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iron extraction from oolitic iron ore by a deep reduction process

iron extraction from oolitic iron ore by a deep reduction process

Iron Extraction From Oolitic Iron Ore by a Deep Reduction ...

2011-8-1  As shown in Fig. 3, the iron grade increases continuously, but the highest value of the recovery rate appears at Issue 8 Iron Extraction From Oolitic Iron Ore by a Deep Reduction Process 11 100 95 5 4 8 90 85 90 % Y - B Recovery rate H e E b E - -80 C - . -70 Fig. 3 Effect of roast temperature on iron grade and iron recovery rate 1200 'C. Above ...

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Iron Extraction From Oolitic Iron Ore by a Deep Reduction ...

2011-8-1  A laboratory experiment was carried out to extract iron from oolitic iron ore by a deep reduction and magnetic separation technique. The raw coal with fixed carbon of 66.54% was used as the reductant. The iron was successfully extracted from the oolitic iron ore which otherwise is nearly impossible to be separated due to its extremely fine-grain and mosaic nature. The

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Iron Extraction From Oolitic Iron Ore by a Deep Reduction ...

The iron was successfully extracted from the oolitic iron ore which otherwise is nearly impossible to be separated due to its extremely fine-grain and mosaic nature. The results showed that an iron recovery rate of 90. 78% and an iron content of 92. 53% of iron concentrate could be obtained by such a technique.

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李克庆 - 北京科技大学 - 土木与资源工程学院 - X-MOL

Iron Extraction From Oolitic Iron Ore by a Deep Reduction Process,Journal of Iron and Steel Research International, 2011, 18(8).SCI: 000296267200002 [5]Li Keqing, Zhu Ming, Ni Wen. Roasting reduction-magnetic separation of oolitic-hematite and preparation ...

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Synchronous Upgrading Iron and Phosphorus Removal

2016-6-14  Li et al. extracted the iron from oolitic hematite ore by deep reduction at 1200 C for 60 min with 25% coal content followed by wet-magnetic separation of the reduced ore, with the iron powder produced containing 91.35% Fe total, 0.087% P with a

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A review on the characterisation and processing of oolitic ...

2018-9-1  Lisakovsky oolitic iron ore. A complex process involving calcining Lisakovsky oolitic iron ore from Kazakhstan followed by magnetic separation and leaching with sulphuric acid has been reported by Kokal et al. (2003). The pilot plant flowsheet showed a gravity-magnetic concentrate calcined at 900 °C to maximise phosphorus extraction in ...

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Recovery of iron from copper slag by deep reduction and ...

2013-11-20  Aiming at recovering iron from high-iron-content copper slag, this article introduced a combination technology of deep reduction and magnetic beneficiation, investigated the iron recovery efficiency and optimized the technical conditions. When coke powder with 86wt% fixed carbon was used as a reductant, iron was successfully extracted from the copper slag. Under

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Iron ore extraction techniques - ScienceDirect

2015-1-1  Iron ore was won by drilling and blasting ().As mining technology generally developed, so did drilling techniques and the explosives used. Smith (1990) reported that the Cleveland deposit was associated with a very strong stone roof rock (known as “dogger”) allowing mine drivages to be self-supporting. However, he states that in later years where the mining had

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Studies on concentration and direct reduction of the

1983-9-1  Process., 11: 115--130. Beneficiation and direct reduction of the Ramim iron ore was studied. Feed con- centrates were obtained by gravity concentration of oolites followed by wet, high-in- tensity magnetic separation. Poor liberation prohibits physical concentration of goethite from oolites. These concentrates were directly reduced with ...

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Recycling iron from oolitic hematite via microwave ...

2021-4-1  Iron extraction from oolitic iron ore by deep reduction process J. Iron. Steel Res. Int. , 18 ( 2011 ) , pp. 9 - 13 Article Download PDF CrossRef View Record in Scopus Google Scholar

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(PDF) Size Distribution Behavior of Metallic Iron ...

extraction from oolitic iron ore by a deep reduction process.’’ ... Coal-based reduction combined with magnetic separation was considered an efficient method to extract iron from nickel slag ...

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Recovery of iron from high phosphorus oolitic iron ore ...

2013-5-23  Oolitic iron ore is one of the most important iron resources. This paper reports the recovery of iron from high phosphorus oolitic iron ore using coal-based reduction and magnetic separation. The influences of reduction temperature, reduction time, C/O mole ratio, and CaO content on the metallization degree and iron recovery were investigated in detail. Experimental results show that reduced ...

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Selective enrichment of iron particles from complex ...

2020-5-1  Iron extraction from oolitic iron ore by a deep reduction process J. Iron Steel Res. Int. , 8 ( 2011 ) , pp. 9 - 13 Article Download PDF CrossRef View Record in Scopus Google Scholar

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Thermogravimetric study of coal-based reduction of oolitic ...

2015-10-10  The oolitic iron ore used in this study was collected from the Guandian Iron Mine, Hubei Province, China. The results of chemical analysis and X-ray diffraction (XRD) analysis of the iron ore sample are shown in Table 1 and Fig. 1, respectively.The contents of total Fe, SiO 2, Al 2 O 3 and CaO were 42.21%, 21.80%, 5.47% and 4.33%, respectively. The iron in the ore existed mainly as hematite ...

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[PDF] Synchronous Upgrading Iron and Phosphorus

In this paper, an effective method was developed to remove phosphorus and upgrade iron from high phosphorus oolitic hematite ore by high temperature flash reduction—a wet magnetic separation process. A thermodynamic analysis of iron and phosphorus mineral reactions and experiments with Fe-P separation process were performed, and the mechanism of phosphorus removal and beneficiation of

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Upgrading iron and removing phosphorus of high

2019-11-20  complex refractory iron ore. The methods applied to processing high phosphorus oolitic iron ore are mainly magnetic roasting [18], direct reduction [19], deep reduction, and suspension roasting, along with others [20, 21]. However, emphasize by segregation roasting on high phosphorus oolitic iron ore was rarely investigated.

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Effects of reductants on iron reduction in the direct ...

Direct reduction iron was prepared by adding dephosphorization agents during a direct reduction roasting-magnetic separation process,and the effects of reductants on the direct reduction process of high-phosphorus oolitic hematite were studied.Experimental results and SEM analysis show that the aggregation and growth of iron crystals,the increase of iron crystals' amount and the index of the ...

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A review on the characterisation and processing of oolitic ...

2018-9-1  Lisakovsky oolitic iron ore. A complex process involving calcining Lisakovsky oolitic iron ore from Kazakhstan followed by magnetic separation and leaching with sulphuric acid has been reported by Kokal et al. (2003). The pilot plant flowsheet showed a gravity-magnetic concentrate calcined at 900 °C to maximise phosphorus extraction in ...

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Processes Free Full-Text Increasing Iron and Reducing ...

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

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Effects of reductants on iron reduction in the direct ...

Direct reduction iron was prepared by adding dephosphorization agents during a direct reduction roasting-magnetic separation process,and the effects of reductants on the direct reduction process of high-phosphorus oolitic hematite were studied.Experimental results and SEM analysis show that the aggregation and growth of iron crystals,the increase of iron crystals' amount and the index of the ...

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The Direct Reduction of Iron Ore with Hydrogen

The steel industry represents about 7% of the world’s anthropogenic CO2 emissions due to the high use of fossil fuels. The CO2-lean direct reduction of iron ore with hydrogen is considered to offer a high potential to reduce CO2 emissions, and this direct reduction of Fe2O3 powder is investigated in this research. The H2 reduction reaction kinetics and fluidization characteristics of fine ...

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Processes for phosphorus removal from iron ore - a review

2.2.3.2 Flotation. There are many citations in literature on the reduction of phosphorus in iron ore through anionic flotation, using a fatty acid as collector and sodium silicate as a depressant of iron oxides, when the mainphosphorus-bearing mineral is apatite (Ranjbar, 2002 RANJBAR, M. Dephosphorization of iranian iron oxide fines by flotation.. Erzmetall, v. 55, n. 11, p. 612-62

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High Temperature Materials and Processes

1984-1-1  Reduced iron (1.74% P) is produced from oolitic hematite ore by coal-based reduction and magnetic separation. To realize the comprehensive utilization of Fe and P, the dephosphorization behavior of the reduced iron is investigated in the presence of CaO–SiO 2 –FeO–Al 2 O 3 slag.

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Jianwen YU Research Assistant PhD Northeastern ...

In this study, a process of magnetizing roasting followed by low-intensity magnetic separation (MR-LMS), which is used to separate and recover iron from a low-grade carbonate-bearing iron ore ...

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Iron ore BHP

What is iron ore? Iron ores are rocks and minerals from which metallic iron can be extracted. There are four main types of iron ore deposit: massive hematite, which is the most commonly mined, magnetite, titanomagnetite, and pisolitic ironstone. These ores vary in colour from dark grey, bright yellow, or deep purple to rusty red.

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Reaction Mechanism and Thermodynamics of

iron particles recovered after magnetic separation both from ferric oxide and mill scale is studied by electron probe microscopy analyzer. Keywords: Segregation Roasting, Iron Oxide, Alkali Chloride, Thermodynamics, Reaction Mechanism, EPMA, SEM 1. Introduction The segregation process of copper oxide ore is a technique

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Effect of Na2CO3 Addition on Carbothermic Reduction of ...

Copper smelting slag is a useful secondary resource containing high iron and copper, which can be utilized to prepare crude Fe-Cu alloy by a direct reduction–magnetic separation process for making weathering-resistant steel. However, it is difficult to recover iron and copper from the slag by direct reduction since the iron mainly occurs in fayalite and the copper is held in copper sulfide.

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How Is Iron Extracted From the Earth? - Reference

2020-3-26  Iron ores in the form of hematite (ferrous oxide) and magnetite are removed from the earth through mining. The use of heavy mining equipment is necessary to dig out large pits in an area with a large deposit of iron ore; however, because iron does not

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Metal Extraction Flashcards Quizlet

extract metal ore: reduction using carbon electrolysis. ... extract cheap iron to get expensive copper. Displacement reaction to extract copper - equation. ... separates copper from ore in process leachate contains copper leachate extracted (filtering) Leachate. solution produced by bioleaching.

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