dephosphorization of iron ore

Dephosphorization of High-Phosphorus Iron Ore Using ...

Results show that the three strains of A. niger could grow well in the broth, and effectively remove phosphate from high-phosphorus iron ore during the experiments. Meanwhile, the total iron in the broth was also increased. Acidification of the broth seemed to be the major mechanism for the dephosphorization by these strains.

Dephosphorization of Iron Ore Bearing High

domestic low grade iron ores for the iron and steel plant in China, as China has a large deposit of high phosphorous iron ore with existing reserve of 7.45 billion tons which is unused in any large scale.1) The dephosphorization process for high phosphorous iron ores has been studied for

Dephosphorization of High-Phosphorus Iron Ore Using ...

2015-3-31 · High-phosphorus iron ore is traditionally dephosphorized by chemical process with inorganic acids. However, this process is not recommended nowadays because of its high cost and consequent environmental pollution. With the current tendency for development of a low-cost and eco-friendly process, dephosphorization of high-phosphorus iron ore through microbial process with three different

Dephosphorization of Nigerian Agbaja Iron Ore by ...

2018-12-7 · proven Nigerian iron ore deposit with phosphorus content in the range of 1.4-2.0%. In this study, dephosphorization of Agbaja iron ore using three acids and in different combinations were investigated. The design of experiment for the valuation of interactive factorial effects on phosphorus removal was also investigated.

A hydrometallurgical process for the dephosphorization of ...

1989-5-1 · A hydrometallurgical process for the dephosphorization of iron ore. HydrometaUurgy, 21: 277-292. A process is proposed for the dephosphorization of iron ore. The process consists of an inte- grated treatment for the removal of the phosphorus from the ore by leaching and further process-

A hydrometallurgical process for the dephosphorization of ...

A process is proposed for the dephosphorization of iron ore. The process consists of an integrated treatment for the removal of the phosphorus from the ore by leaching and further processing of the leach solution. Phosphoric acid is extracted by isoamyl alcohol (iAmOH) and stripped by nitric acid solution.

Advance in dephosphorisation of high phosphorus iron

2016-10-1 · In order to make good use of huge amount of high phosphorous iron ore for the ironmaking industry, the characteristics and advances in the dephosphorization technologies of high phosphorus iron ore were introduced, such as mill run, chemical leaching, bio-leaching and high-temperature dephosphorization methods.

Synthesis and Dephosphorization of Iron Manganese ...

Fe-Mn composite oxide has been successfully synthesized using manganese ore in Guilin, Guangxi as an effective way to dephosphorize by acid leaching. Studied about the optimum conditions of acid leaching and the dephosphorization of Fe-Mn composite oxide. Process of the sulfuric acid concentration 2.1mol/L, solid-liquid ratio 1:4, reaction time 3.5h, the reaction temperature 90°C, the iron ...

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

Effect of additives on iron recovery and dephosphorization ...

2021-3-4 · The effect of CaCO 3 , Na 2 CO 3 and CaF 2 on the reduction roasting-magnetic separation of high-phosphorus iron ore containing phosphorus as Fe 3 PO 7 and apatite was investigated. The result shows that Na 2 CO 3 had the best effect on iron recovery and dephosphorization, followed by CaCO3, while CaF2 had almost no influence.

Dephosphorization Treatment of High Phosphorus Iron

This paper proposes a novel process for the pre-treatment of high phosphorus iron ore by pre-reduc- tion, air jet milling and screening methods. The dephosphorization behavior was evaluated as a ...

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.

journals on dephosphorization of iron ore

dephosphorization of beneficiated ore. ... iron and manganese minerals it’s interfacial behaviour is closely similar to that of the original ore. On the World Iron & Steel 2010 Issue 1 Summary of bloom and round

(PDF) Dephosphorization of oxidized iron ore from Gara ...

The iron concentrate, assaying 94.12wt% Fe and 0.07wt% P at the iron recovery of 96.83% and the dephosphorization rate of 74.08%, is obtained under the optimum conditions.

Study on dephosphorization mechanism by roasting iron

2020-9-10 · Study on dephosphorization mechanism by roasting iron ore pellets with high phosphorus content Yangping Wu, Yuanzheng Guo and Xiaocan Zhong School of North China University of Science and Technology, Tangshan 063000, China; Abstract Based on high phosphorus pellets as the research object, combined with Factsage7.1

Advance in dephosphorisation of high phosphorus iron

In order to make good use of huge amount of high phosphorous iron ore for the ironmaking industry, the characteristics and advances in the dephosphorization technologies of high phosphorus iron ore were introduced, such as mill run, chemical leaching, bio-leaching and

Effect of additives on iron recovery and dephosphorization ...

2021-3-4 · The effect of CaCO 3 , Na 2 CO 3 and CaF 2 on the reduction roasting-magnetic separation of high-phosphorus iron ore containing phosphorus as Fe 3 PO 7 and apatite was investigated. The result shows that Na 2 CO 3 had the best effect on iron recovery and dephosphorization, followed by CaCO3, while CaF2 had almost no influence.

Synthesis and Dephosphorization of Iron Manganese ...

Fe-Mn composite oxide has been successfully synthesized using manganese ore in Guilin, Guangxi as an effective way to dephosphorize by acid leaching. Studied about the optimum conditions of acid leaching and the dephosphorization of Fe-Mn composite oxide. Process of the sulfuric acid concentration 2.1mol/L, solid-liquid ratio 1:4, reaction time 3.5h, the reaction temperature 90°C, the iron ...

Dissertação apresentada à - IPB

2018-1-15 · Dephosphorization of high-phosphorus iron ore is an unsolved problem worldwide so far. Biotechnology could be a cost-effective and environment-friendly way to solve this problem. In this work, the capability of dephosphorization of an iron ore from a mine from Northeast of

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

Dephosphorization of High-Phosphorus Iron Ore Using ...

2015-3-31 · High-phosphorus iron ore is traditionally dephosphorized by chemical process with inorganic acids. However, this process is not recommended nowadays because of its high cost and consequent environmental pollution. With the current tendency for development of a low-cost and eco-friendly process, dephosphorization of high-phosphorus iron ore through microbial process with three different

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.

Dephosphorization Treatment of High Phosphorus Iron

Fundamentals of Air Jet Milling zles.5,6) In the present work, the dephosphorization treatment The size reduction in an air jet mill takes place either by of pre-reduced high phosphorus iron ore was evaluated inter-particle collision or by impact against the solid surfaces using the air jet milling parameters such as the kinetic ener- such as ...

(PDF) Dephosphorization of oxidized iron ore from Gara ...

The iron concentrate, assaying 94.12wt% Fe and 0.07wt% P at the iron recovery of 96.83% and the dephosphorization rate of 74.08%, is obtained under the optimum conditions.

A STUDY OF THE DEPHOSPHORIZATION OF KOTON

2014-9-24 · 1 a study of the dephosphorization of koton karfe iron ore by acidic leaching. by ferdinard asuke (b. eng, m.sc) (ph.d/eng/02133/2008 – 2009) a project dissertation submitted to the school of

Study on dephosphorization mechanism by roasting iron

2020-9-10 · Study on dephosphorization mechanism by roasting iron ore pellets with high phosphorus content Yangping Wu, Yuanzheng Guo and Xiaocan Zhong School of North China University of Science and Technology, Tangshan 063000, China; Abstract Based on high phosphorus pellets as the research object, combined with Factsage7.1

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

BENEFICIATION, DEPHOSPHORIZATION AND

2017-11-30 · BENEFICIATION, DEPHOSPHORIZATION AND DESULPHURIZATION OF AGBAJA IRON ORE. Iron ores are used in blast furnace for the production of pig iron; Agbaja Iron ore has an estimated reserve of over I billion metric tonnes. Unfortunately, this large reserve cannot be utilized for the production of pig iron due to its high sulphur and phosphorus contents.

Synthesis and Dephosphorization of Iron Manganese ...

Fe-Mn composite oxide has been successfully synthesized using manganese ore in Guilin, Guangxi as an effective way to dephosphorize by acid leaching. Studied about the optimum conditions of acid leaching and the dephosphorization of Fe-Mn composite oxide. Process of the sulfuric acid concentration 2.1mol/L, solid-liquid ratio 1:4, reaction time 3.5h, the reaction temperature 90°C, the iron ...

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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