Investigation Of Ductile Iron Dephosphorization

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 this is predicted to continue in the future. The Asian countries (e.g. China, India) have been dominant in the production of steel creating global over-capacity, while …

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Dephosphorization

From this investigation, it was concluded that the efficiency of the transitory reaction was not high and that most of the dephosphorization was due to a permanent …

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Investigations of the Dephosphorization of Liquid …

coming from the reduction of iron-chromium ores, which requires more extensive dephosphorization. For the dephosphorization of a liquid iron solution containing chromium, the slag should exhibit good dephosphorizing properties, as either chromium or chromium oxides, which enter the slag during the reﬁning process and …

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The high-efficiency dephosphorization mechanism of steel …

The dolomite raw material was heated at 1400 °C for 3 h to fabricate calcined dolomite. Dolomite is a compound salt of CaCO 3 and MgCO 3, the two carbonates will affect each other's activity, so the decomposition temperature of dolomite is different from that of pure carbonates.In general, the decomposition of MgCO 3 in …

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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 …

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A new iron recovery and dephosphorization approach from …

A new iron recovery and dephosphorization approach from unroasted high-phosphorus oolitic hematite ore via a facile chemical beneficiation process. Minghui Gong, ... Through further dephosphorization with dilute sulfuric acid at room temperature, a high-quality Fe concentrate with 63.3% Fe, 0.04% P, and a Fe recovery rate of 96% …

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Extraction of Phosphorus from Dephosphorization Slag

2.1 High-P Iron Alloy Manufacturing. Figure 23.1 shows the schematic diagram of a steelmaking process, focusing on the generation of dephosphorization slag and the process for the manufacture of P-rich iron alloy. In the steelmaking process, P resides in iron ore at concentrations of 0.05–0.06 wt%. P i is reduced to elemental P …

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An investigation of the abrasive wear behavior of ductile cast iron

The abrasion test results of different matrix structure ductile cast iron are shown in Table 3.It is known that the abrasive wear resistance, which differs from the strength limit and the hardness of materials, is the synthetic expression of the physical and chemical characteristics of materials under definite field conditions as systematic …

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Dephosphorization and Desulfurization of Molten …

Masanobu Fujii) Na2CO3 has also been used in the ductile iron desulfurization. But the practice tells it does not have any considerable impact on the dephosphorization in the …

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Phase Investigation of Austempered Ductile Iron

The product of austempering reaction in ductile iron is often referred to as ausferrite rather than bainite[1]. The high silicon content of the ductile iron suppresses the precipitation of carbide during austempering reaction and retains substantial amount of stable high carbon austenite ( HC) [1,2].

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Investigation on effect of different types of inoculants on …

Ductile cast iron; Thermal analysis; Inoculation; Undercooling; Microstructure; Citation. Sangame, B.B. and Reddy, Y.P. (2024), "Investigation on effect of different types of inoculants on the solidification of ductile cast iron using thermal analysis", Multidiscipline Modeling in Materials and Structures, Vol. ahead-of-print No. ahead-of-print.

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INVESTIGATION ON TRIBOLOGICAL BEHAVIOR OF DUCTILE …

The work in this study is focused on investigation of the tribological behavior of ductile cast iron with nanosized particles: titanium nitride TiN; titanium nitride 30% + titanium carbonitride 70 ...

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Investigation of Ionic Liquid Isolated Iron for Ductile …

5 Overview • Chemical analysis to determine the composition of Ionic liquid-sourced iron (IL-Fe) • Ductile iron ingot cast using commercial materials with a composition simulating the use of IL-Fe – Carbon (C) sourced from Bosch reactor at MSFC – Cast material referred to as Sim-IL ductile iron (DI) • Produced ingot compared to commercially available …

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Investigation of Ionic Liquids Isolated Iron for Ductile Iron …

In this investigation, the viability of casting ductile iron using ionic liquids sourced iron and nickel was explored given ductile iron's range of applications and performance as an as-cast alloy. Small ingots were produced using commercial silicon, manganese, and magnesium with carbon sourced from the by-products of a life support system ...

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Investigations of the Dephosphorization of Liquid Iron Solution

At the dephosphorization temperature range of 1385–1410 °C, the dephosphorization ratio is higher than 55%, the P2O5 content in the dephosphorization slag is 3.93–4.17%, the logLP value is 1. ...

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Comparison of microstructure and tribological behavior for ductile iron …

The tribological behavior of traditional quenched and tempered ductile iron (DI_QAT) and an innovative intensive quenched and tempered ductile iron (DI_IQAT) was investigated. ... writing - review and editing, methods, investigation and data management; Xiaoshuo Zhu's contributions include writing - review and editing, methods, supervision …

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Research on efficient utilization of high-phosphorus oolitic …

The paper proposes the innovative technology of hydrogen mineral phase transformation–magnetic separation–acid leaching for iron enrichment and dephosphorization, based on the mineralogical characteristics of high phosphorus oolitic hematite and difficulties that make it difficult to utilize traditional beneficiation for …

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Investigations of the Dephosphorization of Liquid Iron …

For the dephosphorization of a liquid iron solution containing chromium, the slag should exhibit good ... INVESTIGATION METHODS The experimental heats were run in an induction

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Investigation into the dephosphorization of …

investigate the dephosphorization of South African FeMn alloys by different synthetic CaO-based slag systems, similar to the systems applied in dephosphorization of iron. FactSage calculations FactSage™ version 7.3 was utilized. The package is a fully integrated thermodynamic database computing system developed

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Physio-Mechanical Investigation of Austempered …

Figure 1: Y–block mould for the Ductile Iron Melts. Figure 2a: Microstructure of the Ductile. Figure 2b: Microstructure of the Cast Iron (X 200) Austempered Ductile Iron (X 400). Figure 3a: Stress Strain Curve for DCI. Figure 3b: Stress Strain Curve for ADI. Carbon Sulphur Phosphorus Manganese 0.05 Max 0.03 Max 0.03 0.3

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INVESTIGATION OF DUCTILE IRON 'SANDWICH' …

This thesis deals with ductile iron parameter. There are two main objectives of this research, firstly, to investigate the processing parameter of ductile iron by using Sandwich method and to investigate the process design parameter for ductile iron.The cast iron has graphite in a matrix called pearlitic.

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Journal of Mining and Metallurgy, Section B: Metallurgy

In this investigation, the effect of the cooling rate on the metallic matrix and the nodular characteristics of a ductile iron alloyed with low concentrations of Ni and V was studied. The ductile iron was obtained using the sandwich technique with ladle inoculation. Six plates of different thicknesses from 4.3 mm to 25.4 mm were fabricated in a ...

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Investigations of the Dephosphorization of Liquid Iron …

Investigations of the Dephosphorization of Liquid Iron Solution Containing Chromium and Nickel Author KARBOWNICZEK, Miroslaw 1; KAWECKA-CEBULA, Elzbieta 1; REICHEL, Jan 2 [1] Department of Metal Engineering and Industrial Computer Science, AGH University of Science and Technology, Krakow 30-150, Poland [2] Senior Researcher, is …

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Desphosphorization in ironmaking and oxygen …

Usuall y, the phosphorus content of HM. is in the range of 0.4 -1.0% and however, the demand of content in steel is around 0.025% or. lower. The main sources of phosphorus in steelmaking are iron ...

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Numerical investigation on failure modes of bell-spigot jointed ductile

As an indispensable part of water supply networks, ductile iron (DI) pipes provide a basic guarantee for the daily water consumption of residents (Fan et al., 2022).Some geohazard records proved that permanent ground deformations, such as tectonic faults, landslides, liquefaction-induced lateral spreading, and mining or tunneling …

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Research Article Deng Nanyang, Wang Haijun*, Ling …

is found that the limiting factor of dephosphorization in the middle period under the test conditions is that the dephosphorization speed is too slow due to the low oxi-dation, rather than the solidification of phosphorus. Keywords: converter, dephosphorization, middle period slag, slag phase 1 Introduction

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Process parameter optimization of Fe-based coating on ductile iron …

Nevertheless, ductile cast iron exhibits the formation of cracks, pores with graphite carbon diffusion, and unevenly causing to a substantial decline in mechanical properties under long-term use [4], [5]. At present, ductile iron strengthening is a …

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Effect of Direct Reduced Iron (DRI) on …

content, which plays a major role in dephosphorization, viz., a decrease in the activity of CaO. An appropriate Fe tO content in CaO-based slag is therefore …

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Desphosphorization in ironmaking and oxygen …

deration for dephosphorization for such applications. Phosphorus spread within the steelmaking process owing to the recycling of BOF slag for disposal in order to retrieve iron. nd lime content in the slag and minimize slag disposal. A significant portion of the …

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Dephosphorization Treatment of High Phosphorus Iron …

Dephosphorization Treatment of High Phosphorus Iron Ore by Pre-reduction, Air Jet Milling and Screening Methods

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Research on efficient utilization of high-phosphorus oolitic …

DOI: 10.1007/s11771-023-5522-2 Corpus ID: 267119944; Research on efficient utilization of high-phosphorus oolitic hematite for iron enrichment and dephosphorization by hydrogen mineral phase transformation

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Investigation of Dephosphorization Reaction by Injecting …

Synopsis : Dephosphorization by injecting lime-based fluxes and iron oxides into hot metal has been investigated extensively including water model test. The followings have been obtained through thermodynamic, kinetic and fluid dynamic studies. (1) The dephosphorization behavior can be divided consistently in terms of consumption of …

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Green and efficient separation of iron and phosphorus from …

When the C/O molar ratio was between 0.5 and 0.9, dephosphorization and iron recovery exhibited marked changes. XRD was used to analyze the mineral composition of the roasted ores at different C/O molar ratios to understand the effect of the reducing atmosphere on the phase conversion without the dephosphorization agent. ...

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Investigation of dephosphorization of brown iron ore …

The above dephosphorization method has achieved acceptable dephosphorization effect, but due to the constraints of environment, production cost and efficiency, mainstream configuration of iron and ...

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Process parameter optimization of Fe-based coating on ductile iron …

Ductile iron finds extensive utilization owing to its cost-effectiveness and favorable mechanical properties, applying it a preferred material for industrial applications, particularly in the marine industry, including valves and pipes [1], [2], [3].Nevertheless, ductile cast iron exhibits the formation of cracks, pores with graphite carbon diffusion, and unevenly …

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Dephosphorization Treatment of High Phosphorus Iron …

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 an economic balance between the total iron yield and dephosphorization efficiency, a screen size of 25 μm was applied in the present investigation ...

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Performance of Low Fluoride Dephosphorization Slag of …

The purpose of the study is to decrease content of CaF 2 in dephosphorization slag. The dephosphorization effects of CaF 2 replaced by B 2 O 3 were investigated. The dephosphorization experiments were carried out at 1450 °C in air atmosphere. The results show that the melting points and dephosphorization ratios …

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