beneficiation process iron ore dephosphorization

Mechanism of phosphorus removal in beneficiation ... - Science Direct

Key words: high phosphorous oolitic hematite; direct reduction roasting; phosphorus removal; dephosphorization agent; grinding; magnetic separation. 1 Introduction. The conventional beneficiation process of iron ore is found to be less effective in phosphorus removal of high phosphorus oolitic hematite, which is one of the.

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Mechanism of phosphorus removal in beneficiation of high ...

Mechanisms of phosphorus removal in the beneficiation of high phosphorous oolitic hematite ore by direct reduction roasting with dephosphorization agent were studied using XRD, SEM and EPMA. The results ... K LI, W NI, M ZHU, M ZHENG, Y LIIron extraction from oolitic iron ore by a deep reduction process [J]. Journal of...

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Processes for phosphorus removal from iron ore - a review - SciELO

Sometimes, the usual methods of processing are not able to completely remove the phosphorus present in some types of iron ore when trying to make the content of this ..... Mechanism of phosphorus removal in beneficiation of high phosphorous oolitic hematite by direct reduction roasting with dephosphorization agent.

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US3402041A - Process for removing phosphorus from iron ores ...

A high phosphorus extraction is combined with high iron recovery in the process of the present invention. Practice of the invention would reduce the phosphorus content of iron ores and concentrates and increase the iron grade of the dephosphorized product thereby making these ores and concentrates more valuable and...

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Factors Affecting Dephosphorization of Agbaja Iron Ore (Kogi State ...

Full-text (PDF) | Abstract: The purpose of this research work is to determine the optimal factor combinations for dephosphorization of a Nigerian Agbaja iron deposit –the largest inferred deposit of about 1.250 billion tones. The process parameters used in dephosphorization include concentration,...

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Synchronous Upgrading Iron and Phosphorus ... - Semantic Scholar

May 24, 2016 ... 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 ..... The influence of basicity on beneficiation of iron and dephosphorization are shown in Figure 8,.

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Metals | Free Full-Text | Synchronous Upgrading Iron and ... - MDPI

May 24, 2016 ... Metals 2016, 6(6), 123; doi:10.3390/met6060123. Article. Synchronous Upgrading Iron and Phosphorus Removal from High Phosphorus Oolitic Hematite Ore by High Temperature Flash Reduction. Deqing Zhu, Zhengqi Guo *, Jian Pan * and Feng Zhang. School of Mineral Processing and Bioengineering,...

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Development of Technologies for High Phosphorus Oolitic Hematite ...

Feb 2, 2011 ... commercial scale through dephosphorization with present technology. In this paper, a comprehensive solution is proposed based on the beneficiation and smelting processes,. e.g. the phosphorus contained in iron ore is removed at different stages so that the ore can be exploited on a commercial scale.

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Hydrometallurgical Process of Dephosphorization of Agbaja Iron Ore

Physical beneficiation methods failed as the phosphorus was in solid solution in goethite. Chemical dephosphorization methods for iron ore were reviewed and tested on the ore samples from the Pilbara region. Leaching without thermal treatment was found to be quite ineffective. When phosphorus is disseminated in iron...

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Dephosphorization of Iron Ore Bearing High Phosphorous ... - J-Stage

promising pre-reduction process which could be followed by smelting process and dephosphorization treatment. KEY WORDS: high phosphorous iron ore; microwave irradiation; carbothermic reduction; thermal stress; dephosphorization ... for various applications in mineral processing and extractive metallurgy in the past...

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Iron recovery and phosphorus removal from oolitic high-phosphorus ...

Further removal of phosphorus from these ores using conventional beneficiation methods is not possible. Various processes have ... It is a solid-state carbon-based reduction technology and is applicable for processing iron ore as well as iron-oxide-containing materials (Mcclelland and Metius, 2003). Moreover, it has been...

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Laboratory Studies on Phosphorus Removal from Nigeria's Agbaja ...

Apart from the high phosphorus status, the Agbaja iron ore is also associated with beneficiation difficulties [9, 10, 11] which, after many attempts by researchers, resulted in its abandonment on grounds of above technical reasons. In mineral processing the use of microbes has gained significant popularity and the works of...

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New industrial solutions to treat high P iron ores – case study of the ...

Jul 1, 2016 ... This phosphorus precludes the production of saleable iron ore concentrates using conventional metallurgical processes for the European steelworks because ... that has never been tested at an industrial scale and that will create a rupture with the existing knowledge regarding high P iron ore beneficiation.

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Investigation of dephosphorization of brown iron ore concentrates by ...

Sinter roasting transfers phosphorus from ore phases to slag-forming ones.•The composition of iron-silicate phases was determined depending on the basicity.•A phosphorus-containing ... Investigation of dephosphorization of brown iron ore concentrates by sintering and magnetic beneficiation. B. Khassen, N. Baltynova,...

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Laboratory of Mineral Resources Technology and Application of ...

Process Mineralogy: beneficiation process mineralogy research on crude ore or secondary resources; the Process Mineralogy of metallurgical products; mineral ... Characteristic efficient flotation reagent: efficient beneficiation reagent of iron ore; dephosphorization of iron concentrate, efficient sulfur flotation reagent; ferrous...

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Study of the calcination process of two limonitic iron ores between ...

calcination process are of vital importance for the continuous improvement of the mineral beneficiation, and the metallurgical processes in both iron [3] and nickel industries [4]. Many iron-ore producing countries have been forced to assess the feasibility of using hydrated oxides and iron oxy hydroxides (goethite and...

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fluxes for metallurgy - 911 Metallurgist

other processes. Fluxes are often referred to as acid, basic, or neutral. Acid fluxes are those that generally form acids in water and bases are those that would generally form bases in water. Typical acid ... The production of iron is accomplished by smelting of ores, pellets .... The beneficiation process generally comprises...

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Effect of some commercial flocculating agents on settling ... - NOPR

The beneficiated ore is dephosphorized by roast-leaching ... known to mineral processing engineers and indeed, has been in industrial practice ... starch, waxy milos), gums, resins etc. These non-ionic flocculants are extensively used in the flocculation of iron ore slimes. Synthetic flocculants are generally acrylamide based...

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Solid State Desulphurization of Iron Ore and Empirical ... - jmest

beneficiated concentration and treatment temperature. The essence of this work is to ascertain the level of dephosphorization achievable at different treatment temperatures where all other input process parameters are kept constant. MATERIALS AND METHODS. Agbaja (Nigeria) iron ore concentrate used for this work was...

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Beneficiation Tests of Silicon Reduction for Iron Concentrate in ...

In order to provide technical support for silicon reduction from iron ore concentrate in dressing plant of Meishan Iron Mine,based on identifying reasons for high content of SiO2 in on-site iron ore concentrates,beneficiation tests on the on-site sulfur floating tailings is made by adopting four schemes to obtain iron concentrate...

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Dephosphorization of Iron Ore through Bioleaching Kanan ...

steelmaking process because it will affect the quality of iron and steel products. Allowable phosphorus concentration in high quality steel is usually less than 0.08%. Dephosphorization of iron ore has been studied for a long time. Although there are described physical beneficiation and chemical leaching processes...

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Predictability of Phosphorus Removal Based on ... - CiteSeerX

model-predicted (D-Model) concentrations of removed phosphorus (during the beneficiation process) from the concentrations ... Phosphorus Removal Based on Simultaneously Removed Sulphur and Mass-Input of Iron Ore Leached in. Potassium ... economical dephosphorisation process is critical for the future success of...

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Dephosphorization of High-Phosphorus Iron Ore Using Different ...

Mar 31, 2015 ... Dephosphorization of High-Phosphorus Iron Ore Using Different Sources of Aspergillus niger Strains. Xiao C(1), Wu X, Chi R. Author information: (1)Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, 430073, Wuhan, China. High-phosphorus iron ore is...

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Microwave dephosphorisation of high phosphorus iron ores of the ...

Dec 18, 2015 ... MICROWAVE DEPHOSPHORISATION. OF HIGH PHOSPHORUS IRON ORES. OF THE ASWAN REGION, EGYPT. Developing a novel process for high phosphorus iron ore utilization. Academic dissertation to be presented with the assent of the Doctoral Training Committee of Technology and.

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Predictability of Phosphorus Removal Based on Simultaneously ...

The maximum deviation of the model-predicted (D-Model) concentrations of removed phosphorus (during the beneficiation process) from the concentrations obtained from ... In addition, the development of an economical dephosphorisation process is critical for the future success of iron ore, iron and steel making industry.

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Froth Flotation of Iron Ores - Scientific & Academic Publishing

Jan 2, 2012 ... With the depleting reserves of high-grade iron ore in the world, various beneficiation methods have been employed to process intermediate- and .... At LKAB (Luossavaara-Kiirunavaara AB) in Kiruna, Sweden, the dephosphorization of a magnetite ore is conducted using magnetic separation and flotation.

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evaluation of the heating of the iron ore using the ... - Cetem

thus occurring the devaluation of the ore by the high cost due to the reduction processing of phosphorus content during the production of steel. One alternative for reducing the phosphorus content in iron ore is the use of acid leaching process where it is considered more economical process for the dephosphorization...

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Behavior of Phosphorus during Reduction Roasting of Oolitic ...

Abstract. Oolitic hematite ore with high-phosphorus content is currently recognized as one of the most refractory iron ore resources in the world. The high-phosphorus content and unique structure of the oolitic hematite ore make it difficult to be beneficiated. The process of direct reduction followed by magnetic separation has...

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SIPS2016

Starkey International Symposium (3rd Intl. Symp. on Sustainable Mineral Processing: Principles, Technologies and Industrial Practice) · Yagi International Symposium (2nd ..... Iron ore raw materials and fluxes for sinter production are delivered from mining and concentration plants of the Group. Coke at the company and at...

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Characterization of Chemical Composition and Microstructure of ...

Oct 24, 2012 ... In addition, the ores contain other impurities such as MnO, ZnO, PbO and others, which exist in considerably negligible amounts. Alumina, sulphur, and phosphorous represent contaminations in the steel making process and are specific targets during iron ore beneficiation [9]. tab1. Table 1: Complete...

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