Efficient enrichment of iron concentrate from iron tailings via
The disposal of iron ore tailings leads to environmental threat and serious security because of their tiny particle size and large storage. In this paper, suspension A new approach for recovering iron from iron ore tailings using suspension magnetization roasting: A pilot-scale study. A new approach for SMR was developed for A new approach for recovering iron from iron ore tailings
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通过磁化焙烧-磁选从低强度磁选 (LIMS) 尾矿中分离铁和稀土
低强度磁选（LIMS）尾矿是磁铁矿磁选后获得的常见副产品，含有赤铁矿以及稀土矿物独居石和氟碳铈矿。由于赤铁矿和稀土矿物磁性较弱，磁选效率较低。Abstract. Refractory iron ore is often discarded as tailings. This causes a great waste of iron resources. In this paper, the flash roasting-magnetic separation process was designed by combining the magnetic Recovering Iron Concentrate from Low-Grade
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Efficient iron recovery from iron tailings using ScienceDirect
Evaluating SRMS technology for iron tailings recovery. Applying our SRMS technology, we were able to obtain qualified iron concentrate with a 67.09% Fe grade Refractory iron ore is often discarded as tailings. This causes a great waste of iron resources. In this paper, the flash roasting-magnetic separation process (PDF) Recovering Iron Concentrate from Low-Grade Siderite Tailings
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An Novel Method for Iron Recovery from Iron Ore Tailings
Pre-concentration followed by magnetization roasting and magnetic separation process was well recognized to be very effective in recycling iron from iron The results showed that iron concentrates with iron grade of 65.01% and recovery of 89.07% could be obtained under conditions of CO concentration 30%, Efficient enrichment of iron concentrate from iron tailings via
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Minerals Free Full-Text Recovering Iron from
Abstract. Iron ore tailings (IOTs) are a form of solid waste produced during the beneficiation process of iron ore concentrate. In this paper, iron recovery from IOTs was studied at different points during a The obtained concentrate and tailings were dehydrated, dried, and weighed to determine the desired content of the component from which the recovery rate would be calculated. 2.3. Analysis and Detection Minerals Free Full-Text Comprehensive
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Recovery and kinetics of gold and iron from cyanide tailings
The gold content of cyanide tailings generally exceeds 3 g/t, and the grade of iron in cyanide tailings is often more than 30% (Wei et al., 2014, Robinson, 1988, Shang et al., 2011). The mechanism of recovering gold and iron from cyanide tailings and raising the economic benefit of the enterprise is an urgent problem.This study presents a fluidization roasting technology for siderite-bearing iron ore without the use of carbon additives. Samples of Jingtieshan iron ore were subjected to fluidization magnetization Fluidization Roasting Technology of Jingtieshan
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Recovery of magnetite-hematite concentrate from iron
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 production of the concentrate at a dressing plant and reduce environmental impact. 1 IntroductionMagnetization roasting is one of the most effective way of utilizing low-grade refractory iron ore. However, the reduction roasting of siderite (FeCO3) generates weakly magnetic wüstite, thus reducing iron recovery via weak magnetic separation. We systematically studied and proposed the fluidized preoxidation-low-temperature reduction Fluidized magnetization roasting of refractory siderite-containing iron
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High-efficiency extraction of iron from early iron tailings via
Recently, the efficient utilization of early iron tailings has become a research hotspot. The early iron tailings of Anshan Iron and Steel Group (ANSTEEL) in China, which contain high SiO 2, low Fe, low S, and low P, have high reuse value. However, the economical iron concentrate is difficult to obtain via the traditional beneficiation processLeaching titaniferous magnetite concentrate with alkali solution of high concentration under high temperature and high pressure was utilized to improve the grade of iron in iron concentrate and the grade of TiO2 in titanium tailings. The titaniferous magnetite concentrate in use contained 12.67% TiO2 and 54.01% Fe. The thermodynamics of the Leaching Titaniferous Magnetite Concentrate by Alkaline
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(PDF) Desulfurization of hematitic concentrate of iron
E. Panahi, 2010."Feasibility of production of iron ore concentrate from new tailings of the mineral processing plant of iron ore of Gol-E-Gohar of Sirjan" M.S. Thesis, Kashan University.The results showed that an iron concentrate with iron grade of 63.04% and total iron recovery of 48.40% was obtained under the optimum roasting conditions: feeding rate of 111.70 kg/h, roastingEfficient enrichment of iron concentrate from iron tailings via
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Efficient iron recovery from iron tailings using ScienceDirect
Iron tailings have been successfully employed as a material for buildings (Han et al., 2019, Applying our SRMS technology, we were able to obtain qualified iron concentrate with a 67.09% Fe grade and achieved an 85.93% iron recovery (Fig. 2), while the Fe grade of the final tailings produced was only 2.33% (Yanjun et al., 2020). ThisAbstract In order to recycle valuable elements from solid mine waste, this study took iron-bearing tailings as the research object and involved existing Hanging Vibrating Cone (HVC) concentrator separation technology to explore and determine the most appropriate processing parameters of this equipment for the experiment sample Study on Process for Recovering Iron Concentrate from Iron
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Improved iron recovery from low-grade iron ore by efficient
At this time, iron minerals could be effectively recovered by a grinding and low-intensity magnetic separation process. Under the optimum roasting and magnetic separation conditions, the iron grade of magnetic concentrate reached 66.40 %, the iron recovery was 92.44 %, and the sulfur content decreased significantly from 0.547 % to The grade and recovery of iron concentrate obtained from the magnetic separation reached 60.9% and 74.6%, respectively, by regulating the magnetic field intensity of 70 kA/m. While the iron concentrate could be directly traded, the tailings of Si grade 28.4% (w/w) could be used in building materials. The proposed technology can realize Sustainable processing of gold cyanide tailings: Reduction
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Minerals Free Full-Text Recovering Iron from Iron Ore Tailings
Iron ore tailings (IOTs) are a form of solid waste produced during the beneficiation process of iron ore concentrate. In this paper, iron recovery from IOTs was studied at different points during a process involving pre-concentration followed by direct reduction and magnetic separation. Then, slag-tailing concrete composite admixtures The results showed that with the appropriate SMR conditions — a roasting temperature of 520 °C, CO flow rate of 4.0 m 3 /h, N 2 flow rate of 2.0 m 3 /h, and feeding rate of 100 kg/h — an iron concentrate with a total iron grade (TFe) of 60.18% and iron recovery of 90.17% could be obtained. Compared to the traditional process of shaftRecovery of metals from the roasted lead-zinc tailings by
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Reduction roasting–magnetic separation of vanadium tailings
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 The generation of tailings from iron mining has been increasing in recent years, reaching an output of more than 500 million tons in 2015 due to the recent growth of the steel industries that generate this type of waste during the beneficiation process of iron ore concentrate. The same problem that occurs in Bayan Obo is common in other miningApplied Sciences Free Full-Text The Potential of Iron Ore Tailings
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Flexural behavior evaluation and energy dissipation
@article{Jiang2022FlexuralBE, title={Flexural behavior evaluation and energy dissipation mechanisms of modified iron tailings powder incorporating cement and fibers subjected to freeze-thaw cycles}, author={Ping Jiang and Ye Chen and Wensheng Wang and Jiandong Yang and Haoyun Wang and N. Li and Wei Wang}, journal={Journal X-ray diffraction (XRD) analysis showed that the main mineral compositions of the mine tailings and concentrate of the mine tailings were quartz (SiO 2), pyrite (FeS 2), and The elution rate of copper and iron from the mine tailings was calculated to be 4.58% and 0.46% respectively. On the other hand, the solid residue Metals Free Full-Text Copper Recovery and Reduction of
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