Synchronous enrichment of phosphorus and iron from a high-phosphorus oolitic hematite ore to prepare Fe-P alloy by direct reduction-magnetic separation process

2021 ◽  
Vol 28 (9) ◽  
pp. 2724-2734
Author(s):  
Si-wei Li ◽  
Jian Pan ◽  
De-qing Zhu ◽  
Cong-cong Yang ◽  
Zheng-qi Guo ◽  
...  
Keyword(s):  
Magnetic Separation ◽  
Direct Reduction ◽  
Separation Process ◽  
High Phosphorus ◽  
Hematite Ore ◽  
Oolitic Hematite Ore

Direct Reduction of High-phosphorus Oolitic Hematite Ore Based on Biomass Pyrolysis

2016 ◽  
Vol 23 (9) ◽  
pp. 874-883 ◽  
Author(s):  
Dong-bo Huang ◽  
Yan-bing Zong ◽  
Ru-fei Wei ◽  
Wei Gao ◽  
Xiao-ming Liu
Keyword(s):  
Direct Reduction ◽  
Biomass Pyrolysis ◽  
High Phosphorus ◽  
Hematite Ore ◽  
Oolitic Hematite Ore

scholarly journals Effect of Coal Type on the Reduction and Magnetic Separation of a High-phosphorus Oolitic Hematite Ore

2015 ◽  
Vol 55 (3) ◽  
pp. 536-543 ◽  
Author(s):  
Wen Yu ◽  
Tichang Sun ◽  
Qiang Cui ◽  
Chengyan Xu ◽  
Jue Kou
Keyword(s):  
Magnetic Separation ◽  
High Phosphorus ◽  
Hematite Ore ◽  
Oolitic Hematite Ore ◽  
Coal Type

Industry Test on Phosphorus Removal and Direct Reduction of High-Phosphorus Oolitic Hematite Ore

2011 ◽  
Vol 402 ◽  
pp. 535-541 ◽  
Author(s):  
Yong Li Li ◽  
Ti Chang Sun ◽  
Jue Kou ◽  
Cheng Yan Xu ◽  
Zhan Hua Liu ◽  
...  
Keyword(s):  
Metallic Iron ◽  
Phosphorus Removal ◽  
Phosphorus Content ◽  
Direct Reduction ◽  
Reduction Roasting ◽  
X Ray ◽  
High Phosphorus ◽  
Hematite Ore ◽  
Iron Grade ◽  
Oolitic Hematite Ore

Industry test on phosphorus removal and direct reduction of the “Ningxiang type” high-phosphorus oolitic hematite ore has been carried out in a tunnel kiln on the basis of laboratory experiment. The iron grade and phosphorus content of the initial sample are 42.46% and 0.867%, respectively. The results showed that high-phosphorus oolitic hematite could be exploited on industrial scale, with the new process direct reduction roasting – grinding – magnetic separation, and that the final concentrate with an iron grade 92.56%, iron recovery 82.77% and phosphorus content 0.089% was obtained under the optimal conditions. Besides, X-ray diffraction (XRD) and scanning electron microscope with X-ray energy dispersive spectrum (SEM-EDS) were used to analysis the mechanism of phosphorus removal and direct reduction. It was shown that oolitic structure was destroyed, and metallic iron particle coarsening was obvious, besides fluorapatite particles were dispersed in the gangue by diffusion during the reduction roasting process. The liberation of metallic iron and gangue can be achieved by grinding, so high iron grade and low phosphorus content concentrate can be obtained after magnetic separation.

Preparation of Iron Carbide from High Phosphorus Oolitic Hematite

2014 ◽  
Vol 881-883 ◽  
pp. 98-101
Author(s):  
Guang Qiang Li ◽  
Heng Hui Wang ◽  
Jian Yang ◽  
Jiang Hua Ma
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Iron Carbide ◽  
Xrd Analysis ◽  
Raw Material ◽  
Zonal Distribution ◽  
High Phosphorus ◽  
Hematite Ore ◽  
Oolitic Hematite Ore ◽  
Scanning Electron

In order to find a new way to utilize the high phosphorus oolitic hematite ore as raw material for steelmaking, the reduction and carburization of high phosphorus oolitic hematite by the gas of CH4-H2were studied. High phosphorus oolitic hematite, reduction and carburization products were investigated by the means of XRD and scanning electron microscope. The SEM-EDS and XRD analysis show that the main compositions of this ore are hematite and quartz, main microstructure is oolitic cluster with the zonal distribution of hematite and apatite, and iron carbide can be prepared from high phosphorus oolitic hematite.

Test Research on HIMS-Reverse Flotation of Oolitic Hematite of Longyan Iron Mine

2013 ◽  
Vol 753-755 ◽  
pp. 24-27 ◽  
Author(s):  
Shu Xian Liu ◽  
Jin Xia Zhang ◽  
Miao Chen ◽  
Zhi Shuai Xu
Keyword(s):  
Magnetic Separation ◽  
Reverse Flotation ◽  
Test Results ◽  
Flotation Reagents ◽  
High Gradient Magnetic Separation ◽  
Iron Concentrate ◽  
Iron Mine ◽  
Hematite Ore ◽  
Reverse Floatation ◽  
Oolitic Hematite Ore

In order to better exploit and utilize the oolitic hematite ore resource in Zhangjiakou region, staged grinding-separation process consisting of high intensity magnetic separation(HIMS) and reverse floatation was adopted in the beneficiation test on the regionally representative oolitic hematite ore of Longyan Iron Mine, Xuan Stee1. The test results indicate that，with Slong pulsating high gradient magnetic separation as HIMS equipment，with NaOH，starch，CaO and TS as flotation reagents，and at a grind of 65％ -200 mesh for the primary grinding and 95％-200 mesh for the secondary grinding，an iron concentrate grading 62.34％ and having an iron recovery of 53.07％ can be achieved after two stage HIMS and one roughing—one cleaning reverse flotation.

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