iron ore phosphorus removal

  • (PDF) Processes for phosphorus removal from iron ore A

    Phosphorus can be removed from iron ore by very different routes of treatment. The genesis of the reserve, the mineralogy, the cost and sustainability define the technology to be applied. The...

  • Processes for phosphorus removal from iron ore a review

    Biometallurgy is an option for the removal of phosphorus of iron ore, as there are many microorganisms, especially in environments with limited nutrients which are able to extract the phosphorus contained in minerals (Nautiyal, 1999).

  • Removal of Phosphorus From High Phosphorus Iron Ores

    The selective HCl leaching method was used to remove phosphorus from high phosphorus iron ores. The hydroxyapatite in high phosphorus iron ores was converted into soluble phosphate during the process of HCl leaching. The effects of reaction time, particle size, hydrochloric acid concentration, reaction temperature, liquid-solid ratio and stirring strength on

  • Technological Challenges of Phosphorus Removal in High

    Effective phosphorus removal procedures from high-phosphorus iron ores are very likely to be ore-specific due to the significant variations in ore compositions, and to the presentation of phosphorus in the various high-phosphorus iron ores. Irrespective of ore composition, a general processing chart for phosphorus removal will have some common steps, including:

  • Removal of Phosphorus from High Phosphorus Iron Ores

    Then, crosscurrent acid leaching was employed to remove phosphorus from high phosphorus iron ores in Wushan Mountain and the changes in dephosphorization ratio, iron loss and acid concentration was observed during the leaching. The results showed that the phosphorus in Wushan iron ores could be removed selectively by acid leaching.

  • The removal of phosphorus from iron ore by leaching with

    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 slightly improved upon leaching. The

  • 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

  • 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

  • Phosphorus Removal of High Phosphorus Iron Ore by Gas

    01.09.2010· ScienceDirect JOURNAL OF IRON AND STEEL RESEARCH, INTERNKMONAL. 2010, 17(9): 01-06 Phosphorus Removal of High Phosphorus Iron Ore by Gas-Based Reduction and Melt Separation TANG Hui-qing,GUO Zhan-cheng,ZHAO Zhi-long (Key Laboratory of Ecological and Recycle Metallurgy of Ministry of Education, University of

  • Removal of Phosphorus From High Phosphorus Iron Ores

    Processes that had been employed for phosphorus removal from iron ores include thermal treatment [7,21,24,, microwave treatment [38,, ultrasonic treatment, acid leaching [12,17,20,49,, alkaline...

  • Improvement of Phosphorus Removal from Iron Ore Using

    a successful and economic process to remove phosphorus from the high phosphorus iron ores would significantly extend the reserves of high grade low phosphorus iron ores, and develop iron and steel industries [16].

  • 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

  • Removal of Phosphorus from High Phosphorus Iron

    Then, crosscurrent acid leaching was employed to remove phosphorus from high phosphorus iron ores in Wushan Mountain and the changes in dephosphorization ratio, iron loss and acid concentration was observed during the leaching. The results showed that the phosphorus in Wushan iron ores could be removed selectively by acid leaching. After three-stage

  • Technological Challenges of Phosphorus Removal in High

    Due to the very high affinity of iron oxides and hydroxides for phosphorus, a phenomenon much exploited in environmental chemistry and waste water management to remove phosphorus from polluted water, phosphorus removal from iron ore is not a trivial process, particularly when the phosphorus is predominantly finely distributed and/or adsorbed onto mineral surfaces. The

  • Removing phosphorus from iron National Research

    To remove phosphorus from iron to a desired level, a charge of the iron is melted in a vessel followed by either (i) supplying gas such as 40% CO 2 +9% CO+51% H 2 to the charge before melting is complete, or (ii) adding, to the charge, iron which is partly or wholly oxidized equivalent to adding iron ore of up to 8% of the charge weight, or a combination of (i) and (ii), such as

  • Processes for phosphorus removal from iron ore a

    Processes for phosphorus removal from iron ore a review . By Antônio Clareti Pereira and Rísia Magriotis Papini. Cite . BibTex; Full citation; Publisher: 'FapUNIFESP (SciELO)' Year: 2015. DOI identifier: 10.1590/0370-44672014680202. OAI identifier: Provided by: MUCC

  • Review Phosphorus Removal of High Phosphorous Oolitic Iron

    associated with the goethite in high-phosphorus iron ores can be removed to 0.075% P (0.15 wt% in raw ore) using a heat treatment at 573 K–623 K for

  • Technological Challenges of Phosphorus Removal in High

    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,

  • Removal of phosphorous through roasting of oolitic iron

    Corpus ID: 33936377. Removal of phosphorous through roasting of oolitic iron ore with alkaline earth additives @inproceedings{Ionkov2012RemovalOP, title={Removal of phosphorous through roasting of oolitic iron ore with alkaline earth additives}, author={Krassimir Ionkov and S. Gaydardzhiev and D. Bastin and A. C. Araujo and M. Lacoste}, year={2012} }

  • Amenability for processing of oolitic iron ore

    01.06.2013· 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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