The magnetic field generated by the coils of the C-shaped magnet of the Davis tube apparatus was employed to hinder magnetite flotation when floating chromite which improves the separation selectivity (Yousef et al., 2013). ... Thus, the concentrate had a minimum ash percentage of 7.78%, a maximum combustible recovery of 75.86%, …
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. • The pulse magnetic field provided high selectivity to depress magnetite particles.
The impact of sulfuric acid pretreatment on the surface property of oxidized pyrrhotite (OX-pyrrhotite) and its application in flotation desulphurization of magnetite concentrate were investigated in this study. OX-pyrrhotite using sodium butyl xanthate (BX) collector performed a poor floatability.
There is a try to purify super high-grade magnetic concentrate to prepare raw materials for ferrite magnet of non-RE PMs. Beneficiation of a high-grade (68%) iron …
The objective of this work was to make use of simple magnetic separation and reverse flotation separation [8,9,10,11], individually or combined, to improve the iron content of magnetite concentrate sample up to >72% and the silicate content of <0.2%. The product processed was able to meet the desired purification of raw material of …
More importantly, SI was increased to 6.50, indicating that PAE has better selectivity for the flotation separation of magnetite and fayalite. In addition, when DDA and PAE are collectors, the recovery of magnetite in the flotation concentrate is 65.62 % and 93.50 %, and the recovery of fayalite was 44.02 % and 25.41 %, respectively.
A total hydrophobic effect is sufficient for an effective flotation of the entire silicate complex and producing of magnetite concentrates with SiO2 content <1.0% and Fe content up to 70.3% from ...
1. Introduction. As the main type of iron ore, magnetite is the main raw material in the steel industry, which has a strict demand for its sulfur content [1], [2], [3].With the continuous improvement of the quality requirements of iron concentrate, effective desulfurization is of great significance to improve the utilization rate of iron ore resources …
To fully understand the flotation behaviour of quartz and magnetite, the effect of pH on the flotation recovery of quartz and magnetite with DDA-HCl and NaOL was presented in Fig. 5. ... The difference in contact angle results between flotation concentrate (13.92°) and tailings (47.96°) proves that the mixed collector could …
The cationic collector dodecyl amine and an iron concentrate with 65.1% total Fe, mainly as magnetite, were used for the flotation studies. In the absence of a magnetic field, the magnetite particles were fully dispersed and the iron flotation recovery linearly increased with the amine concentration.
2.1. Materials. In this experiment, vanadium-titanium magnetite concentrate from Wuling, Xinjiang was used as raw material, and its chemical composition is depicted in Table 1.It can be observed from Table 1 that the main valuable elements in the raw iron concentrate are Fe, V and Ti, with the mass fractions of TFe, TiO 2 and V …
Magnetite is an essential iron-bearing mineral. The primary method of magnetite ore beneficiation involves successive steps of crushing, grinding, and magnetic separation. Reverse cationic flotation is used at the final stage to remove silicate and aluminosilicate impurities from the magnetite concentrate and reduce silica content to …
Reverse flotation tests were conducted on the agitated magnetic concentrate feed, and the result shows a significant ... on the cationic flotation of quartz from magnetite and they found that separation efficiency increased from 0% without the magnetic field to 88% in the presence of the magnetic field.
This study adopted the direction flotation process of one roughing, three scavengings, and three cleanings to recover phosphorous from the low-grade P-bearing V-Ti magnetite tailings, obtaining the phosphorous concentrate with a P 2 O 5 grade of 31.35% and P 2 O 5 recovery of 88.02%, which were superior to the single-condition …
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.
When sulfuric acid pretreatment was adopted, the flotation desulfurization could decrease the sulfur content of magnetite concentrate from 4.50% to 0.18%. Introduction Pyrrhotite is one of the common harmful impurities in magnetite concentrate, which must be removed to meet the requirements of smelting (Arvidson et al., 2013, Cun …
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], …
Developing innovative equipment to process magnetite ore more-effectively is a way to get rid of these disadvantages of reverse flotation and improve the quality of iron concentrate.
Iron tailings, one of the solid resources, is a waste from the separation of iron concentrate using magnetic and flotation separation methods (Qin et al., 2023, ... hematite and magnetite. The concentrate composition mainly was magnetite, and the quartz was the main composition of tailings. The characteristic peak (110) of hematite …
The magnetite recovery of flotation concentrate was calculated by the following equation: "m p 1 1.59 2q 0 1.59 3 (1) where #m is the magnetite recovery in concentrate, 1 is the Fe grade of concentrate, 2 is the S grade of concentrate, 0 is the Fe grade of raw ore, 3 is the S grade of raw ore, is yield of concentrate, and the rate of Fe to S ...
A total hydrophobic effect is sufficient for an effective flotation of the entire silicate complex and producing of magnetite concentrates with SiO2 content <1.0% and Fe content up to 70.3% from ...
This paper proposes a new method to improve the reverse flotation performance of magnetite ore using a pulse magnetic field. Flotation tests were performed in a flotation column with six external ...
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 and recovery of the flotation concentrate with a collector amount of 2000 g t −1 and a proportion of PG-1 of 33.3% in the ...
The reverse cationic flotation can be regarded as a possible solution to reduce the silicate content in the magnetite concentrate obtained by WLIMS and to achieve the required silica grade of less ...
Getting magnetite concentrate with extremely high Fe grade using reverse flotation method has become increasingly important due to the enhanced requirement of …
The underflow product from this froth flotation step was a concentrate containing 65.36% Fe and 6.80% silica, and represented 70.85% by weight of the cell feed. ... into a nonmagnetic portion and a magnetic concentrate portion containing magnetite particles and locked magnetite-silicious gangue particles: thereafter subjecting the magnetic ...
In this study, firstly, an ultra-pure magnetite concentrate with 72.12% Fe and 0.09% Si was obtained by reverse flotation from superior magnetite concentrate with 68.38% Fe and 2.33% Si. Then, using the ultra-pure magnetite concentrate as raw material, high-purity reduced iron powder with Fe grade of 99.06% was prepared by …
Thus, the influence of electric flotation on hydrometallurgical processes such as separation of quartz and magnetite [Liu A. et al., 2022], antimony concentrate production [Sozhenkin P.M., 2011 ...
High-sulfur magnetite concentrate may be used as a feed for the pelletizing process in the steel production industry. In this situation, cooking pellets can ... The feed samples consisting of the iron magnetic concentrate (flotation feed) and the flotation concentrate obtained from the pilot-plant flotation tests, were separately feed to the ...
To achieve the quality of the concentrate (content of total iron is 69%, and silicon dioxide content is less than 2.7%), the refinement of the concentrate was carried out by flotation. 38 Lilaflot from AkzoNobel (Sweden) was used as a collector reagent. Dextrin from Chempack (Russia) was used as a depressor for iron minerals.
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نشانی: شماره 1688، جاده شرقی گاوک، منطقه جدید پودونگ، شانگهای، چین.
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