ji study on dephosphorization technology for high phosphorus

ji jun study on dephosphorization technology for high ...

0106 Phosphorus Removal of High Phosphorus Iron Ore by GasBased Reduction and Melt Separation JI Jun. Study on Dephosphorization Technology for High . 5th International Symposium on HighTemperature . High Efficiency New Metallurgical Technology 2: Study on Dephosphorization Pretreatment in Process of Oolitic HighPhosphorus Iron

STUDY ON DEPHOSPHORIZATION TECHNOLOGY FOR HIGH

STUDY ON DEPHOSPHORIZATION TECHNOLOGY FOR HIGH-PHOSPHORUS IRON ORE. JI Jun (Beijing General Research Institute of Mining and Metallurgy,Beijing 100044,China) In this paper,the importance of dephosphorization process in treatment of highphosphorus iron ore is discussed based on a review of the present situation in the concerned fieldsA ...

Impact of slag composition activity on the behavior of ...

Jun JiStudy on dephosphorization technology for high phosphorus iron ore. Min Metall, 12 (2) (2003), pp. 33-37. Google Scholar. Jicheng Zhou, Zhengliang Xue, Haifeng ZhangResearch on dephosphorization technology of high phosphorus oolitic hematite ore. Ironmaking, 26

Cited by: 3

Removal of phosphorus from iron ores by chemical leaching ...

Dec 01, 2006 JI Jun. Study on dephosphorization the chnology for high-phosphorus iron ore[J]. Mining Metallurgy, 2003, 12(2): 33–37. (in Chinese) MathSciNet Google Scholar

Cited by: 72

Effect of coal levels during direct reduction roasting of ...

May 01, 2012 The effect of coal levels on phosphorus removal from a high phosphorus oolitic hematite ore after direct reduction roasting have been investigated. Raw ore, coal, and a dephosphorization agent were mixed and the mixture was then roasted in a tunnel kiln. The roasted products were treated by two stages of grinding followed by magnetic separation.

Cited by: 26

Phosphorus Removal of High Phosphorus Iron Ore by Gas ...

Minerals Engineering, 1999, 12(9) : 1083. A1 Guang-hua, YU Xin-yang, WE1 Zong-wu. Research on Iron Increase and Dephosphorization of Refractory High Phosphorus Hematite limonite Ore [J]. Mining and Metallurgical Enginee ring, 2008, 29(2) : 46 (in Chinese). JI Jun. Study on Dephosphorization Technology for High-Phos- phorus Iron Ore [J].

Dephosphorization - an overview ScienceDirect Topics

Jan 05, 2012 Since 1987, many steelmaking plants in Japan had been concerned about the hot metal dephosphorization pretreatment in the converter and had made rapid progress on this technology. Different technological conditions and product requirements in steelmaking plants led to different dephosphorization pretreatment approaches, as shown in Fig. 6.57, from which we can see that the dephosphorization

(PDF) Removal of phosphorus from iron ores by chemical ...

Alkali-leaching and acid-leaching were proposed for the dephosphorization of Changde iron ore, which contains an average of 1.12% for phosphorus content.

Removal of Phosphorus From High Phosphorus Iron Ores by ...

The P content of all samples including high phosphorus iron ore was analyzed by bismuth- phosphomolybdenum blue spectrophotometric method (JH-722N, Shanghai Qing Hua Science and Tech- nology Instrument Co Ltd China). 2 Results and Discussion 2. 1 On the condition of reaction temperature 60 'C , stirring strength 12. 76 s-l, particle size 0. 147 ...

Effect of Na2CO3 and CaCO3 on coreduction roasting of ...

Abstract. Iron was recovered from blast furnace dust and high-phosphorus oolitic hematite in the presence of Na 2 CO 3 and CaCO 3 additives. The functions of Na 2 CO 3 and CaCO 3 during the coreduction roasting process were investigated by XRD and SEM-EDS analyses. Results indicate that these additives not only hinder the reduction of fluorapatite, CaCO 3 also decreases the P content of

New dephosphorizing agent for phosphorus removal from high ...

JI Jun (Beijing General Research Institute of Mining and Metallurgy,Beijing 100044,China);STUDY ON DEPHOSPHORIZATION TECHNOLOGY FOR HIGH-PHOSPHORUS IRON ORE[J];Mining and Metallurgy;2003-02 9 HUI Shi-cheng, DAI Hui-xin(Kunming University of Science and Technology,Kunming,Yunnan 650093,China); Status Quo and Prospects of Phosphorus Reduction

Dephosphorization of High-Phosphorus Iron Ore Using ...

Dephosphorization of High-Phosphorus Iron Ore Using Different Sources of Aspergillus niger Strains. Xiao C(1), Wu X, Chi R. Author information: (1)Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, 430073, Wuhan, China.

Phosphorus removal performance and biological ...

1. Bioresour Technol. 2017 Nov;243:204-211. doi: 10.1016/j.biortech.2017.06.092. Epub 2017 Jun 19. Phosphorus removal performance and biological dephosphorization process in treating reclaimed water by Integrated Vertical-flow Constructed Wetlands (IVCWs).

Dephosphorization of high phosphorus oolitic hematite by ...

Most of the earlier studies on dephosphorization by acid leaching were conducted to study the effect of time, temperature, acid concentration, etc. (Xia et al., 2011, Yu and Muhammed, 1990) The leaching kinetics of the high phosphorus oolitic iron ore was rarely investigated, except for the H 2 SO 4 leaching kinetics of the typical oolitic iron ...

Mass transfer of phosphorus in high-phosphorus hot-metal ...

Abstract. Mass transfer of phosphorus in high-phosphorus hot-metal refining was investigated using CaO-Fe t O-SiO 2 slags at 1623 K. Based on a two-film theory kinetic model and experimental results, it was found that the overall mass transfer coefficient, which includes the effects of mass transfer in both the slag phase and metal phase, is in the range of 0.0047 to 0.0240 cm/s.

(PDF) Removal of phosphorus from iron ores by chemical ...

Alkali-leaching and acid-leaching were proposed for the dephosphorization of Changde iron ore, which contains an average of 1.12% for phosphorus content.

Microwave Assisted Liberation of High Phosphorus Oolitic ...

Ji, J. (2003) Study on Dephosphorization Technology for High-Phosphorus Iron Ore. Mining Metallurgy. 12, 33-37. Xia, W.T., Ren, Z.D. and Gao, Y.F. (2011) Removal of Phosphorus from High Phosphorus Iron Ores by Selective HCl Leaching Method. International Journal of Iron and Steel Research, 18, 1-4.

Research on phosphorus removal by different coagulants ...

1: YU Shihua1,DONG Xiaole1,GONG Hong1,JIANG Heng1, LIU Zhigang2,MIAO Zhuang3 (1.School of Chemistry and Materials Science,Liaoning Shihua University,Fushun Liaoning 113001,China;2.Analysis and Test Center,Jilin Institute of Chemical Technology,Jilin Jilin 132022,China;3.Catalyst plant of CNPC Fushun Petrochemical Company,Fushun Liaoning 113001, China);Adsorption of Phosphate by

(PDF) Selective Leaching of Steel Pollutant Element from ...

Study on Dephosphorization Technology for High-Phosphorus, Iron Ore Mining Metallurgy Removal of Phosphorous from Iron Ores by Chemical Leaching ... Jun, J., " Study on Dephosphorization ...

Enrichment Behavior of Phosphorus in CaO-SiO_2-Fe_tO-P_2O ...

The distribution of phosphorous in bulk slag,inside and outside the 2CaOSiO2 in the molten CaO-SiO2-FetO-P2O5 slag was investigated.The research results showed that the existing 2CaOSiO2 solid particles are the condensation sites for the phosphorous enrichment.The enrichment process of phosphorus in the molten slag can be considered as the three substeps: ① the mass transfer of ...

Influence of Mechanical Activation on Acid Leaching ...

Jul 01, 2016 High pressure roll grinding (HPRG) and ball milling were compared to investigate the influence of mechanical activation on the acid leaching dephosphorization of a high-phosphorus iron ore concentrate, which was manufactured through magnetizing roasting-magnetic separation of high-phosphorus oolitic iron ores. The results indicated that when high-phosphorus iron ore

(PDF) Microwave Assisted Liberation of High Phosphorus ...

ing of Phosphorus from High-Phosphorus Iron Ores Using Indigenous Sulfur-Oxidizing Bacteria from Municipal Wastewater. Process Biochemistr y , 45 , 1624-16 31.

Cemented backfill technology based on phosphorous gypsum ...

JI J. Study on dephosphorization the technology for high-phosphorus iron ore [J]. Mining Metallurgy, 2003, 12(2): 33–37. (in Chinese) MathSciNet; Google Scholar [3] China Environment Protection Bureau. Investigation report on damage and rebuild of ecology environment in mine development [R]. Beijing: China Environment Protection Bureau, 2004.

journals on dephosphorization of iron ore

Dephosphorization process of high phosphorus oolitic iron ore by acid leaching and leaching kinetics were investigated in the paper. The high phosphorus ore samples (51%T.Fe, 0.52%P) used in this work were analysed by SEM-EDS and XRD, which showed their oolitic structure and mineral phases.

Microwave Assisted Liberation of High Phosphorus Oolitic ...

phosphorus testing equipment for iron ore

phosphorus crusher machines . phosphorus iron ore crusher china shatadiauctioneerscoza. high phosphorus iron ore beneficiation in china industry Mechanism of phosphorus removal in beneficiation of high phosphorus iron ore crusher china sulphurGulin is a iron ore machine manufacturer in China tailings. ... electronic phosphorus testing equipment for iron ore ...

(PDF) Effects of calcium ferrite slag on dephosphorization ...

For the 13 test heats with 6 min of oxygen blowing, the rate of dephosphorization and phosphorus distribution ratio reached to 50–60% and 55.9, respectively, when the calcium ferrite pellets ...

Mass transfer of phosphorus in high-phosphorus hot-metal ...

Using a mixed control model, i.e., mass transfer in both slag and metal phases, Diao et al. [29] studied the dephosphorization of high phosphorus hot metal using slag of high basicity (wt pct CaO ...

(PDF) Microwave Assisted Liberation of High Phosphorus ...

ing of Phosphorus from High-Phosphorus Iron Ores Using Indigenous Sulfur-Oxidizing Bacteria from Municipal Wastewater. Process Biochemistr y , 45 , 1624-16 31.

(PDF) Selective Leaching of Steel Pollutant Element from ...

Study on Dephosphorization Technology for High-Phosphorus, Iron Ore Mining Metallurgy Removal of Phosphorous from Iron Ores by Chemical Leaching ... Jun, J., " Study on Dephosphorization ...

New dephosphorizing agent for phosphorus removal from high ...

PRETREATMENT OF REDUCTIVE DEPHOSPHORIZATION

Oxidizing dephosphorization and reductive dephosphorization (RDP) are two methods for dephosphorization of ferroalloys. The concentrations of phosphate and phosphide in slag depend on the partial pressure of phosphorus, the partial pressure of oxygen and temperature [4]. Phosphorus is easy to be dissolved in

Beneficiation of High‐Phosphorus Siderite Ore by Acid ...

Dec 29, 2016 In this study, the beneficiation of high‐phosphorus siderite ore by acid leaching dephosphorization, alkaline oxide reinforced carbothermic reduction and magnetic separation is investigated. X‐ray diffraction (XRD), scanning electron microscopy (SEM), and energy‐dispersive analysis (EDS) are employed to characterize the samples.

Simulation and Application of Top Lance with Various Tilt ...

Phosphorus is known as embrittlement prone during heat treatment and to decrease the ductility of steel. For petro-leum pipeline, cryogenic vessel, marine and automobile exterior,1,2) lowering phosphorus content in steel is a critical requirement. Dephosphorization is an optional oxidation process of phosphorus and carbon. Considering the ther-

Electronic Phosphorus Testing Equipment For Iron Ore

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Selective Leaching of Vanadium from Roasted Stone Coal by ...

phosphorus could exceed 98% [10]. The removal of phosphorus from high phosphorus iron ores using acid leaching had also been investigated by Chen and Jin, and the high removal rate of phosphorus has been realized [11,12]. Their studies showed that it is possible to realize the effective separation of V from P by DSAD.

Phosphorus removal performance and biological ...

In this study, IVCWs planted with different plants were employed to evaluate total phosphorus (TP) treatment performance under different hydraulic retention times (HRTs), in summer and autumn. The results showed that the systems planted with Canna generalis showed the highest TP removal efficiency (77%) under a three-day HRT in autumn.

"DEPHOSPHORIZATION OF GOETHITE ORE" by Long Zhang

With the depletion of high-grade and low phosphorus iron ore reserves, the extensive goethite ores containing high phosphorus become more attractive. However, there is a lack of effective and economic technologies for removing phosphorus from goethite ore. The current utilization of goethite ore to date has been to, first reducing the phosphorus to low of a level as practical by mineral ...