained through one-stage roughing pre-concentration flowsheet. Magnetic force and competing forces were calculated and analyzed to illustrate the pre-concentration mechanism, and the results revealed that the combination of high water flow and high rotation speed resulted in the most effective for pre-concentration of the fine ilmenite in the RTOCMS process. In addition, particle size analysis of the concentrate product indicated that the RTOCMS was effective for the recovery of medium particle sizes (−0.075+0.038 mm), with a continued enhancement for the recovery of fine-grained products (−0.038 mm). Hence, the RTOCMS provides an effective way to pre-concentrate fine ilmenite ore.

show abstract

“…However, no significant breakthrough has been introduced for the dry processing of magnetite ores, i.e., dry comminution through to dry magnetic separation. In our previous studies, we investigated the performance of a novel superfine crusher (SFC) [15] and a pneumatic planar magnetic separator (PMS) [16,17] as dry comminution and magnetic separation technologies, respectively, for processing fine-grained magnetite ores.…”

Section: Introductionmentioning

confidence: 99%

Economic and Socio-Environmental Benefits of Dry Beneficiation of Magnetite Ores

Baawuah

Kelsey²,

Addai‐Mensah

et al. 2020

Minerals

Self Cite

View full text Add to dashboard Cite

In our previous studies, we demonstrated the performance of novel superfine crusher and pneumatic planar magnetic separator as energy-efficient technologies for dry processing of magnetite ores. The present study investigates the economic and socio-environmental benefits of applying these technologies in conceptual dry magnetite ore processing flowsheet. The outcome of the study is compared with that of a conceptual wet processing flowsheet for the same ore. The cost estimations used are based on the Brook Hunt C1 methodology whilst revenue estimations are based on the Platts Iron Ore Index specification. The demonstrated economic and socio-environmental benefits show that dry processing flowsheet offers significant energy and cost savings and improved revenue generation compared with the wet process flowsheet. These findings are vital to the magnetite industry, particularly in water- and energy-scarce regions as a benchmark for future studies aimed at deepening and expanding the knowledge base of dry beneficiation of magnetite ores.

show abstract

A Novel Pneumatic Planar Magnetic Separator for Magnetite Beneficiation: A Focus on Flowsheet Configuration

Cited by 5 publications

References 8 publications

Development of the magnetic separation device for surface cracks of delinted cottonseed

Development of the magnetic separation device for surface cracks of delinted cottonseed

Separation Analysis of New Magnetic Separator for Pre-Concentration of Ilmenite Particles

Economic and Socio-Environmental Benefits of Dry Beneficiation of Magnetite Ores

Contact Info

Product

Resources

About