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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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This paper presents the predictability of phosphorus removal based on simultaneously removed sulphur and mass input of iron ore leached in potassium hydroxide The reaction vessel containing the solution and ore was heated at a temperature of 600°C for 10minutes The model P = x 10 3 μ shows that the predicted concentration of removed phosphorus is dependent on the mass
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REMOVAL OF SULFUR AND PHOSPHOROUS FROM IRON ORE CONCENTRATE BY LEACHING Hassan REZVANI POUR Ali MOSTAFAVI Tayebeh SHAMS PUR Ghobad EBADI POUR Amir HAJI ZADEH OMRAN Department of Chemistry Shahid Bahonar University of Kerman Pajoohesh Sq Kerman 76169 14111 Iran Gole gohar Iron Ore Complex Km 50
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the iron grains remain in solid state and the other minerals have formed into slag phase as well as the tion and the phosphorus removal of metal phase become phosphorous iron ore gaseous reduction product at 1 473
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Coal based reduction followed by magnetic separation is an effective way to recover iron from high phosphorus containing oolitic hematite ore Given that high quantities of dephosphorization agent are needed to obtain low phosphorus reduced iron a novel approach is proposed by the authors Without prior phosphorus removal the phosphorus was enriched in the reduced iron during a reduction
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iron oxide ore through a process associated with hydrometallurgy Phosphorus was removed at a temperature of 250C and initial solution pH 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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Iron ore Wikipedia the free encyclopedia Increasing iron ore demand coupled with the depletion of high grade The typical magnetite iron ore concentrate has less than % phosphorus 3 7% silica and process as they require less beneficiation due to the higher iron content
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remove around 50 of the phosphorus values at all the temperature range studied from MECHANICAL 201 at National Institute of Technology Jamshedpur
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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 /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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The process entails a direct reduction of the iron ore removal of oxygen from the ore in solid state to metalize the ore at a critical temperature to make this possible The basic reduction reactions in a coal based DRI process is as follows C O2 = CO2 CO2 C = 2CO 3Fe2O3 CO = 2Fe3O4 CO2 Fe3O4 CO = 3FeO CO2 FeO CO = Fe
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Oct 05 2016· Phosphorus in steel makes it brittle For steel making the limit for phosphorus is one hundredth of one per cent for ten per cent of iron in the ore this is the so called Bessemer limit A Bessemer ore carrying 52% of iron must not have more than 052% of phosphorus and the sulphur should not exceed 04%
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With the present rates of iron ore consumption currently unusable high phosphorus iron ore deposits are likely to be the iron ores of the future as higher grade iron ore reserves are depleted Consequently the design and timely development of environmentally benign processes for the simultaneous beneficiation of high phosphorus iron ores and phosphorus recovery currently a technological
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Some studies have been published on the removal of phosphate from iron ore using acid producing microorganisms including filamentous fungi and iron oxidizing bacteria Buis 1995 BUIS P Bioremediation techniques for the removal of phosphorus from iron ore Michigan Michigan Technological University USA 1995 129p
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Chemical Analysis of High Phosphorous Iron Ore The chemical analysis of high phosphorous iron ore presents in Table I From which it is evident that iron ore contains 1 84 % P 2 O 5 and weight lose equal % TABLE I Analyses of high phosphorous iron ore percentage Compounds or elements Percentage Fe 2 O 3 % SiO 2 %
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—A lot of investigations have been carried out on direct reduction process of iron oxides by using hydrogen gas at different flow rate In the present work an attempt has been made to study the reduction behavior and kinetics of fired high
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The process entails a direct reduction of the iron ore removal of oxygen from the ore in solid state to metalize the ore at a critical temperature to make this possible The basic reduction reactions in a coal based DRI process is as follows C O2 = CO2 CO2 C = 2CO 3Fe2O3 CO = 2Fe3O4 CO2 Fe3O4 CO = 3FeO CO2 FeO CO = Fe
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This paper presents the predictability of phosphorus removal based on simultaneously removed sulphur and mass input of iron ore leached in potassium hydroxide The reaction vessel containing the solution and ore was heated at a temperature of 600°C for 10minutes The model P = x 10 3 μ shows that the predicted concentration of removed phosphorus is dependent on the mass
Get Price
REMOVAL OF SULFUR AND PHOSPHOROUS FROM IRON ORE CONCENTRATE BY LEACHING Hassan REZVANI POUR Ali MOSTAFAVI Tayebeh SHAMS PUR Ghobad EBADI POUR Amir HAJI ZADEH OMRAN Department of Chemistry Shahid Bahonar University of Kerman Pajoohesh Sq Kerman 76169 14111 Iran Gole gohar Iron Ore Complex Km 50
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removing phosphorus from Agbaja Nigeria iron oxide ore The results of this work [14] 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 [15] to leach Itakpe iron oxide ore using oxalic acid
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May 01 2011· Issue 5 Removal of Phosphorus From High Phosphorus Iron Ores by Selective HC1 Leaching Method 3 Hydrochloric acid roncentratiod Fig 3 Change of dephosphorization ratio with hydrochloric acid concentration Effect of reaction temperature When the reaction time hydrochloric acid con centration stirring
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