Dry Magnetic Separation of Iron Ore of the Bakchar Deposit

Shvaljov, Y.B.

doi:10.1016/j.proche.2015.10.026

Cited by 24 publications

(3 citation statements)

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“…Gambar 1. Kurva magnetisasi untuk material feromagnetik, paramagnetik dan diamagnetik [3] Penelitian terkait peningkatan kadar bijih yang sudah dilakukan Ezhov, et al, (2015) dalam melakukan proses benefisiasi bijih besi menggunakan dry magnetic separation dengan variasi kuat arus (Amper) 3, 4 ,5 , 6 dan 7. Percobaan tersebut berhasil meningkatkan kadar besi dari 43,9% menjadi 49,8% yang didapatkan pada kondisi kuat arus 7 Ampere [4].…”

Section: Pendahuluanunclassified

Pengaruh Ukuran Partikel Pada Proses Peningkatan Kadar Dan Perolehan Bijih Besi Bontocani Menggunakan Dry Intensity Drum Magnetic Separator

Juradi

Umar

Ali

et al. 2022

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Ketersediaan bijih besi daerah Bontocani Kabupaten Bone belum dimanfaatkan sebagaimana mestinya. Hal tersebut dipengaruhi oleh nilai kadar yang masih cukup rendah sehingga perlunya dilakukan peningkatan kadar bijih besi. Penelitian ini bertujuan untuk mengetahui kadar bijih besi daerah Bontocani dengan XRF dan XRD serta mengetahui pengaruh ukuran fraksi terhadap peningkatan kadar besi dengan proses dry low intensity drum magnetic separator. Penelitian dilakukan dengan pendekatan kuantitatif berbasis percobaan laboratorium. Pada percobaan ini dilakukan variasi ukuran partikel -100 mesh, -150 mesh dan -200 mesh dengan kondisi percobaan intensitas magnet 0,5 T, umpan 500 gr, kecepatan putar drum 400 rpm dan waktu pemisahan 15 menit. Hasil analisis XRD (X-Ray Diffraction) mengindikasikan sampel bijih besi tersusun oleh mineral kuarsa, geotit, magnetit dan hematit sedangkan hasil analisis XRF (X-Ray Fluorescence) menunjukkan komposisi kimia bijih besi terdiri dari Fe2O3 70,098%, SiO2 18,678%, SO3 5,504%, CaO 3,389%, MnO 1,222%, CuO 0,090% dan Cr2O3 0,019%. Proses konsentrasi menggunakan magnetic separator tipe dry-low intensity drum dengan berat umpan 500 gr pada masing-masing fraksi ukuran -100 mesh, -150 mesh dan -200 mesh menghasilkan berat konsentrat 332,5 gr, 323,1 gr dan 341,5 gr dengan berat tailing 90 gr, 125,7 gr dan 30,3 gr. Kadar Fe2O3 dalam konsentrat tiap fraksi yaitu, 82,138%, 86,116% dan 90,098% dengan perolehan masing-masing 77,992%, 79,386% dan 87,787%. Berdasarkan hasil percobaan disimpulkan bahwa semakin kecil ukuran partikel, semakin meningkatkan persentase nilai kadar dan perolehan, dimana persentase kadar Fe2O3 dan perolehan yang paling optimal didapatkan pada fraksi ukuran butir -200 mesh.

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Section: Pendahuluanunclassified

Pengaruh Ukuran Partikel Pada Proses Peningkatan Kadar Dan Perolehan Bijih Besi Bontocani Menggunakan Dry Intensity Drum Magnetic Separator

Juradi

Umar

Ali

et al. 2022

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“…B. Shvaljov. The results revealed that using low intensity dry magnetic separa tion on particle size of 15 μm leads to maximum efficiency [12].…”

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“…In case of using the belt in dry high intensity magnetic separator, the best belt speed is found as 73 RPM, and in case of using a shaking table device the best result is 4.13° of inclina tion angle, 2.5 cm stroke length and feed rate 307.6 Gm/min [10]. Furthermore, in case of using drum dry magnetic separa tion instead of roll dry magnetic separation, the best speed of the drum is measured as 154 RPM [12]. While using two stage perm roll separation the recovery of chlorite in the nonmag netic tailings was probably about 20 to 30 % [15].…”

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Investigation of the effect of several parameters on the applicability of magnetic separation method

Al-Azab¹,

Haddad²,

Alfaqs³

2021

Nauk. visn. nat. hirn. univ.

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Purpose. This research investigates the separation process performed by a magnetic separator. The magnetic separation process is used to isolate ferrous materials from those which are not. Hence, a prototype of a dry magnetic separator is designed. It should be said that this study defines the effect of different parameters (roll speed, magnetic force, and mass of silica sand particle) on separation efficiency. Methodology. The influence of several parameters of the magnetic separator such as magnetic force, centrifugal force, and properties of particle (mass, shape, etc.) were studied theoretically and simulated by SolidWorks software. The optimum conditions of the magnetic separator were obtained, and several trials were performed to find the point that results in a lower effect of roller speed and a higher effect of the magnetic force on the particle in order to achieve higher separating efficiency. Findings. The results show that the centrifugal force are the most important variable influencing separating efficiency. Moreover, it was found that blade angle magnitude of (174) degree with magnetic force between (1.71E-05 to 6.3E-05 N) and roll speed from (84 to 105 rpm) are the optimum separating conditions to reach higher rate of the separating process. Originality. This is the first time that the effect of the gap distance between the magnet and the feeding particles on the magnetic force has been studied. Furthermore, the effect of centrifugal force on magnetic separator force is investigated theoretically and numerically in order to be compared for different parameters. Practical value. The new prototype design of the magnetic separating unit is promising and efficient since the parameters can be varied based on the type and characteristics of materials. It is also revealed that separating time of the materials is reduced. Hence, this type of construction of a magnetic separator is recommended for industrial applications.

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Magnetic Separation

Chelgani

Neisiani

2022

Dry Mineral Processing

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Dry Magnetic Separation of Iron Ore of the Bakchar Deposit

Cited by 24 publications

References 0 publications

Pengaruh Ukuran Partikel Pada Proses Peningkatan Kadar Dan Perolehan Bijih Besi Bontocani Menggunakan Dry Intensity Drum Magnetic Separator

Pengaruh Ukuran Partikel Pada Proses Peningkatan Kadar Dan Perolehan Bijih Besi Bontocani Menggunakan Dry Intensity Drum Magnetic Separator

Investigation of the effect of several parameters on the applicability of magnetic separation method

Magnetic Separation

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