scholarly journals Influence of Mineralogy on the Dry Magnetic Separation of Ferruginous Manganese Ore—A Comparative Study

Minerals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 150
Author(s):  
Sharath Kumar Bhoja ◽  
Sunil Kumar Tripathy ◽  
Yanamandra Rama Murthy ◽  
Tamal Kanti Ghosh ◽  
C. Raghu Kumar ◽  
...  
Keyword(s):  
Magnetic Separation ◽  
Separation Performance ◽  
Gangue Mineral ◽  
Manganese Ore ◽  
Magnetic Separator ◽  
Dry Magnetic Separation ◽  
Mn Recovery ◽  
Optimum Grade ◽  
Iron Bearing ◽  
Iron And Manganese

Magnetic separation is often considered pertinent for manganese ore beneficiation when the ore is abundant with siliceous rich gangue mineral phases. However, the process is deemed to be inapposite for the ferruginous type of ore, and remains a grey area of research. In the present investigation, two different types of manganese ore were studied in detail to understand the influence of mineralogy on their magnetic separation performance. Detailed experiments were performed by varying the critical variables of the dry magnetic separator, and the separation features were studied. The ore samples were thoroughly characterized by various techniques, including an automated advanced mineralogical tool. The mineralogical results revealed that primary manganese bearing minerals in both the ores are rich in cryptomelene, pyrolusite, psilomelane, and bixybyite. Similarly, the major gangue minerals were alumina-bearing minerals and iron-bearing phases (hematite and goethite). The optimum grade that could be obtained from single-stage dry magnetic separation was 35.52% Mn, and with a Mn:Fe ratio of 1.77, and 44% Mn recovery in the case of sample 1; whereas, a 33.75% Mn grade, with a Mn:Fe ratio of 1.66 at Mn recovery of 44% was reported for Sample 2. It was observed that both samples had a similar input chemistry (~28% Mn, ~1 Mn: Fe ratio) however, they had distinctive mineralogical assemblages. Furthermore, it was observed that the liberation of manganese mineral was in a course size range, i.e., 300 to 450 µm, while the association of iron and manganese bearing phases was lower in sample 1 when compared to sample 2.

Recovery of iron and manganese from iron-bearing manganese residues by multi-step roasting and magnetic separation

2018 ◽  
Vol 126 ◽  
pp. 177-183 ◽  
Author(s):  
Ning Peng ◽  
Qinglin Pan ◽  
Hui Liu ◽  
Zhihui Yang ◽  
Gongliang Wang
Keyword(s):  
Magnetic Separation ◽  
Iron Bearing ◽  
Iron And Manganese

scholarly journals Evaluation of Magnetic Separation Efficiency on a Cassiterite-Bearing Skarn Ore by Means of Integrative SEM-Based Image and XRF–XRD Data Analysis

Minerals ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 390 ◽  
Author(s):  
Markus Buchmann ◽  
Edgar Schach ◽  
Raimon Tolosana-Delgado ◽  
Thomas Leißner ◽  
Jennifer Astoveza ◽  
...  
Keyword(s):  
Magnetic Separation ◽  
Iron Oxides ◽  
Separation Efficiency ◽  
Analysis Data ◽  
Gangue Mineral ◽  
Data Partition ◽  
Local Regression ◽  
Separation Processes ◽  
Magnetic Separator

Image analysis data obtained from scanning electron microscopy provided data for a detailed evaluation of the separation efficiency for various processes involving the beneficiation of particulate materials. A dry magnetic separation by a drum type magnetic separator served as a case study to visualize effects of processing of a skarn ore with a high content of cassiterite as ore mineral (~4 wt%). For this material, iron oxides and silicates are the main gangue mineral groups. Based on the obtained data, partition curves were generated with the help of local regression. From the partition curves, the separation efficiency was evaluated and the relevant particle properties deduced. A detailed analysis of the bias of the quantitative mineralogical data is presented. This bias was monitored and further analyzed in detail. Thorough analysis of feed and products of magnetic separation enabled identification of the most important factors that control losses of cassiterite to the magnetic product, namely the association with iron oxides and particle sizes below ~40 µm. The introduced methodology is a general approach applicable for the optimization of different separation processes and is not limited to the presented case study.

scholarly journals Dry magnetic separation technology for the recovery of iron minerals in fine-grained steel slag

2020 ◽  
Vol 40 (1) ◽  
pp. 7-16
Author(s):  
Liang Chang Shi ◽  
Nan Sheng Wang ◽  
Gan Cheng
Keyword(s):  
Particle Size ◽  
Magnetic Separation ◽  
Steel Slag ◽  
Separation Distance ◽  
Magnetic Separator ◽  
Separation Technology ◽  
Fine Grained ◽  
Dry Magnetic Separation ◽  
Concentrate Grade ◽  
Parameter Values

Using the MagNet software package, a permanent magnetic circuit was simulated and a sectorially-spliced magnetic system was designed. Consequently, a new roller permanent magnetic separator with different magnetic field intensities in each roller was developed. The modular structural design allows fine-grained minerals with different magnetic susceptibility to be separated in one pass, according to their different processing characteristic. Steel slag, selected from a factory, was crushed, ground and sieved into different particle size ranges for the single-factor magnetic separation experiments. It was determined that the optimum value ranges for the particle size, magnetic separation distance and rotating frequency were 0.15 mm-0.3 mm, 10 mm-12 mm, 40 Hz～60Hz, respectively; using the chosen parameter values of 0.2mm, 11mm, and 40Hz, the concentrate recovery and concentrate grade of the new separation technology reached up to 52.78% and 64.74%, in comparisson with the existing technology. Thus, it was demonstrated that the self-developed separation technology has the potential to improve the iron recovery of the fine-grained steel slag.

Eddy-Current Induced Magnetic Separation of Nonferrous Metals from Solid Wastes

2014 ◽  
Vol 962-965 ◽  
pp. 873-876
Author(s):  
Hui Fen Zhang ◽  
Lu Zheng Chen
Keyword(s):  
Magnetic Separation ◽  
Eddy Current ◽  
Magnetic Force ◽  
Density Ratio ◽  
Pilot Scale ◽  
Nonferrous Metals ◽  
Solid Wastes ◽  
Separation Performance ◽  
Separation Procedure ◽  
Magnetic Separator

The increasing demand for nonferrous metals in China made the recycle of metallic values such as copper and aluminum metals from solid wastes a prospective resource for nonferrous metals. Eddy-current induced magnetic separation as a friendly separation method may be effectively applied for the separation of nonferrous metals from solid wastes. In the present investigation, a pilot-scale eddy-current induced magnetic separator and its separation procedure was briefly introduced, and the magnetic force acted upon a metal ring is theoretically calculated; on the basis of the calculation of magnetic force, the effects of two key operational parameters, i.e., conductivity/density ratio of metals and frequency of alternative magnetic field, on the separation performance of the pilot-scale magnetic separator were investigated. The results of investigation indicate that the eddy-current induced magnetic separation is effective for the recycle of nonferrous metals from solid wastes.

scholarly journals Variables and Applications on Dry Magnetic Separator

2018 ◽  
Vol 53 ◽  
pp. 02019
Author(s):  
Qin Xing Zong ◽  
Luo Zhen Fu ◽  
Lv Bo
Keyword(s):  
Rare Earth ◽  
Magnetic Separation ◽  
Large Scale ◽  
Magnetic Particles ◽  
Water Shortage ◽  
Heavy Mineral ◽  
Magnetic Separator ◽  
New Ideas ◽  
Dry Magnetic Separation ◽  
Separation Equipment

Magnetic separation is an indispensable part of magnetic separation, and the dry magnetic separator can be selected under the condition of water shortage in China to ensure that our country can also be selected under the conditions of lack of some resources. The magnetic separator plays a role in improving the grade of ore, purifying solid and liquid materials, and recycling waste. With the application and development of magnetic separation technology, magnetic separation equipment is constantly updating and replacing, and dry magnetic separation has experienced remarkable technological progress over the past twenty years. There are many new ideas and techniques applied in magnetic separators. So far, dry magnetic separators have developed many different applications for mineral and coal processing, for induction roller magnetic separators for chromite. Cross-belt magnetic separator for removing harmful magnetic particles and paramagnetic particles. The lifting roller magnetic separator is used in the heavy mineral industry to separate garnet from monazite and rutile. Rare earth drum magnetic separator for fine feed dry magnetic separation sorting process and rare earth roller magnetic separator for zircon and rutile in heavy mineral sand industry. These magnetic separators have different applications, and the dry magnetic separator is also moving toward large-scale and easy-to-manufacture.

Research of the influence of material composition and size of iron quartzites of the Olenegorsk deposit on the results of dry magnetic separation

2020 ◽  
pp. 15-20
Author(s):  
S. V. Tereshchenko ◽  
◽  
D. N. Shibaeva ◽  
S. A. Alekseeva ◽  
A. A. Kompanchenko ◽  
...  
Keyword(s):  
Magnetic Separation ◽  
Structural Features ◽  
Magnetic Fraction ◽  
Magnetic Separator ◽  
Mass Fractions ◽  
Dry Magnetic Separation ◽  
Iron Quartzites ◽  
Increased Strength ◽  
Grinding Efficiency ◽  
Ferruginous Quartzites

On the example of a sample of ferruginous quartzites from the Olenegorskoye deposit, the possibility of preliminary concentration by dry magnetic separation (DMS) has been established. The mineralogical and petrographic studies have shown that, in terms of their textural and structural features and mineral composition, ferruginous quartzites may be divided into two types, differing in the amount of hematite included in their composition, which indicates the possibility of using DMS to generate the following three separation products: magnetite, hematite-magnetite, and rock. DMS with the use of a laboratory drum magnetic separator allowed selecting the upper size limit of 80 mm for lumps entering the separation. At the same time, 24.7 to 26.0 % of all waste and low-mineralized rocks with the mass fraction of Fetot of 4.51 to 6.07 % are transferred to the non-magnetic fraction during the separation of classes of –80+50 and –50+25 mm. For the size class of –25+10 mm, the yield and Fetot values are within the same limits. It has been shown that sulfidecontaining rocks and rocks of increased strength (with the strength coefficient of at least 23) are separated into the non-magnetic fraction. The strength of ferruginous quartzites does not exceed 20. This rock strength ratio confirms improved crushing and grinding efficiency. The possibility of separation of the magnetic fraction with the particle size of –80+25 mm into the following products has been established: the magnetite-hematite product (MF-1 + MF-2) with the mass fractions of Femagn 43.3% and Fehem 14.9 %, and the predominantly hematite product (MF-3 + MF-4) with the mass fractions of Femagn 1.1 % and Fehem 67.9 %.

Desulphurization of High Sulfur Coal by Mild Pyrolysis Combination with Magnetic Separation

2012 ◽  
Vol 455-456 ◽  
pp. 998-1001
Author(s):  
Quan Run Liu ◽  
Hao Xia ◽  
Guang Xu Huang ◽  
Chuan Xiang Zhang ◽  
Ming Jie Ma ◽  
...  
Keyword(s):  
Magnetic Separation ◽  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
The Novel ◽  
Magnetic Separator ◽  
Desulfurization Process ◽  
Dry Magnetic Separation ◽  
Mild Pyrolysis ◽  
Almost All ◽  
Remarkable Reduction

In this work, a new desulfurization process of high sulfur coal was designed and examined. The novel process involved pyrolysis of high sulfur coal at low temperature and then a dry magnetic separation. For testing the cleaning coal process, a Chinese high sulfur coal, Baisu coal was pyrolyzed in a fixed bed reactor from 400 to 700°C for 30min, and then separated by a dry magnetic separator. The results showed that under optimum conditions, a remarkable reduction of sulfur content in coal was achieved, and more importantly, almost all pyrite sulfur in coal was removed.

Investigation of the magnetic separation performance of a low-intensity magnetic separator embedded with auxiliary permanent magnets

2022 ◽  
Vol 178 ◽  
pp. 107399
Author(s):  
Feiwang Wang ◽  
Shitao Zhang ◽  
Zhiqiang Zhao ◽  
Likun Gao ◽  
Xiong Tong ◽  
...  
Keyword(s):  
Magnetic Separation ◽  
Permanent Magnets ◽  
Separation Performance ◽  
Magnetic Separator ◽  
Low Intensity

scholarly journals DRY MAGNETIC SEPARATION OF MAGNETITE ORES

2020 ◽  
Vol 17 (34) ◽  
pp. 700-710
Author(s):  
Kanat Sh CHOKIN ◽  
Abdraman I YEDILBAYEV ◽  
Baimurat A YEDILBAYEV ◽  
Vladimir D YUGAY
Keyword(s):  
Magnetic Separation ◽  
Experimental Studies ◽  
Magnetic Separator ◽  
New Model ◽  
Fine Grained ◽  
Magnetite Ore ◽  
Industrial Grade ◽  
Dry Magnetic Separation ◽  
Industrial Scheme ◽  
Dry Beneficiation

The relevance of the paper is that dry magnetic separation (DMS) is the main beneficiation method of magnetite ores. The lack of efficient industrial-grade machines and apparatus for separating fine-grained magnetite ores means that DMS is used mainly as a pre-concentration operation for fairly large classes. The aim of the research is to study the possibility of using a new magnetic separator model in the process of dry beneficiation of magnetite ore from the Bapy deposit. This paper presents theoretical and experimental studies of a new model of a magnetic separator. The mathematical modeling of the magnetic separation process of the device was carried out to evaluate the parameters in accordance with which a laboratory separator was subsequently manufactured. For the experimental study of the properties of this magnetic system, a laboratory magnetic separator was built. The possibility of using a new magnetic separator in the process of dry beneficiation of magnetite ore from the Bapy deposit was investigated. The industrial scheme being implemented consists in ore crushing and two stage dressing on dry drum magnetic separators. The study of beneficiation indicators of the magnetic separator was carried out using iron ore of the Bapy deposit, which is mono-mineral magnetite. For the study, mixtures of the minus 0.1 mm class were selected with the iron content α = 50% and α = 40%. As a result of the research, beneficiation indicators were obtained on a laboratory scale. Therefore, the improvement of the beneficiation scheme is reduced to the isolation of a small product and its subsequent beneficiation using a new model of magnetic separator. Thus, the presented magnetic separator is suitable for dry processing of crushed magnetite ore.

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