This paper investigates the effect of microwave radiation on Egyptian high phosphorus iron ore. Three different iron ore samples have varying Fe O and P O contents and mineralogical textures were studied. A comparative study has been carried out between untreated and microwave treated iron ore. XRD and FTIR analyses showed …
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In high-phosphorus iron ore deposits, the phosphorus is present either as discrete phosphate minerals (e.g., apatite) or as a phosphate phase in iron oxide and oxyhydroxide minerals in the ore. High impurity levels of silicon, aluminum, and sulfur in the ores are usually due to the presence of mineral impurities (e.g., quartz, kaolinite ...
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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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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 realize the efficient utilization of high-phosphorus iron ore resources is of theoretical and practical significance. Thus, a method for phosphorus removal by gasification in the hydrogen-rich ...
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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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With the development of China's iron and steel industry, the demand for iron ore is increasing, and the contradiction of iron ore shortage is prominent. 1,2) China is rich in high-phosphorus iron ore reserves, but due to its high phosphorus content, complex mineral phase structure and small mineral size, it is difficult to use efficiently. 3,4,5) In …
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The fatty acid flotation of a difficult-to-float igneous phosphate ore (26.2% P 2 O 5, 15.4% Fe 2 O 3) was investigated through batch flotation tests in the presence of soda ash.The poor flotation of this otherwise high quality ore was attributed to very high concentrations of calcium and sulfate ions (about 1000 and 2000 mg/L, respectively) …
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1. Introduction. Economic growth has entailed the extensive consumption of high-quality iron resources [1].In this context, the utilization of refractory iron ore has …
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This study investigated the direct reduction process and phosphorus migration features of high-phosphorus iron ores using simulated experiments. Results show that iron oxide was successfully reduced, and a Fe-Si-Al slag formed in carbon-bearing pellets at 1473 K (1200 °C). Fluorapatite then began to decompose into Ca3(PO4)2 and CaF2. As the reaction …
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The iron ore deposits have exhibited an increasingly complex mineralogical composition nowadays with the rapid consumption of iron ore resource around the world [1,2,3].Statistically, the identified premium grade iron ore with phosphorus content lower than 0.05 wt% will be depleted within 30 years at the current rate of mining [4, 5].Thus, …
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Rock phosphate. Rock phosphate is a naturally occurring ore of marine sedimentary origin. It may have a composition of 0-30-0, but the grade is noted as 0-3-0, since rock phosphate is sparingly soluble and little of the phosphorus is available to crops. Many of the mines that produced rock phosphate are closed, and most of the marketed rock ...
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The Present Status and Trends of Dephosphorising of High Phos- phorus Iron Ore [J]. Multipurpose Utilization of Mineral Re- sources, 1998(6) : 20 (in Chinese). Peixoto G. Improvement of the Reduction Process in P Content and Other Gangues in Iron Ore and Its Agglomerates: WO, [3] W019930lQZ71 A2 [PI. .
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After bioleaching, the high-phosphorus iron ore was suitable to be used in the manufacture of iron and steel. The optimal ore solid concentration for bioleaching of phosphorus was 250 g/L under ...
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The technology of direct reduction by adding sodium carbonate (Na2CO3) and magnetic separation was developed to treat Western Australian high phosphorus iron ore. The iron ore and reduced product were investigated by optical microscopy and scanning electron microscopy. It is found that phosphorus exists within limonite in 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 …
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Indian low grade iron ores mostly contain quartz, gibbsite, and clay as the major impurities.Depending upon the ore characteristics, in many instances froth flotation has to be used to recover the hematite and other iron oxides from the ground ores. In this context, the difference in silica and alumina content in low grade iron ores is brought to …
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The iron ore deposits have exhibited an increasingly complex mineralogical composition nowadays with the rapid consumption of iron ore resource around the world …
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Delvasto et al. (2005) found fungal-dominated cultures were more effective at dephosphorization of a high-phosphate iron ore than predominantly soil bacterial cultures, while Parks et al. (1990) found that phosphate solubilization from an iron ore could be increased from 20% (fungus metabolites alone) to 50% when HCL (a traditional leaching ...
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Table 2. Iron phase composition of high-phosphorus oolitic hematite (%). Mineralogy research indicates that oolitic hematite ore belongs to a high-phosphoric-acid orebody. The primary valuable minerals are hematite and limonite, accompanied by small amounts of magnetite and siderite.
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Iron ores with phosphorus content lower than 0.07% P are commercially desired as they are suitable for use in iron production. As a consequence, a lot of research efforts have been focused on phosphorus removal from high-phosphorus iron ore [20, 24, 32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48] in a bid to reduce the P content …
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1. Introduction. It is estimated that there are around 10.3 billion tonnes of under-developed medium level phosphorus-containing iron ore (0.07–0.10 wt% P) and 8.0 billion tonnes of high level phosphorus ore (>0.10 wt% P) in Western Australia (Fisher-White et al., 2012).The bulk of production is typically a blend of low phosphorus martite …
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Thereby the huge reserves of high-phosphate iron ore have not been used on a large scale by now.6–8) The development and utilization of high-phosphorus iron ore is the inevitable choice of resource strategy. The researchers have carried out a lot of theoretical and Gasification Behavior of Phosphorus during Hydrogen-rich
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The iron ore with high phosphorus content is a common complex symbiotic iron ore species, and it is widely distributed in the United States, France, Russia, Australia and China [[1], [2], [3]]. Most of this type of ore presents an oolitic microstructure [ 1 ].
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on the new process of separation of iron and phosphorus from high-phosphorous iron ore based on a RHF and obtained low-P nuggets, which could be directly used as raw material for steel-making [26–28]. Therefore, numerous researchers now agree that the phosphorus of high-phosphorus iron ore can be
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The fatty acid flotation of a difficult-to-float igneous phosphate ore (26.2% P2O5, 15.4% Fe2O3) was investigated through batch flotation tests in the presence of soda ash.
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1. Introduction. Economic growth has entailed the extensive consumption of high-quality iron resources [1].In this context, the utilization of refractory iron ore has generated significant research interest [2].Among the reserves of refractory iron ores, high‑phosphorus oolitic iron ore (HPOIO) have reached 20 billion tons; however, the …
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Phosphorus reduction behavior of high-phosphate iron ore during hydrogen-rich sintering. Yanbiao Chen; Wenguo Liu; Haibin Zuo; OriginalPaper 22 August 2022 Pages: 1862 - 1872 Fluidization behavior and reduction kinetics of pre-oxidized magnetite-based iron ore in a hydrogen-induced fluidized bed. Heng Zheng; Oday Daghagheleh ...
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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 design and timely development of environmentally-benign processes for the simultaneous beneficiation of high-phosphorus …
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1. Introduction. 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 …
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The efficient utilization of high-phosphate iron ore has be-come one of the main topics for researchers, and a large num-ber of experiments have been conducted. At present, the main methods used to treat high-phosphate iron ore include benefi-ciation, reduction melting, chemical, and bioleaching meth-ods.
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