ji study on dephosphorization technology for high phosphorus

Dephosphorization of Steels

Therefore, the possible rate limiting steps are mass transfer in the metal or slag phases or both, if it is assumed that there are no solid phases present in the slag capable of absorbing phosphorus. One of the studies on the kinetics of dephosphorization of Fe-C(sat)-P hot metal by oxidizing slags, shows that one of the …

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Effect of highly oxidizing converter dephosphorization slag …

XRD and SEM-EDS analysis results showed that phosphorus was mainly enriched in 2CaO·SiO 2-3CaO·P 2 O 5 solid solution. Infrared analysis results show that under the condition of high FeO and low basicity, properly increasing of basicity is beneficial to reduce the degree of polymerization of dephosphorization slag.

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Flotation Dephosphorization of High-Phosphorus Oolitic …

A lab-made fatty acid was identified as an effective collector for high-phosphorus oolitic hematite, resulting in a product containing 57.67% iron and 0.14% …

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Effect of highly oxidizing converter dephosphorization slag …

In order to study the effect of highly oxidizing dephosphorizing converter slag on the migration behaviour of phosphorus in molten steel, an industrial test was carried out on a 300t ...

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A study on beneficiation of low grade high-phosphorus …

The result showed that the iron ore concentrate, assaying 62.35% iron and 0.20% phosphorus content were achieved at the overall iron recovery of 90.54% and dephosphorization of 87.42% under the ...

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Strengthening iron enrichment and dephosphorization of high-phosphorus …

The efficient development and utilization of high-phosphorus oolitic hematite is of great strategic significance for the sustainable supply of iron-ore resources in China. In this paper, the mechanism of high-temperature pretreatment for enhancing the effect of iron enrichment and dephosphorization in the magnetization roasting-leaching …

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Development and application of new technology for ultra-low phosphorus

In this study, the dephosphorization slag with ultra-high Lp was studied, and the kinetic conditions of dephosphorization reaction were optimized too. The industrial production was carried out in a 200t converter in Shougang Jingtang, and the production process was 'KR-BOF-LF-VD-CC'.

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The Behavior of Phosphorus in the Hydrogen‐Based Direct …

Combining that with the outstanding dephosphorization capacity of the basic oxygen furnace (BOF), the route DR-smelter-BOF appears optimal for processing high-phosphorus iron ores. 1 Introduction Apart from special applications such as weather-resistant steels with patina [ 1 ] or solid-solution strengthened interstitial free …

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Dephosphorization kinetics of high-P-containing …

In this study, the P content of the final iron after 0–1,800 s dephosphorization was investigated at different slag composition conditions, and the dephosphorization kinetics of the reduced iron was …

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Effect of coal levels during direct reduction roasting of high

J. Ji. Study on dephosphorization technology for high-phosphorus iron ore. Min Metall, 12 (2) (2003), pp. 33-37. View in Scopus Google Scholar [3] ... Reducing roasting and a synchronized dephosphorization of a high-phosphorus oolite hematite. Min Metall Eng, 30 (1) (2010), pp. 29-31. Google Scholar

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Enhanced iron extraction from high-phosphorus waste …

Successful iron extraction and dephosphorization from high-phosphorus limonite by a process of grinding-SMR-stage grinding and magnetic separation-flotation. …

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Mechanism of Phosphorus Enrichment in …

technology, resulting in a mean dephosphorization efficiency of 91%, which is much higher than the efficiency (82%) obtained in the previous process [1]. Fang et al. [14] ap-plied the IDDSC technology on a 120-t steelmaking converter and studied the influence of the basicity and oxidizability of slag on the dephosphorization performance. Fifty

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Mechanistic insight into phosphorus migration pathways …

@article{Ji2024MechanisticII, title={Mechanistic insight into phosphorus migration pathways from oolitic hematite using in-situ observations during roasting and reduction process}, author={Guangheng Ji and Cihong Xiao and Xu Gao and You Zhou and Il Sohn and Shigeru Ueda and Wanlin Wang}, journal={Separation and Purification …

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Migration behavior of iron and phosphorus during gas …

DOI: 10.1016/j.mineng.2024.108765 Corpus ID: 270221833; Migration behavior of iron and phosphorus during gas-based reduction for high-phosphorus iron ore @article{Ji2024MigrationBO, title={Migration behavior of iron and phosphorus during gas-based reduction for high-phosphorus iron ore}, author={Guangheng Ji and Cihong …

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Influence of Mechanical Activation on Acid Leaching Dephosphorization

High pressure roll grinding (HPRG) and ball milling were compared to investigate the influence of mechanical activation on the acid leaching dephosphorization of a high-phosphorus iron ore concentrate, which was manufactured through magnetizing roasting-magnetic separation of high-phosphorus oolitic iron ores. The results …

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Phosphorus Removal of High Phosphorus Iron Ore by Gas …

JI Jun. Study on Dephosphorization Technology for High-Phosphorus Iron Ore [J]. Mining Metallurgy, 2003, 12(2): 33 (in Chinese). Google Scholar Manning C R, Fruehan R J. Behavior of Phosphorus in Direct-Reduced Iron and Hot Briquetted Iron [J]. Iron and Steelmaker, 2003, 30(4): 62. Google Scholar ZHANG Jian.

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Removal of phosphorus from iron ores by chemical leaching

Alkali-leaching and acid-leaching were proposed for the dephosphorization of Changde iron ore, which contains an average of 1.12% for phosphorus content. …

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Mechanistic insight into phosphorus migration pathways …

An in-depth understanding of the migration behaviour of phosphorus would be useful for the efficient separation of iron and phosphorus from high-phosphorus oolitic hematite. On the other hand, several investigations on the changes in oolitic structure using various techniques have been carried out in the past.

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Research on efficient utilization of high-phosphorus …

research, the enrichment of phosphorus and iron from high-phosphorus oolitic hematite utilizes the direct reduction-magnetic separation process [7, 21− 22]. The results show that a final alloy with an iron grade of 92.40% and a phosphorus content of 1.09% was obtained, with a high phosphorus content. The

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Separation of Iron and Phosphorus from High-Phosphorus …

The dephosphorization process of high-phosphorus iron ore mainly includes ... a lot of research has been done on the theory and technology of phosphorus reduction in high-phosphorus iron ore at home and abroad, and some progress has been made. ... The oolitic hematite with 47.64% T. Fe and 0.93% P used in this study was collected from …

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Smelting Potential of HIsmelt Technology for High-Phosphorus …

The iron recovery rate for high-phosphorus iron ore reached 92% with relatively high phosphorus content of pig iron about 0.28%under the reduction temperature of 1450 °C.

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Experimental Study on Dephosphorization of High …

Experimental Study on Dephosphorization of High-Phosphorus Mn–Si Alloys. Can Sun, Zizong Zhu, Wanyi Jiao, Chongyuan Zhang, Yingdong Wang, and Jintao Fan. Abstract …

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STUDY ON DEPHOSPHORIZATION OF HIGH-PHOSPHORUS …

Regarding the actual situation of the high-phosphorus iron ore,the present paper studies the dephosphorization of high-phosphorus hot metal by using Ca O-SiO 2-Fe O-Na2O-Al2O3 slag system. The results show that,under the same experimental conditions,when basicity of ω( Ca O) / ω( SiO 2) was 4,the effects of dephosphorization using …

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An innovative study for pretreatment of high-phosphorus …

Semantic Scholar extracted view of "An innovative study for pretreatment of high-phosphorus oolitic hematite via high-temperature heating: phase, microstructure, and phosphorus distribution analyses" by Wenbo Li et al. ... {Wenbo Li and Dongquan Liu and Yue-xin Han and Yanjun Li and Runnan Guo}, journal={Advanced Powder …

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Mixture of ilmenite and high phosphorus iron ore smelted …

In order to reasonably utilize the abundant resources of high-phosphorus iron ore and ilmenite in China, the technology of top-blown smelting reduction with oxygen enrichment was used to smelt the mixed ore of high-phosphorus iron and ilmenite. The effect, which is related to basicity, reduction temperature, carbon-oxygen ratio and time …

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Flotation Dephosphorization of High-Phosphorus Oolitic Ore

The feasibility of dephosphorization using the flotation process and its mechanism of high-phosphorus oolitic hematite were discussed in this paper. The …

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ji jun study on dephosphorization technology for high phosphorus

STUDY ON DEPHOSPHORIZATION TECHNOLOGY FOR HIGHPHOSPHORUS IRON ORE JI Jun (Beijing General Research Institute of Mining and Metallurgy,Beijing,China) In this paper,the importance of dephosphorization process in treatment of highphosphorus iron ore is discussed based on a review of the present situation in the concerned fieldsA ...

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Mass transfer of phosphorus in high-phosphorus hot-metal …

Mass transfer of phosphorus in high-phosphorus hot-metal refining was investigated using CaO-Fe t O-SiO2 slags at 1623 K. Based on a two-film theory kinetic model and experimental results, it was found that the overall mass transfer coefficient, which includes the effects of mass transfer in both the slag phase and metal phase, is in …

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Characterization studies on Agbaja iron ore: a high-phosphorus …

Jun JI (2003) Study on dephosphorization technology for high-phosphorus iron ore min. Metall 12:33–37. Google Scholar Matinde E, Hino M (2011) Dephosphorization treatment of high phosphorus iron ore by pre-reduction, mechanical crushing and screening methods. ISIJ Inter 51:220–227.

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Mechanistic insight into phosphorus migration pathways …

This study focused on insight into phosphorus migration mechanism for efficient separation of iron and phosphorus. Dissolution of apatite was affected by Fe/(Al + Si) …

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رقم 1688 ، طريق Gaoke شرق ، حي بودونغ الجديد ، شنغهاي ، الصين.

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