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dephosphorization of iron ore

Dephosphorization of Nigerian Agbaja Iron Ore by ...

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 …[...]

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In this investigation the dephosphorization of Agbaja iron ore with high phosphorus content was carried out. Central composite design was also used to determine the surface response interactions between prevailing dephosphorization factors. MATERIALS AND METHODS The raw iron ore was crushed for the purpose of liberation size.[...]

INTERNATIONAL JOURNAL OF TECHNOLOGY …

ABSTRACT: The purpose of this research effort is to determine the optimal factors for dephosphorization of a Nigerian Agbaja iron ore. The process The process parameters used in the study of optimization of dephosphorization includes pH, particle size, dwell time.[...]

Dephosphorization of High-Phosphorus Iron Ore Using ...

Mar 31, 2015· 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.[...]

BENEFICIATION, DEPHOSPHORIZATION AND …

Apr 30, 2012· Unfortunately, this large reserve cannot be utilized for the production of pig iron due to its high sulphur and phosphorus contents. 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.[...]

US5385599A - Agent for desulfurization, dephosphorization ...

The mineralic components, in connection with calcium carbide, lime, iron-ore or scale or other related ores, cause an effective reduction of unwanted elements, such as sulfur, phosphorus, silicium, and nitrogen, in the metal melts. The slags produced are freely skimmed and contain less iron granules than standard agents.[...]

(PDF) Biodephosphorization of iron ores - ResearchGate

Biodephosphorization of iron ores. ... It was found that in bacterial-led experiments dephosphorization attained was around 10% while in fungi-led experiments dephosphorization of the ore reached ...[...]

BENEFICIATION, DEPHOSPHORIZATION AND DESULPHURIZATION OF ...

Unfortunately, this large reserve cannot be utilized for the production of pig iron due to its high sulphur and phosphorus contents. 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.[...]

Dephosphorization of Iron Ore Bearing High Phosphorous …

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 …[...]

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.[...]

Optimization of Process Parameters for the ...

Optimization of Process Parameters for the Dephosphorization of iron ore using Nitric Acid *T.O. Chime, *Department of Chemical Engineering, Enugu State University of Science and Technology[...]

Optimization of Process Parameters for the ...

Optimization of Process Parameters for the Dephosphorization of iron ore using Nitric Acid - written by T. O. Chime, O. D. Onukwuli, I. O. Ani published on 2016/10/06 download full …[...]

CN105803155A - Dephosphorization method for electric-arc ...

[0018] Further, the carrier gas is any one or a mixture of oxygen, carbon dioxide, nitrogen, or any two or more; the dephosphorization dephosphorization EAF powder used is lime, limestone powder, firefly fine iron ore powder or any one or any mixture of two or more powders, dusts dephosphorization particle diameter 15μπι ~ 1.0mm; the girth ...[...]

Investigation of dephosphorization of brown iron ore ...

Jan 10, 2014· Read "Investigation of dephosphorization of brown iron ore concentrates by sintering and magnetic beneficiation, International Journal of Mineral Processing" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.[...]

journals on dephosphorization of iron ore - shibang-china.com

This page is about journals on dephosphorization of iron ore, click here to get more infomation about journals on dephosphorization of iron ore.[...]

Removal of phosphorus from iron ores by chemical leaching ...

Alkali-leaching and acid-leaching were proposed for the dephosphorization of Changde iron ore, which contains an average of 1.12% for phosphorus content. Sodium hydroxide, sulfuriced, hydrochloric and nitric acids were used for the preparation of leach solutions.[...]

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[...]

journals on dephosphorization of iron ore illia

journals on dephosphorization of iron ore - cad-house.co.za iron ore plants in nepal you can buy various high quality iron ore pellet plant journals on dephosphorization of iron ore illia; mobile iron ore cone crusher Online Service high quality limestone cone crusher for iron ore from.[...]

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[...]

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.[...]

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. Traditional physical separation method dephosphorization effect is not ideal, and chemical methods microbial hydrometallurgical technology due to the high ...[...]

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 …[...]

dephosphorization of iron ore - mannenkoorgent.be

Dephosphorization of Iron Ore Bearing High Phosphorous by Carbothermic Reduction Assisted with Microwave and Magnetic Separation. 24/7 online. journals on dephosphorization of iron ore. Journals, Conferences, Proceedings, Open Access Journals, SCIRP- journals on dephosphorization of iron ore,Scientific Research Publishing is an academic ...[...]

Dephosphorization - an overview | ScienceDirect Topics

Jan 05, 2012· Jorge Madias, in Treatise on Process Metallurgy: Industrial Processes, 2014. 1.5.4.2 Refining in EAF. For most steelmaking operations, refining in the EAF is limited to dephosphorization, decarburization, and temperature adjustment.Phosphorus in the charge could be at higher than usual levels for DRI, HBI, pig iron, and hot metal, depending on the iron ore source.[...]

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 ...[...]

"DEPHOSPHORIZATION OF GOETHITE ORE" by Long Zhang

With the depletion of high-grade and low phosphorus iron ore reserves, the extensive goethite ores containing high phosphorus become more attractive. However, there is a lack of effective and economic technologies for removing phosphorus from goethite ore. The current utilization of goethite ore to date has been to, first reducing the phosphorus to low of a level as practical by mineral ...[...]

Characterization of Chemical Composition and ...

The study aimed at investigating the chemical composition and microstructure of raw iron ore from the deposits in Muko area (south-western Uganda). The quality of this iron ore was evaluated to establish its suitability to serve as a raw material for iron production. Samples were taken from the six hills of Muko ore deposits and tests carried out to establish their composition and properties.[...]

DEPHOSPHORIZATION OF AGBAJA IRON ORE BY SINTERING …

Oct 31, 2014· The organism used, performed very well in dephosphorization & upgrading of iron content in Agbaja iron ore under the following conditions: Particle size range of 0.32 — 0.63mm, pH=2, inoculum size of 5ml (at 0.5Mc Farland standards in 300ml of experimental medium) at fourth week when 2g] extract in 100ml solution was analyzed.[...]

Dephosphorization of Steels – IspatGuru

Aug 15, 2016· The initial comprehensive studies on dephosphorization were conducted during the 1940s. These studies observed that FeO and CaO are necessary slag constituents for the dephosphorization of steel. These studies also showed that the dephosphorization reaction is exothermic and that the slag capacity for dephosphorization decreases with temperature.[...]

Dephosphorization Treatment of High Phosphorus Iron Ore by ...

ISIJ International, Vol. 51 (2011), No. 4, pp. 544–551 Dephosphorization Treatment of High Phosphorus Iron Ore by Pre-reduction, Air Jet Milling and Screening Methods Elias MATINDE1) and Mitsutaka HINO2) 1) Formerly Graduate Student, Tohoku University.[...]