(pdf) wet high intensity magnetic separation of iron mineralsmagnetic separation using wet highintensity technique has become one of the most suitable methods for recovery of iron from lowgrade ores, due to its better separation efficiency as compared to a discussion of magnetic separation techniques for minerals separation based on magnetic susceptibility differences in particles is accomplished wet or dry, at various intensities and in different basic machine configurations. the following types of industrial magnetic separators can be found in a modern mineral sands plant: wet highintensity electromagnetic separators (whims) wet high intensity magnetic separation of iron mineralsthe magnetic properties of these minerals were measured. the effect of particle size and magnetic susceptibility on wet high intensity magnetic separation was studied simultaneously. it was found that hematite1 was a strongly paramagnetic mineral, and the effect of particle size in whims was not significant. y. shao, t. j. veasey, n. a. rowson 13 1996wet high intensity magnetic separators multotecwet high intensity magnetic separators (whims) separate ferromagnetic and paramagnetic particles and tramp metals with the worlds most efficient solutions. applications include heavy minerals, ilmenite, manganese and iron ore (haematite) beneficiationpgm upgrading as well as manganese recovery from slimes dams. intensity magnetic separator an overview sciencedirect topicsthe paramagnetic properties of some sulfide minerals, such as chalcopyrite and marmatite (high fe form of sphalerite), have been exploited by applying wet highintensity magnetic separation to augment differential flotation processes (tawil and morales, 1985). testwork showed that a chilean copper concentrate could be upgraded from 23.8% to 30 analysis of wet highintensity magnetic separation of low (2012). analysis of wet highintensity magnetic separation of lowgrade indian iron ore using statistical technique. separation science and technology: vol. 47, no. 8, pp. 11291138.

{the wet high intensity magnetic separation of magnesite ore a. atasoy: separation of magnesite ore waste hem. ind. 73 (5) 337346 (2019) 339 figure 2. flowsheet of the procedure used in this work for characterization and high intensity wet magnetic separation (hiwms) of mmpb481 wet high intensity magnetic separator whims)mineral resource, environmental protection, material and chemical engineering, advanced manufacturing, electronic and biotechnology. vertical ring wet high intensity magnetic separator is one of its project leading to a wide application in mineral processing industry. more than 500 units have been s worldwide. investigation of efficiency of magnetic separation methods 2.2. procedure of wet highintensity magnetic separation (whims) experiments whims experiments were done using highintensity magnetic separator model boxmag that was available in the mineral processing laboratory of college. magnetic field intensity, feed water flowrate and speed of drum are adjustable factors of this separator. 2.3. seyed hamzeh amiri 2019a discussion of magnetic separation techniques for minerals separation based on magnetic susceptibility differences in particles is accomplished wet or dry, at various intensities and in different basic machine configurations. the following types of industrial magnetic separators can be found in a modern mineral sands plant: wet highintensity electromagnetic separators (whims) 646kb 83analysis of wet highintensity magnetic separation of low investigations carried out on a wet highintensity magnetic separator using a lowgrade iron ore sample containing 49.27% fe shows that it is possible to upgrade to 62% fe in the concentrate with poor yield values. s. i. angadi, hoseok jeon, a. mohanthy, s. prakash, b. das 7 2012wet high intensity magnetic separationthe bureau of mines is investigating the following three most promising technologies for the beneficiation of oxidized taconites: 1. reduction roasting of the hematite and goethite to magnetite, followed by lowintensity magnetic separation and flotation. 2. selective flocculation of the ironbearing minerals, followed by froth flotation. 3. wet highintensity magnetic (whim) separation, either alone or in combination with selective flocculation and froth flotation. to obtain objective technological and economic analyses of these beneficiation processes, all three are being evaluated on a pilot plant scale using the same samples. in the reduction roasting process, the hematite and goethite in the ore are converted to magnetite by heating in a reducing atmosphere at approximately 800° c. although the first experimental plant was built on the mesabi range in 1934, the process has not been used commercially. the high operating cost of the energy consumed in roasting is partially compen see full list on 911metallurgist tests were conducted on a bulk sample of oxidized taconite from the western mesabi range. the sample represents ½ to 1 billion tons of crude ore. the possibility of beneficiating the sample by whim separation alone was evaluated in the laboratory on 1kg samples (fig. 2). a sample of rodmill discharge was separated in an eriez model l4 whim separator with a 20cmdeep matrix of 0.6cm iron spheres and a 0.5tesla applied field. a coarse tailing containing 31.5 percent of the feed weight, but only 3.8 percent of the iron in the feed, was obtained. to achieve sufficient liberation of the ore, the preconcentrate was reground to 80 percent passing 400 mesh (37 micrometers). separation of the reground material was carried out with a matrix of coarse stainless steel wool and a 1.0tesla applied field. two stages of separation produced a finisher concentrate containing 63.5 percent fe and 5.5 percent sio2 with an accompanying iron recovery of 73 percent. the laboratory results have not be see full list on 911metallurgist because alternative processing methods and alternative sources of ore exist, whim separation will be commercially applied to oxidized taconites only if it is cost competitive. the key to minimizing costs is to optimize the separator design for a particular application. a rational optimization procedure requires a mathematical model of separator performance as a function of the basic design and operating parameters. most existing models of whim separation can be classified as highly theoretical or purely empirical. during the past few s, there has been much interest in the development of theoretical models of whim separation based on particle trajectory calculations. recent computerbased models have shown some degree of correspondence with experimental results after the introduction of two adjustable parameters for each particle size. application of a theoretical model to a practical optimization problem would require a very extensive ore characterization study followed by syste see full list on 911metallurgist models developed from benchscale tests are valuable for designing pilot or fullscale whim separators only when the larger machines offer the same degree of control over operating parameters that laboratory units do. one important feature lacking in many continuous units is control over flow velocity by means other than the natural resistance of the matrix bed. the bureau of mines pilot plant experience has indicated several other important features of effective separator design. the applied magnetic field should be reasonably uniform across the cross section of matrix through which the feed slurry and rinse water flow. adequate provision should be made for rinsing the matrix with clean water in the high magnetic field region. the nonmagnetic , rinse, and magnetic products should be effectively separated. the design should avoid areas where particles can settle out and accumulate, such as flatbottomed sections, regions of stagnant flow, and highgradient regions outside of the m see full list on 911metallurgist whim separation, either alone or in combination with flotation, is a technically feasible method of processing the enormous resources of oxidized taconite in the lake superior region. commercial feasibility depends upon continuing progress in the design and construction of effective, reliable, yet economical magnetic separators. mathematical models of separator operation can be valuable aids to the development of optimal designs. however, over dependence on unconfirmed theoretical descriptions, extrapolation of purely empirical results, and neglect of certain practical aspects of separator design can all lead to costly errors. rational design of a fullscale separator for a particular application requires a realistic phenomenological model, supplemented by a systematic program of laboratory and pilot plant experimentation. see full list on 911metallurgist chapter8 beneficiation of iron oreslow intensity magnetic separators (lims) are used to treat ferromagnetic and highly paramagnetic minerals such as iron and magnetite. high intensity magnetic separators (hims) generally have field strengths of 10 to 20 kilogauss. these separators are used to treat weakly magnetic minerals, such as hematite.

on the production of iron ore superconcentrates by high jun 01, 1975 · international journal of mineral processing, 2 (1975) 117126 elsevier scientific publishing company, amsterdam printed in the netherlands on the production of iron ore superconcentrates by highintensity wet magnetic separation j.a. bartnik, w.h. zabel and d.m. hopstock ferromagnetics ltd., lachine, que. (canada) kloecknerhumbtdeutz a g, cologne (germany) mineral resources research investigation of efficiency of magnetic separation methods apr 01, 2019 · the most valuable minerals are hematite and goethite and main gangue minerals are calcite and quartz. wet and dry highintensity magnetic separation methods were applied for processing. the full factorial design was implemented for all of the wet highintensity magnetic separation (whims) experiments. (pdf) high intensity magnetic separation of iron ore slime a systematic study on this slime sample using wet high intensity magnetic separation at higher intensities was carried out and the products were analyzed both chemically and mineralogically. the on the production of iron ore superconcentrates by high jun 01, 1975 · since the capital and operating costs increase with increasing magnetic field strength, the key to economical superconcentrate production by highintensity wet magnetic separation is starting with an ore for which the iron minerals liberate at a relatively coarse size. it is essential that a minimum of locked particles be present. j.a. bartnik, j.a. bartnik, w.h. zabel, w.h. zabel, d.m. hopstock, d.m. hopstock 5 1975recent advances in magnetic separator designs and applicationsmagnetic separation equipment for minerals processing generally falls into three basic categories: low, medium and high intensity, based on the relative magnetic field strength employed to accomplish separation. low intensity magnetic separators (lims), are generally wet separators and are commonly used for concentration of magnetite, or for wet high intensity magnetic separator mineral technologiesmineraltechnologies page 5 of 6 leaders in mineral separation wet high intensity magnetic separator whims laboratory / pilot scale separator twin feed point unit suitable for batch or closed loop operation the reading whims set the industry benchmark for magnetic separation of fine minerals. they afford the most 252kb 6

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