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The efficient development and utilization of highphosphorus oolitic hematite is of great strategic significance for the sustainable supply of ironore resources in China. In this paper, the mechanism of hightemperature pretreatment for enhancing the
The effect of CaCO 3,Na 2 CO 3,and CaF 2 on the reduction roasting and magnetic separation of highphosphorus iron ore containing phosphorus in the form of Fe
In this paper, the effect of reaction time, high phosphorus iron ore particle size, dephosphorization agent concentration, stirring strength (G),liquid solid ratio
HighPhosphorus Iron Ore. The ore sample used in this study was obtained from western Hubei province, China. The ore sample was ground to a particle
Highphosphorus iron ore resource is considered a refractory iron ore because of its highphosphorus content and complex ore phase structure. Therefore, the development of
The behavior of phosphorus in the solid state prereduction and dephosphorization treatment processes of high phosphorus iron ore by mechanical
This paper proposes a novel process for the pretreatment of high phosphorus iron ore by prereduction, air jet milling and screening methods. The dephosphorization behavior
This paper proposes a novel process for the pretreatment of high phosphorus iron ore by prereduction, air jet milling and screening methods. The dephosphorization behavior
The behavior of phosphorus in the solid state prereduction and dephosphorization treatment processes of high phosphorus iron ore by mechanical
The high phosphorus ore samples (51%T.Fe, 0.52%P) used in this work were analysed by SEMEDS and XRD, which showed their oolitic structure and mineral phases. Among the
With the development of the steel industry, the use of highgrade and easytohandle iron ore is gradually decreasing. At present, the effective utilization of lowgrade and refractory iron ore, particularly highphosphorus oolitic iron ore, has gradually become a research hotspot and a worldwide problem. This type of ore is mainly
Xia et al. (2011) studied the phosphorus removal from high phosphorus iron ores by selective HCl leaching, and the content of phosphorus in iron ore can comply completely with the requirements of steel production after the dephosphorization reaction. Iron ore with Fe < 60% can be used as raw material to produce the direct reduced iron,
HighPhosphorus Iron Ore. The ore sample used in this study was obtained from western Hubei province, China. The ore sample was ground to a particle size of 0.07–0.15 mm. Xray diffraction (XRD) analysis showed that the sample was mainly composed of hematite (αFe 2 O 3) and a small quantity of quartz and apatite (Ca 2 PO 4
The behavior of phosphorus in the solid state prereduction and dephosphorization treatment processes of high phosphorus iron ore by mechanical crushing and screening methods were investigated in the present work. The reduction behavior of high phosphorus iron ore by carbonaceous materials was evaluated as a function of
Dephosphorization treatment of high phosphorus iron ore by prereduction, air jet milling and screening methods. ISIJ Int., 51 (2011) Research on reaction mechanism of vacuum carbon thermal reduction and dephosphorization in high phosphate iron ore. Metals, 8 (), pp. 11031120.
Strengthening iron enrichment and dephosphorization of highphosphorus oolitic hematite using hightemperature pretreatment. Y.S. Sun, Y.F. Li, Y.X. Han, and Y.J. Li, Migration behaviors and kinetics of phosphorus during coalbased reduction of highphosphorus oolitic iron ore, Int. J. Miner. Metall.
This paper proposes a novel process for the pretreatment of high phosphorus iron ore by prereduction, air jet milling and screening methods. The dephosphorization behavior was evaluated as a function of such parameters as the milling gas kinetic energy, E k and specific energy consumption, E sp. At a fixed milling gas kinetic energy, the
The behavior of phosphorus in the solid state prereduction and dephosphorization treatment processes of high phosphorus iron ore by mechanical crushing and screening methods were investigated in
The behavior of phosphorus in the solid state prereduction and dephosphorization treatment processes of high phosphorus iron ore by mechanical crushing and screening methods were investigated in the present work. The reduction behavior of high phosphorus iron ore by carbonaceous materials was evaluated as a function of reduction temperature, reduction
Highphosphorus iron ore is traditionally dephosphorized by chemical process with inorganic acids. However, this process is not recommended nowadays because of its high cost and consequent environmental pollution. With the current tendency for development of a lowcost and ecofriendly process, deph
With the development of the steel industry, the use of highgrade and easytohandle iron ore is gradually decreasing. At present, the effective utilization of lowgrade and refractory iron ore, particularly highphosphorus oolitic iron ore, has gradually become a research hotspot and a worldwide problem. This type of ore is mainly
The dephosphorization treatment of the prereduced iron ore by mechanical crushing and screening methods was evaluated as a function of the initial reduction condition, screen size, and the mechanical property of the reduced iron ore phase. KEY WORDS: high phosphorus iron ore; dephosphorization treatment; solid state reduction; mechanical
The reduction roasting followed by magnetic separation process is considered to be a suitable method to treat the highphosphorus oolitic iron ore. Currently, the dephosphorization mechanism of additives such as CaCO 3,Ca(OH) 2,Na 2 SO 4,and Na 2 CO 3 on the reduction roasting of the iron ore in which phosphorus occurs in
An innovative process of coalbased reduction followed by magnetic separation and dephosphorization was developed to simultaneously recover iron and phosphorus from one typical highphosphorus refractory iron ore. The experimental results showed that the iron minerals in iron ore were reduced to metallic iron during the coal
The high phosphorus ore samples (51%T.Fe, 0.52%P) used in this work were analysed by SEMEDS and XRD, which showed their oolitic structure and mineral phases. Among the three kinds of acids (H2SO4, HCl and HNO3), sulfuric acid was the most appropriate one for dephosphorization, and structure changes after leaching were also investigated through
The behavior of phosphorus in the solid state prereduction and dephosphorization treatment processes of high phosphorus iron ore by mechanical crushing and screening methods were investigated in the present work. The reduction behavior of high phosphorus iron ore by carbonaceous materials was evaluated as a function of reduction temperature, reduction
Phosphorus can be removed from iron ore by very different routes of treatment. The genesis of the reserve, the mineralogy, the cost and sustainability define the technology to be applied. The
Highphosphorus iron ore is traditionally dephosphorized by chemical process with inorganic acids. However, this process is not recommended nowadays because of its high cost and consequent environmental pollution. With the current tendency for development of a lowcost and ecofriendly process, deph
dephosphorization reaction. Iron ore with Fe< 60% can be used as raw material to produce the direct reduced iron, by coalbased direct reduction, or the slag/metal separation process of the reduced iron from the oolitic highphosphorus iron ore fines by gas (Tang et al., 2014). Yu et al. (2013) thought sulfuric acid was the most appropriate
In the process of resource utilization of high phosphorus iron ores, phosphorus should be removed first. Compared to other dephosphorization methods, selective leaching with acid has special advantages such as high dephosphorization ratio, low iron loss and so on. However, a large amount of acidic wastewater containing phosphorus was produced
