Semantic Scholar extracted view of "Development of a centrifugal dry magnetic separator for separation of fine magnetite ore" by Fan Yi et al.
The authors have developed a separation production technology to recover magnetite-hematite concentrate from the tailings. A processing flowsheet includes magnetic separation, milling and gravity concentration methods.
Semantic Scholar extracted view of "Influence of different comminution flowsheets on the separation of vanadium titano-magnetite" by Xiaofei Guo et al.
These include, for example, dry jiggers, fluidized bed separators and dry magnetic separation processes for fine separation of magnetite ores. For dry magnetic separation, in recent years, especially in Australia, China and India, various processes have been developed.
Reoxidation of the reduced wustite phase to magnetite impeded the effectiveness of magnetic separation to remove the gangue. Chander and Sharma [18] found that cooling in an inert atmosphere prevented reoxidation to magnetite. The reoxidation was limited to the surface layers of the sample.
The magnetite concentrate produced from magnetization roasting of BHQ iron ore followed by low-intensity magnetic separation has proven to be the promising technique and could act as an alternative to the conventional pelletization process.
This study evaluated the effect of magnetite-promoted DIET in continuous anaerobic digestion of dairy effluent and tested the magnetic separation and recycling of magnetite to avoid continuous magnetite addition.
The magnetism of magnetic separation concentrate is significantly enhanced after high-voltage pulse discharge pretreatment, which is conducive to the efficient separation of magnetite quartzite. Quantum chemical computation showed that the bandgaps of magnetite and quartz were 0.155 and 5.797 eV, respectively.
This chapter introduces the principle of how low-grade iron ores are upgraded to high-quality iron ore concentrates by magnetic separation. Magnetite is the most magnetic of all the naturally ...
Generally on complex titanium ores it is advisable to use the combination flowsheet shown. An ore of magnetite and ilmenite may, however, employ wet magnetic separation to remove …
However, problems arise when a part of non-magnetic, hexagonal pyrrhotite is present in ore samples or when dealing with pyrrhotite entrainments within magnetic ores, such as magnetite and iron-bearing sphalerite [14]. Therefore, flotation is commonly used instead of magnetic separation to achieve the separation of pyrrhotite [15].
Simple magnetic separation for a certain magnetite mine with ultrafine disseminated lean ores has resulted in low performance, as the fine sizes and aggregation of ground mineral particles have ...
A processing flowsheet includes magnetic separation, milling and gravity concentration methods. The separation technology provides for production of iron ore concentrate with total iron content of 65.9% and recovers 91.0% of magnetite and 80.5% of hematite from the tailings containing 20.4% of total iron. The proposed technology will increase ...
In view of the embedded features of the magnetite and maghemite minerals, the stage grinding-stage low intensity magnetic separation process was adopted to upgrade the nickel slag. ...
Magnetic separation takes advantage of the fact that magnetite is strongly magnetic (ferromagnetic), hematite is weakly magnetic (paramagnetic), and most gangue minerals are not magnetic (diamagnetic).
Simple magnetic separation for a certain magnetite mine with ultrafine disseminated lean ores has resulted in low performance, as the fine sizes and aggregation of ground mineral particles have caused inefficient recovery of the ultrafine minerals. In this study, we attempt to increase the apparent sizes of target mineral particles, and improve …
A magnetite middling was used to compare the liberation effect of the magnetite fine ground by a vertical stirred mill and a ball mill. The magnetite middling contained a high content of magnetite intergrowth with the particle size mainly distributed in the range of 40–150 μm. The new generated −38 μm products were concentrated by …
Reduction roasting of the hematite and goethite to magnetite, followed by low-intensity magnetic separation and flotation.
Magnetic synthesis and reverse flotation are the key separation techniques used in the disassembly of magnetite found in magnetite ore deposits to produce high-grade products. The collective performance of these techniques can determine whether ore deposits are commercially viable or not. In recent years, extensive studies had been conducted on the …
The high magnetic permeability of magnetite, which is 65 per cent. of that of tempered steel, is much greater than the permeabilities of these minerals and permits a separation to be made in magnetic fields of low intensity.
In the present processing flowsheet, the ore is first processed with wet low-intensity drum magnetic separator to concentrate strongly magnetic vanadic titano-magnetite, with its tailings classified into coarse and fine fractions; and then the ilmenite is respectively recovered from the two fractions, by high-gradient magnetic separation ...
The present evaluation focused on incorporating magnetite recovery into a process flowsheet that produces an additional product from combustion ash. Approximately 0.5 tons of magnetite was recovered and evaluated as a substitute for mineral magnetite in dense medium coal preparation.
On the basis of these results, we proposed a process flow sheet for the beneficiation of low-grade manganese ore fines using a Floatex density separator as a pre-concentrator followed by two-stage magnetic separation.
The aim of this study is to examine the performance of wet drum magnetic separation on the recovery of magnetite from dry crushed feed. The steel industry has depended on iron (Fe) concentrate ...
A magnetite concentrate containing 68.75% Fe was produced from Sample A at an iron recovery of 97.23% through the multiple-stage wet frictional grinding-magnetic separation flowsheet.
These suggestions, along with critical validation through process development testing, can be used to guide magnetic separation technology selection to ensure optimum overall flowsheet design.
The magnetic flotation hybrid separation process, which combines column flotation and magnetic separation, was anticipated to beneficiate a representative coal sample acquired from the El-Maghara coal mine with …
A typical magnetite processing flowsheet involves comminution, wet magnetic separation and flotation, regrinding and further magnetic separation. Magnetite mineral is generally fine-grained and requires fine to ultrafine grinding (P80 <45 mum) to achieve sufficient liberation for effective beneficiation processes.
Weak magnetic iron ore was selectively transformed into strong magnetic magnetite. Compared with raw ore, there was porous and cracked structure on the surface of roasted ore and magnetic concentrate, which was conducive to magnetization reaction, magnetism and phase transformation of iron ore.
Within the field of wastewater treatment, nano-adsorbents are a significant emerging technology; however, separation of the nano-scale particles after loading has proved to be an impediment to widespread industrial implementation. Magnetic collection of nanoparticles is a potential strategy for effective separation. Nano-scale magnetite is an …
Owing to the preferential liberation of iron-bearing minerals in the primary grinding, a marketable titanium magnetite concentrate can be obtained by magnetic separation via the parallel ...
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 …
Simple magnetic separation for a certain magnetite mine with ultrafine disseminated lean ores has resulted in low performance, as the fine sizes and aggregation of ground mineral particles have ...
