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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.
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The increasing demand for iron ore in the world causes the continuous exhaustion of magnetite resources. The utilization of high-phosphorus iron ore becomes the focus.
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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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DOI: 10.1177/030607 Corpus ID: 273734410; Experimental study on parameters optimisation of adding vanadium-titanium magnetite to iron ore pellet @article{Kou2024ExperimentalSO, title={Experimental study on parameters optimisation of adding vanadium-titanium magnetite to iron ore pellet}, author={Ming-yin Kou and Pengfei Ji …
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Unbeneficiated magnetitic iron ore was used in this study; the relatively high phosphorus content facilitates the detection via scanning electron microscope with energy-dispersive X-Ray spectroscopy (SEM-EDS). Table 1 shows the chemical composition of the raw and oxidized samples. A lump sample with grain sizes between 10 and 16 mm was reduced ...
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If the phosphorus is present in the iron ore as discrete phosphorus-containing minerals then flotation presents a viable option for reducing the phosphorus content. For example, the LKAB concentrator in Kiruna, Sweden, treats by flotation a high phosphorus magnetite ore which typically contains about 1% P.
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Many researchers used traditional processes, such as grinding-magnetic and griding-flotation, to treat high-phosphorus iron ore. Liu et al. (2010) used single reverse flotation to treat high-phosphorus oolitic hematite. The Fe grade increased from 48.97% to 54.21% while the P content decreased from 0.92% to 0.28%.
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In this paper, an innovative method is proposed to upgrade iron and remove phosphorus from high-phosphorus oolitic hematite ore by the sodium magnetization …
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Using the process of suspension magnetization roasting followed by magnetic separation and flotation to treat high-phosphorus iron ore, Zhang et al. [26] found that the Fe grade increased from 42.93 % to 59.50 % and the P content decreased from 0.58 % to 0.32 %, and near half of the phosphorus remained in the residual apatite after iron selection.
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To solve these problems, a novel method was proposed in this work for enhancing iron extraction and dephosphorization from high phosphorus limonite by suspension …
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The cleaning and efficient disposal of eggshell waste presents many challenges. Reduction roasting of high-phosphorus oolitic iron ore (HPOIO) requires the addition of expensive alkali metal compounds to enhance dephosphorization.
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ley high phosphorus iron ore used in this investigation. The chemical composition was determined by ICP-AES method, and the sulphur and carbon contents were analyzed ... Magnetite can also be reduced directly to metallic iron since wüstite is …
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2.1.1. Medium Phosphorous Magnetite Ore The medium phosphorus magnetite ore (hereafter referred as raw ore) used in this work was provided by the Bayan Obo iron ore in Baotou, China. The main chemical com-position is listed in Table 1. The total iron grade is as low as 31.70 mass% and phosphorus content is as high as 0.91 mass%.
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Fortescue Metals Group (FMG) has commenced production of high-quality magnetite iron ore from the Iron Bridge mine with an annual capacity of 22 million tonnes. This development presents an excellent opportunity to address the potential scarcity of DR-grade iron ore needed to support the steel sector technology transition.. Direct reduced iron (DRI) based …
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Phosphorus is a major contaminant in steelmaking and current specifications for iron ore, the feedstock used in steelmaking, requires ores averaging less than 0.08% P (bulk). In Australia, the majority of iron ore feedstock production is a blend of low-P (<0.05% P) hematite-rich ores and more common high-P (>0.10% P) goethite-rich ores.
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2. PHOSPHATE OCCURRENCES Iron ore of high phosphorus content coexists with other minerals in the form of apatite or fluorapatite. Phosphorus is spread on the edge of mineral panicles of iron oxide and
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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)....
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The results showed that it is very suitable for smelting ilmenite, and iron recovery rate reached 95% with titanium content lower than 0.05% (under the conditions of 30 min holding time at …
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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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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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In general, phosphorus is considered as a gangue mineral in iron ore because it makes steel brittle. High levels of phosphorus in iron ore attract a penalty and reduces the profit margin substantially[42]. ... For example, the magnetite ore at LKAB (Luossavaara-Kiirunavaara AB) in Kiruna, Sweden, contains about 1 wt% phosphorus, which is ...
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.Hematite and magnetite are the two main iron ore minerals in Australia, with hematite being Australia's main iron ore export. Hematite ore is typically higher-grade than magnetite ore, with approximately 60% contained iron whereas magnetite ore has grades in the order of 30% contained iron. However, magnetite can be converted to a higher-grade
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Bayan Obo iron ore was used as the raw ore in this work, and its chemical and phase composition are presented in Table 1 and Fig. 1, respectively. The total iron content of raw ore is 31.70 wt% and this iron mainly exists as magne-tite; the phosphorus content reaches 0.91 wt% and mainly exists as apatite.
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Reserves of high-grade iron ore, that can be used directly in the iron and steel industry, are limited and are getting depleted very fast. ... and therefore low-intensity magnetic separators are widely used to upgrade magnetite ores. Phosphorus is an important impurity and almost all of the phosphorus in iron ore transferred directly into cast ...
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High-phosphorus oolitic hematite is a potential iron ore resource. China and Europe have 4–5 billion tons and more than 14 billion tons of iron reserves, respectively.1–4) Corresponding resources have also been reported in the United States and Egypt.5) On account of the high content of phosphorus in the iron ore, which adversely affects the quality of pig iron …
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Developing the innovative technology for efficient utilization of high-phosphate iron ore was the inevitable choice of resource strategy. In this paper, exploring a new method of gasification ...
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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 ... phosphorus and sulfur, which can affect ... plants may be optimised to use one over the other. Magnetite has a slightly higher Fe content as a mineral (72.36% vs 69.94% for hematite), and its ...
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In this work, an innovation which includes processes of grinding, suspension magnetization roasting, and flotation was proposed for efficient utilizing the High-phosphorus …
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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 phosphorus content in iron ores used in steel making is < 0.1%. Numerous beneficiation studies are mentioned in the literature; however, there is no commercial scale technology established …
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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 …
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