Ji Study On Dephosphorization Technology For High Phosphorus

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 the range of 0.0047 …

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.

Removal of phosphorus from iron ores by chemical leaching

CUI Ji-rang, FANG Qi-xue. The present status and trends of dephosphorising of high phosphorus iron ore[J]. Multipurpose Utilization of Mineral Resources, 1998(6): 20–24. …

Experimental Study on Dephosphorization of High-Phosphorus …

The Transformation Law of Phosphorus. X-ray diffraction analysis of dephosphorized slags and Mn–Si alloys after dephosphorization was carried out, and the results are shown in Fig. 2.Without the addition of Al-based dephosphorization agent, P element exists in the form of 6 · 2CaO · SiO 2 –3CaO · P 2 O 5 solid solution and 3FeO · P 2 O 5 in the …

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 process was studied by X-ray …

A new iron recovery and dephosphorization approach from high‑phosphorus …

Deep dephosphorization of high‑phosphorus oolitic iron ore (HPOIO) is extremely difficult because of its refractory characteristics. A new approach for simultaneous iron recovery and dephosphorization from HPOIO by oxidation roasting – gas-based reduction (ORGR) and magnetic separation process was developed. The underlying mechanism was …

Iron recovery and dephosphorization behaviors from …

0.23%. However, this process has high iron loss and low dephosphorization efficiency, which is not an excellent treatment method. These traditional separation technolo-gies are difficult to obtain products with high TFe and low phosphorus content. They have failed to efficiently recover iron and dephosphorization, and it is necessary to ...

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 Technology}, year ...

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.

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 Hubei ...

Research on efficient utilization of high-phosphorus oolitic …

The paper proposes the innovative technology of hydrogen mineral phase transformation–magnetic separation–acid leaching for iron enrichment and dephosphorization, based on the mineralogical characteristics of high phosphorus oolitic hematite and difficulties that make it difficult to utilize traditional beneficiation for separation. The influences of the …

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'.

Experimental Study on Dephosphorization of High …

Procedure. In this experiment, the slag system composition as shown in Table 1 was used to conduct dephosphorization experiment on Mn–Si alloys with or without Al-based …

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 …

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

Clean production of Fe-based amorphous soft magnetic …

Separated preparation of prealloys and amorphous alloys results in severe solidification–remelting and beneficial element removal–readdition contradictions, which markedly increase energy consumption and emissions. This study offered a novel strategy for the direct production of FePC amorphous soft magnetic alloys via smelting reduction of high …

Phosphorus Removal of High Phosphorus Iron Ore by Gas …

To re- move phosphorus from the high phosphorus iron ore has been researched in a number of countries and many processes have been developed for various …

1,2,3,*, Yushu Zhang 1,2,3, Kai Zou 1,2,3 and Feilong Zhang

Flotation research reveals that the laboratory-produced fatty acid serves as an effective collector for high-phosphorus oolitic hematite. A favorable result was achieved, with …

Effect of additives on iron recovery and dephosphorization …

The effect of CaCO3, Na2CO3, and CaF2 on the reduction roasting and magnetic separation of high-phosphorus iron ore containing phosphorus in the form of Fe3PO7 and apatite was investigated. The results revealed that Na2CO3 had the most significant effect on iron recovery and dephosphorization, followed by CaCO3, the effect of CaF2 was negligible. The …

1,2,3,*, Yushu Zhang 1,2,3, Kai Zou 1,2,3 and Feilong Zhang

is limited for iron ore with high phosphorus content, and can not get higher quality prod-ucts [21–28]. Bacterial leaching dephosphorization, on the other hand, is time-consuming, and chemical leaching dephosphorization may pose environmental contamination risks. Generally speaking, flotation dephosphorization [29,30] is considered the most ...

Research on Reaction Mechanism of Vacuum Carbon …

In this study, the technology of direct reduction and dephosphorization of high-phosphorus iron ore under vacuum condition was proposed based on the coal-based direct r eduction method. Synthetic ...

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

Removal of phosphorus from iron ores by chemical leaching

CUI Ji-rang, FANG Qi-xue. The present status and trends of dephosphorising of high phosphorus iron ore[J]. Multipurpose Utilization of Mineral Resources, 1998(6): 20–24. (in Chinese) HUANG Jian-ling, YANG Yun-mei, XIE Hong. A study on the dephosphorization of iron ore by phosphorus dissolving agent accompanied with thiobacillus[J].

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

Behavior of Phosphorus during Reduction Roasting of …

In this study, by using chemical analysis, chemical phase analysis, XRD analysis, optical microscopy, and scanning electron microscopy analyses, the behavior of phosphorus during reduction roasting of high-phosphorus content oolitic hematite ore and the effect of sodium salts on behavior of phosphorus were studied. ... T. Lei and M. Rao et al ...

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 Technology}, …

Effect of coal levels during direct reduction roasting of high

J. Ji Study on dephosphorization technology for high-phosphorus iron ore. Min Metall (2003) There are more references available in the full text version of this article. Cited by (68) ... To provide a new method for the dephosphorization of high-phosphorus oolitic iron ore (HPOIO) by reduction roasting, the feasibility of the high-efficiency ...

Impact of slag composition activity on the behavior of phosphorus …

Apply the slag ion theory to calculate the distribution ratio formula of phosphorus in the smelting reduction process of high-phosphorus iron ores, according to which it is found that main factors ...

Enhanced iron extraction from high-phosphorus waste …

In the study of Ji et al.(Ji, ... Successful iron extraction and dephosphorization from high-phosphorus limonite by a process of grinding-SMR-stage grinding and magnetic …

Phosphorus removal performance and biological dephosphorization process

As far as we know, it was less documented that how biological phosphorus removal process changes with the season and vegetation species in IVCWs. Furthermore, the application of enzymes related to phosphorus metabolism and high-throughput sequencing technology, with regard to the biological process of phosphorus removal in IVCWs, is rather …