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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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Migration behavior of iron and phosphorus during gas …
On the contrary, phosphorus can be utilized to greatly enhance the economic value of the high-phosphorus iron ore (Yang et al., 2017, Udochukwu, 2019), instead of treating phosphorus as a harmful element.Phosphorus is an important chemical raw material, a necessary element for the growth of crops, and an important part of living matter (Avdalović et al., 2015, …
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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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Phosphorus removal from high phosphorus oolitic iron ore …
This paper reports the phosphorus removal of high phosphorus oolitic iron ore by acid leaching and its influence factors. The experimental ore is Exi high phosphorus oolitic iron ore with 0.5% phosphorus, 51.7% iron and 0.34% sulphur. After acid leaching, the P content decreases to about 0.07%, the iron loss during acid leaching is about 0.18%, and the S content is 0.35%, which …
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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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Gasification and Migration of Phosphorus from High …
with gangue minerals, which cause iron and phosphorus to be difficult to separate. High-phosphorus iron ore is a world-recognized complex refractory iron ore. 10) On account of the above-mentioned difficulties, in recent years, experiments using the high-phosphorus iron ore have been carried out to improve the iron grade while considering ...
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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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A novel direct reduction-flash smelting separation process of …
Phosphorus in high phosphorus oolitic hematite is mainly present in the fluoroapatite, and the temperature of coal-based reduction is generally above 1200 °C, in which case, the fluoroapatite is likely to be reduced together with the iron oxide, causing a large amount of P to beabsorbed into the metallic iron phase [27].In order to reduce the P content in metallic …
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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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Smelting Potential of HIsmelt Technology for …
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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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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High-Grade Iron Ores in the Laterite Weathering Crust after Banded Iron
In West Africa, in southeastern Guinea, in the Simandou Range region underlain by the Archean gneiss-granite basement, a north–south synclinorium structure is extended, that is composed of the Lower Proterozoic series of metamorphic rocks. A thick sequence of the banded iron formation (itabirites) with interlayers of phyllites and mica schists is exposed in cores of the …
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Simandou | Global
NZÉRÉKORÉ, GUINEA Africa's largest mining and related infrastructure project . The Simandou mountain range lies in the south-east of the Republic of Guinea, over a surface area more than 100km. Its subsoils contain the world class Ore …
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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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Simandou | Global
CONAKRY, Guinea--(BUSINESS WIRE)-- Rio Tinto and the Simfer1 joint venture (Simfer) reached an important milestone today by concluding key agreements with the Republic of Guinea and Winning Consortium Simandou2 (WCS) on …
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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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The Development of High-Phosphorus Iron Ore Sees a …
The global confirmed reserves of high-phosphorus iron ore exceed 20 billion tons, mainly distributed in countries such as Algeria, China, Kazakhstan, and Nigeria. Due to the abundant ooids, complex composition, fine-grained phosphorus mineral dissemination, low grade and high phosphorus content in this iron ore, it has been recognized by 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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Characterization studies on Agbaja iron ore: a high …
Optical microscopy results from a polished cross section of the ore (Fig. 1) show the oolitic structure of the ore, composed of lighter spherical grains in concentric layers embedded in a darker matrix. The presentation of the ore is consistent with the structure of oolitic ores.See more on link.springer
Migration behavior of iron and phosphorus during gas …
In this study, we presented simultaneous enrichment of iron (Fe) and phosphorus (P) to recover P from high-phosphorus iron ore and clarified the migration of P from the original …
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Simandou iron ore project update | Global
"Simandou will deliver a significant new source of high-grade iron ore that will strengthen Rio Tinto's portfolio for the decarbonisation of the steel industry, along with trans-Guinean rail and …
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Calcium Carbonate as Dephosphorization Agent in …
Calcium carbonate, renowned for its affordability and potent dephosphorization capabilities, finds widespread use as a dephosphorization agent in the direct reduction roasting of high-phosphorus oolitic hematite …
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Dephosphorization of high-phosphorus iron ore by direct …
This study developed a direct reduction route to smelt refractory high-phosphorus iron ores by using hydrogen-rich gas. The effects of temperature, gas composition, and gangue on the reduction behavior of iron ore pellets were investigated. Additionally, the migration behavior of phosphorus throughout the reduction-smelting process was examined. The apparent activation …
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Characterisation of phosphorus and other impurities in …
The test sample was high phosphorus Brockman iron ore fines (-1 mm) from the Hamersley Province in Western Australia (57.5 wt% Fe, 2.47 wt% Si, 2.15 wt% Al, 0.132 wt% P).
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Review on High Phosphorous in Iron Ore: Problem and …
Phosphorous is an undesired element present in iron ore used in the steel making process. It leads to an increase in overall production cost as well as deteriorated steel quality. The desired …
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Phosphorus Removal of High Phosphorous Oolitic Iron Ore …
The iron oxides in the high phosphorus iron ore are mainly in the type of Fe 2 O 3 and FeO. Assume that the total weight of the iron ore is "m" g, of which the Fe 2 O 3 weight is "a" g and the FeO weight is "b" g, then the total oxygen weight loss of Fe 2 O 3 and FeO are 3/10a g and 2/9b g respectively. The total iron in the raw ore ...
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(PDF) Gasification Behavior of Phosphorus during Hydrogen …
In order to realize the efficient utilization of high phosphorus iron ore resources, a new method of phosphorus gasification removal in hydrogen-rich sintering process was proposed.
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Simandou: World's largest untapped high-grade …
As the largest greenfield integrated mine and infrastructure investment in Africa, Rio Tinto's world-class Simandou iron ore project in Guinea will be co-developed as a joint venture between the Guinean State, Simfer …
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Removal of Phosphorus From High Phosphorus Iron Ores …
Key words: high phosphorus; iron ore; dephosphorus; selective leaching; hydrochloric acid; dephosphorization ratio China is rich in high phosphorus iron ores re- sources. The reserves of high phosphorus iron ore accounts for 14. 86% of total reserves and reaches 7. 45 Gt. The content of phosphorus is generally a few times or even hundreds of ...
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Simandou North: Arrow Minerals' Strategic High-Grade Iron Ore …
High-Grade Iron Ore: The ability to produce a premium +66% Fe product enhances its appeal in the global marketplace, where such products are in short supply and high demand. Global Market Alignment: With declining stocks of low-alumina iron ore, the project is positioned to meet a critical market need. The increasing focus on reducing carbon ...
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