Increasing Iron and Reducing Phosphorus Grades
High-phosphorus oolitic iron ore, treated by suspended flash magnetic roasting, contained 42.73% iron (mainly present as 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 China-Africa Business Council
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Effect of ore solid concentration on the bioleaching of phosphorus
In China, such high-phosphorus iron ores account for about 20% of total resource of iron ores. Dephosphorization of high-phosphorus iron ore has been studied Abstract. High phosphorous oolitic hematite ore is one of typical intractable iron ores in China, and the conventional beneficiation methods are found to be Mechanism of phosphorus removal in beneficiation of high phosphorous
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The Chinese Iron Ore Deposits and Ore
Fine grain iron ore beneficiation. In China, iron ore with hematite grain size of less than 0.045 mm or magnetite grain size of less than 0.03 mm is Sun YS, Gao P. Phosphorus migration behaviors in Oolitic Hematite mines, iron ore with poor beneficiation efficiency are widely distributed in China with the most abundant deposits. In this paper, comprehensive technology Development of Technologies for High Phosphorus Oolitic
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高磷鲕状铁矿直接还原−磁选提铁降磷扩大试验研究 USTB
Citation: WU Shi-chao, SUN Ti-chang, KOU Jue, LI Xiao-hui. Pilot study of high-phosphorus oolitic iron ore for iron recovery and dephosphorization by direct China is rich in high-phosphate iron ore resources; however, it has not been fully utilized because of its low grade, high-phosphorus content, complex mineral Development of Technologies for High Phosphorus Oolitic
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Dephosphorization mechanism in a roasting process for
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 Rao (2023): Preparation of Reduced Iron Po wder from High-Phosphorus Iron Ore: A Pilot- Scale Rotary-Kiln Investigation, Mineral Processing and Extractive Metallurgy Re view, DOI: 10.1080/08827508(PDF) Preparation of Reduced Iron Powder from High Phosphorus Iron Ore
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Mechanism of phosphorus removal in beneficiation of high phosphorous
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 phosphorus from the oreThis paper reports the experimental results on ore beneficiation, pretreatment of hot metal with high phosphorus and dephosphorization during direct reduction. It would provide technology support for the efficient utilization of high phosphorus Oolitic Hematite, and also provide technology for industrial demonstrating projects.Development of Technologies for High Phosphorus Oolitic Hematite
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A New Route to Upgrading the High-Phosphorus Oolitic Hematite Ore
In this paper, an innovative method is proposed to upgrade iron and remove phosphorus from high-phosphorus oolitic hematite ore by the sodium magnetization roasting–magnetic separation–sulfuric acid and sodium hydroxide leaching process. The process parameters of sodium magnetization roasting, acid leaching, and alkaline The chemical composition of phosphate ore, the solid residue and the acid leaching solution are showed in Table 1. The grades of P 2 O 5 and SiO 2 in the phosphate ore are 21.95% and 28.48%, respectively, indicating it is a medium–low grade phosphate ore with a high silicon content. The main component of the solid residue is SiO 2.A new enrichment method of medium–low grade phosphate ore with high
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(PDF) A Review on New Technological Progress for Beneficiation of
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 ndTrans. Nonferrous Met. Soc. China 22(2012) 2806−2812 Mechanism of phosphorus removal in beneficiation of high phosphorous oolitic hematite by direct reduction roasting with dephosphorization agent XU Cheng-yan, SUN Ti-chang, KOU Jue, LI Yong-li, MO Xiao-lan, TANG Li-gang Key Laboratory of High-Efficient Mining and Safety of Metal Mechanism of phosphorus removal in beneficiation of high phosphorous
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Existing and New Processes for Beneficiation of Indian Iron
The iron ore industries of India are expected to bring new technologies to cater to the need of the tremendous increase in demand for quality ores for steel making. With the high-grade ores depleting very fast, the focus is on the beneficiation of low-grade resources. However, most of these ores do not respond well to the conventional Li et al. reported the effect of sodium sulfate on reduction roasting and P removal from high-phosphorus oolitic hematite ore.The results showed that a magnetic concentrate with total iron grade of 92.7% and phosphorus content of 0.09% was produced from an oolitic hematite ore containing 48.96% iron and 1.61% phosphorus, where Synchronous Upgrading Iron and Phosphorus Removal from High Phosphorus
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中国炼铁行业碳排放现状及对策 USTB
文章亮点. (1) 系统地综述了中国炼铁工业的碳排放现状及主要降碳措施。. (2) 总结了发展气基直接还原及烧结转球团等低碳冶炼现状及面临的挑战。. (3) 总结了中国选矿技术的发展，从选冶联合的角度为钢铁冶炼的低碳发展提供了思路。. 钢铁工业是一个高能耗The effects of sodium sulfate dosage on the quality of DRI, especially on its sulfur content were studied. The phase transitions of sodium sulfate during the roasting and beneficiation processes were studied as well. 2. Experimental2.1. Materials. A high phosphorus oolitic iron ore sample was obtained from Hubei province, China.Can sodium sulfate be used as an additive for the reduction
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Recovery of iron from high phosphorus oolitic iron ore using
Oolitic iron ore is one of the most important iron resources. This paper reports the recovery of iron from high phosphorus oolitic iron ore using coal-based reduction and magnetic separation. The influences of reduction temperature, reduction time, C/O mole ratio, and CaO content on the metallization degree and iron recovery were investigated in Li et al. reported the effect of sodium sulfate on reduction roasting and P removal from high-phosphorus oolitic hematite ore.The results showed that a magnetic concentrate with total iron grade of 92.7% and phosphorus content of 0.09% was produced from an oolitic hematite ore containing 48.96% iron and 1.61% phosphorus, where Synchronous Upgrading Iron and Phosphorus Removal from High Phosphorus
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Characterization studies on Agbaja iron ore: a high-phosphorus
The principal constituent mineral has been reported to be goethite, with minor quantities of haematite, maghemite, siderite, quartz, kaolinite, pyrite, and an average of 0.09% S [ 8, 9, 73 ]. The Agbaja iron ore is also reported to have a high phosphorus content in the range of 0.76–2.13% [ 25, 26, 75] which makes its use in iron making inThe application of coal-based reduction in the efficient recovery of iron from refractory iron-bearing resources is comprehensively reviewed. Currently, the development and beneficiation of refractory iron-bearing resources have attracted increasing attention. However, the effect of iron recovery by traditional beneficiation methods is Review on coal-based reduction and magnetic separation for
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Effect of ore solid concentration on the bioleaching of phosphorus
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 : Download full-size image; Fig. 2. (a) SEM of polished surface of the high-phosphorus iron ore and (b) SEM of one particle section of the high-phosphorus the exploitation of similar high phosphorus limonite ore. 2. Experimental 2.1. Materials The limonite ores with high content of phosphorus used in the present work were collected from Huimin iron ore deposits, in Yunnan Province of China. Table 1 shows the chemical composition of the high phosphorus limonite ore.Beneficiation of High Phosphorus Limonite Ore by
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Synchronous Upgrading Iron and Phosphorus Removal from High Phosphorus
Li et al. reported the effect of sodium sulfate on reduction roasting and P removal from high-phosphorus oolitic hematite ore.The results showed that a magnetic concentrate with total iron grade of 92.7% and phosphorus content of 0.09% was produced from an oolitic hematite ore containing 48.96% iron and 1.61% phosphorus, where The high-phosphorus iron ore used in this work was obtained from Daye region of Hubei province of China. The ore was pulverized, ground and dried at 104 °C. The fraction with particle sizes between 150 and 200 mesh was used in this work. The main chemical components of the sample of high-phosphorus iron ore were listed in Table 1.Effect of ore solid concentration on the bioleaching of phosphorus
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A new iron recovery and dephosphorization approach from high‑phosphorus
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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