iron ore leaching process concentration

Model for Calculating the Concentration of Dissolved

2017-2-21  temperature) during leaching of iron oxide ore in oxalic acid solution has been derived. The model; %Fe = 1.1849(γ/T)3 was found to calculate the concentration of dissolved iron being dependent on the values of the final leaching solution pH and temperature measured during the leaching process. It was observed that the validity of the model is

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Model for the Calculation of the Concentration of ...

2013-12-24  W = Weight of iron oxide ore used (g) The present work is aimed at deriving a model for the calculation of the concentration of dissolved haematite during leaching of Itakpe (Nigeria) iron oxide ore in hydrogen peroxide solution. 2. MODEL Hydrogen ions from the hydrogen peroxide attack the iron oxide ore within the liquid phase in

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Production of a ferric chloride coagulant by leaching an ...

2020-9-1  Iron ore tailing was used as a raw material for the production of ferric chloride. Leaching studies were carried out with hydrochloric acid. The procedures allowed 94% recovery of iron present in the iron ore tailing. The leachate presented 11% Fe in its composition and a low concentration

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Leaching of niobium- and REE-bearing iron ores ...

2017-12-22  An innovative process was developed for the leaching of niobium- and rare earth elements-bearing pyrochlores ores and the subsequent separation of Nb from the REE. Compared to the conventional Nb hydrometallurgical methods, the proposed leaching process is based on a triphasic system: H 2 SO 4(aq)-SO 2(g)-activated carbon/ore.

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Leaching behaviors of iron and aluminum elements of ion ...

2014-9-1  The main impurities in leaching solution of ion-absorbed-type rare-earth ore are related to the nature of rare-earth ore, leaching process, operating conditions, and kinds of leaching agents. The main chemical composition in leaching solution is shown in Table 1 [12], which indicates that the main impurities are aluminum and iron ions.

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The removal of phosphorus from iron ore by leaching with ...

1989-5-1  Abstract. A hydrometallurgical method for the removal of phosphorus from iron ore is presented. The apatite content (∼ 1%) of a Swedish ore is removed (> 95%) by leaching the ore with nitric acid. The iron loss is less than 0.05% while the alkali metal content is greatly reduced (> 60%). The quality of the ore, as a sinter feed, has been ...

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Model for Predicting the Concentration of Phosphorus ...

2013-4-7  of the iron oxide ore. The model indicates that the concentration of phosphorus removed is inversely proportional to the product of the weight input of the iron oxide ore and the final pH of the leaching solution. Process conditions considered during the formulation of the model [12] include: leaching temperature of 25. 0C, initial solution pH ...

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Model for Evaluation of the Concentration of Dissolved ...

2013-12-24  process to remove phosphorus from the iron oxide ore in readiness for steel making process. The aim of this work is to derive a model for evaluation of the concentration of phosphorus removed relative to the final pH (only) of the solution during leaching of Itakpe (Nigerian) iron

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Production of a ferric chloride coagulant by leaching an ...

Iron ore tailing was used as a raw material for the production of ferric chloride. Leaching studies were carried out with hydrochloric acid. The procedures allowed 94% recovery of iron present in the iron ore tailing. The leachate presented 11% Fe in its composition and a low concentration of contaminants. The water treatment test showed the ...

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Model for predicting the concentration of phosphorus ...

2014-9-26  iron oxide ore through a process associated with hydrometallurgy. Phosphorus was removed at a temperature of 250C and initial solution pH 2.5, leading to the dissolution of the phosphorus oxide formed. This involved using acid leaching process to remove phosphorus from the iron oxide ore in readiness for steel making process.

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The Effect of Acid Concentration on the Chemical

The Effect of Acid Concentration on the Chemical Leaching of El-Gedida High-Ba Iron Ore, El-Bahariya Oasis, Western Desert, Egypt Galal El-Habaak 1 , Mohamed Askalany 2 , Mohamed Farghaly 3 ...

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(PDF) Model for Predictive Analysis of the Concentration ...

A process assessment model [11] clearly predicted the quantity of removed phosphorus P, during sulfuric acid leaching of iron oxide ore, based on the combined influence of the initial and final ...

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Model for Predictive Analysis of the Concentration of ...

Key Words: Model, Prediction, Phosphorus Removed, Sulphuric Acid, Iron Oxide Ore, Leaching. Vol.8, No.4 Model for Predictive Analysis of the Concentration of Phosphorus 262

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Investigation of Chemical and Microbial Leaching of Iron ...

chemical and microbial leaching of a Nigerian iron ore in sulphuric acid medium. So far, there is no data to this effect viz-a-viz the Nigerian iron ore mineral is concerned. Equally, this work is a continuation of the recent research on a Nigerian iron-ore mineral (Baba et al, 2005). EXPERIMENTAL Material: The sample of the iron ore concentration

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Model for predicting the concentration of phosphorus ...

2014-9-26  iron oxide ore through a process associated with hydrometallurgy. Phosphorus was removed at a temperature of 250C and initial solution pH 2.5, leading to the dissolution of the phosphorus oxide formed. This involved using acid leaching process to remove phosphorus from the iron oxide ore in readiness for steel making process.

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Quantitative Leaching of a Nigerian Iron Ore in ...

Quantitative Leaching of a Nigerian Iron Ore Alafara, A. Baba; Adekola, F A; Folashade, A O 17 RESULTS AND DISCUSSION Elemental Analysis of the iron ore by ICP – MS: The results of the elemental analysis are presented in Table 2. Table 2: aElemental composition of the iron ore. Fe Mn Ca Mg Na K Ti Al Si P O*

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MULTISTAGE DILUTE ACID LEACHING OF A MEDIUM

2017-6-9  supply of iron ore super concentrates to the Aladja Steel Midrex plant necessitates further studies to upgrade these iron ore deposits. Hence, the aim of this research work is to upgrade the Koton Karfe iron ore from these deposits to a super-concentrate through multistage leaching using dilute hydrochloric acid. 2.

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Dephosphorization of Nigerian Agbaja Iron Ore by ...

2018-12-7  concentration of 1.0m reaction time of 30mins and particle size of about 0.4m. Also, iron loss during the leaching process reached 6.01mg/l at concentration of 0.2m, reaction time of 60 minutes and particle size of about 0.2mm. The pH change of the solution reached its minimum value at

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Central composite design for optimization and formulation ...

2018-2-1  Owing to the negative effects of sulphur in iron ore on steelmaking process and environment, a tank leaching process was performed in atmospheric conditions to remove the sulphur from the iron ore concentrate and simultaneously to transform sulphide minerals into useful by-products. To achieve desirable sulphur removal rate and efficiency, central composite design was adopted as a response ...

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Selective leaching of nickel from prereduced limonitic ...

2016-10-31  In this paper, the selective acid leaching of nickel from the pre-reduced limonitic laterite under moderate HPAL conditions was studied. For the calcine with reduction degree of 93.4%, about 88.2% nickel could be selectively extracted at 100°C with an acid/ore ratio of 0.164, leaving less then 5.0g/L iron in the solution. Further

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Model for Calculating the Concentration of Dissolved

2017-2-21  temperature) during leaching of iron oxide ore in oxalic acid solution has been derived. The model; %Fe = 1.1849(γ/T)3 was found to calculate the concentration of dissolved iron being dependent on the values of the final leaching solution pH and temperature measured during the leaching process. It was observed that the validity of the model is

More

Model for predicting the concentration of phosphorus ...

2014-9-26  iron oxide ore through a process associated with hydrometallurgy. Phosphorus was removed at a temperature of 250C and initial solution pH 2.5, leading to the dissolution of the phosphorus oxide formed. This involved using acid leaching process to remove phosphorus from the iron oxide ore in readiness for steel making process.

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The leaching of sulfide iron (II) with sulfuric acid ...

2015-8-25  The leaching of iron (II) sulfate concentrate from Chaabet El Hamra, Algeria bulk sulphide ore with sphalerite concentrate in presence of sulfuric acid and hydrogen peroxide at low stirring rates (100 rpm). The influence of leaching temperature, leaching time, particle size and sulfuric acid concentration were studied. In this paper we focused our attention on the process of direct leaching of ...

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Leaching Titaniferous Magnetite Concentrate by Alkaline ...

2021-6-16  Leaching titaniferous magnetite concentrate with alkali solution of high concentration under high temperature and high pressure was utilized to improve the grade of iron in iron concentrate and the grade of TiO 2 in titanium tailings. The titaniferous magnetite concentrate in use contained 12.67% TiO 2 and 54.01% Fe. The thermodynamics of the possible reactions and the kinetics of leaching ...

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Leaching of niobium- and REE-bearing iron ores ...

2017-12-22  An innovative process was developed for the leaching of niobium- and rare earth elements-bearing pyrochlores ores and the subsequent separation of Nb from the REE. Compared to the conventional Nb hydrometallurgical methods, the proposed leaching process is based on a triphasic system: H 2 SO 4(aq)-SO 2(g)-activated carbon/ore.

More

Quantitative Leaching of a Nigerian Iron Ore in ...

Quantitative Leaching of a Nigerian Iron Ore Alafara, A. Baba; Adekola, F A; Folashade, A O 17 RESULTS AND DISCUSSION Elemental Analysis of the iron ore by ICP – MS: The results of the elemental analysis are presented in Table 2. Table 2: aElemental composition of the iron ore. Fe Mn Ca Mg Na K Ti Al Si P O*

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MULTISTAGE DILUTE ACID LEACHING OF A MEDIUM

2017-6-9  supply of iron ore super concentrates to the Aladja Steel Midrex plant necessitates further studies to upgrade these iron ore deposits. Hence, the aim of this research work is to upgrade the Koton Karfe iron ore from these deposits to a super-concentrate through multistage leaching using dilute hydrochloric acid. 2.

More

Dephosphorization of Nigerian Agbaja Iron Ore by ...

2018-12-7  concentration of 1.0m reaction time of 30mins and particle size of about 0.4m. Also, iron loss during the leaching process reached 6.01mg/l at concentration of 0.2m, reaction time of 60 minutes and particle size of about 0.2mm. The pH change of the solution reached its minimum value at

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Separation of Fe and Mn from Manganiferous Iron Ores via ...

2019-8-1  In this study, a process to separate manganese and iron from manganiferous iron ores by reductive acid leaching followed by magnetic separation was conceived and experimentally tested. In the leaching process, sulfuric acid was used as lixiviant and oxalic acid was used as reductant. The experimental results showed that the manganese and iron separation was optimum when the concentration

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REMOVAL OF PHOSPHORUS THROUGH ROASTING OF

2014-1-18  concentration of acid and to a less extent duration of the leaching process. About two third of the phosphorus can be removed by roasting with 3 % CaO to hematite, coarse grinding to d50 0.3 mm, dry high intensity magnetic separation and leaching of

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