MAGNETIC SEPARATION IN SOUTH AFRICA 209 TABLE Ii Typical analyses at Foskor (percentage by mass) Material Feed Non-magnetic fraction TiO 2 II,O6 0,29 Fe203 4,53 0,06 ZrO2 75,0 >98 2.4. Magnetite Magnetite for use in DMS plants is recovered as a byproduct from the railings produced by PMC and Foskor at Phalaborwa. At Foskor, Sala …Web

SLon pulsating high-gradient magnetic separator as shown in Figure 12 has been innovatively developing since 1986, based on the principle of pulsating high-gradient magnetic separation, and it is now the mostly applied high-gradient magnetic separator over the world, widely used for concentration of fine weakly magnetic ores such as …Web

The WHIMS (wet high intensity magnetic separator) is generally used in the heavy mineral industry to perform the separation between magnetic ilmenite and non …Web

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.Web

low intensity magnetic field or of the rare earth type providing a high intensity magnetic field. Wet drum magnetic separators are generally applied in three different ways, namely to recover and recycle the medium used in dense medium separation (DMS), to remove magnetic contaminants from ores and concentrates, and to recover valuable magnetic ...Web

These work well in removing ferrous tramp but not fine para-magnetic particles. High intensity magnetic separators focus on the separation of very fine particles that are para-magnetic. Controlled current is passed through an electromagnetic coil, which creates a magnetic field. This magnetises the yoke and finally the matrix ring.Web

High gradient magnetic separator is a new type of high intensity magnetic separator, which has strong ability to capture fine and weak magnetic particles, developed on the basis of ordinary high ...Web

A wet low-intensity magnetic separator (LIMS) is the workhorse for winning magnetite from a slurry. However, the issue with optimizing LIMS is the balance between attracting too much material and obtaining mixed grains of extremely low-grade material (less than 20 vol% magnetite) in the concentrates and attracting too little material and …Web

• Dry high-intensity rare-earth roll (RER) separators Figure 1 depicts the basic magnetic separation technologies now available in the marketplace in terms of field intensities and modes of processing. LIMS and scalper magnets are not detailed in this paper. The selection of magnetic separation technology dependsWeb

Eriez Wet High Intensity Magnetic Separator (WHIMS) WHIMS are designed for high capacity, continuous removal or concentration of feebly magnetic materials. Typical applications include hematitic iron, rare …Web

Overview The Reading WHIMS set the industry benchmark for wet magnetic separation of fine minerals. They afford the most efficient separation of minerals in slurry form, when …Web

2.1.4 Screen Magnetic Separator. Screen magnetic separator presents another magnetic technique for the cleaning of strongly magnetic minerals such as magnetite, based on the principle of magnetic agglomeration (Li, 2005 ). As shown in Figure 5, slurry is fed from the top of an inclined screen in a low-intensity magnetic field, with the mesh ...Web

High magnetic field gradient is a crucial factor in HGMS process which can be described as a separation process or a deep-bed filtration process in which a magnetic matrix is magnetized and used to bundle the external magnetic field in its vicinity to generate high magnetic field gradient [12].In the presence of strong magnetic field, …Web

The magnetic system of the HGMS produces a uniform mag-netic field in the process area. To generate the necessary magnetic field gradient, a matrix of magnetic material with a structure such as expanded metal or steel wool is inserted. A high magnetic field gra-dient is hereby created around the filament of the matrix. The sharpWeb

The magnetic separator is the main component of a magnetic system. A low-intensity magnetic separator usually uses a multi-magnet magnetic system. A …Web

Wet drum separators have found use as higher-powered scalper separators for removal of ferromagnetic material in the feed to wet high-intensity magnetic separator (WHIMS) of the matrix-type. Such separators tend to plug up due to inefficient release of ferromagnetic material, captured in the matrix even at low magnetization in the "zero-field ...Web

Eriez Wet High Intensity Magnetic Separator (WHIMS) WHIMS are designed for high capacity, continuous removal or concentration of feebly magnetic materials. Typical applications include hematitic iron, rare earth minerals, industrial minerals and more. …Web

On the other hand, high-intensity magnetic ... indry or wet mode. Inthe case of fine, feebly magnetic minerals, the best choice for magnetic separation is high-gradient magnetic separators [14]. 2.2 Dry Low-Intensity Magnetic Separators (DLIMS) 31 Table 2.1 Minerals and theirWeb

These separators can be applied in both wet and dry modes. 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 .Web

Optimizing the performance of wet drum magnetic separators. M. Dworzanowski. Engineering, Materials Science. 2010. A ferromagnetic material when exposed to a magnetic field becomes magnetized but when it is removed from the magnetic field it remains magnetized and the degree of magnetization, or saturation…. …Web

The performance of floc magnetic separation (FMS) has been compared with wet high-intensity magnetic separator (WHIMS). This study was performed on low-grade iron ore slime contained 59.58% Fe ...Web

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 …Web

It can be used in wet processing for particles below 1.2 mm (- 200 mesh of 30 ~ ) of fine grained liberated material. Working Principle: The magnetic field is generated by the windings coil made of copper. Magnetic field is generated between the upper and lower yoke, between which the vertical ring can rotate.Web

the principle of magnetic separation. On the following pages, both technologies are presented in detail. Further informa- ... The JONES is a unique designed Wet High-Intensity Magnetic Separator (WHIMS) which can separate feeble magnetic material from non-magnetic material at very fine grain sizes (< 2 mm), depending on the application. ...Web

Magnetic separation of hematite using high intensity dry magnetic separation has been reported by Palasvirta (1959). He presented data for a coarse-grained specular hematite ore from Quebec ground to all passing 1.7 mm. Metallurgical results were exceptionally good, with concentrate grades as high as 67% Fe and iron recoveries in …Web

Magnetic separation includes dry type and wet type. Magnetic separators include high-intensity, medium-intensity, and low-intensity magnetic separators, and also high-gradient magnetic separator and superconducting magnetic separator. Magnetic separation is widely used for ferrous metal ore mineral processing, wolframite mineral …Web

High intensity magnetic separators that were effective in collecting fine paramagnetic particles utilized electromagnetic circuits. These separators were large, heavy, low capacity machines that typically consumed an inordinate amount of power and required frequent maintenance. ... In the wet separation of minus 325-mesh feeds, intermittent ...Web