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phosphorous removal from iron ore in solid state

Removal of Phosphorus from High Phosphorus Iron Ores

In the process of resource utilization of high phosphorus iron ores, phosphorus should be removed first. Compared to other dephosphorization methods, selective leaching with acid has special advantages such as high dephosphorization ratio, low iron loss and so on. However, a large amount of acidic wastewater containing phosphorus was produced after acid leaching.

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Solid State Desulphurization of Iron Ore and Empirical ...

2013-8-4 · phosphorus removal based on its as-beneficiated content, iron extraction rate and input concentration of H 2 O 2. Phosphorus present in the iron ore is locked up with the ore. During leaching of the iron ore in the required solutions, as phosphorus is being oxidized by oxygen produced from

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Solid State Desulphurization of Iron Ore and Empirical ...

2014-11-30 · oxide ore and also predicting removed phosphorus concentrations using empirical models. A model was derived for predictive analysis of the concentration of phosphorus removed during leaching of iron oxide ore in sulphuric acid solution [6]. The work indicated that phosphorus removal from the iron oxide ore as obtained from experiment and ...

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Removal of Phosphorus From High Phosphorus Iron Ores

2011-5-1 · Available online at sciencedirect @ ScienceDirect JOURNAL OF IRON AND STEEL RFSEARCH, INTERNATIONAL. 2011, 18(5): 01-04, 19 Removal of Phosphorus From High Phosphorus Iron Ores by Selective HCl Leaching Method XIA Wen-tang, REN Zheng-de, GAO Yi-feng (School of Metallurgical and Materials Engineering, Chongqing University of Science and Technology

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Phosphorus Treatment and Removal Technologies

2012-10-4 · be in the range of 1.2 to 4.0 moles aluminum or iron per mole of phosphorus. The pH value is an important factor for efficient removal of phosphorus using alum or other salts, as the solubility of their precipitates vary with pH. Phosphorus removal is most efficient in the pH range of 5 to 7 for alum and of 6.5 to 7.5 for ferric salts since their

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Colorimetric Determination of Phosphorus in Iron Ore

According to the melting behavior of high phosphorous iron ore gaseous reduction product at 1473 K, the iron grains remain in solid state, and the other minerals have formed into slag phase, as ...

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Separation of Iron Phase and P-Bearing Slag Phase from ...

2016-1-22 · In situ observation on the morphology evolution and phosphorous migration of gaseous-reduced, high-phosphorous oolitic iron ore during the melting process was carried out with a high-temperature confocal scanning laser microscope. The results showed that 1473 K (1200 °C) was a critical temperature at which the gangue minerals started to form into the slag phase while the iron grains

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Amenability for processing of oolitic iron ore concentrate ...

2013-6-1 · The removal of phosphorus from iron ore using a low temperature heat treatment with additives, followed by alkaline or water leaching, has been tested by Fisher-White et al., (2009), with phosphorus being lowered from 0.145–0.075%.

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Variation of equilibrium phosphorus partition ratio with ...

Alternatively, steel can be produced from solid sponge iron obtained by solid-state reduction of iron ore in the shaft furnace or retort. Thus, basically two routes are adopted in the production ...

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Solid State Desulphurization of Iron Ore and Empirical ...

2013-8-4 · phosphorus removal based on its as-beneficiated content, iron extraction rate and input concentration of H 2 O 2. Phosphorus present in the iron ore is locked up with the ore. During leaching of the iron ore in the required solutions, as phosphorus is being oxidized by oxygen produced from

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Solid State Desulphurization of Iron Ore and Empirical ...

2013-7-31 · by rate of phosphorus removal during the leaching process. MATERIALS AND METHODS . Agbaja (Nigeria) iron ore was mined and collected from the deposit, beneficiated and the resultant concentrate used for this research work. The iron ore was crushed for the purpose of liberation size. Tyler standard was employed to produce particle size of 250µm .

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Colorimetric Determination of Phosphorus in Iron Ore

According to the melting behavior of high phosphorous iron ore gaseous reduction product at 1473 K, the iron grains remain in solid state, and the other minerals have formed into slag phase, as ...

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New Methods for High Phosphorus Oolitic Hematite ...

for the apatite in iron ore to reduce into molten iron, but not conducive to the removal of phosphorus. Through optimisation of process parameters, dephosphorisation rate of high phosphorus hematite is more than 60 per cent by solid state reduction roasting-magnetic separation' process while that is up to 80 per cent by iron nugget process.

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Dephosphorization Treatment of High Phosphorus Iron Ore

The solid state carbothermic reduction mechanism of high phosphorus iron ore was evaluated from the results obtained from the TG-DTA analysis, and from the CO-C02 gas species evolution behavior observed from the mass

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Upgrading iron and removing phosphorus of high

2019-11-20 · UpgradIng Iron and reMovIng phoSphorUS of hIgh phoSphorUS oolItIc Iron ore By SegregatIon roaStIng wIth calcIUM chlorIde and calcIUM hypochlorIte J. Xiao a, b, w. ding b, y. peng b, Qi. wu b, Z. chen b, Z. wang b, J. wang b, t. peng b, * a The State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and Technology, Wuhan ...

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Phosphorus Treatment and Removal Technologies

2012-10-4 · be in the range of 1.2 to 4.0 moles aluminum or iron per mole of phosphorus. The pH value is an important factor for efficient removal of phosphorus using alum or other salts, as the solubility of their precipitates vary with pH. Phosphorus removal is most efficient in the pH range of 5 to 7 for alum and of 6.5 to 7.5 for ferric salts since their

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Optimizing the slag system for phosphorus removal in a

2018-6-6 · other terminology like bloom iron or sponge iron, from its porous sponge-like morphology, is also common (8) (6). Solid state reduction enables an energy efficient production but offers little in the way of impurity removal, as the otherwise kinetically efficient liquid

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Amenability for processing of oolitic iron ore concentrate ...

2013-6-1 · The removal of phosphorus from iron ore using a low temperature heat treatment with additives, followed by alkaline or water leaching, has been tested by Fisher-White et al., (2009), with phosphorus being lowered from 0.145–0.075%.

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Removal of Phosphorous from Steel Produced ... -

Request PDF | Removal of Phosphorous from Steel Produced by Melting Sponge Iron in Induction Furnace | In secondary route of steelmaking, production through induction melting furnace contributes ...

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Predictability of Phosphorus Removal Based on ...

2020-8-21 · Phosphorus Removal Based on Simultaneously Removed Sulphur and Mass-Input of Iron Ore Leached in Potassium Hydroxide.” Physics and Materials Chemistry. 1, no. 2 (2013): 27-33. doi: 10.12691/pmc-1-2-4. 1. Introduction . The adverse effects of high phosphorus content in iron ore and associated finished products such as iron and steel

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Dephosphorization Treatment of High Phosphorus Iron

The solid state carbothermic reduction mechanism of high phosphorus iron ore was evaluated from the results obtained from the TG-DTA analysis, and from the CO-C02 gas species evolution behavior observed from the mass

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Optimizing the slag system for phosphorus removal in a

2018-6-6 · other terminology like bloom iron or sponge iron, from its porous sponge-like morphology, is also common (8) (6). Solid state reduction enables an energy efficient production but offers little in the way of impurity removal, as the otherwise kinetically efficient liquid-liquid interface reactions are non-existent.

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Model for Predicting the Concentration of Phosphorus ...

2013-4-7 · for removing phosphorus from Agbaja (Nigeria) iron oxide ore. The results of this work [16] show that phosphorus removal efficiencies at the end of the 49 days of the leaching process are 81, 63 and 68% for 5, 100 and 250 mesh grain sizes respectively. An attempt has been made in the past [17] to leach Itakpe iron oxide ore using oxalic acid ...

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Detecting non-uniform phosphorus distribution in

ore was directly reduced in the solid state by charcoal to produce almost pure iron. The solid-state reduced bloom, from the bloomery furnace, was hammered immediately after removal from the furnace in order to squeeze out the still-liquid slags present in the pores of the hot bloom. As it was impossible to remove the slag completely, some of

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Detecting non -uniform phosphorus di stribution in

2005-8-8 · ore was directly reduced in the solid state by charcoal to produce almost pure iron. The solid -state reduced bloom, from the bloomery furnace, was hammered immediately after removal from the furnace in order to squeeze out the still-liquid slags present in the pores of the hot bloom. As it was impossible to remove the slag completely, some of

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Phosphorous removal from wastewater - Lenntech

Phosphorous removal processes. The removal of phosphorous from wastewater involves the incorporation of phosphate into TSS and the subsequent removal from these solids. Phosphorous can be incorporated into either biological solids (e.g.

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DRI production | International Iron Metallics Association

DRI production. Direct reduction of iron is the removal of oxygen from iron ore or other iron bearing materials in the solid state, i.e. without melting, as in the blast furnace. The reducing agents are carbon monoxide and hydrogen, coming from reformed natural gas, syngas or coal. Iron ore is used mostly in pellet and/or lumpy form.

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Effects of Reaction Conditions on Phosphorus Removal by ...

Abstract: Steel slag has already been used to deal with all kinds of wastewater due to its larger specific surface area， porosity and density， its easy solid-liquid separation and not easy to form secondary pollution. In order to ensure the influence of reaction conditions on the steel slag phosphorus removal effect， many factors such as phosphorus in sewage initial concentration ...

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Iron and manganese removal by using manganese ore ...

Similar iron and manganese removal was later observed in a pilot-scale gravel-manganese-ore constructed wetland, even though the manganese ore portion in total volume was reduced from 100% (in the lab-scale) to only 4% (in the pilot-scale) for the sake of cost-saving.

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