##tihuan2##In order to reasonably utilize the abundant resources of high-phosphorus iron ore and ilmenite in China, the technology of top-blown smelting reduction with oxygen enrichment was used to smelt the mixed ore of high-phosphorus iron and ilmenite. The effect, which is related to basicity, reduction temperature, carbon-oxygen ratio and time …
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##tihuan2##Iron ore pellets are made from both magnetite and hematite ores. Hematite ores are concentrated using a flotation process. Pellets include a mineral binder that represents about 2% by weight.
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##tihuan2##In this study, we presented simultaneous enrichment of iron (Fe) and phosphorus (P) to recover P from high-phosphorus iron ore and clarified the migration …
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##tihuan2##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 magnetic separation. Under the conditions, reductive temperature of 1150°C, duration time of 60 min, mass ratio of briquettes to pea coal of 1:1, the ...
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##tihuan2##Iron Ore in Karnataka. Iron ores are widely distributed. High grade ore deposits are those of Kemmangundi in Bababudan hills of Chikmagalur district and Sandur and Hospet in Bellary [Lot of Mining Mafia]. Most of the ores are high grade haematite and magnetite. Iron Ore in other states. Andhra Pradesh (1.02%): Kurnool, Guntur, …
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##tihuan2##Deep dephosphorization of high‑phosphorus oolitic iron ore (HPOIO) is extremely difficult because of its refractory characteristics. A new approach for …
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##tihuan2##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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##tihuan2##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 …
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##tihuan2##Separated preparation of prealloys and amorphous alloys results in severe solidification–remelting and beneficial element removal–readdition contradictions, which markedly increase energy consumption and emissions. This study offered a novel strategy for the direct production of FePC amorphous soft magnetic alloys via smelting reduction …
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##tihuan2##Depletion of the mineral ore base of high-grade quality and easily beneficiated iron ores has led to the need for improvement in the processing of low-grade and complex composition magnetite–hematite …
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##tihuan2##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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##tihuan2##High levels of phosphorus in iron ore attract a penalty because this makes steel brittle. In magnetite, phosphorus is often found in the form of discrete phosphate minerals, such as apatite, which can be removed by flotation. In hematite and goethite ores, however, the phosphorus tends to be incorporated into the lattice of the iron minerals ...
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##tihuan2##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. With calcium carbonate (CaCO3), calcium chloride (CaCl2), or calcium sulfate (CaSO4) as additive, the process of direct reduction and phosphorus removal of high …
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##tihuan2##The gasification removal behaviour of phosphorus from high-phosphorus iron ore is theoretically and experimentally studied in the temperature range of 400–900 °C under H 2 reducing and N 2 atmospheres. In the first step, thermodynamic analysis is conducted to reveal the gasification and reaction behaviours of common phosphorus …
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##tihuan2##Many researchers used traditional processes, such as grinding-magnetic and griding-flotation, to treat high-phosphorus iron ore. Liu et al. (2010) used single …
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##tihuan2##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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##tihuan2##This new process is an effective technique to enrich iron and remove phosphorus from high-phosphorus oolitic iron ore. Figure 13 presents the SEM-EDS results of iron concentrate. It can be seen that the purity of magnetite in the iron concentrate was relatively high, and there were only two elements of Fe and O at point …
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##tihuan2##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 …
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##tihuan2##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 …
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##tihuan2##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 …
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##tihuan2##With the depletion of high-quality iron ore resources, high-phosphorus oolitic hematite (HPOH) has attracted great attention due to its large reserve and …
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##tihuan2##In China, most reserves of rich iron ores have now been depleted and sustainable development of low-grade iron ores has become a critical discussion topic in the mining industry today. The aim of this study was to evaluate the applicability of beneficiating a low-grade, hematite-magnetite ore (assaying 18.64% Fe) for …
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##tihuan2##Muhammed and Zang (1989) have used nitric acid (6M) leaching for 24 hours of a magnetite iron ore containing 1 – 3 % P presented as apatite and have claimed a drop in phosphorus level below 0.05 %. The same authors have ... An efficient removal of phosphorus down to 0.05 % from high P iron ores is reported by
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##tihuan2##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 …
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##tihuan2##Lower-grade sources of iron ore generally require beneficiation, using techniques like crushing, milling, gravity or heavy media separation, screening, and silica froth flotation to improve the concentration of the ore and remove impurities. The results, high-quality fine ore powders, are known as fines. Magnetite. Magnetite is magnetic, and hence easily …
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##tihuan2##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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##tihuan2##1. Introduction. 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., …
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##tihuan2##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 ...
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##tihuan2##Iron Ore Formation. Iron formation consists of iron ore such as siderite, magnetite, and hematite, with silica in the form of chert, jasper, etc., generally in bands, but sometimes not distinctly so. The bands of iron ore are at times high-grade, but are often mixed with a good deal of silica, the whole making an ore too lean for use without ...
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