— A process is proposed for the dephosphorization of iron ore. The process consists of an integrated treatment for the removal of the phosphorus from the ore by leaching and further processing of ...
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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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— 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 …
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— Traditional dephosphorization methods such as beneficiation, 14,15) chemical treating, 16, 17) gas-based reduction, 18,19) direct reduction 20) and microbial leaching, 21) due to their high energy ...
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Dephosphorimtion by physical beneficiation methods can only be possible when the phosphorus is associated with the apatite, silica or alumina gangue phases Chemical …
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Automated optical image analysis of natural and sintered iron ore. E. Donskoi, ... J.R. Manuel, in Iron Ore, 2015 Abstract. To evaluate an iron ore resource, develop processing routines for iron ore beneficiation, and understand the behavior of the ore during such processing, extensive mineralogical characterizations are required.For calculating …
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— Process mineralogy of low-grade laterite nickel ore in Indonesia was systematically characterized and the beneficiation process of mineral components such as limonite, serpentine and chromite was ...
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— The most important iron ore deposits of Iran, namely Chogart, Gol-e-Gohar, Chador Malu, are located in central Iran. The main iron bearing mineral phases of these deposits were known as magnetite ...
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— Bioleaching for phosphorus removal from iron ores. Dephosphorization of iron ore can be achieved through bioleaching. Different methods are needed to remove phosphorus from iron ore depending on whether it is present as a mineral (apatite) or associated with iron minerals (Edwards et al., 2011). Although most phosphorus occurs …
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— The reserves of brown iron ore are known to rank third in the world and they are common in North America, Australia, China, Kazakhstan, and other countries. Ores of most brown iron deposits are readily and inexpensively mineable and require low power for crushing and beneficiation. However, the mechanical methods of their beneficiation do …
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— Semantic Scholar extracted view of "Dephosphorisation of western australian iron ore by hydrometallurgical process" by C. Cheng et al. ... the rate of biodephosphorization and the degree of beneficiation increases. ... Effect of process variables on the oxidative dephosphorization of high -phosphorus Agbaja iron ore were …
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— A process has been proposed for the treatment of apatite concentrate obtained from the dephosphorization of iron ore. In this process, the apatite is acidulated by HNO3 to produce high-purity H3PO4.
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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. In this paper, the mechanism of high …
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A process has been proposed for the treatment of apatite concentrate obtained from the dephosphorization of iron ore. In this process, the apatite is acidulated by HNO3 to produce high-purity H3PO4. … Expand
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DOI: 10.1016/J.POWTEC.2016.07.044 Corpus ID: 99355596; Beneficiation studies of a difficult to treat iron ore using conventional and microwave roasting @article{Rath2016BeneficiationSO, title={Beneficiation studies of a difficult to treat iron ore using conventional and microwave roasting}, author={Swagat S. Rath and Nikhil …
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— In this paper, an effective method was developed to remove phosphorus and upgrade iron from high phosphorus oolitic hematite ore by high temperature flash reduction—a wet magnetic separation process. A …
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— The effect of CaCO 3, Na 2 CO 3, and CaF 2 on the reduction roasting and magnetic separation of high-phosphorus iron ore containing phosphorus in the form of Fe 3 PO 7 and apatite was investigated. The results revealed that Na 2 CO 3 had the most significant effect on iron recovery and dephosphorization, followed by CaCO 3, the effect …
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— To investigate the effect of simultaneous change in particle size of raw materials (including ore, reductant, and dephosphorization agent) on the direct reduction process of high-phosphorus ...
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XII ENTMME / VII MSHMT – Ouro Preto-MG, noviembre 2007. DEPHOSPHORIZATION OF AN IRON ORE BY A FILAMENTOUS FUNGUS. Pedro Delvasto 1,2, Antonio Ballester 1, Jesús Angel Muñoz 1, María Luisa ...
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— The feasibility of dephosphorization using the flotation process and its mechanism of high-phosphorus oolitic hematite were discussed in this paper. The results showed that phosphorus minerals …
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dephosphorization in iron ore processing plants is not always justified, neither from the economical nor the environmental standpoint. This fact has made researchers to turn their
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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 …
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iron ore, CO is mainly provided through the chemical reac-tion expressed by Eq. (7), and chemical reaction includes the reduction of iron minerals and the conversion of phosphate minerals. The reduction process of iron minerals is clear, and the critical part in the utilization of high-phosphorus iron ore lies in dephosphorization.
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— [8] [9][10] Microbial leaching could obtain a better dephosphorization effect, but microbial self-cultivation and dephosphorization would take a long time, and the sulfur content in the ore would ...
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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 …
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— To provide a new method for the dephosphorization of high-phosphorus oolitic iron ore (HPOIO) by reduction roasting, the feasibility of the high-efficiency separation of iron and phosphorus by reduction roasting and magnetic separation process (RRMSP) without a dephosphorization agent was studied. The results showed that the full …
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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 …
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The maximum degrees of biodephosphorization and beneficiation were 79.34% and 71.84% respectively, in 40 days using 108 microbial populations. The results obtained show that …
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— The results of investigation of sintering and magnetic beneficiation of brown iron ore concentrate are presented. The investigations are based on using a possibility of redistribution of phosphorus from the ore constituents into slag-forming ones in the process of sinter roasting.
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— To provide a new method for the dephosphorization of high-phosphorus oolitic iron ore (HPOIO) by reduction roasting, the feasibility of the high-efficiency …
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