Influence of matrix type on WHIMS performance in the magnetic processing of iron ores

Quast, Keith; Skinner, William

doi:10.1016/j.mineng.2020.106346

Cited by 17 publications

(5 citation statements)

References 49 publications

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“…Several authors have demonstrated a series of new technologies that could enhance magnetic separation processes through the development of new characterization techniques [27], equipment's [28][29][30][31][32][33][34] and the use of different matrices in high-intensity magnetic separation [35][36][37][38][39]. Such alternatives may result in significant gains in capacity, fines recovery, quality, and metallurgical recovery, as they make use of existing capacity and require low capital investment.…”

Section: Otimização Da Separação Magnética Da Hematita Contida No Pro...mentioning

confidence: 99%

Optimization of magnetic separation of hematite contained in the depressed product from vazante mine s zinc ore flotation

Rayes¹,

Fantato²,

Deursen³

et al. 2023

Tecnol. Metal. Mater. Min.

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The mining industry has seen a significant decline in mill feed grade in recent years, resulting in an ongoing build-up of materials not recovered at the mineral processing plants whose economic value has not yet been determined. Tailings dams have been the preferred method of disposal of such materials. However, recent dam breach events and the growing demand for mineral goods have enhanced the appeal of a more effective use of mined materials to prevent tailings accumulation and reduce social and environmental impacts, in line with the environmental, social and governance (ESG) principles that most companies have adopted. Different techniques can be used to recover economically valuable minerals contained in such materials, among which magnetic separation stands out for reasons of cost, production capacity, and recent developments of new equipment and matrices for wet high-intensity magnetic separators. The outcome includes gains in capacity, grade, and recovery yield. This paper assessed the use of a matrix developed by the company Gaustec, called BigFlux, in the magnetic separation of depressed product from the flotation process at Nexa Resources's Vazante mine. Laboratory-scale magnetic separation tests were conducted using standard and an optimized matrix. For a 59% iron concentrate, the metallurgical recovery using such optimized matrix reached 72.6%, up 4% from the figure resulting from the use of the standard matrix, thus indicating that the use of the optimized matrix can improve the magnetite recovery process of the studied material.

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Section: Otimização Da Separação Magnética Da Hematita Contida No Pro...mentioning

confidence: 99%

Optimization of magnetic separation of hematite contained in the depressed product from vazante mine s zinc ore flotation

Rayes¹,

Fantato²,

Deursen³

et al. 2023

Tecnol. Metal. Mater. Min.

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“…Dari hasil pengujian mineralogi dengan X-Ray Diffraction pada Tabel Tabel 3 memperlihatkan massa conto yang diproses secara magnetik pada fraksi ukuran, ditemukan bahwa semakin halus ukuran fraksi conto, semakin banyak pula konsentrat yang didapatkan. Hal tersebut sejalan dengan percobaan yang telah dilakukan Quast and Skinner., (2020), dalam hal ini wet high intensity magnetic separator (WHIMS) kurang efisien pada ukuran umpan -20 µm [8]. Untuk material yang hilang (loss) terjadi akibat kegiatan pemindahan material dari tempat umpan, melekat pada alat pemisahan dan juga pada saat kegiatan proses benefisiasi dilakukan [9].…”

Section: Hasil Dan Pembahasan Hasil Karakterisasi Umpan Dengan X-ray ...unclassified

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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“…WMS experiments were carried out on the drum separator EBM 32/20 with induction 0.13 T and single-pass bath procedure; high-gradient separation was realized on SLon 100 separator (core matrix with core diameter 1 mm, magnetic field induction 1.2 T, pulsation 250 min-1) [25,28].…”

Section: Experimental Partmentioning

confidence: 99%

Study of possibility of magnetic hydrocyclone use in concentration cycles of oxidized ferriferous quartzites

Lvov¹,

Aleksandrova²,

Kuskov³

et al. 2022

cisisr

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Iron role is very essential in the up-to-date economics. Magnetite quartzites are the main source of iron making in Russia. Oxidized ferriferous quartzites are also used for accumulation of the Russian mineral and raw material base. Substantial composition and concentration capacity of the represented sample of oxidized iron ore are examined. Ore sample was ground during two stages in a ball mill and IsaMill mill. Comminuted material was classified in magnetic hydrocyclone of original construction. Magnetic system, which was mounted on the hydrocyclone, had been designed using computer software ANSYS Maxwell for simulation of electromagnetic fields and had been manufactured with use of permanent magnets made of Nd-Fe-B alloys on the base of rare earth elements. Classifying products in magnetic hydrocyclone were concentrated consequently in low-and high-intensive magnetic fields. Technological scheme for concentration of oxidized ferriferous quartzites was developed. This scheme allows to produce high-quality magnetite concentrate, hematite concentrate and mixed hematite -magnetite concentrate.

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Influence of matrix type on WHIMS performance in the magnetic processing of iron ores

Cited by 17 publications

References 49 publications

Optimization of magnetic separation of hematite contained in the depressed product from vazante mine s zinc ore flotation

Optimization of magnetic separation of hematite contained in the depressed product from vazante mine s zinc ore flotation

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

Study of possibility of magnetic hydrocyclone use in concentration cycles of oxidized ferriferous quartzites

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