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 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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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 …
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Almost four billion tons of poor-quality iron ore having an Fe content of 35–40% and significant phosphorous con-tent (0.4–1.8% P) oolitic hematite ore are present in China [6, 7].
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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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Zhang et al. (2008) used microwave heating prior to beneficiation of an oolitic iron ore from Yichang, China. The ore was ground to <74 µm to achieve liberation of the hematite from the gangue. Reductants used included waste iron powder, coke and charcoal and the reduced product was tested using either magnetic separation or reverse flotation.
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Beneficiation of iron ore by flotation – review of industrial and potential applications. International International Journal of Mineral Processing 10, 183 – 204.
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In China, high-phosphorus iron ore is known as "Ningxiang-type iron ore", which is widely distributed in Hubei, Hunan, Jiangxi, Guizhou, Yunnan, Sichuan, Chongqing, and Gansu. For nearly a century, high-phosphorus iron ore has remained undeveloped globally. ... 1.Beneficiation dephosphorization: This method requires fine grinding of the ore ...
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A high phosphorus oolitic iron ore sample was obtained from Hubei province, China. It contained 43.58% Fe, 17.1% SiO 2, 9.28% Al 2 O 3, 3.58% CaO, 0.83% P and 0.048% S. Iron mainly occurred in the form of hematite, and phosphorus occurred in …
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In this paper, the distribution and flotation processes of typical phosphate ores in China are introduced. Considering the current situation in phosphate ore beneficiation both …
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Iron is one of the most common elements in Earth's crust. The primary industrial types of iron-bearing minerals include oxides and hydroxides and, to a lesser extent, carbonates: magnetite [Fe 3 O 4], hematite [Fe 2 O 3], goethite [FeO(OH)], limonite [FeO(OH) × nH 2 O] and siderite [FeCO 3].The genesis of iron ore deposits is variable, similar to numerous other ore …
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China possesses over 84.8 billion tons of iron ore resources, and approximately 97.5 % of them belongs to the low-grade ores [1]. Among these low-grade ores, the proven reserves of high-phosphorus oolitic hematite are 3.72 billion tons [2].
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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 …
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2.1 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 particles of iron oxide and embedded in quartz or carbonate minerals and a small amount is present in the iron mineral grid (Xia et al., 2011).
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In China, high-phosphorus iron ore, also known as "China Ningxiang type iron ore", is widely distributed in Hubei, Hunan and other regions. It has been found that this kind of iron ore reserves are around 3.805 billion tons, and the Guandian iron ore reserves in Jianshi County, Enshi Prefecture, Hubei Province alone have exceeded 420 million tons.
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The main occurrence minerals of iron in the high-phosphorus oolitic hematite were tested. The result was presented in Table 2. The hematite constituted approximately 96.21 % of the total iron content in the high-phosphorus oolitic hematite. A minor proportion of iron was found in oolitic chlorite, accounting for 3.53 % of the total iron content.
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China needs to enhance the supply of iron ore resources, and the utilization of low-grade and complex symbiotic mineral resources is an unavoidable task. The global …
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Universal food and energy crop production is strongly integrated with phosphorite availability as P is a limiting factor in harvesting [16], [17], [18].The exploitation of phosphorous as fertilizer has been reported since 200 BCE when birds, fishes, and other dead organisms were used as phosphorus resources in land cultivation [19], [20], [21]. ...
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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 iron recovery under these conditions was 88.5%. Xu et al. (2012) used lignite as a reductant and various dephosphorisation reagents containing sodium salts to reduce the phosphorus level of a high phosphorus (0.83%) iron ore from the Western Hubei Province of China. The raw ore contained 43.65% Fe primarily as hematite.
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Oolitic hematite is an iron ore resource with complex refractory characteristics, abundant reserves, and significant recycling value. In this study, a clean and innovative microwave fluidization roasting method was developed. Iron concentrate with an iron grade of 58.72% and iron recovery of 89.32% was obtained via microwave pretreatment at 1050 °C for …
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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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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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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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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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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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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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Oolitic Hematite mines, iron ore with poor beneficiation efficiency are widely distributed in China with the most abundant deposits. In this paper, comprehensive technology integrating …
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