Improved iron recovery from low-grade iron ore by efficient …
According to the chemical composition of the sample (Table 1), Fe and FeO contents of the low-grade iron ore were 27.88% and 1.38%, respectively.The small FeO content indicated the presence of few magnetic iron minerals. In addition, the SiO 2 content was up to 55.65%, which suggested that the ore had to be pretreated to be suitable for …
Iron removal from relatively low grade silica using magnetic separation
In this research work, it was attempted to reduce the iron contents (Fe2O3) in relatively low grade silica sample which was obtained from Shenin silica mine, using magnetic separation. The ...
Magnetic separation: A review of principles, devices, and applications
Potential applications of these new devices in pollution control, chemical processing, and the benefication of nonferrous low grade ores is indicated. The principle of operation of magnetic separation devices is the interaction between magnetic forces and competing gravitational, hydrodynamic, and interparticle forces within the magnetic separator.
Developing high gradient magnetic separators for greener …
As the primary beneficiation method for iron ore, magnetic separation improves ore grade, reduces silica and harmful impurity content, and facilitates the smelting process [28], [32], [33]. Utilizing magnetic separation is an important step towards achieving green and low-carbon steel production.
(PDF) Magnetic separation studies for a low grade siliceous …
Commercial grade concentrate could not be generated by dry magnetic separation even at finer sizes. (4) Wet magnetic separator at low magnetic intensity indicates that a concentrate with more than 66.0% Fe could be produced after grinding the sample to …
(PDF) Mineralogical and Beneficiation Studies of a Low Grade …
Iron removal from relatively low grade silica using magnetic separation. Hamed Haghi. In this research work, it was attempted to reduce the iron contents (Fe2O3) in relatively low grade silica sample which was obtained from Shenin silica mine, using magnetic separation. The prepared sample contained 93.75%SiO2, 0.44%Fe2O3, 2.78%Al2O3, …
A novel pneumatic dry high-intensity magnetic separator …
1. Introduction. High-intensity magnetic separation (HIMS) as an integral part of sorting paramagnetic materials has been widely used in different areas [1, 2], such as beneficiation of minerals [3], desulfurization of coal [4], non-metal ore purification [5], waste treatment [6], and nuclear fuel reprocessing [7].Over the span of decades, a …
Development of a centrifugal dry magnetic separator for separation …
In this investigation, a new full-scale centrifugal dry magnetic separator (cDMS) was introduced and applied to pre-concentrate a low-grade fine magnetite ore, and its separation performance regarding feed particle size was evaluated, in comparison with a typically dry magnetic separator. 2. Experimental2.1.
Magnetic Separation | SpringerLink
On the other hand, high-intensity magnetic separators can be utilized to treat weakly magnetic materials, whether fine or coarse, in dry or wet mode. In the case of fine, feebly magnetic minerals, the best choice for magnetic separation is high-gradient magnetic separators . Dry low-intensity magnetic separators (DLIMS) are generally …
Effective processing of low-grade iron ore …
The rougher tests of both the gravity separation and magnetic separation produced concentrates of about 44% Fe. ... It is a low grade ore with 27.43 % Fe content that requires concentration to ...
Magnetic separation studies for a low grade siliceous …
Magnetic separation studies for a low grade siliceous iron ore sample. January 2013. International Journal of Mining Science and Technology 23 (1):1-5. DOI: …
A Beneficiation Study on a Low Grade Iron Ore by Gravity and Magnetic …
The results indicated that spiral separation yields higher separation efficiency than others. The combination of spiral and multi gravity methods showed that the grade and recovery could be obtained 58.7 and 55.6%, respectively. Scrubbing and de-sliming stages increased the recovery in the wet high intensity magnetic process.
Mineralogical and Beneficiation Studies of a Low …
These studies include mineralogical characterization, size distribution, complete chemical analysis, distribution of Fe in different size fractions. Beneficiation …
Characterizations on phase reconstruction
Eventually, this work can provide an alternative way for higher-value utilization of low-grade ferruginous manganese ore resources by the novel uphill reaction diffusion and magnetic separation. 2. Experimental2.1. Raw materials. Low-grade ferruginous manganese ore was used as the raw material for the preparation of ferrite.
Study on the Grinding Kinetics and Magnetic Separation of Low-Grade …
In addition, the grinding process is an important operating unit for improving the efficiency of magnetic separation—especially in the magnetic separation processing of complex polymetallic co-associated ores such as low-grade VTM [16,17,18,19]. However, grinding is an extremely energy-consuming operation, and is a dangerous process in the ...
Development and performance of a permanent magnet pulsating separator
As a result, conventional magnetic separators sometimes cannot obtain a sufficiently high concentrate grade[2], e.g. at concentrators in the Panzhihua area of China, wet drum low-intensity magnetic separators are usually adopted to concentrate finely ground −0.074 mm magnetite ores, and generate a magnetite concentrate with a TFe …
Minerals | Free Full-Text | Dry Permanent Magnetic Separator…
In addition, reducing the particle size of low-grade iron ore significantly decreases the magnetic force on the minerals ... The industrial test results of this magnetic separator reveal that the iron grade improved by 9.3 percentage points and that the recovery rate reached 90.85% after primary sorting using <1 mm KBH dephosphorized …
Physical Concentration of Heavy Minerals: A Brief …
HMs such as columbite-tantalite (coltan) (Fe,Mn,Mg (Nb,Ta) 2 O 6 ), zircon ( (Zr,Hf)SiO 4 ), ilmenite (TiFeO 3 ), and rutile (TiO 2) are very important sources of …
Prereduction and magnetic separation of low grade …
In particular, the abundant low-grade manganese ores, which contain iron oxide, may be upgraded by prereduction and magnetic separation. In this study, ferruginous low-grade manganese ore was prereduced by CO, which converted iron oxide to Fe3O4 while manganese oxide was reduced to MnO. Then, the iron-rich component …
Separation of manganese and iron for low-grade …
After magnetic separation, magnetite and manganosite were individually separated at individual concentrates, which efficiently transforms and utilises this low-grade ferromanganese ore without any residue using this process. ... Magnetic Separation and Magnetic Properties of Low-Grade Manganese Carbonate Ore. JOM, 67 (2015), pp. 361 …
Performance assessment of an innovative precise low-intensity magnetic
An innovative precise low-intensity magnetic separator (PLIMS) was developed for recovering low-grade magnetite. The effects of the key parameters on the separation performance of the PLIMS in recovering magnetite were investigated. The results indicated that the drum rotation speed and feed particle size played major roles in …
Beneficiation of Low-Grade Laterite Nickel by …
Calcination of feed at 750°C followed by wet magnetic separation with the magnetic field of 6000 Gauss in comparison with alone magnetic separation caused an increase in recovery and grade of magnetic concentrate to 12.7% and 0.41%, respectively. Results showed that an increase in
Separating efficiency of ferromagnetic particles and principle of low
1. Introduction. Magnetic separation is a method to recover magnetic materials by magnetism difference between particles, which is mostly applied in the field of mineral processing and is cleaner and cheaper than other methods such as flotation [[1], [2]].According to the media (water or air), magnetic separation can be divided into wet …
Performance assessment of an innovative precise …
An innovative precise low-intensity magnetic separator (PLIMS) was developed for recovering low-grade magnetite. The effects of the key parameters on the …
Minerals | Free Full-Text | Dry Permanent Magnetic …
Introduction. Dry magnetic separation is a technology that sorts magnetic minerals from gangue using air as the medium instead of water. When raw ore is fed to …
Magnetic separation studies for a low grade siliceous …
Magnetic separation studies for a low grade siliceous iron ore sample | Semantic Scholar. DOI: 10.1016/J.IJMST.2013.01.001. Corpus ID: 129292239.
Performance assessment of an innovative precise low-intensity magnetic
An innovative precise low-intensity magnetic separator (PLIMS) was manufactured. The performances of the PLIMS and selected CLIMS and DTT were compared. The outcomes showed that the PLIMS have a higher iron grade and recovery. The advantage of the PLIMS is that multiple concentrates can be obtained by one …
Sequential microwave roasting and magnetic separation for …
The low-grade pyrophyllite ore was treated using microwave roasting for 30 min and subsequent magnetic separation at 4000 gauss. The chemical compositions of the magnetic and non-magnetic fractions were analyzed by XRF (Table 2). Microwave roasting (sample MR) slightly decreased the sample weight due to a loss of ignition (LOI) …
Magnetic separation studies for a low grade siliceous …
Dry high-intensity drum magnetic separator (DHIDMS) has been effectively used for the utilization of low-grade iron ores, thus an in-depth investigation on the …
Study on selective reduction and magnetic …
low grade nickel laterite by pre-reducing – Magnetic separation-smelting process, in Proceedings XXIV International Mineral Processing Congress, pp 1622 - 1633 (Beijing General Research ...