High phosphorous oolitic hematite ore is one of typical intractable iron ores in China, and the conventional beneficiation methods are found to be impracticable to remove phosphorus from the ore ...
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In many parts of the world, the grade of the mined stone is low. There are many and complex gangue components in low-grade iron ore, and the grain size of the gangue mineral phase is fine, which is closely embedded with the fine iron ore phase (Zhi, 2022).At the same time, due to the limitation of processing technology, most of the low-grade ores have not been …
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The iron and steel industry is a key pillar of both the Chinese and global economies. Steel production relies heavily on iron ore, yet China, a leading steel producer, faces challenges with its domestic iron ore due to low grade, fine particle size, and high impurities [1], [2].This results in low resource utilization and a heavy reliance on imports.
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The roasting -leaching technology for iron extraction and phosphorus reduction was proposed with a view to achieving efficient utilization of high-phosphorus iron ore. This paper investigated a high-phosphorus certain iron ore with a TFe grade 60.81%, FeO content14.92%, and P content 0.71% extracted from Algeria.
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This review focuses on main aspects of high-phosphorus iron ores processing: beneficiation by physical beneficiation techniques (gravity separation, magnetic separation, reverse flotation, and combined physical beneficiation processes), hydrometallurgy processes (acid/alkaline …
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High-phosphorus iron ore is a typical refractory iron ore, and is mainly distributed in the United States, France, Britain, Canada, Algeria, Nigeria, Kazakhstan, and China, with a total reserve of more than 2 × 1010 t [6–8]. Owing to the complex structure and high phosphorus content of …
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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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The conventional beneficiation process of iron ore is found to be less effective in phosphorus removal of high phosphorus oolitic hematite, which is one of the most refractory ores in China. One ninth of China's iron ore resources are oolitic hematite, in which 30−40 billion tons are high phosphorus oolitic hematite. Therefore, the
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With the present rates of iron ore consumption, currently unusable, high-phosphorus iron ore deposits are likely to be the iron ores of the future as higher-grade iron ore reserves are depleted. Consequently, the …
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In this study, direct reduction-magnetic separation process was applied to enrich phosphorus and iron to prepare Fe-P crude alloy from a high phosphorus oolitic hematite ore (HPOH). The results show that at lower temperatures and with absence of any of additives, Fe cannot be effectively recovered because of the oolitic structure is not destroyed. In contrast, …
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In order to provide the data basis for the optimization of the phosphorite and iron ore beneficiation process in Baiquan, a series of ore-dressing studies were conducted on the phosphorus …
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High phosphorous oolitic hematite ore is one of typical intractable iron ores in China, and the conventional beneficiation methods are found to be impracticable to remove phosphorus from the ore ...
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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).
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High phosphorous oolitic hematite ore is one of typical intractable iron ores in China, and the conventional beneficiation methods are found to be impracticable to remove phosphorus from the ore ...
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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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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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The phosphate ore reserves in China rank the second in the world, but the high-grade phosphate ore is deficient, which cannot meet the need of agriculture and other industries. The development a nd
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High phosphorous oolitic hematite ore is one of typical intractable iron ores in China, and the conventional beneficiation methods are found to be impracticable to remove phosphorus from the ore effectively. ... Seattle, WA, USA, 2010: 505âˆ'513. [14] TANG H, GUO Z, ZHAO Z. Phosphorus removal of high phosphorus iron ore by gas-based ...
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tance to find a method to treat high-phosphorus iron ore because of its huge reserves. High-phosphorus siderite ore was a typical type of intractable iron ore in China. In general, siderite ore ...
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The vast majority of manganese ores in China belong to lean ores, which must be beneficiated. However, most manganese ores are fine-grained, and there are a considerable number of high phosphorus ores, high iron ores, and CO (associated) beneficial metals, which brings great difficulty to beneficiation and processing.
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Iron ores can be classified with respect to their phosphorus content as low-phosphorus ore (< 0.07% P), medium-phosphorus ore (0.07–0.10% P), or high-phosphorus …
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Phosphorus-bearing refractory iron ore is a typical refractory iron resource with low Fe content, weakly magnetic, and high phosphorus content [8], [9].When traditional beneficiation methods, such as gravity separation, magnetic separation, and flotation, are employed to extract iron from gangue, the Fe recovery and Fe grade of concentrate are very low [10], [11], [12].
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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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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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The novel method has accomplished efficient processing of oolitic hematite and a reasonable control of production costs during processing, which is significant for expanding the …
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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 (HPOIO). However, its precise impact on iron recovery and the dephosphorization of iron minerals with phosphorus within HPOIO, particularly the mineral …
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China's significant reliance on imported iron ore is due to its poor resource endowment and low utilisation levels. Given the urgent demand for iron ore resources, it is crucial to conduct basic research and cutting-edge …
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Phosphate ore is an important raw material for manufacturing fertilizers and phosphorous chemical products. While most of the phosphate resources cannot be directly treated as feed stock due to the low grade of P2O5 and high content of impurities. In order to obtain a qualified phosphate concentrate, the beneficiation of the low-grade phosphate ore is, …
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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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A new iron recovery and dephosphorization approach from unroasted high-phosphorus oolitic hematite ore via a facile chemical beneficiation process ... The distinctive oolitic structure within the ore is regarded as the primary factor causing the difficulty in the beneficiation of oolitic hematite ore. The objective of this study is to devise an ...
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In this study, a high-phosphorus oolitic iron ore containing 44.70% Fe and 1.56% P from western Hubei of China was collected as the sample. The chemical composition, mineral composition, structure characteristics, dissemination characteristics, and iron and phosphorus occurrence state were carried out to investigate the mineralogical characteristics of the high …
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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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The high-phosphorus iron ore used in this work was obtained from Daye region of Hubei province of China. ... Up to now, no economic and feasible physical beneficiation method is available in China for selective removal of phosphorus from such kind of high-phosphorus iron ore [2]. Download: ...
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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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The available reserves of high-phosphorus oolitic iron ore located in Western Hubei, China, exceed 2 billion tons. This is a chemical sedimentary iron ore, mainly composed of oolite (more than 60%) [8,9].Specifically, the ore comprises nuclear oolite (quartz or iron material), a collophane girdle, hematite, and a limonite girdle; the gangue is composed of fine-grained …
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The iron ore reserves of 3.72 billion tons, account for approximately 73.5% of the sedimentary iron ore in China (Lu et al., 1994). The high phosphorus oolitic hematite has the characteristics of low-grade iron content and high-level harmful impurities, such as phosphorus and aluminium (Wei, 2010), which limit the development of this oolitic ...
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