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Microwave-assisted reduction roasting—magnetic

2020-11-9  The microwave-assisted reduction behaviours of two low-grade iron ores having a similar Fe content of 49wt% but distinctly different mineralogical and liberation characteristics were studied. Their performances in terms of the iron grade and recovery as obtained from statistically designed microwave (MW) roasting followed by low-intensity magnetic separation (LIMS) experiments were compared ...

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Reduction roasting–magnetic separation of vanadium ...

2015-10-27  Reduction roasting with sodium sulfate followed by magnetic separation was investigated to utilize vanadium tailings with total iron grade of 54.90 wt% and TiO2 content of 17.40 wt%. The results show that after reduction roasting–magnetic separation with sodium sulfate dosage of 2 wt% at roasting temperature of 1150 °C for roasting time of 120 min, metallic iron concentrate with total iron ...

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Microwave-assisted reduction roasting–magnetic

The microwave-assisted reduction behaviours of two low-grade iron ores having a similar Fe content of 49wt% but distinctly different mineralogical and liberation characteristics were studied. Their performances in terms of the iron grade and recovery as obtained from statistically designed microwave (MW) roasting followed by low-intensity magnetic separation (LIMS) experiments were compared.

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Environmentally-friendly oxygen-free roasting/wet

2016-1-25  A magnetic stirrer (HJ-3, Shenglan Co.) was used to separate products from the mixture after roasting. The structure of magnetic stirrer was given in Fig. 3. During the separation, the solution temperature is 20 °C, the solid/liquid ratio was 1:200, the stirring speed was 1000 rpm, and the stirring

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Iron Recovery from Bauxite Residue Through Reductive ...

2019-2-13  The magnetic iron phases in the roasting residue can be fractionated in a second stage through wet magnetic separation, forming a valuable iron concentrate and leaving a nonmagnetic residue containing rare earth elements among other constituents.

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Recycling of iron from red mud by magnetic separation ...

2014-7-20  A recycling process of iron from red mud by magnetic separation is proposed, in which iron oxide (Fe 2 O 3) in red mud transforms to magnetite (Fe 3 O 4) by anaerobic co-roasting with pyrite (FeS 2).TG-DTA and XRD results showed that hematite was reduced to magnetite by the thermo-decomposed compounds (iron monosulfide, pyrrhotite and element sulfur) of pyrite.

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Suspended Magnetic Roasting Study of Fine Grained Iron

The results show that, the siderite ore be roasted at the conditions of gas velocity is 1.7m/s, and the roasted time is 12.35s, according to magnetic separation can obtained iron concentrate grade is 65.04%, and recovery rate is 93.03%.

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Separation of manganese and iron for low-grade ...

2020-6-15  In this experiment, the optimization of roasting time was carried out under the conditions of roasting temperature 560 °C, CO concentration 35% and grind size of 65 wt% particles less than 74 μm. The effect of roasting time on magnetic separation and manganese reduction is presented in Fig. 3(d), (e) and (f), respectively.

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Beneficiation of an iron ore fines by magnetization ...

2017-11-10  Magnetization roasting and magnetic separation The bituminous coal was mixed well-distributed with hematite ore for the magnetization roasting in the muffle furnace (KJ, model KSL-1200X-J). After roasting, the roasted samples were cooled to room temperature by

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Extraction of Nickel from Garnierite Laterite Ore Using ...

2020-4-15  Abstract: In this study, segregation roasting and magnetic separation are used to extract nickel from a garnierite laterite ore. The garnierite laterite ore containing 0.72% Ni, 0.029% Co, 8.65% Fe, 29.66% MgO, and 37.86% SiO2 was collected in the Mojiang area of

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Recovery of Zn, Pb, Fe and Si from a low-grade mining

2020-1-20  obtained flotation tailing was concentrated by a low-intensity magnetic separator. The grade of iron increased from 5.45% to 43.45% and the recovery of iron reached 64.87%. Hydrochloric acid leaching was then carried out for the magnetic separation tailing and2

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Extraction of Alumina from the Magnetic Separation ...

2016-2-7  Much work has been done to recycle iron from bauxite residue via reductive roasting‐magnetic separation process, of which more than 85% iron could be recycled as powdered metallic iron, but insufficient efforts have been made to utilize the magnetic separation tailings which were rich in valuable components like aluminum, titanium etc.

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李文博 - NEU

2021-1-20  Research on fluidized magnetizing roasting and low intensity magnetic separation of eastern tailings of Anshan mining area in China [C]. IMPC 2018. Moscow. (国际选矿大会论文) [6] 李文博,周立波,韩跃新. 改性聚丙烯酰胺对赤铁矿强磁选的影响 [J]; ();2019

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Minerals Free Full-Text Extraction of Nickel from ...

In this study, segregation roasting and magnetic separation are used to extract nickel from a garnierite laterite ore. The garnierite laterite ore containing 0.72% Ni, 0.029% Co, 8.65% Fe, 29.66% MgO, and 37.86% SiO2 was collected in the Mojiang area of China. Garnierite was the Ni-bearing mineral; the other main minerals were potash feldspar, forsterite, tremolite, halloysite, quartz, and ...

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Upgrading iron and removing phosphorus of high

2019-11-20  roasting. After being transferred from the weak magnetic minerals to the strong ones, the iron was recovered by low intensity magnetic separation. During segregation roasting, new ore phases, metallic iron (Fe), a small amount of ferroferric oxide (Fe3O 4), and ferrous oxide (FeO) could be observed. The results showed that the iron concentrate ...

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童雄-国土资源工程学院

2013-1-19  ( 5 ) Yongcheng Zhou, Xiong Tong, Shaoxian Song, etc. Beneficiation of Cassiterite and Iron Minerals From a Tin Tailing with Magnetizing Roasting-Magnetic Separation Process[J]. Separation science and technology,2013,48(9):1426-1432. ( 6 ) Bo Yang

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Increasing Iron and Reducing Phosphorus Grades of

2019-6-21  Abstract: High-phosphorus oolitic iron ore, treated by suspended flash magnetic roasting, contained 42.73% iron (mainly present as magnetite) and 0.93% phosphorus (present as collophane). Low-intensity magnetic separation (LIMS) was combined with reverse flotation to increase the iron and reduce the phosphorus contents of the roasted product.

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Evaluation of reduction roasting and magnetic separation ...

Reduction roasting followed by magnetic separation on -1.18 + 0.50 mm at 1000 G recovered 72.31% Mn with a grade of 58.44% Mn, 2.52% Fe and 3.29% Si at Mn/Fe ratio of 23.22. This study reveals the influence of roasting in converting the hematite and goethite to magnetite and the response of the roasted fraction to magnetic separation.

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Zero-waste recycling method for textile dyeing sludge by ...

2020-6-17  The roasted ore was beneficiated by low-intensity magnetic separation (0.15 T magnetic field intensity). A concentrate grading 57.85% iron was obtained with 68.11% iron recovery. Magnetic roasting magnetic separation procedure was an efficient way to recover iron resources from textile printing and dyeing sludge. (2)

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Suspended Magnetic Roasting Study of Fine Grained Iron

Suspension roasting furnace was used as the reactor of magnetic roasting of fine grained siderite, and the N2 was used as the conveying gas. The results show that, the siderite ore be roasted at the conditions of gas velocity is 1.7m/s, and the roasted time is 12.35s, according to magnetic separation can obtained iron concentrate grade is 65.04%, and recovery rate is 93.03%.

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Quantitative Investigation of Roasting-magnetic Separation ...

2017-12-29  3.6.2 Enhanced magnetic-roasting and magnetic separation industrial test. The initial magnetic roasting was performed with the dosage content of 3% ~ 11% reducing agent, and roasting time 40 ~ 70 min. However, the results suggested that the magnetic reduction process did not react completely, and there is still some Fe which was not turned into ...

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Microwave-assisted reduction roasting—magnetic separation ...

The microwave-assisted reduction behaviours of two low-grade iron ores having a similar Fe content of 49wt% but distinctly different mineralogical and liberation characteristics were studied. Their performances in terms of the iron grade and recovery as obtained from statistically designed microwave (MW) roasting followed by low-intensity magnetic separation (LIMS) experiments were compared.

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(PDF) Effect of Roasting Temperature on the Magnetism of ...

The enhancement of ilmenite magnetic susceptibility by roasting is well known, and it is used routinely in the magnetic separation of mineral sands, yet surprisingly little appears to be known in ...

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Increasing Iron and Reducing Phosphorus Grades of

2019-6-21  Abstract: High-phosphorus oolitic iron ore, treated by suspended flash magnetic roasting, contained 42.73% iron (mainly present as magnetite) and 0.93% phosphorus (present as collophane). Low-intensity magnetic separation (LIMS) was combined with reverse flotation to increase the iron and reduce the phosphorus contents of the roasted product.

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Recovery and separation of iron from iron ore using ...

2017-12-29  magnet into magnetic concentrate, and non-magnetic gangue materials like quartz could be thrown into tailings after low-intensity magnetic separation. In this investigation, the effects of key variables such as the roasting temperature, and the flow rates of CO and N 2 on fluidized magnetization roasting performance were mainly studied. 2 ...

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Recovery of Lithium from China Clay Waste Using a ...

This study was aimed at recovering lithium from china clay waste using a combination of froth flotation, magnetic separation, roasting and leaching. The china clay waste produced by Goonvean Ltd contains about 0.84% Li2O and 0.36% Rb2O, present in some of the mica minerals. Among the mica minerals, zinnwaldite is the major source of lithium ...

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Factors Affecting the Upgrading of a Nickeliferous ...

2017-9-20  stage process involving reduction roasting and thermal growth in either a tube furnace or a rotary kiln furnace, followed by magnetic separation, was investigated. Thermogravimetric, differential thermal and mineral liberation analyses techniques were utilized to further understand the process.

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Magnetic Separator Iron Copper Ore Processing Line For ...

2021-8-17  For weak magnetic and lean iron, Xinhai adopts gravity separation, magnetic separation, flotation, and roasting magnetic separation used for strong magnetic iron ore and magnetic separation. [Application]: Magnetite separation production line is used to single magnetite with simple ore properties.

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(PDF) UpgradIng Iron and reMovIng phoSphorUS of hIgh ...

2021-7-22  A segregation roasting and low intensity magnetic separation technology was proposed to upgrade iron and remove phosphorus. Ores, chlorinating agent and reductant were mixed and put into roasting ...

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刘兵兵-郑州大学化工学院 - zzu.edu.cn

2020-12-15  (19) Bingbing Liu*, et al. Separation and recovery of iron and manganese from high-iron manganese oxide ores by reduction roasting and magnetic separation technique. Separation Science and Technology, 2017, 52 (7): 1321-1332.

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