The magnetic separator is the key beneficiation equipment for separating magnetic minerals from non-magnetic minerals or minerals with magnetic differences. The process is based on the different components in the separated materials, which means that in the working magnetic field, the different magnetic field forces and other forces received by different particles are used to separate different materials.
Froth flotation machine is generally used for the concentration of sulphide ores. The principle behind froth flotation process is that sulphide ores are preferentially wetted by pine oil whereas gangue articles are wetted by water.
In this process, the suspension of a powdered ore is made with water. Collectors like pine oil, fatty acids and xanthate are added to it. Froth stabilizers like wrestles and any line stabilized the froth. The mineral particles become wet by oils while gangue particles by water.
A rotating paddle agitates the mixture and draws air in it, as a result, froth is formed which carries the mineral particles. The froth is light and skimmed off, and it is then dried for the recovery of the old particles.
In order to realize the separation of different minerals through magnetic separation, it is necessary to ensure that there is a relatively obvious difference in force between different magnetic materials, especially the difference in magnetic field force.
Minerals in nature, due to their different atomic structures, exhibit different magnetic properties under the action of a magnetic field, and different minerals exhibit large magnetic differences.
Minerals are divided into non-magnetic minerals, weak magnetic minerals and strong magnetic minerals. Among them, strong magnetic minerals are the least. There are dozens of weak magnetic minerals, while non-magnetic minerals are numerous in variety.
Of course, the strength of magnetism between minerals is relative, and it is relative to the strength of the external magnetic field. With the development of magnetic separation technology and magnetic material technology, its definition has always changed.
After crushing to less than 70 mm, the ore need to be washed, sieved and classified, firstly got material with + 30 mm needs manual beneficiation, then 4.5-30 mm ore is dressed by jig, and last ore with -4.5 mm should be processed by roller-type strong magnetic field magnetic separator.
Wolfram ore coarse concentrate magnetic separation process: before separation, the material is crushed to-3 mm by roll crushers, then they are screened into three levels which are 0.83 ~ 3 mm, 0.2 ~ 0.83 mm and 0 ~ 0.2 mm, and finally you can get wolframite concentrate by magnetic classification beneficiation.
Crystalline graphite has good natural floatability, so froth flotation would be best for processing it. Since the size of graphite flakes is one of its most important quality indicators, a multi-stage grinding and multi-beneficiation process is adopted to remove large flake graphite as soon as possible.
Copper is the main valuable recyclable element in ore, and its content is 0.77%. Copper ore contains lightly oxidized sulfide ore, and the copper in the ore is mainly in copper sulfide minerals. For copper ore, there is 0.45% of primary copper sulfide, accounting for 60.57% of the total copper; secondary copper sulfide 0.27%, accounting for the total copper 36.34%; free copper oxide and combined copper content is relatively less.
The recoverable copper in the ore is mainly stored in chalcopyrite, chalcocite and a small amount of copper-bearing sulfide minerals such as copper blue and azurite, with a copper content of about 1.72%.
Fote Company is a manufacturer of a variety of mineral processing equipment, with 40 years of research and development experience and is committed to producing the most advanced mineral processing equipment.
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Under the new economic situation of 2012 , Chinese machinery market has produced a series of new magnetic separator equipment, which not only used in the mining industry, but also the timber industry, mining, ceramic, chemical, food and other plants! With China's sustained and rapid economic development, the steel industry is developing rapidly. the ore demand of domestic iron and steel enterprises has increased rapidly , domestic mine production has been far short of needs, therefore, they had to rely on high-quality iron ore resources abroad for decades, the majority of the beneficiation workers for China's iron ore resources "poor, fine " these two characteristics miscellaneous features carried out a lot of research work to solve many technical problems, have made great progress and development of Chinese iron ore beneficiation technology has greatly improved the overall level. Especially in recent years, the development and successful application of new efficient sorting equipment, new efficient flotation reagent, as well as a new separation process. The breakthrough has been made so that the beneficiation process indicators.The market new magnetic separator is mainly focused on the magnetic and beneficiation form, permanent magnet drum magnetic separator, dry magnetic separator, magnetic separation machine. Magnetic drum magnetic separator for cylinder surface magnetic field strength is much higher than ordinary permanent magnetic separator, easy to operate and maintain, and has a significant energy saving performance when used in various types of concentrator site. Permanent drum magnetic separator magnetic separator cylinder can be equipped with three tank that half countercurrent tank (CTB), downstream trough (CTS) and countercurrent tank (CTN), in order to adapt to the different sorting requirements. Dry magnetic separator for dry magnetic mineral separation, magnetic separation machinery, relative to wet magnetic separator liquid to use as a diluent to improve the efficiency of separation in terms of sorting minerals, dry magnetic separation machine requires dry mineral separation between particles can move freely into the independent free state, otherwise it will affect the magnetic effect, and may even cause the serious consequences of non-separation. Wet magnetic separator is commonly used in the iron ore equipment (iron ore magnetic separator) and manganese equipment (the manganese magnetic separator),which is a kind of mainstream high intensity magnetic separation beneficiation equipment. Wet permanent magnetic drum magnetic separator iron ore processing plants generally use the magnetic separator, which applies to the election of strongly magnetic mineral.
Mineral functional materials have the characteristics of low environmental load and green environmental protection in the process of processing and application. They are widely used in building materials, metallurgy, foundry, petroleum, chemical industry, daily use, plastics, rubber, paper making, coating, chemical fertilizer, feed, environmental protection, food and other industries. These include kaolin, potassium albite, and quartz sand. PTMS magnetic separator is the best choice.
Mineral functional materials is to transform mineral resources advantage for technical advantage, industry advantage and the key to economic advantage, is the indispensable raw materials, new technology revolution to the traditional industry upgrade, the formation and development of new technology industries and economic sustainable development plays an important role, is working on a new type of inorganic nonmetal functional materials. PTMS magnetic separator is the best choice.
Vigorously develop mineral functional materials, promote green and intelligent development, and support enterprise technological innovation; Emphasis should be placed on developing functional mineral materials, raising the level of comprehensive utilization of resources, and developing complete sets of technology and equipment that are standardized, mechanized, intelligent and specialized. We will carry out industrialization demonstrations of major technologies for energy conservation, environmental protection and comprehensive utilization of resources. It is necessary to accelerate the adjustment of industrial structure, implement the development of industrial clusters, accelerate technological innovation and promote the development of non-metallic mineral functional materials. Therefore, the development of mineral functional materials industry is of great significance and arduous task. PTMS magnetic separator is the best choice.
Including wet high intensity, induced roll, rare earth roll, rare earth drum, low intensity and medium intensity magnetic separators the Reading range has a magnetic solution to fit your particular processing requirements.
The WHIMS range includes 4, 16, 24 and 48 pole machines with either 68 or 120 millimetre separation matrix widths. WHIMS separators are suitable for applications requiring higher magnetic field gradients to remove weakly magnetic particles from non-magnetic concentrates. Nominal capacities range from 6 to 150 tonnes per hour.
Reading induced roll and semi-lift induced roll magnetic separators are available with 2 starts, single or twin-pass configurations in 133 millimetre roll diameter and 760 millimetre roll width or 160 millimetre roll diameter and 1000 millimetre roll width, and deliver nominal capacities of up to 12 tonnes per hour. Pilot roll laboratory scale separators are available in both induced roll and semi-lift induced roll configurations.. Typical applications include:
The rare earth magnetic separator range achieves the most effective dry separation of paramagnetic minerals at high throughput rates. The range includes Rare Earth Roll (RERS) and Rare Earth Drum (REDS) Separators which are available in a range of configurations and sizes from lab units to full production units.
Magnetic separator cylinder lined Xinhai wear-resistant rubber prolongs the service life of magnetic separation machine. Magnetic roller separator is applied to ore of particle size less than 3 mm such as magnetite, pyrrhotite, roasted ore, and ilmenite.
High-quality equipment manufacturing capabilities, focusing on the research and development and innovation of mineral processing equipment, extending the stable operation time of the equipment, and providing cost-effective services.
MAGNETIC SEPARATORS a wide range of MAGNETIX products, designed for metal separation in applications such as: mining, power industry, recycling andfood industry. The magnetic separators are installed on belt conveyors, chutes and pneumatic conveying pipelines.
Magnetic and electromagnetic separators MAGNETIX are products with the best European quality. We can get it because all steps of manufacturing of metal separators from designing, testing and production are in our factory. For building of metal separators we are using the strongest neodymium and ferrite magnets and the best quality parts from our European suppliers. The best quality is signed by ISO certificate TV NORD.
In the offer the Customer can find typical magnetic separators for typical sizes of conveyors, pipelines and chutes. MAGNETIX as a producer realizing also not typical projects where is designing of different sizes and types of magnetic separators for many industrial installations. Special metal separators can be using in explosive zones ATEX like coal mines and power plants, mils, sugar factories etc. with high explosive dustiness.
Magnetic separation utilizes the force of a magnetic field to produce differential movement of mineral particles through a magnetic field; this and the fundamental differences in the magnetic susceptibility of minerals constitutes the basis of separation to effectively obtain purification or concentration of mineral products. In addition, magnetic separators are widely used as devices to protect processing equipment such as crushers, mixers, conveyors, and screens, by the removal of tramp iron that has inadvertently gotten into the feed material and could be damaging if not removed.
High intensity dry magnetic separators are gaining popularity for the separation of para-magnetic minerals due to the cost economic factor. Induced roll magnetic separator is found to be an effective dry separator for the separation of fine particles. Separation efficiency of this separator depends on mineral characteristics and the design features of equipment along with the optimization of process variables. Present investigation focuses on the prediction and validation of separation performance of minerals while treating in induced roll magnetic separator. Prediction of the separation is expressed in terms of separation angle at which a particle leaves the rotor surface by using a modified particle flow model derived by Cakir. The validation of the model is carried by capturing the particle trajectory using an image analyzer. It is found that Cakirs mathematical model produces reliable results and a new model is proposed to increase the reliability of separation angle prediction by including the particle shape factor.
J.H.P. Watson, D. Rassi, Single-wire magnetic separation: a diagnostic tool for mineral processing. in MINTEK 50-International Conference on Mineral Science and Technology, Sandton, South Africa. The Council for Mineral Technology, Randburg, South Africa, 2630 March, 1984
D. Wang, M. Jiang, C. Liu, Y. Min, Y. Cui, J. Liu, J. Zhang, Enrichment of Fe-containing phases and recovery of iron and its oxides by magnetic separation from BOF slags. Steel Res. Int. 83, 189196 (2012)
I. Cakir, A.J.W. Rozelaar, I.S. Wells, A preliminary analysis of the mechanical forces acting on a particle on the rotor of an electrostatic separator. in Proc. XII Int. Miner. Proc. Congress, Sao Paulo (1977), p. 4
Tripathy, S.K., Singh, V. & Suresh, N. Prediction of Separation Performance of Dry High Intensity Magnetic Separator for Processing of Para-Magnetic Minerals. J. Inst. Eng. India Ser. D 96, 131142 (2015). https://doi.org/10.1007/s40033-015-0064-x
Multotec supplies a complete range of magnetic separation equipment for separating ferromagnetic and paramagnetic particles from dry solids or slurries, or for removing tramp metal. Multotec Dry and Wet Drum Separators, WHIMS, Demagnetising Coils and Overbelt Magnets are used in mineral processing plants across the world. We can engineer customised magnetic separation solutions for your process, helping you improve the efficiency of downstream processing and lower your overall costs of production.
Multotec provides a wide range of magnetic separators including: Permanent magnet Low Intensity Magnetic Separators (LIMS) or Medium Intensity Magnetic Separators (MIMS) and electromagnetic High Intensity Magnetic Separators (HIMS). Multotec provides unmatched global metallurgical expertise through a worldwide network of branches, which support your processing operation with turnkey magnetic separation solutions, from plant audits and field service to strategic spares for your magnetic separation equipment.
Whether you need to recover fast moving tramp metal, recover valuable metals in waste streams or enhance the beneficiation of ferrous metals, Multotec has the magnetic separator you require. Dry drum cobber magnetic separators provide an initial upgrade of feed material as well as a gangue material rejection stage. By improving the material fed to downstream plant processes, our magnetic separation solutions reduce the mechanical requirements of grinding, ultimately lowering overall costs. Our heavy media drum separators are ideally suited for dense media separation plants. Our ferromagnetic wet drum separators can be used in iron ore separation plants in both rougher or cleaner beneficiation applications. We also provide demagnetising solutions that reverse the residual effects that magnetic separation has on the magnetic viscosity of ferrous slurries, to return the mineral stream to an acceptable viscosity for downstream processing. These demagnetising coils generate a magnetic field that alters magnetic orientation at 200 Hz.
The trend towards larger and faster travelling conveyors in the African mining industry has highlighted the vital role of overbelt magnets. Solutions need to be optimised to such factors as belt speed and width, the belt troughing angle, the burden depth, the material density and bulk density, the expected tramp metal specifications, ambient operating temperatures and suspension height to provide maximum plant and cost efficiency. Multotec can supply complete overbelt magnet systems, from equipment supply to a turnkey service by means of its strategic partners, including even the gantry work.