Technical Report Improvement in Hot-Metal Dephosphorization
The converter-type hot-metal dephosphorization uses a large freeboard, ample oxygen-blowing capacity, and metal bath stirring by bottom gas blowing of converters, and thus is …
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De-Phosphorization Strategies and Modelling in Oxygen …
iron oxide in the slag, it is favorable to work at elevated (%Fe t O) content. But, as shown in Figure 3 [4][5], the L P is initially enhanced with increasing (%Fe t O) in the range of 15% to …
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"DEPHOSPHORIZATION OF STEEL PRODUCED FROM …
In the primary route of steel making iron ore is used as raw material. In the first stage iron ore is melted in a blast furnace to produce hot metal, and in second stage this hot metal is moved to …
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Desphosphorization in ironmaking and oxygen steelmaking
In BOS pathway, the iron ore is primarily reduced by coke in a blast furnace (BF) where the coke also produces heat for the reactions by oxidation from atmospheric oxygen and iron oxide.
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Flux Development for Dephosphorization of Steel in Induction …
Equilibrium sulphur distribution between slag and liquid iron has been studied at the temperature range from 1 573 to 1 953 K. The slag systems studied were of FetO-P2O5-MxOy …
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Farshid Pahlevani Resume/CV | The University of New South …
Farshid Pahlevani A*STAR, Singapore Institute of Manufacturing and Technology (SIMTech) Forming Technology Group 71 Nanyang Drive, Singapore 638075 Phone: (+65) 67938357 …
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Dephosphorization Treatment of High Phosphorus Iron Ore …
KEY WORDS: high phosphorus iron ore; dephosphorization treatment; solid state reduction; mechanical ... (Hamersley) used in this investigation (mass%). as-received iron ore samples …
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Dephosphorization in the early stage of converter …
The average dephosphorization efficiency in the early stage of steelmaking is 65.1%, and the distribution ratio of phosphorus between slag and iron is 49.8%. Phosphorus in molten iron is reduced to 0.025%.
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Dephosphorization of Steels
Dephosphorization of steels has become a very important metallurgical technique in steelmaking process to produce high quality steels. As the P content is controlled by the reactions in BOF, the double slag technique …
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Dephosphorization in New Double Slag Converter …
15min, the dephosphorization ratio reaches the highest value of 83.2%. When the dephosphorization times are 3 and 6min, the main phases of dephospho-rization slag are …
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Dephosphorization Treatment of High Phosphorus Iron Ore
the most important sources of iron ore on the planet. BIFs in the Hamersley Iron Formation are the world's most extensive banded iron formations, contributing to about ten percent of the …
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Investigation of phosphorus removal and dephosphorization …
In recent years, the quality of iron ores has decreased due to the increase in the content of impurities, namely quartz, aluminum, phosphorus, and sulfur. It indicates that the …
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(PDF) Investigation of the Effect of Novel Two-Step …
In this investigation, a nodular or ductile cast iron with predominantly pearlitic as-cast structure was processed by a novel two-step austempering process. Two batches of …
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Dephosphorization
Phosphorus in the charge could be at higher than usual levels for DRI, HBI, pig iron, and hot metal, depending on the iron ore source. Some steels require particularly low P levels to avoid …
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Dephosphorization Treatment of High Phosphorus Iron Ore …
ed in the elongation of the ductile reduced iron particles and the entrapment of the gangue within the elongated reduced ... the jet milling apparatus used in this investigation. Batch ... achieve …
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Experimental investigation of ductile iron water pipes with …
Ductile iron (DI) is a commonly used metallic material for underground water pipelines [1].In China, DI pipes surpassed grey cast iron (CI) pipes in usage in 2009, and …
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Dephosphorization Treatment of High Phosphorus Iron Ore …
mic reduction process and the dephosphorization treatment of high phosphorus iron ore by pre-reduction, mechanical crushing and screening methods were discussed in the pre-vious …
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A Review of Multi-phase Slag Refining for Dephosphorization in …
1 State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, China; 2 Technology and Research Center, Xinyu Iron and Steel …
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Dephosphorization in the early stage of converter steelmaking
The dephosphorization capacity of the slag is low, and the dephosphorization reaction between the slag and the molten iron has a large deviation value. From Figure 4, it …
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Ironmaking and Steelmaking | MDPI Books
Steel is a critical material in our societies and will remain an important one for a long time into the future. In the last two decades, the world steel industry has gone through drastic changes and …
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Six Common Ductile Iron Pipe Questions Answered
2. Why are all Ductile iron pipes "painted black"? The metal known as copper readily oxidizes when exposed to moist ambient air forming an egg-shell-thin yet highly …
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Dephosphorization in ironmaking and oxygen steelmaking
Steelmaking is an extensive industry based on modifying the physical properties of iron to fit a wide range of applications by either adding alloying elements or removal of …
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Dephosphorization When Using Direct Reduced Iron (DRI) or …
Mellon University's Center for Iron and Steel-making Research, improves the understanding of how phosphorus behaves when DRI and HBI melt. The research has also allowed researchers …
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Dephosphorization kinetics of high-P-containing reduced iron …
As shown in Figure 1, the P content of the final iron sample decreased rapidly within 600 s and was almost constant after 600–1,800 s of dephosphorization.The basicity of the slag affected …
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Dephosphorization Treatment of High Phosphorus Iron Ore …
iron particles, thereby hindering effective separation by screening methods. 1,2) Therefore, the application of uni-axial direct mechanical pressure was avoided in the present inves-
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Development of Synthetic Flux and a Process for De
Iron and steel making. 4. Salient Technical Features including Competing Features. Approximately 90% of nearly 15 million tonnes of steel produced in Indian induction furnaces, …
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High Efficiency Dephosphorization by Mixed Injection during …
A new dephosphorization technology with introduction of partial CO2 into O2 is proposed in this paper. Thermodynamic characteristics and dephosphorization mechanism by …
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investigation of ductile iron dephosphorization.md
Oct 25, 2022. ce629dbe first · ce629dbe
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Desphosphorization in ironmaking and oxygen steelmaking
steel and pipelines etc. Owing to the rising prices of iron ore, usage of cheaper high P iron ore is increasing which requires additional consideration for dephosphorization for such …
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Microstructure and Viscosity of Dephosphorization Slag in …
after dephosphorization can be smoothly carried out. The high basicity of slag is beneficial to dephosphorization but is deleterious to deslagging, while the high temperature is conducive to …
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INVESTIGATION INTO THE DEPHOSPHORIZATION OF …
INVESTIGATION INTO THE DEPHOSPHORIZATION OF FERROMANGANESE ALLOYS FOR PRODUCTION OF ADVANCED HIGH STRENGTH STEELS By Mamaotseng Patricia …
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In-Situ Investigation of Phosphorus Transformation and …
High-phosphorus oolitic hematite is recognized as one of the most refractory iron ores due to the intergrowth of phosphorus and iron, making traditional separation techniques …
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