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investigation of ductile iron dephosphorization

investigation of ductile iron dephosphorization

Dephosphorization Treatment of High Phosphorus Iron Ore by Pre ... Jan 1, 2011 ... The dephosphorization treatment of the pre-reduced iron ore by mechanical ... of the Hamersley high phosphorus iron ore used in this investigation. ..... the elongation of the ductile reduced iron particles and the entrapment of...

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Dephosphorization and Desulfurization of Molten Ductile ...

desulfurization and dephosphorization of the ductile iron without any oxygen lancing which was successful to certain limit. Objectives The project focused on: i. The study of process for reduction of phosphorus percentage. ii. The investigation of the elongation and strength of ductile iron. SCOPES i.

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Dephosphorization - an overview ScienceDirect Topics

Jan 05, 2012  More than 90% of the phosphorus load enters the iron and the rest is lost either in the slag or in the flue gas or is absorbed in the refractory linings [27]. Therefore, production of low P hot metal is only possible by using low P-bearing coke and ore. Dephosphorization requires oxidizing conditions, and cannot be conducted in the blast ...

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Dephosphorization Treatment of High Phosphorus Iron Ore by ...

dephosphorization treatment of high phosphorus iron ore pre-reduction, air jet milling and screening methods. Pro-cessing parameters to improve the total iron yield and the dephosphorization behavior are also proposed. 2. Fundamentals of Air Jet Milling The

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(PDF) Dephosphorization Treatment of High Phosphorus Iron ...

The results shown in Figs. 3(a) and 3(b) indicate the importance of the role played by the pre-reduction conditions in the dephosphorization treatment of the prereduced iron ore. 1,2) Effect of Gas Kinetic EnergyThe effect of gas kinetic energy on the dephosphorization behavior was investigated in samples pre-reduced at 1100°C for 3 h and ...

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Investigations of the Dephosphorization of Liquid Iron ...

ization process, when applied to chromium steels, requires slag with high dephosphorization properties, as either chromium or chromium oxide entering the slag decreases distinctly the efficiency of the process. The results of laboratory investigations on the dephosphorization of liquid iron solutions containing chromium and nickel are presented.

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Investigations of the Dephosphorization of Liquid Iron ...

Jan 14, 2012  The most up-to-date trends in stainless steel production—aiming at the reduction of production costs—consist of the substitution of steel scrap by hot metal, coming from the reduction of iron-chromium ores. This process requires a more extensive dephosphorization. The dephosphorization process, when applied to chromium steels, requires slag with high dephosphorization

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Dephosphorization Treatment of High Phosphorus Iron

dephosphorization treatment of high phosphorus iron ore pre-reduction, air jet milling and screening methods. Pro-cessing parameters to improve the total iron yield and the dephosphorization behavior are also proposed. 2. Fundamentals of Air Jet Milling The

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journals on dephosphorization of iron ore

Alloy design of ductile phosphoric iron: Ideas from archaeometallurgy. which the iron ore was reduced in the solid state. ... due to dephosphorization by the sla g. This is also a typical characteristic of ancient Indian iron

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(PDF) Dephosphorization Treatment of High Phosphorus Iron ...

The dephosphorization treatment of the as-received high 5) R. L. Stephenson and R. M. Smailer (Eds.): Direct Reduced Iron, phosphorus iron ore by mechanical crushing and screening Technology and Economics of Production and Use, The Iron and methods resulted in the low recovery of iron oxides.

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journals on dephosphorization of iron ore

Investigation Of Ductile Iron Dephosphorization Investigation Of Ductile Iron Dephosphorization This page is about journals on dephosphorization of iron ore click here to get more infomation about journals on dephosphorization of iron orecoal mining processing plant in

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Investigation of Phase Transformations in Ductile Cast Iron

Investigation of phase transformations in ductile cast iron of differential scanning calorimetry. R Przeliorz and. J Piątkowski. Department of Materials Technology, Silesian University of Technology, Krasińskiego 8, 40-019 Katowice, Poland E-mail: [email protected] Abstract.

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RESEARCH PROJECT No. 46 - Ductile Iron Society

Sep 30, 2010  Keywords: Ductile iron, ferrite, pearlite, heat treatment, microstructure, strength, ductility ABSTRACT The purpose of this research study was to identify ways to achieve a higher combination of strength and ductility, by characterizing the relationships between the graphite-metal matrix, alloy content, and tensile properties in ductile iron.

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Elimination and Neutralization of Boron in Ductile Irons

Recent technical bulletins in the Ductile Iron Society offer somewhat different findings. Lyle Jenkins reported that boron pickup could be responsible for reduced BHN hardness in pearlitic ductile iron and that increased levels of tin and copper were required for neutralizion [9]. Typical boron levels in ductile iron are 0.0015% (15 ppm).

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MODIFICATION OF PIG IRON COMPOSITION AND ITS EFFECT ON

Jan 01, 1989  The sulfur content decreases from 0.082% to less than 0.015%, the phosphorus from 0.16% to 0.063% and the Mn from 0.71% to 0.03% (i.e. 82%, 61% and 96% respectively) After modification treatment of the base iron melt,ductile iron castings have been produ ced using a nodulizing mixture containing elemental magnesium and ferrosilicon (Mg + FeSi ...

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INVESTIGATION OF DUCTILE IRON ‘SANDWICH’

General about ductile iron Type of treatment to convert cast iron to ductile iron Sandwich treatment 3 4 5 1.6 Objective 6 1.7 1.8 Scope 1.7.1 Variable of pattern size range from 0.5kg-1.5kg 1.7.2 Variable of percentage ferrosilicon magnesium range from 0.2%-0.6% 1.7.3 Fixed type of pocket, which is normal pocket. Problem statement 7 7

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Investigation of phase transformations in ductile cast ...

The effect of heating rate on phase transformations to austenite range in ductile cast iron of the EN-GJS-450-10 grade was investigated. For studies of phase transformations, the technique of differential scanning calorimetry (DSC) was used. Micro structure was examined by optical microscopy. The calorimetric examinations have proved that on heating three transformations occur in this grade of ...

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Experimental investigations on wear process parameters ...

An investigation was carried out to examine the influence of austempering temperature on microstructural parameters and the wear behaviour of austempered ductile iron. Ductile iron was ...

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Conversion of Mill Scale Waste into Valuable Products via ...

Mill scale is one of waste materials which is produced as a result of hot rolling of steel in all steel companies. On the other hand, mill scale is considered a rich iron source with minimum impurities. This work aims at conversion of mill scale by adjusting smelting processes to produce different valuable products. The smelting processes were carried out using carbothermic reduction in a ...

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MECHANICAL PROPERTY INVESTIGATION OF HARDENED

1.2.Birth of ductile iron 1.3.Production of ductile iron 1.4.Chemical 1.5.Different micro-constituents in ductile iron 1.6.Types of ductile iron 1.7.Effect of alloying on matrix structure 1.8.Mechanical properties of ductile iron 1.9.Factors affecting Properties of Ductile Iron 1.10. Heat Treatment of Ductile Iron 1.11. Applications of ductile iron

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(PDF) Dephosphorization Treatment of High Phosphorus Iron ...

ed in the elongation of the ductile reduced iron particles and. ... variables for investigation were ... These findings leads to a new idea on the dephosphorization of a high -phosphorous iron ore ...

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RESEARCH PROJECT No. 46 - Ductile Iron Society

Sep 30, 2010  Keywords: Ductile iron, ferrite, pearlite, heat treatment, microstructure, strength, ductility ABSTRACT The purpose of this research study was to identify ways to achieve a higher combination of strength and ductility, by characterizing the relationships between the graphite-metal matrix, alloy content, and tensile properties in ductile iron.

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Investigations on the Microstructure and Fracture of ...

Keywords: alloyed ductile iron (ADI), bainitic transformation, retained austenite Abstract. An investigation has been conducted on two austempered ductile irons (ADI) alloyed with Cu (0.45%) and Cu (1.6%) + Ni (1.5%) austempered at 350oC in a range of times. The microstructure and fracture mode developed throughout these treatments have

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INVESTIGATION OF DUCTILE IRON ‘SANDWICH’

General about ductile iron Type of treatment to convert cast iron to ductile iron Sandwich treatment 3 4 5 1.6 Objective 6 1.7 1.8 Scope 1.7.1 Variable of pattern size range from 0.5kg-1.5kg 1.7.2 Variable of percentage ferrosilicon magnesium range from 0.2%-0.6% 1.7.3 Fixed type of pocket, which is normal pocket. Problem statement 7 7

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MECHANICAL PROPERTY INVESTIGATION OF HARDENED

1.2.Birth of ductile iron 1.3.Production of ductile iron 1.4.Chemical 1.5.Different micro-constituents in ductile iron 1.6.Types of ductile iron 1.7.Effect of alloying on matrix structure 1.8.Mechanical properties of ductile iron 1.9.Factors affecting Properties of Ductile Iron 1.10. Heat Treatment of Ductile Iron 1.11. Applications of ductile iron

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Experimental investigations on wear process parameters ...

An investigation was carried out to examine the influence of austempering temperature on microstructural parameters and the wear behaviour of austempered ductile iron. Ductile iron was ...

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Investigation of phase transformations in ductile cast ...

The effect of heating rate on phase transformations to austenite range in ductile cast iron of the EN-GJS-450-10 grade was investigated. For studies of phase transformations, the technique of differential scanning calorimetry (DSC) was used. Micro structure was examined by optical microscopy. The calorimetric examinations have proved that on heating three transformations occur in this grade of ...

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Federal Register :: Certain Ductile Iron Waterworks ...

Jan 02, 2004  Start Preamble Determination . On the basis of information developed in the subject investigation, the United States International Trade Commission determines, pursuant to section 421(b)(1) of the Trade Act of 1974, [] that certain ductile iron waterworks fittings [] from the People's Republic of China are being imported into the United States in such increased quantities or under such ...

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Rub'Nawaz Ansari - Deputy General Manager (Production ...

Mar 13, 2017  dephosphorization and desulfurization of molten ductile iron and its effect on ductility ELEMENT / PAKISTAN FOUNDRY ASSOCIATION August 1, 2013 The project focused on the study of process for reduction of phosphorus percentage and the investigation of its effect on the elongation and strength of ductile iron.

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ENVIRONMENTAL EMBRITTLEMENT OF DUCTILE IRON

Ferritic Ductile Iron Figure 1 presents the results of the investigation carried out by Druschitz et al [8] on 65-45-12 ferritic Ductile Iron tested at low strain rate (1% per minute) at room temperature, in contact with various liquid environments; no embrittlement was

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Ductile-Iron Pipe and Fittings

A more detailed description of the joints used with ductile-iron pipe is found in chapter 5 of this manual. 1.1.3 Development of Ductile-Iron Pipe The advent of ductile-iron pipe in 1948 was one of the most significant developments in the pressure pipe industry. Quickly recognized as a

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The Ductile Iron News

Si Ductile Iron and may explain the different embrittlement behavior reported by Druschitz. Spheroidization of pearlite during tempering for two hours at 565oC is considered probable by Mullins (13). Quenched and Tempered Ductile Iron Figures 5 a) and b) present the results obtained by Druschitz (6) and

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Phase Investigation of Austempered Ductile Iron

73 Phase Investigation of Austempered Ductile Iron S 1K SWAIN , R 3K PANDA2, J 5P DHAL , S C MISHRA4 and S SEN 1,4,5Department of Metallurgical Materials Engineering 2Department of Physics 3Department of Chemistry National Institute of Technology, Rourkela-769008, Odisha, India

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