Phosphorus Iron Ore China
- صفحه اصلی
- Phosphorus Iron Ore China
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 …
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An innovative process of coal-based reduction followed by magnetic separation and dephosphorization was developed to simultaneously recover iron and phosphorus from one typical high-phosphorus refractory iron ore. The experimental results showed that the iron minerals in iron ore were reduced to metallic iron during …
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The efficient and harmless utilization of converter sludge (CS) still faces problems. 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 increase in production costs.
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With the development of China's iron and steel industry, the demand for iron ore is increasing, and the contradic-tion 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
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China is rich in high-phosphate iron ore re-sources; however, it has not been fully utilized because of its low grade, high-phosphorus content, complex mineral struc-ture, fine grain size, and close symbiotic relationship between minerals [4–5]. The efficient utilization of high-phosphate iron ore has be-
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HIsmelt is an energy-saving and emission-reducing technology as compared to the blast furnaces (BF). This paper analyzed the preponderances of smelting high-phosphorus iron ore and ilmenite by HIsmelt technology, which is reserved vastly in China. The results showed that it is very suitable for smelting ilmenite, and iron recovery rate reached 95% …
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High-phosphorus (P) iron ore, particularly oolitic hematite, has remained unexploited due to technological and cost limitations in mining. ... North Africa, Saudi Arabia, and the Yangtze River region in China. [10,11,12] It contains high concentrations of 0.5 to 2.5 wt pct phosphorus that exist mainly in the form of apatite, ...
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national discharge standard of water pollutants for iron and steel industry (GB 13456-2012) (TCu(II) = 0.5 mg/L) in China. Therefore, it can be concluded that LGPIO is a promising low-cost adsorbent which is suitable for the removal of Cu (II) ion from wastewater. Keywords Low grade phosphorus-containing iron ore (LGPIO) Cu(II) ion
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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 ...
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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 …
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Under the conditions, reductive temperature of 1150°C, duration time of 60 min, mass ratio of briquettes to pea coal of 1:1, the reduced iron powder with an iron grade of 93.21% and phosphorus content of 0.13% was obtained, of which the corresponding iron recovery is 82.68% and dephosphorization ratio is 89.87%.
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Fortescue's future is firmly Pilbara iron ore. It will spend $US4 billion ($5.9 billion) this year developing hubs and mines, exploration and trying to decarbonise its …
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Phosphate ore is an important and indispensable strategic resource that is widely used in cutting-edge technologies, chemical and metallurgical industries (especially the P chemical industry), national food production security, and other fields [1, 2].After decades of development, China has developed globally dominant phosphate ore, …
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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 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 mainly exist in the form of collophane, which can be divided into three types. Block collophane and band collophane could be effectively …
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In this study, we presented simultaneous enrichment of iron (Fe) and phosphorus (P) to recover P from high-phosphorus iron ore and clarified 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 …
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Despite the abundant reserves of iron ore resources in China, the overall iron ore is ... However, due to its high phosphorus content, fine size of iron ore, and complex mineral composition, it is ...
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The average contents of P and Fe in the iron ore were 1.06 and 47.90% (w/w), respectively. The particle sizes of the ores used ranged from 58 to 3350 μm. It was found that the indigenous sulfur-oxidizing bacteria from municipal wastewater could grow well in the slurries of solid high-phosphorus iron ore and municipal wastewater.
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phosphorus iron ore. 2 Materials and methods 2.1 Materials The high-phosphorus iron ore came from a mine in Africa, and was referred to as raw ore. The iron grade and phosphorous content were 55.58% and 0.57%, respectively, and the main iron minerals were hematite and magnetite. 48.61% of phosphorus existed in apatite, while 47.22% …
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In the present study, roasting-induced phase change and its influence on phosphorus removal via leaching has been investigated for high-phosphorus iron ore. The findings indicate that phosphorus in the ore is associated with goethite and exists mainly in amorphous Fe3PO7 phase. The phosphorus remains in the amorphous …
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Introduction. Tens of billions of tons of high-phosphorus iron ore reserves have been detected globally. However, because of the low iron grade, the high phosphorus & silicon content, and the complex existence and symbiotic forms of phosphorus, it is difficult for the existing ore dressing technology to fully separate …
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Gaseous reduction kinetics of the high phosphorus iron ore fines from Hubei in China and effect of microwave pretreatment on the gaseous reduction behavior were studied. Gaseous reduction kinetics were investigated by TG (Thermogravimetric) methods using LINSEIS STA PT 1600 thermal analysis equipment. Microwave …
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For medium phosphorus magnetite ore, effects of carbon mixing ratio, reduction temperature and basicity on phosphorous gasification and iron metallization during carbothermic reduction were ...
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The effects of ore particle size on selectively bioleaching phosphorus (P) from high-phosphorus iron ore were studied. The average contents of P and Fe in the iron ore were 1.06 and 47.90% (w/w), respectively. ... Beijing, China. [email protected]; PMID: 23530328 DOI: 10.1080/09593330.2012.689363 Abstract The effects of ore …
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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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Gaseous reduction kinetics of the high phosphorus iron ore fines from Hubei in China and effect of microwave pretreatment on the gaseous reduction behavior …
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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 …
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High-phosphorus iron ore has been paid extensive attention because of the difficulty of effective separating iron and phosphorus. There exists an abundance of high-phosphorus iron ore resources in China, up to 7.45 billion tons distributed primarily in Hubei, Jiangsu, Yunnan, and Anhui provinces [1,2,3].Currently, owing to the high …
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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-temperature pretreatment for enhancing the effect of iron enrichment and dephosphorization in the magnetization roasting-leaching …
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