An innovative study for pretreatment of high-phosphorus oolitic hematite via high-temperature heating: phase, microstructure, and phosphorus distribution analyses

Li, Wenbo; Liu, Dongquan; Han, Yuexin; Li, Yanjun; Guo, Runnan

doi:10.1016/j.apt.2023.103996

Cited by 5 publications

(1 citation statement)

References 34 publications

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“…Phosphorus is typically considered a harmful element in the steelmaking process, necessitating dephosphorization as a necessary step prior to steel production. Several methods, such as smelting dephosphorization [6][7][8][9], bio-leaching [10][11][12] and chemical leaching [13][14][15], have been developed to remove phosphorus. However, there have also been reports on the simultaneous recovery of iron and phosphorus to prepare Fe-P alloys for high-phosphorus steel production [16].…”

Section: Introductionmentioning

confidence: 99%

Flotation Dephosphorization of High-Phosphorus Oolitic Ore

Chen,

Zhang,

Zou

et al. 2023

Minerals

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The feasibility of dephosphorization using the flotation process and its mechanism of high-phosphorus oolitic hematite were discussed in this paper. The results showed that phosphorus minerals mainly exist in the form of collophane, which can be divided into three types. Block collophane and band collophane could be effectively removed through flotation, while the third type could not be eliminated through physical concentration alone. 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% phosphorus with a flotation recovery rate of 82.43%. The study of the flotation mechanism revealed that, in the presence of starch and the lab-made fatty acid, there was both physical absorption and chemisorption occurring on the surfaces of apatite. However, only very weak physical absorption was observed on the surface of hematite.

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