dephosphorization iron ore oolitic
dephosphorization iron ore oolitic
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dephosphorization iron ore oolitic

Dephosphorization of unroasted oolitic ores through ...

2019-3-1  The oolitic type of iron ore, with estimated reserves of 377 billion tons, are a prime example of this type of ore (Hemandez et al., 2012). The phosphorus content of oolitic iron ores can be as high as 0.7–1% (Gooden et al., 1974; Jin et al., 2006; Kokal et al., 2003). The main issue with oolitic ores is that they not only contain high levels ...

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Dephosphorization Treatment of High Phosphorus Oolitic ...

The dephosphorization of high phosphorus iron ore has been researched in many countries, such as physical separation, 6,7,8,9,10) bio-leaching, 11,12) flotation, 13,14) hydrometallurgical process. 15,16) But the oolitic structure of the ore prevents the effective use of physical concentration and flotation separation, and necessitates the use ...

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DEPHOSPHORIZATION OF OOLITIC GOETHITE IRON ORE

A magnetic concentrate with total iron grade of 92.7% and phosphorus content of 0.09% was obtained from an oolitic hematite ore containing 48.96% iron and 1.61% phosphorus when reduced in the ...

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DEPHOSPHORIZATION OF OOLITIC GOETHITE IRON ORE

2020-4-6  specification for phosphorus in iron ore is usually below 0.05~0.1%. Oolitic goethitic iron ore has huge reserve in the world, but it often has high phosphorus content and can therefore not be used directly in steel industry. As a result, the dephosphorization of this type of iron ore is of significant economical importance.

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Dephosphorization of high phosphorus oolitic hematite by ...

2017-8-1  Most of the earlier studies on dephosphorization by acid leaching were conducted to study the effect of time, temperature, acid concentration, etc. (Xia et al., 2011, Yu and Muhammed, 1990) The leaching kinetics of the high phosphorus oolitic iron ore was rarely investigated, except for the H 2 SO 4 leaching kinetics of the typical oolitic iron ...

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Strengthening iron enrichment and dephosphorization of ...

2019-5-26  The efficient development and utilization of high-phosphorus oolitic hematite is of great strategic significance for the sustainable supply of iron-ore resources in China. In this paper, the mechanism of high-temperature pretreatment for enhancing the effect of iron enrichment and dephosphorization in the magnetization roasting–leaching process was studied by X-ray diffraction

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高磷鲕状铁矿石直接还原-磁选提铁降磷扩大试验研究 - USTB

2020-11-29  The pilot study of high-phosphorus oolitic iron ore for iron recovery and dephosphorization by direct reduction-magnetic separation[J]. Chinese Journal of Engineering. doi: 10.13374/j.issn2095-9389.2020.11.29.002

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Phosphorus Removal of High Phosphorous Oolitic Iron Ore ...

J. T. Yu 17) and M. J. Fisher-White 20) have studied the dephosphorization effect on the goethitic iron ore and the oolitic hematite iron ore respectively by sulphuric acid leaching method. With suitable treatment, the phosphorus can be removed with little dissolution of iron and lower acid consumption.

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Reaction Behavior of Phosphorus in Coal-Based

2017-5-9  Oolitic hematite ore, a standard type of refractory iron ore, is mainly distributed in America, France, Russia, Pakistan, China, and other countries [4–6]. In China, the explored reserves of oolitic hematite ores reached 3.72 billion tons, which accounts for

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录用稿件,非最终出版稿 - USTB

2021-2-5  a pilot-scale experiment on iron recovery and dephosphorization from high-phosphorus oolitic iron ore was investigated using coal-based direct reduction, followed by magnetic separation. The results showed that Under the optimum conditions, the grade and

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DEPHOSPHORIZATION OF OOLITIC GOETHITE IRON ORE

2020-4-6  specification for phosphorus in iron ore is usually below 0.05~0.1%. Oolitic goethitic iron ore has huge reserve in the world, but it often has high phosphorus content and can therefore not be used directly in steel industry. As a result, the dephosphorization of this type of iron ore is of significant economical importance.

More

Dephosphorization of high phosphorus oolitic hematite by ...

2017-8-1  Most of the earlier studies on dephosphorization by acid leaching were conducted to study the effect of time, temperature, acid concentration, etc. (Xia et al., 2011, Yu and Muhammed, 1990) The leaching kinetics of the high phosphorus oolitic iron ore was rarely investigated, except for the H 2 SO 4 leaching kinetics of the typical oolitic iron ...

More

Strengthening iron enrichment and dephosphorization of ...

The efficient development and utilization of high-phosphorus oolitic hematite is of great strategic significance for the sustainable supply of iron-ore resources in China. In this paper, the mechanism of high-temperature pretreatment for enhancing the effect of iron enrichment and dephosphorization in the magnetization roasting-leaching process was studied by X-ray diffraction (XRD), vibration ...

More

Reaction Behavior of Phosphorus in Coal-Based

2017-5-9  Oolitic hematite ore, a standard type of refractory iron ore, is mainly distributed in America, France, Russia, Pakistan, China, and other countries [4–6]. In China, the explored reserves of oolitic hematite ores reached 3.72 billion tons, which accounts for

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Simultaneous Recovery of Iron and Phosphorus from a

2017-5-22  Unlike previous dephosphorization studies, the present work complies with a concept to recover phosphorus within the utilization of high-phosphorus oolitic iron ores to prepare Fe-P alloy for high-phosphorus steel production.Simultaneous enrichment of iron and phosphorus can be achieved by directly alloying the high-phosphorus oolitic iron ore at high reduction temperatures (≥1623 K).

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(PDF) Reaction Behavior of Phosphorus in Coal-Based ...

2016-4-8  iron from high phosphorus-containing oolitic hematite ore. Given that high quantities of dephosphorization agent are needed to obtain low phosphorus reduced iron, a novel approach

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Influence of Sodium Salts on Reduction Roasting of High ...

2021-9-21  ABSTRACT The reduction roasting followed by magnetic separation process is considered to be a suitable method to treat the high-phosphorus oolitic iron ore. Currently, the dephosphorization mechanism of additives such as CaCO 3, Ca(OH) 2, Na 2 SO 4, and Na 2 CO 3 on the reduction roasting of the iron ore in which phosphorus occurs in apatite have been thoroughly studied.

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Metals Free Full-Text Reaction Behavior of Phosphorus ...

Coal-based reduction followed by magnetic separation is an effective way to recover iron from high phosphorus-containing oolitic hematite ore. Given that high quantities of dephosphorization agent are needed to obtain low phosphorus reduced iron, a novel approach is proposed by the authors. Without prior phosphorus removal, the phosphorus was enriched in the reduced iron during a reduction ...

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高鹏副教授硕士生导师

2019-3-19  1. Gao P, Li G F, Han Y X, et al. Reaction Behavior of Phosphorus in Coal-Based Reduction of an Oolitic Hematite Ore and Pre-Dephosphorization of Reduced Iron[J]. Metals - Open Access Metallurgy Journal, 2016, 6(4):82. 2.

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李克庆_百度百科

Iron Extraction From Oolitic Iron Ore by a Deep Reduction Process,Journal of Iron and Steel Research International, 2011, 18(8).SCI: 000296267200002 [1] [5]Li Keqing, Zhu Ming, Ni Wen.

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Dephosphorization Behavior of High-Phosphorus Oolitic ...

2018-11-5  Heavy dependence upon imported iron ore concentrates is one of the most significant challenges for China’s pyrometallurgical industry. In China, high-phosphorus oolitic hematite constitutes approximately 11.1% of iron reserves, hence the application of recovering these refractory ores can be considered based on current situation [1].

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Strengthening iron enrichment and dephosphorization of ...

The efficient development and utilization of high-phosphorus oolitic hematite is of great strategic significance for the sustainable supply of iron-ore resources in China. In this paper, the mechanism of high-temperature pretreatment for enhancing the effect of iron enrichment and dephosphorization in the magnetization roasting-leaching process was studied by X-ray diffraction (XRD), vibration ...

More

(PDF) Reaction Behavior of Phosphorus in Coal-Based ...

2016-4-8  iron from high phosphorus-containing oolitic hematite ore. Given that high quantities of dephosphorization agent are needed to obtain low phosphorus reduced iron, a novel approach

More

Experiment Study on the High-Phosphorus Hematite ...

In the paper, the experimental research on dephosphorization and iron yield for high-phosphorus oolitic hematite by coal-based carbothermal reduction was carried out. It indicated that microwave can speed up the rate of carbothermal reduction of iron ore and strengthen the effects of dephosphorization and increasing iron content. The dephosphorization rate and iron yield of high-phosphorus ...

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高磷鲕状赤铁矿气化脱磷动力学研究

2014-12-9  Abstract:In order to explore the dephosphorization mechanism in the sintering process of high-phosphorus oolitic hematite, the kinetics of gasification dephosphorization of high-phosphorus iron ore were studied with heating rate at 10, 15 and 20 ℃/min 2 O 3

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Development of Technologies for High Phosphorus Oolitic ...

2011-4-7  This paper reports the experimental results on ore beneficiation, pretreatment of hot metal with high phosphorus and dephosphorization during direct reduction. It would provide technology support for the efficient utilization of high phosphorus Oolitic Hematite, and also provide technology for industrial demonstrating projects.

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Metals Free Full-Text Reaction Behavior of Phosphorus ...

Coal-based reduction followed by magnetic separation is an effective way to recover iron from high phosphorus-containing oolitic hematite ore. Given that high quantities of dephosphorization agent are needed to obtain low phosphorus reduced iron, a novel approach is proposed by the authors. Without prior phosphorus removal, the phosphorus was enriched in the reduced iron during a reduction ...

More

Development of Technologies for High Phosphorus Oolitic ...

2011-4-7  This paper reports the experimental results on ore beneficiation, pretreatment of hot metal with high phosphorus and dephosphorization during direct reduction. It would provide technology support for the efficient utilization of high phosphorus Oolitic Hematite, and also provide technology for industrial demonstrating projects.

More

Removal of Phosphorus from High Phosphorus Iron Ores

In the process of resource utilization of high phosphorus iron ores, phosphorus should be removed first. Compared to other dephosphorization methods, selective leaching with acid has special advantages such as high dephosphorization ratio, low iron loss and so on. However, a large amount of acidic wastewater containing phosphorus was produced after acid leaching.

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李克庆_百度百科

Iron Extraction From Oolitic Iron Ore by a Deep Reduction Process,Journal of Iron and Steel Research International, 2011, 18(8).SCI: 000296267200002 [1] [5]Li Keqing, Zhu Ming, Ni Wen.

More