Migration behavior of iron and phosphorus during gas …
Gas-based reduction at a slow rate to capture migration route of P from original apatite to reduced iron. A detailed statistical analysis was performed for the distribution of P and Fe. Metallic iron provides a site for gasified P, which inhibits volatilization of P and contributes to P …
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Green and efficient separation of iron and phosphorus from high …
With the increasing consumption of high-quality iron ore, realizing the efficient utilization of refractory iron ore resources is of strategic significance for the sustainable development of the iron and steel industry (Qin et al., 2023, Sahu et al., 2023, Yuan et al., 2019).Among refractory iron ores, high-phosphorus oolitic iron ore (HPOIO) has attracted …
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(PDF) Mixture of ilmenite and high phosphorus iron ore …
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 ...
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Phosphorus Removal from Goethitic Iron Ore with a …
Three West Australian high phosphorus iron ore fines (–6.3 mm) designated ore 1, ore 2 and ore 5 were used in this work. Ores 1 and 2 are examples of high phosphorus Brockman Iron Formation in the Pilbara and ore 5 was a high grade ore from within the Yilgarn Iron Province. Samples for the test work were prepared by splitting representative ...
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Effect of additives on iron recovery and dephosphorization …
The effect of CaCO 3, Na 2 CO 3, and CaF 2 on the reduction roasting and magnetic separation of high-phosphorus iron ore containing phosphorus in the form of Fe 3 PO 7 and apatite was investigated. The results revealed that Na 2 CO 3 had the most significant effect on iron recovery and dephosphorization, followed by CaCO3, the effect of …
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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 investigated …
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Direct Reduction of High-Phosphorus Oolitic Hematite: …
High-phosphorus (P) iron ore, particularly oolitic hematite, has remained unexploited due to technological and cost limitations in mining. Effectively developing this ore involves not just utilizing its iron content but crucially extracting P to reduce exploitation costs. Here, we applied a direct reduction-magnetic separation process to recover these valuable …
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Characterisation of phosphorus and other impurities in …
In the traditional roasting process of high-phosphorus iron ore (HPIO), a large amount of sodium or calcium salt needs to be added to enhance iron recovery and …
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Iron recovery and dephosphorization behaviors from high-phosphorus …
With the depletion of high-quality iron ore resources, high-phosphorus oolitic hematite (HPOH) has attracted great attention due to its large reserve and relatively high iron content. However, HPOH is very difficult to be used in ironmaking process due to its special structure. A two-step method of gas-based direct reduction and magnetic separation was thus …
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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 investigated …
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Understanding the high-grade iron ore market
The high-grade iron ore market is largely aligned with iron ore as a commodity in general. In the real world, however, iron units are not fungible commodities - we are increasingly seeing in …
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Effect of calcium compounds on direct reduction and …
phosphorus removal of high-phosphorus iron ore WU Shi-chao()1, LI Zheng-yao()1*, SUN Ti-chang()1, LI Xiao-hui()2, XU Cheng-yan()1 1. School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China; 2. School of Culture and Tourism, Qujing Normal ...
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Migration behavior of iron and phosphorus during gas …
In the traditional roasting process of high-phosphorus iron ore (HPIO), a large amount of sodium or calcium salt needs to be added to enhance iron recovery and dephosphorization, which leads to an ...
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Phosphorus Removal of High Phosphorus Iron Ore by Gas …
A new method (gas-based separation plus melt separation) has been proposed to remove phosphorus of the high phosphorus iron ore which was 1.25% of phosphorus content …
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Phosphorus reduction behavior of high phosphate iron ore …
High-phosphorus iron ore resource is considered a refractory iron ore because of its high-phosphorus content and complex ore phase structure. Therefore, the development of innovative technology to ...
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Comprehensive Utilization of Iron and Phosphorus from High-Phosphorus …
An innovative process of coal-based reduction followed by magnetic separation and dephosphorization was developed to simultaneously recover iron and phosphorus from one typical high-phosphorus refractory iron ore. The experimental results showed that the iron minerals in iron ore were reduced to metallic iron during the coal-based reduction and the …
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Preparation of Reduced Iron Powder from High-Phosphorus Iron Ore…
Dephosphorization is essential for utilizing high-phosphorus iron ore (HPIO), and this work prepared reduced iron powder via reductive roasting in a semi-industrial rotary kiln follower by magnetic separation. Under the conditions, reductive temperature of 1150°C, duration time of 60 min, mass ratio of briquettes to pea coal of 1:1, the ...
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Characterisation of phosphorus and other impurities in …
Australia's iron ore industry is undergoing a major transformation. Reserves of traditional high-grade ores are becoming depleted while the replacement ore types are lower in grade and sometimes require beneficiation to remove or minimise contaminants such as alumina, silica and phosphorus (Dukino et al., 2000).The phosphorus content of Australian iron ores is a …
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Phosphorus eaters—Using bacteria to purify iron ore
Michigan Tech researcher Tim Eisele is developing communities of live bacteria to inexpensively dissolve phosphorus from iron ore, allowing a low-phosphorus iron concentrate to be produced. "For finely dispersed …
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high phosphorus iron ore in china industry
Iron ore – Wikipedia, the free encyclopedia Apr 19, 2013 · Mining iron ore is a high volume … spectrum of industry… HOT STONE CRUSHING PLANT » 40TPH - 60TPH Crusher Plant
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High-phosphorus iron ore-Tuxingsun Mining Equipment
We offer comprehensive services including ore testing laboratories, global ore trade, and turnkey mining technology solutions. Our global expertise ensures efficient and sustainable mining …
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Dephosphorization Treatment of High Phosphorus Iron …
The dephosphorization treatment of the pre-reduced iron ore by me-chanical crushing and screening methods was evaluated as a function of the initial reduction condition, screen size, and the mechanical property of the reduced iron ore phase. KEY WORDS: high phosphorus iron ore; dephosphorization treatment; solid state reduction; mechanical
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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 reduction …
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XPS and FTIR spectroscopic study on microwave treated high phosphorus …
XPS survey scans of high phosphorus iron ore indicated the presence of Fe, O, Si, Ca and P (Fig. 13, Fig. 14, Fig. 15). It can be seen that the shift in the Fe (2p) peak binding energy corresponds to iron oxide as a main component of the iron ore whereas the shift in the O (1s) peak corresponds to oxygen, phosphate and iron oxides speciation ...
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Preparation of Reduced Iron Powder from High Phosphorus Iron Ore…
Dephosphorization is essential for utilizing high-phosphorus iron ore (HPIO), and this work prepared reduced iron powder via reductive roasting in a semi-industrial rotary kiln follower by ...
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Beneficiation of High Phosphorus Limonite Ore by …
largest importers of iron ore and is facing the risks of raw material shortage for the iron and steel industry.1) To elimi- ... billion ton of high phosphorus iron ore is in the Huimin region of Yunnan Province,5) and the limonite ore with an average of 0.80% phosphorus and 34% iron contributes to about 20% of the Huimin iron reverse. The lack ...
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Increasing Iron and Reducing Phosphorus Grades of Magnetic-Roasted High
High-phosphorus oolitic iron ore, treated by suspended flash magnetic roasting, contained 42.73% iron (mainly present as magnetite) and 0.93% phosphorus (present as collophane). Low-intensity magnetic separation (LIMS) was combined with reverse flotation to increase the iron and reduce the phosphorus contents of the roasted product. The results …
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A new way to efficient utilization of eggshell waste: As green
Reduction roasting of high-phosphorus oolitic iron ore (HPOIO) requires the addition of expensive alkali metal compounds to enhance dephosphorization. In this paper, the eggshell waste from the catering industry was used to replace traditional dephosphorization agents, which not only avoided environmental problems caused by mining, but also ...
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Phosphorus Removal of High Phosphorus Iron Ore by Gas …
Key words: HSC chemistry package; coexistence theory; slag structure; high phosphorus iron ore; gas-based reduc- tion; melt separation With the rapid development of iron and steel in- dustry in China, China has become one of the world's largest importers of iron ore and is facing the risks of raw material shortage for the iron and steel industry.
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Dephosphorization Treatment of High Phosphorus Iron …
The dephosphorization treatment Of high phosphorus iron ore by hand crushing and screen separation resulted in the low recovery of iron oxides. Phosphorus was not reduced in the solid state carbothermic reduction reaction of high phosphorus iron ore, but remained as P20s in the gangue phases. The observed chemical behavior of phosphorus in the
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