dephosphorization of iron ore

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Iron Ore | Nnamdi Azikiwe University Digital Library

The research studied the dephosphorization of Agbaja iron ore to enable its utilization in iron and steel production. The ore contains 1.4 to 2.0%phosphorus which is beyond the acceptable limit of 0.08% for tradedable steel and 0.045% for engineering applications.

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The Effect of Na2O and K2O flux on the Phosphorus ...

mass% has large proportion in iron ore resources in China, and it is 1/9 of the iron ore deposit in China [1] ... dephosphorization slag used in practical production is lime system, which is CaO-SiO. 2-Fe. t. O. Ito et al [5-6] reported that the phosphate capacity of soda is greater than that of lime in the hot metal

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INTERNATIONAL JOURNAL OF TECHNOLOGY …

INTERNATIONAL JOURNAL OF TECHNOLOGY ENHANCEMENTS AND EMERGING ENGINEERING RESEARCH, VOL 2, ISSUE 5 109 ... Central Composite Design In Optimization Of The Factors Of Dephosphorization Of Agbaja Iron Ore Obiorah, S.M.O., Nnuka, E.E., Odo, J.U.and Nwakpa, S. O. ... INTERNATIONAL JOURNAL OF TECHNOLOGY ENHANCEMENTS AND EMERGING ENGINEERING …

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Biodephosphorization of Iron Ore using Acidothiobacillus ...

An attempt has been made to investigate the removal of phosphorus from Agbaja iron ore using Acidothiobacillus ferroxidans bacterium. The bacterium strain was isolated from Agbaja high phosphorus iron ore. ... Muhammed, M; Zhang, V. A hydrometallurgical process for the dephosphorization of iron ore. Hydrometallurgy. 1989(21):277-292.

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Reaction Behavior of Phosphorus in Coal-Based Reduction of ...

enrichment in the reduced iron during coal-based reduction of high phosphorus-containing oolitic hematite ore. The reduced iron is then refined by a dephosphorization process. High phosphorus dephosphorization slag is obtained and used as a phosphate fertilizer apart from molten iron.

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Hydrometallurgical Process of Dephosphorization of Agbaja ...

A study on the dephosphorization of Agbaja Iron Ore using hydrometallurgical process has been carried out. The central composite design of 23 response …

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Biodephosphorization of Iron Ore using Acidothiobacillus ...

Biodephosphorization of Iron Ore using Acidothiobacillus ferrooxidans. Chime T.O. 1, ... Biodephosphorization of Iron Ore using . Acidothiobacillus ferrooxidans. New York Science Journal 2011;4(1):1-6]. ... phosphorus and iron contents. Degree of dephosphorization % = 1 100 received value P(ppm) received value P (wt%)-Final value P(wt%) x As As.

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screening and crushing ofiron ore

Dephosphorization Treatment of High Phosphorus Iron Ore by Pre . tons and are the most important sources of iron ore on the . of high phosphorus iron ore by mechanical crushing and screening methods were investigated in.

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Technical Report Improvement in Hot-Metal …

Dephosphorization tests were carried out using a commercially operating converter of Nagoya Works equipped with bottom blow-ing facilities for powder injection.23, 24) Burnt lime, iron ore, and flu-orspar were added to approximately 110 t of molten pig iron, and the amount of top blown oxygen was changed. Either lime stone or

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Solid State Desulphurization of Iron Ore and Empirical ...

dephosphorizing phosphor-containing iron ore using bacteria, giving a yield of above 80% within 3045 - days. In countries having high phosphorus-iron ore, the highlighted dephosphorization process is capable of providing a reliable technical support; giving good dephosphorization at low cost.

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Study on Leaching of Phosphorus in Iron Ore by Mixed ...

The iron ore dephosphorization the technology, to improve the quality of domestic iron ore and promote the development of China's iron and steel industry has important practical significance.

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journal homepage …

Key Words: Hydrometallurgy, Dephosphorization, Iron loss, Surface response. INTRODUCTION Nigeria is one of the richest countries of the world as far as mineral resources are concerned, iron ore inclusive. The estimated workable iron deposits stand in excess of 2.5 billion tonnes most of

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Dephosphorization Of Iron Ore

Dephosphorization Treatment of High Phosphorus Oolitic Iron Ore by Hydrometallurgical Process and Leaching dephosphorization of high phosphorus iron ore has . iron ores technology faizdcollege. Dephosphorization technology of iron ores by As with most iron ore mines throughout the world, all the major Australian iron ore mines are open cut.

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BENEFICIATION, DEPHOSPHORIZATION AND DESULPHURIZATION OF ...

In addition, the ore cannot be beneficiated easily like Itakpe and Oshokoshoko iron ores because of its texture. This work studied the beneficiation, dephosphorization and desulphurization of Agbaja iron ore.

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Processes for phosphorus removal from iron ore - a review

Iron ore of high phosphorus content coexists with other minerals in the form of apatite or fluorapatite. ... ZHU, D. Q. et al. Upgrading and dephosphorization of Western Australian iron ore using reduction roasting by adding sodium carbonate.

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Tailwind Spin of High Grade Iron ore - steel-360.com

All Coal Economy Emerging Market Ferro Alloy Graphite Electrode Iron Ore Recycling Steel. Coal. Outlook of Steel Industry – 2019. Steel. 2018 – The Subtle year for the iron & steel Industry. ... Dephosphorization Pretreatment of liquid steel For Immediate frequency furnace. Technology Next. Chinese Mills are Catching Up RHF Technology ...

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Solid State Desulphurization of Iron Ore and Empirical ...

iron ore using bacteria, giving a yield of above 80% within 30-45 days. In countries having high phosphorus-iron ore, the highlighted dephosphorization process is capable of providing a reliable technical support; giving good dephosphorization at low cost. Phosphorus removal using some biological processes have

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Dephosphorization of Steels | ispatguru.com

Dephosphorization of Steels ... However, in the recent past, because of high iron ore prices, lower priced iron ores from sources which normally have higher P content are being used and this has made P control an important activity during the steelmaking. ... The dephosphorization mechanism in the BOF process can be summarized as below. During ...

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DEPHOSPHORIZATION OF AGBAJA IRON ORE BY …

 · The research studied the dephosphorization of Agbaja iron ore to enable its utilization in iron and steel production. The ore contains 1.4 to 2.0%phosphorus which is beyond the acceptable limit of 0.08% for tradedable steel and 0.045% for engineering applications.

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hydrometallurgical process of iron

A hydrometallurgical process for the dephosphorization of iron ore ... 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...

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EP0043238B1 - Method of dephosphorizing molten pig iron ...

pig iron molten pig dephosphorization blowing bottom Prior art date 1980-06-28 ... Moreover, if iron ore is added as an auxiliary material during the blowing, the total oxygen blowing quantity may include oxygen produced from the iron ore (1 kg of the iron ore produces oxygen gas …

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Thermodynamic analysis and experimental study of …

process from dephosphorization (using De-P and De-C converters) in the duplex melting process is advantageous, as it allows for the use of phosphorus-rich iron ore and relatively lower amounts of slag, as well as direct alloying with manganese ore in the converter. Consequently, iron procurement costs and metal losses are reduced to a ...

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Recovery of Manganese and Phosphorus from ...

Recovery of Manganese and Phosphorus from Dephosphorization Slag with Wet Magnetic Separation ... Key words: dephosphorization slag, magnetic separation, phosphorus, manganese Abstract The dephosphorization slag has a great potential as the secondary resources of manganese and ... Manganese and phosphorus exist in coal, iron ore, and limestone ...

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CN101338361A - Method for reducing phosphorus in high ...

Currently, dephosphorization method of iron ore with a high phosphorus and mineral processing methods, chemical methods, microbiological methods and smelting method.

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Mechanism of phosphorus removal in beneficiation of high ...

dephosphorization performance of gas-based reduction and melt separation in the beneficiation of high phosphorous (1.20%) iron ore from Wuhan Iron and Steel Company, China. The results showed that there was 0.27% phosphorus in the metal sample, the oolitic mineral structure was …

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Dephosphorization Treatment of High Phosphorus Iron Ore by ...

Dephosphorization Treatment by Pre-reduction, Mechanical Crushing and Screening Methods Figure 12 shows the effect of reduction temperature on the dephosphorization treatment of reduced iron ore by me- Fig. 10.

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Dephosphorization of High-Phosphorus Iron Ore Using ...

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 sources of Aspergillus niger strains was studied in this study.

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Dephosphorization Treatment of High Phosphorus Iron Ore by ...

2.4. Dephosphorization Treatment by Pre-reduction, Mechanical Crushing and Screening Methods The dephosphorization treatment of high phosphorus iron ore before …

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NTERNATIONAL OURNAL OF SCIENCES AND NGINEERING OL …

Optimization of Process Conditions for the Dephosphorization of Iron Ore Using Sulphuric Acid T.O. Chime Department of Chemical Engineering, Enugu State University of Science and Technology Enugu, Nigeria Abstract– An investigation has been carried out in using acid this study to optimize the process variables for the dephosphorization of an

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INDUSTRIAL ANDLABORATORYEXPERIMENTSREGARDING THE ...

We have been experimented the dephosphorization on three charges. With the first charge, on the load (approximately 3 tones), the following additions have been made: ˜ 40 kg CaF2, ˜ 60 kg iron ore (pellet), ˜ 80 kg lime. After melting, the composition of the metallic bath is presented in Table 3.

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Effects of Particle Sizes of Iron Ore and Coal on the ...

Effects of Particle Sizes of Iron Ore and Coal on the Strength and Reduction of High Phosphorus Oolitic Hematite-coal Composite Briquettes Wen YU, Tichang SUN,* Zhenzhen LIU, Jue KOU and Chengyan XU School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083 China.

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Dephosphorization Treatment of High Phosphorus Oolitic ...

Dephosphorization process of high phosphorus oolitic iron ore by acid leaching and leaching kinetics were investigated in the paper. The high phosphorus ore samples (51%T.Fe, 0.52%P) used in this work were analysed by SEM-EDS and XRD, which showed their oolitic structure and mineral phases.