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  • (PDF) Biodephosphorization of iron ores

    Biodephosphorization of iron ores. January 2010; Revista Latinoamericana de Metalurgia y Materiales 30(2):124-135; Project: Biological dephosphorization of iron ore; Authors: Pedro Delvasto

    NTERNATIONAL OURNAL OF SCIENCES AND NGINEERING OL O

    Biodephosphorization of Iron ore using Leptospirillum Ferrooxidans T. O. Chime Nigeria Abstract– An attempt has been made in this study to optimize the processing parameters for the biodephosphorization and bio beneficiation using leptospirillum ferrooxidans. Standard central composite design with 22 full fractional was used to develop the models. The models were optimized

    Removal of phosphorus from iron ores by chemical

    01/12/2006· 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. The results show that phosphorus occurring as apatite phase could be removed by alkali-leaching, but those occurring in the iron

    Mineral-phosphate solubilization activity of iron ore

    Implications of these findings on biodephosphorization of iron ores were discussed. Keywords: iron ore; phosphate solubilization; biobeneficiation; Burkholdelia spp; Aspergillus niger. 1 Introduction Many current iron ore resources contain over 0.08 w% of P, making this material useless for the manufacture of metallic iron and steel. Geochemical conditions during deposition of iron ores permit

    Dephosphorization of Iron Ore Bearing High Phosphorous by

    consumed a large amount of high grade iron ore that import-ed from Australia and Brazil. As a result, the price of high grade ores consistently increases. Therefore, there’s an urgent need to compensate the raw material cost by using 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

    Removal of phosphorus from iron ores by chemical

    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. The results show that phosphorus occurring as apatite phase could be removed by alkali-leaching, but those occurring in the iron

    Mineral-phosphate solubilization activity of iron ore

    Implications of these findings on biodephosphorization of iron ores were discussed. Keywords: iron ore; phosphate solubilization; biobeneficiation; Burkholdelia spp; Aspergillus niger. 1 Introduction Many current iron ore resources contain over 0.08 w% of P, making this material useless for the manufacture of metallic iron and steel. Geochemical conditions during deposition of iron ores permit

    Optimization of Process Parameters for the

    Biodephosphorization of iron ore using Acidothiobacillus Feroxidoms, New York Science Journal 4(1) 1-6. Field, I, Franklin, T. and Lampkin, M.(1968) Process for removing phosphorus from iron ores. Us patent No.3, 402, 041. Gooden, J. Waller, W. and Allen, R.(1974). ADEMPHOS a chemical process for decomposition of iron ore. Proceedings of the National Chemical Engineering . Conference, process

    Mobilization of phosphorus from iron ore by the

    01/01/2009· 1. Introduction. Phosphate, which is frequently found as a constituent of iron ore, is deleterious in the manufacture of iron and steel (Kokal, 1990).Heat treatment and subsequent leaching is a way for upgrading high-P iron ores (Feld et al., 1968, Gooden et al., 1974, Muhammed and Zhang, 1989, Kokal, 1990, Araujo et al., 1994, Cheng et al., 1999, Kokal et al., 2003).

    Removal of Phosphorus From High Phosphorus Iron

    01/05/2011· HE Liang-ju, ZHOU Jian-min, HU Fang-ren, et al. Charac- teristics of Meishan Iron Ore With High Phosphorous-Bearing [5] [6] and Feasibility of Biodephosphorization [J]. Gold Journal, 2000, 2(1): 26 (in Chinese). Forssberg R, Asolfsson G. Dephosphorisation of High Phos- phorus Iron Ores by Means of Acid Leaching [J]. Erzmetal, 1981(34): 316. YU Zhang, Mamoun Muhammed. An Integrated

    Mineral‐Phosphate Solubilization Activity of Iron ore

    The value of iron ore is adversely affected by phosphorus in concentrations over 0.03% by weight. The present research concerns the use of metabolic products of aPenicillium-like fungus to leach

    IJMSE Volume 4, Issue 2

    Optimization of Process Variables for the Biodephosphorization of Iron ore using Leptospirillum Ferrooxidans T. O. Chime Abstract– An attempt has been made in this study to optimize the processing parameters for the biodephosphorization and bio beneficiation using leptospirillum ferrooxidans. Standard central composite design with 22 full fractional was used to develop the models. The models

    BENEFICIATION, DEPHOSPHORIZATION AND

    30/11/2017· Iron ores are used in blast furnace for the production of pig iron; Agbaja Iron ore has an estimated reserve of over I billion metric tonnes. 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

    biodephosphorization Nnamdi Azikiwe University Digital

    Posts about biodephosphorization written by naudigitallibrary. Nnamdi Azikiwe University Digital Library. Digital Library for Online resource sharing among the University communities. Posts Tagged ‘biodephosphorization’ BENEFICIATION, DEPHOSPHORIZATION AND DESULPHURIZATION OF AGBAJA IRON ORE April 30, 2012 . AUTHOR: CHIME, ONYEJIUWA THOMPSON. DEPARTMENT:

    Central composite design in optimization of the factors of

    He L. and Zhou J. Characteristics of Meishan iron ore with high phosphorous-bearing and feasibility of biodephosphorization. Gold Journal, 2000: 2(1):26-29. [9]. Kokal H.R. The origin of

    IJMSE Volume 4, Issue 2

    Optimization of Process Variables for the Biodephosphorization of Iron ore using Leptospirillum Ferrooxidans T. O. Chime Abstract– An attempt has been made in this study to optimize the processing parameters for the biodephosphorization and bio beneficiation using leptospirillum ferrooxidans. Standard central composite design with 22 full fractional was used to develop the models. The models

    BENEFICIATION, DEPHOSPHORIZATION AND

    30/04/2012· Iron ores are used in blast furnace for the production of pig iron; Agbaja Iron ore has an estimated reserve of over I billion metric tonnes. 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

    Extraction And Beneficiation Of Ore And Minerals 2004

    Key words: Acidothiobacillus ferroxidans,Biodephosphorization, Iron Ore, beneficiation.The chemical by-products attack the gangue minerals contained in the ore, dissolving them and thus producing their selective removal (Jain and Sharma, 2004).

    biodephosphorization Nnamdi Azikiwe University Digital

    Posts about biodephosphorization written by naudigitallibrary. Nnamdi Azikiwe University Digital Library. Digital Library for Online resource sharing among the University communities. Posts Tagged ‘biodephosphorization’ BENEFICIATION, DEPHOSPHORIZATION AND DESULPHURIZATION OF AGBAJA IRON ORE April 30, 2012 . AUTHOR: CHIME, ONYEJIUWA THOMPSON. DEPARTMENT:

    Central Composite Design in Optimization of the Factors

    Iron ore samples of Agbaja iron ore collected from National Metallurgical Development Centre (N.M.D.C), He L. and Zhou J. Characteristics of Meishan iron ore with high phosphorous-bearing and feasibility of biodephosphorization. Gold Journal, 2000: 2(1):26-29. [9]. Kokal H.R. The origin of phosphorous in iron making raw materials and methods of removal. AIME Proceeding, 51 st Annual

    how to mines remove phosphorus from iron ore

    Biodephosphorization of Iron Ore using Acidothiobacillus · PDF 文件 . An attempt has been made to investigate the removal of phosphorus from Agbaja iron ore 08 wt%) are extracted leaving many iron mines around the world enriched in un-tradable, high phosphorus iron ore (Lucky Mines. Oxygen-iron bonds are strong, and to remove the iron from the oxygen, a stronger elemental bond must

    (PDF) Biobenefication of Sishen Hematite Iron Ore, using

    Biobenefication of Sishen Hematite Iron Ore, using bacterial cultures to remove potassium (Muscovite) and phosphorous (Apatite) 2008. Heinrich Geyer. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 37 Full PDFs related to this paper. READ PAPER. Biobenefication of Sishen Hematite Iron Ore, using bacterial cultures to remove potassium (Muscovite

    The Mechanism of Biodephosphorization of Phosphorus-rich

    Dephosphorization of phosphorus-rich rhodochrosite-poor by Bacillus pulvifaciens has been investigated, the mechanism of biodephosphorization have been discussed. The result of researches show that the main processes of dephosphorization are the uptake of by microorganisms and dissociating function of the apatite by the metabolic products of microbes.

    CN102828021B Phosphosiderite microwave coupling

    The invention provides a phosphosiderite microwave coupling dephosphorization method. The method comprises the following steps of: as the microwave has a selective heating characteristic, and due to the dielectricity difference between phosphorus-enriched phase oxide and iron-enriched phase oxide in phosphosiderite, putting carbon-containing mineral aggregate pellets obtained by pelletizing

    氧化亚铁硫杆菌浸出铁矿石脱磷技术_姜涛_百度文库

    Research on biodephosphorization of Meishan high phosphorus iron ore[J]. Mining and Metallurgy, 2000, 9(1): 33?35. [14] 柳建设. 硫化矿物生物提取及腐蚀电化学研究[D]. 长沙: 中 南大学, 2002. LIU Jian-she. Bioextraction and corrosion electrochemistry of sulfide minerals[D]. Changsha: Central South University, 2002. [15] 石绍渊, 方兆珩 . 金属离子强化铁闪锌矿

    biodephosphorization Nnamdi Azikiwe University Digital

    Posts about biodephosphorization written by naudigitallibrary. Nnamdi Azikiwe University Digital Library. Digital Library for Online resource sharing among the University communities. Posts Tagged ‘biodephosphorization’ BENEFICIATION, DEPHOSPHORIZATION AND DESULPHURIZATION OF AGBAJA IRON ORE April 30, 2012 . AUTHOR: CHIME, ONYEJIUWA THOMPSON. DEPARTMENT:

    Central Composite Design in Optimization of the Factors

    Iron ore samples of Agbaja iron ore collected from National Metallurgical Development Centre (N.M.D.C), He L. and Zhou J. Characteristics of Meishan iron ore with high phosphorous-bearing and feasibility of biodephosphorization. Gold Journal, 2000: 2(1):26-29. [9]. Kokal H.R. The origin of phosphorous in iron making raw materials and methods of removal. AIME Proceeding, 51 st Annual

    (PDF) Biobenefication of Sishen Hematite Iron Ore, using

    Biobenefication of Sishen Hematite Iron Ore, using bacterial cultures to remove potassium (Muscovite) and phosphorous (Apatite) 2008. Heinrich Geyer. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 37 Full PDFs related to this paper. READ PAPER. Biobenefication of Sishen Hematite Iron Ore, using bacterial cultures to remove potassium (Muscovite

    The Mechanism of Biodephosphorization of Phosphorus-rich

    Dephosphorization of phosphorus-rich rhodochrosite-poor by Bacillus pulvifaciens has been investigated, the mechanism of biodephosphorization have been discussed. The result of researches show that the main processes of dephosphorization are the uptake of by microorganisms and dissociating function of the apatite by the metabolic products of microbes.

    technology process of removal of phosphorus from

    Model for Quantitative Analysis of Phosphorus Removed during . Engineering, Vol. 9, No.4 acid leaching process to remove phosphorus from the iron oxide ore for Predicting Phosphorus Removal in Relation to Weight of Iron Oxide Ore » Free Online Chat INVESTIGATION OF THE OPTIMUM DISSOLUTION TEMPERATURES OF from the iron ore, hence the need for the phosphorus

    how to mines remove phosphorus from iron ore

    Biodephosphorization of Iron Ore using Acidothiobacillus · PDF 文件 . An attempt has been made to investigate the removal of phosphorus from Agbaja iron ore 08 wt%) are extracted leaving many iron mines around the world enriched in un-tradable, high phosphorus iron ore (Lucky Mines. Oxygen-iron bonds are strong, and to remove the iron from the oxygen, a stronger elemental bond must

    Uses of Metals and Metallic Minerals PDF Free Download

    Since a little alumina does not require too much heat to melt, the fluidity of the slag can be maintained without incurring much cost—particularly if the alumina is added in the form of bauxite which is a cheap material (vide also the chapter “Iron Ore—Hematite”, specifications for pig iron). Thus, bauxite serves the triple purpose of maintaining fluidity and volume of the slag

    生物冶金技术年评_百度文库

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