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The purities of hematite, quartz, and magnetite were 97.3%, 99.4%, and 93.8%, respectively. Elemental compositions of minerals are shown in Table 1.Total iron and ferrous iron contents were determined with the standard titrimetric method using potassium dichromate as titrant after reduction of the iron (III) by tin (II) chloride and/or …
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Hematite is commonly upgraded in China using a reverse anionic flotation process with starch as depressant for hematite, Ca 2+ as activator and fatty acids as collector for quartz. The Anshan type of hematite is well known for its low grade, fine dissemination, difficulty in upgrading, and huge reserve in China. To investigate effects …
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In order to enhance the reverse flotation effect of hematite, dodecyl trimethyl ammonium chloride (DTAC) and a mixed anionic/cationic collector of DTAC and tall oil were selected for flotation studies on quartz and hematite. Surface tension tests, FT-IR, XPS analysis, and molecular dynamics (MD) simulations were also conducted in …
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Request PDF | Statistical analysis and optimization of reverse anionic hematite flotation integrated with nanobubbles | The low-grade refractory hematite in Anshan, China is fine disseminated in a ...
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At present, the good classification index has been achieved by anionic reverse flotation technology for the Anshan hematite, but the grade of the tailing is still high. ... An experimental research to improve the grade of a magnetic concentrate from a concentrator using the cationic reverse floatation technology in the countercurrent bubble ...
DetailsThe low-grade refractory hematite in Anshan, China is fine disseminated in a huge reserve and its flotation performance is often not satisfactory.
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DOI: 10.1016/S1003-6326(11)60762-0 Corpus ID: 53494822; Shear hydrophobic flocculation and flotation of ultrafine Anshan hematite using sodium oleate @article{Yin2011ShearHF, title={Shear hydrophobic flocculation and flotation of ultrafine Anshan hematite using sodium oleate}, author={Wan-zhong Yin and Xiao-sheng Yang …
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1. Introduction. Flotation is one of the prime mineral processing methods that has found wide application from separation of complex ores such as sulphides of lead–zinc and copper–zinc to platinum, nickel and gold hosting sulphides, to oxides like hematite, cassiterite, oxidised minerals such as malachite, cerussite and finally to non-metallic …
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The effects of carbonate minerals (dolomite and siderite) on the flotation of hematite using sodium oleate as a collector were investigated through flotation tests, supplemented by dissolution measurements, solution chemistry calculations, zeta-potential measurements, Fourier transform infrared (FTIR) spectroscopic studies, and X-ray …
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Introduction. Due to the substantial iron and steel demands in various industries, low-grade finely disseminated iron oxide ores with complex mineralogy have been accounted as iron resources and processed with different upgrading techniques 1.It was well-documented that reverse (cationic/anionic) flotation separation is the most comprehensive processing …
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Therefore, the pre-adsorption of PASP on the hematite surface hinders the adsorption of the collector DDA. Therefore, the depressant PASP selectively inhibits hematite in the reverse flotation of hematite from quartz. 4. Conclusions. Hematite and quartz have excellent floatability and were difficult to be separated by flotation using …
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The hematite and magnetite originated from Anshan ore deposit in Liaoning Province, China. Quartz was mined in Longyan in Fujian Province, China. ... Application of a fungal cellulase as a green depressant of hematite in the reverse anionic flotation of a high-phosphorus iron ore. Minerals Engineering, Volume 167, 2021, Article 106903.
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The low-grade refractory hematite in Anshan, China is fine disseminated in a huge reserve and its flotation performance is often not satisfactory. ... and collector TD-II used in the reverse hematite flotation in the presence of nanobubbles. The results show that with changing for example the starch dosages, nanobubbles improved the iron …
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The iron ores consist of iron oxides mainly of magnetite (Fe 3 O 4) and hematite (Fe 2 O 3). However, the average grade of these ores in China is less than the cut-off grade of 45% 1 .
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Comparison between two-step and reverse otation circuits. The two-ste p and revers e otation re sults are s hown in Table 6. It shows t hat the product quality of the reve rse o tation. circuit is ...
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The results of the monomineral flotation test revealed that, under the same conditions, the mixed collector surpassed the single DTAC. Quartz achieved a recovery rate of 94.67%, while hematite reached 8.69%, at a natural pH of around 7.0 and 298 K, indicating potential for the successful reverse flotation of hematite.
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In the lP reverse cationic flotation of iron ores corn starch is often used as depressant for hematite while the silica-containing minerals are floated using amine as collector …
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To explore the flotation feasibility and flotation law of iron minerals from amphibole-type iron oxide ore with full-size minerals, a systematic study on the flotation behaviors of single minerals hematite, quartz, and amphibole was carried out with the anionic reverse flotation system. The effects of collectors, depressants, activators, and …
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The effects of partially replacing amine collectors by a commercial frother in a reverse cationic hematite flotation [J]. Heliyon, 2021, 7(3): e06559. ... ZHOU Yu-ling. Flotation mechanism of novel ether acid collector CY-1 to chlorite and its application in reverse floatation of iron ores [J]. The Chinese Journal of Nonferrous Metals, 2020, 30 ...
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The low-grade refractory hematite in Anshan, China is fine disseminated in a huge reserve and its flotation performance is often not satisfactory. In this study reverse flotation...
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Reverse cationic flotation is currently the main processing technique for upgrading fine hematite from silicates. Flotation is known as an efficient method of mineral enrichment that deals with ...
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Hematite reverse flotation pulp is seriously deteriorated by chlorite due to the dissolution of chemical components (e.g., metal ions) on its surface. ... China), while pure hematite and chlorite were purchased from Anshan city (Liaoning Province, China). Prior to conducting the experiment, the high-grade raw ore was carefully crushed, and high ...
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Reverse flotation desilication with anionic collector sodium oleate (OL) and activator Ca 2+ is a common beneficiation method to purify hematite. Herein, the separation mechanism of hematite and quartz were systematically investigated by experiments and DFT calculations with the effect of surface hydroxylation fully considered.
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The invention relates to a manufacturing method of a collector for three functional groups of lean hematite anionic reverse flotation, which comprises the following steps: the first step: enabling a mixture of the following components in parts by weight to react for 3-4 hours at the temperature of 40-100 DEG C so as to get a high-efficient auxiliary agent: 100 parts …
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The test results show that the separation process of high intensity magnetic-reverse flotation can obtain an iron concentrate grading about 66.62% at a recovery of 58.38％ …
DetailsFloatation tests were carried out under 28°C with mixed magnetic concentrates of Donganshan sintering plant, and optimal test conditions were obtained, in which a direct floatation was undertaken ...
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Jintian et al. indicated that the reverse flotation-hydrogen reduction could be used to produce the ultra-pure magnetite concentrate (72.12% Fe and 0.19% SiO 2) when d 80 was − 37 μm 12.
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In this study, statistical design, analysis and optimization of operational parameters of reverse anionic flotation of hematite were investigated with a mechanical flotation cell …
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The Anshan type of hematite is well known for its low grade, fine dissemination, difficulty in upgrading, and huge reserve in China. ... In this study, the quartz-hematite reverse flotation ...
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The invention relates to a reverse flotation process for hematite during mine production, in particular to a high-concentration reverse flotation process for hematite. The high-concentration reverse flotation process for the hematite comprises the steps of feeding, one-time rough concentration, one-time concentration and two-time scavenging, wherein …
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The reverse cationic flotation route widely used in the iron ore industry is less selective for alumina/hematite separation than for quartz/hematite separation. Das et al.[28] studied the beneficiation of some alumina-rich iron ores and reported that to reduce alumina content by 4%, as much as 45% Fe has to be lost in the beneficiation process.
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For the high iron grade in tailings of Anshan-type hematite reverse flotation process, chemical element composition, phase composition, particle size distribution and mineral dissociation degree ...
DetailsCorn starch was acquired from Dong Anshan flotation plant and used as the depressant for hematite. It was dissolved in distilled water at 90 °C on a hotplate by the addition of 20 wt.-% NaOH. Spectroscopic grade potassium bromide (KBr; Sinopharm Chemical Reagent Co., Ltd., China) was employed as a carrier to conduct FT-IR detection.
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The hematite and chlorite were taken from Anshan in Liaoning Province, China. Quartz was selected from Linqu in Shandong Province, China. High grade raw ores were crushed, ground ... In order to study the effect of citric acid on chlorite in hematite reverse flotation system, the dosage of citric acid with different hematite granularity size ...
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Hematite and quartz minerals with high purity were purchased from the geological museum of China. Hematite was crushed, ground and wet-sieved to a size fraction of −0.074 mm +0.038 mm for the flotation tests.The quartz sample was crushed, ground in a porcelain ball mill, and wet-sieved in distilled water to accumulate the −0.074 …
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Siderite, hematite and quartz mineral samples were achieved from Anshan Iron and Steel Group Corporation (AISG) in China. Siderite ore was hand-sorted and ground to −0.150 +0.010 mm.While hematite and quartz ores were hand-sorted and ground to −0.150 +0.045 mm. Chemical component of samples are listed in Table 1 and X-ray …
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Possible approaches for improving hematite flotation performance have been proposed based on the results from this study. Keywords: process mineralogy; hematite; quartz; …
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The adhesion behavior between particles in the pulp will seriously affect the index of concentrate. In this paper, the effect of citric acid on chlorite in hematite reverse flotation system was studied. The flotation test and settlement test of artificial mixed ore showed that a lower dosage of citric acid could significantly improve the removal rate of …
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The low-grade refractory hematite in Anshan, China is fine disseminated in a huge reserve and its flotation performance is often not satisfactory.
DetailsBased on the surface difference of hematite and quartz in solution, a hydroxyl-containing polyamine cationic surfactant was designed and screened with the assistant of computer simulation (molecular dynamics (MD) simulation and density functional theory (DFT) calculation) to enhance the separation efficiency in the reverse …
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