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Reverse flotation tests were conducted on the agitated magnetic concentrate feed, and the result shows a significant upgrade of Fe compared to that obtained from the non-agitated feed. Iron concentrations greater than 69%, and SiO 2 concentrations less than 2% with overall magnetite recoveries greater than 67% and …
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Test methods including chemical analysis, X-ray-phase, and thermogravimetric analyses together with thermodynamic calculation are adopted to reveal the transition mechanism for Fe, V and Ti in an activated reduction process. Ti in vanadium titanomagnetite concentrate is converted into Na2TiO3 at below 1150°С and then forms …
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The flotation technique is the most effective method for the silicon removal from magnetite ore, and mixed collectors exhibit superior selectivity and strong synergistic interaction in the flotation of muscovite, feldspar and spodumene ores. In this work, the flotation separation of enstatite and magnetite was investigated using mixed cationic …
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The design of the magnetic separation area should include the primary magnetic separation step, regrinding, classification by cyclones, cleaning circuit and concentrate thickening. The quality of the magnetite concentrate is very important, for that reason the magnetic rougher concentrate is reground to liberate more the magnetite.
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However, magnetite (titanomagnetite), diopside, and ilmenite appear in the LIMS tailing, indicating that most of the titanomagnetite enters the tailing for separation. ... the effect of different pH values on the grade …
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This paper proposes a new method to improve the reverse flotation performance of magnetite ore using a pulse magnetic field. Flotation tests were …
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Magnetic separation and flotation of BHQ ore could enrich the feed with 39% Fe to a concentrate having 65.3% Fe at 61.9% iron recovery [11]. ... Oxidation of synthesized magnetite concentrate obtained from the process of reduction roasting followed by magnetic separation, i.e., magnetized roasting of a low-grade iron ore [18], …
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A favorable indicator of Li 2 O grade of 5.10% with recovery of 62.99%, and Rb 2 O grade of 2.09% with recovery of 50.80% for the flotation concentrate was obtained. The difference in contact angle results between flotation concentrate (13.92°) and tailings (47.96°) proves that the mixed collector could efficiently separate quartz and spodumene.
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The magnetite recovery and desulfurization ratio in flotation concentrate as a function of pH with mixed collector (NaBX 75 g/t, (BX) 2 50 g/t, NaSiF 6 500 g/t, pine oil 46 g/t). Figure 7. The zeta potential of pyrrhotite in the absence and presence of NaBX, (BX) 2, and their mixture as a function of pH value, respectively.
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Moreover, ultra-pure magnetite concentrate is obtained from superior magnetite concentrate through reverse flotation at a price below RMB 1000 Yuan/t. In this study, firstly, the reverse flotation was adopted to prepare ultra-pure magnetite concentrate and the optimum technical parameters were determined.
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After desliming and ore washing, it can be treated by any of the following methods: 1 First float mica, then float spodumene and finally float feldspar. 2 First float spodumene, then float mica and finally float feldspar. 3 Do mix flotation of spodumene and mica and finally float feldspar to obtain spodumene concentrate.
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The ultra-pure magnetite concentrate was obtained by reverse flotation under the optimal conditions that the grinding fineness of superior magnetite concentrate was −38 μm accounting for 96 %, the cleaner times were 3, and the dosages of DDA and CS were 200 g/t and 1000 g/t.
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Combined gravity separation and magnetic separation: similar to the combined flow of flotation and magnetic separation, only the flotation is replaced by gravity separation, and the products are gravity …
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The magnetite recovery and desulfurization ratio in flotation concentrate as a function of pH with mixed collector (NaBX 75 g/t, (BX) 2 50 g/t, NaSiF 6 500 g/t, pine oil 46 g/t). Figure 7. The zeta potential of …
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An improved performance was achieved using a pulse magnetic field during the reverse flotation of magnetite ore in a flotation column. The pulse magnetic field increased the recovery and grade of concentrate Fe by 1.12% and 4.22%, respectively, compared to the corresponding values obtained using no magnetic field.
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Abstract: Reverse flotation studies on magnetite samples have revealed that the use of starch as a depressant of Fe-oxides has a hydrophilic effect on the surface of Fe-bearing …
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A Denver D-12 subaeration flotation cell of 2 L capacity was used for batch flotation studies. The sample was condi-tioned at a pulp density of 60% with the desired amounts of reagents for a predetermined time. The pulp density was di-luted to about 25% by addition of water and further condi-tioned by frother addition. Oleic acid and methyl ...
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ment technology for magnetite concentrate has been devel-oped. The final magnetic concentrate produced from rich dif-ficult-to-process magnetite quartzites after 3 stages …
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Vanadium-containing titanium magnetite is the main source of V and Ti in the internal market. About 75% Fe, 82% V, and 44% Ti pass into iron concentrate during ore enrichment [].Therefore, the question of how to improve comprehensive utilization of vanadium-titanium magnetite concentrate (VTMC) is of decisive importance for the …
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The reverse flotation of magnetite ore was improved using a pulse magnetic field. • The pulse magnetic field increased the recovery and grade of concentrate Fe. • …
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The dense media used was a combination of ferrosilicon and magnetite in water. DMS on all three composite samples was performed with a first pass to reject silicate gangue as a "floats" product at a cut-point S.G. of 2.65. ... The LCT flotation concentrate grade for COMP B was the only on-target concentrate grading >6.0% Li 2 O at 6.36% ...
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Thus, in subsequent experiments the magnetite particles were conditioned using SMO prior to the agglomeration with the binder. Here, the SMO acts as a collector, as in flotation, making the magnetite hydrophobic. In these new experiments, the particle conditioning occurred for 30 s at 22,000 rpm to disperse the SMO, followed by 30 min at 8,000 rpm.
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The results showed that an optimized cobalt–sulfur concentrate with a cobalt grade of 2.08%, sulfur content of 36.12%, sulfur recovery of 85.79%, and cobalt recovery and 84.77% were obtained by flotation process of one roughing, three sweeping, and three cleaning under roughing conditions, which employed pulp pH of 8, grinding fineness of …
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According to the quartz and magnetite flotation results mentioned later, an obvious promotive phenomenon for quartz and an obvious inhibition for magnetite accompanied by anionic collector NaOL after electrolysis. ... Although, compared with regular process, electroflotation flotation obtained a concentrate with lower Fe content …
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To further investigate the flotation performance of SCIL, the flotation tests of mixed magnetite and pyrrhotite in the mass ratio of 1:1 (25.72 % S grade) were carried out and listed in Table 2. As is shown, the grade and recovery of S in the flotation concentrate using SCIL are lower than that of SIBX, indicating that an effective reverse ...
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It is established that the researched ore can be efficiently processed using a complex gravityflotation-magnetic technology, which allows to obtain: gravity gold-containing concentrate with a mass fraction of gold of 50 g/t at recovery of 27%; copper concentrate with a mass fraction of 23.71%, gold – 18.9 g/t and silver – 60.0 g/t when ...
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Magnetite ore samples used for the research are from the slime s dam at Phalaborwa Foskor mine, South Africa. Foskor treats phosphate ore using flotation process and their tailings material contains 45 to 53% Fe in the form of magnetite. The magnetic ore sample used comprised of Silicon Oxide(1,0,1) Magnetite, syn (2,2,2), Hongquiite
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Bench flotation experiments on a skarn-type magnetite ore from Kazakhstan containing 2.0 to 3.5 percent sulphur were performed to systematically investigate the flotation behaviour of sulphides in ...
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The motion, size and morphology of magnetite aggregates and bubbles-magnetite aggregates in the flotation cell have been monitored by video microscopy. The cationic collector dodecyl amine and an iron concentrate with 65.1% total Fe, mainly as magnetite, were used for the flotation studies.
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The magnetite product from Mill No. 2 averages 65 per cent. iron and higher. The plant is arranged to re-treat this concentrate and produce a magnetite carrying in excess of 71 per cent. iron, which is sometimes made to supply the demand for the manufacture of the so-called "magnetite" electric lamps.
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