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(PDF) Ladle Furnace Temperature Prediction Model Based on ...

In ladle furnace, the prediction of the liquid steel temperature is always a hot topic for the researchers. The most of the existing temperature prediction models use small sample set. Today, the precision of them can not satisfy practical

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WO2015114545A1 - Use of ladle furnace slag from al-killed ...

238000009847 ladle furnace Methods 0.000 title claims abstract description 85 USE OF LADLE FURNACE SLAG FROM AL-KILLED STEEL IN SI-KILLED …

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Control of H2S Emissions During Slag Quenching

ladle train of slag is poured over the ... furnace slag and the pit dimensions, heat losses from the sides of the pit are relatively small. Therefore, a one- ... Specific heat (liquid phase) Slag emissivity Natural con-vection coef-ficient Heat transfer to ground 130 (Ib/ftf) 2550 (°F)

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Control of Gas Bubbles and Slag Layer in a Ladle Furnace ...

Physical System — The ladle system simulated in this paper is shown in Figure 2. The ladle inner diameter is 2.85 m, the melt height is 2.80 m and the initial slag layer thickness is 0.10 m. Different positions of the porous plug have been studied. Control of Gas Bubbles and Slag Layer in a Ladle Furnace by Electromagnetic Stirring

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Controlling Slag Defects, Insoluble Buildup in Melting and ...

Jan 29, 2015· Because the walls of the pouring ladle are much cooler than the furnace refractory lining, slag buildup is inevitable. The task of continually maintaining clean pouring ladles requires significant labor, and failure to do so may result in costly casting scrap from slag inclusions.

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Model of Inclusion Evolution During Calcium Treatment in ...

Apr 24, 2018· The coupled inclusion–steel–slag kinetic model is applied to the chemical composition changes in molten steel, slag, and evolution of inclusions in the ladle. The result of calculations is found to agree well with an industrial heat for species in the steel as well as inclusions during Ca treatment.

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Steady mathematical model of ladle furnace heat work

Fig. 3 Example of the total heat loss components of the ladle furnace. 4 Conclusion Calculations show that the steady heat balance model of a ladle furnace is usable in practice. It is necessary that the adjustable parameters in the model were adapted to specific conditions of the concrete ladle furnace.

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What Is the Ladle Refining Furnace? - Hani Tech

Aug 05, 2020· Ladle furnace is one of the main equipment in secondary refining. Main functions of the ladle refining furnace are as follows: 1. Heat up and heat preservation of molten steel.The new heat energy can be obtained by arc heating, which can not only add alloy and adjust composition, but also add slag to facilitate deep desulfurization and ...

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Refining Slag for the LF Refining Furnaces - Rongsheng ...

Use of Refining Slag During the refining process of the LF furnace, the ladle is injected with a mixed slag prepared with a special ratio. It can be melted into liquid slag under the heating treatment of electric arc. So as to achieve the purpose of refining steel liquid, thermal insulation and so on. Put the refined slag into the ladle before ...

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Treatment and characterisation of electric arc furnace ...

Oct 01, 2007· Blast Furnace Slag (BFS) from the crude or pig iron production in blast furnace. Steel slag from a Basic Oxygen Furnace (BOF) and the Electric Arc Furnace (EAF). Ladle refining slag from the steel refining processes in the ladles. The blast furnace slag after granulation and grinding finds extensive use in cement and concrete.

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A Study on the Thermal State of Steelmaking Ladles

Supplement 4: "Fluid flow and heat transfer in the ladle during teeming" Björn Glaser, Mårten Görnerup and Du Sichen "Editor's Choice" Steel Research International 82 (2011), No. 7, pp. 827-835 Supplement 5: "The effect of the slag layer on fluid flow and heat transfer in a teeming ladle" Björn Glaser

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Utilization Optimization of Ferroalloys during Steelmaking ...

Oct 08, 2019· Ferroalloys are added to liquid steels in the ladle for a variety of reasons such as (i) to deoxidize the liquid steel by reacting with O2 and forming oxides which are to be absorbed into the slag, (ii) to adjust the final chemical composition of the steel, and (iii) to achieve the specified mechanical properties in the steel by modifying ...

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Thermal properties and friction behaviors of slag as ...

Aug 01, 2018· The specific heat capacity and thermal diffusivity of the slag samples were measured by laser flash analysis (LFA) 467 from Netzsch in RT-500 °C. The LFA467 offered high precision of the heat capacity (experimental error around 3%) and thermal diffusivity (experimental error around 5%).

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UG-Mat Steel Slag | Recycled Materials Resource Center

These slags are combined with any carryover of furnace slag and assist in absorbing deoxidation products (inclusions), heat insulation, and protection of ladle refractories. The steel slags produced at this stage of steel making are generally referred to as raker and ladle slags. Figure 1. Overview of slag production in modern integrated steel ...

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Advances in chemical and physical properties of electric ...

Five minerals are examined, namely perlite, ladle furnace slag, bauxite, diatomite and olivine. Measurements of specific weight are accompanied by X-ray diffraction (XRD) and fluorescence (XRF) analysis and scanning electron microscopy spectral images.

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Method of ladle steelmaking and product produced thereby ...

A method of refining steel in the ladle using a low melting point slag is disclosed. Both ELS and resulfurized steels are subjected to the simultaneous effect of a vacuum and a purging agent, preferably an inert gas, to lower the H 2 content into the flake-free range irrespective of the chemistry of the steel, and heat is added via AC arcs from non-consumable electrodes at a temperature only ...

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Development of Refractory Materials for Ladle Lining - RS ...

Sep 30, 2020· In the order of commissioning, they are 120 t ladle, 150 t ladle, and new 150 t ladle, of which the new 150 t ladle is modified from the original 40 t ladle. The refractory materials used in different ladles are different due to different specific production requirements. Steel-Ladle Refractory Lining. 40 t ladle

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HEAT RECOVERY FROM MELTED BLAST FURNACE SLAG …

Blast furnace slag is a byproduct of iron making. For 1000 kg of iron, approximately 290 kg of slag is formed. When the melted slag leaves blast furnace, its temperature is about 1800 K. In Japan, approximately 24 million tons of blast furnace slag is formed annually (1). The heat of melted slag produced annually in Japan is

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Prevention of Ladle Furnace Slag Disintegration Through ...

Jan 05, 2021· 10%· Ladle refining is a popular secondary metallurgy process and plays a vital role in achieving the desired chemistry and temperature during steelmaking. The slag produced after ladle refining mostly contains dicalcium silicate (C2S). The presence of high C2S in slag leads to the disintegration of slag into fine powder during cooling due to phase transformation of C2S.

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Additional slag materials may be added at the ladle ...

Additional slag materials may be added at the ladle furnace if the slag cover. Additional slag materials may be added at the ladle. School McGill University; Course Title MATERIAL 456; Uploaded By rabbit32. Pages 27 This preview shows page 10 - 13 out of 27 pages. ...

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Solar Energy Materials and Solar Cells

of two electric arc furnace (EAF) slag samples were studied. In TES system, as heat storage material, slag will meet with high temperature and low temperature environment. The wear resulted from heat expansion and cold contraction of slag with storaging and releasing energy process was addressed. The results revealed that slag is a

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Physical Ladle Tracking - AustralTek

LADLE FURNACE CASTER AREA LADLE IN CRANE "A" ... and from slag falling from top of the ladle. The armor is manufactured in carbon steel with several layers of insulation on the internal side where the RFID tag is located. 2000°F ... Based on the armor specific heat, dividing Q/̇ will give the time needed to reach the ladle wall ...

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(PDF) Heat loss in Ladle furnace | IRJET Journal ...

The hot face of ladle is at high temperature; hence radiation heat transfer is very important in calculating net TABLE.1.1. Physical and thermal properties of Ladle walls, heat losses. In case of empty ladle, the radiation exchange Molten steel and Slag takes place between conical surface of the ladle, bottom surface of the ladle and at the top.

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Slag - Wikipedia

Basic slag is a co-product of steelmaking, and is typically produced either through the blast furnace - oxygen converter route or the electric arc furnace - ladle furnace route. To flux the silica produced during steelmaking, limestone and/or dolomite are added, as well as other types of slag conditioners such as calcium aluminate or fluorspar .

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Improvement In Ladle Technology For Conservation Of Heat ...

specific casting advantages, lowering in tapping temperatures and associated cost savings occurred by minimizing heat ... Tapping of the steel melt from the furnace into the ladle is accomplished by a very rapid drop in the melt superheat. The ... the slag layer & heat loss to the ladle walls as the ladle is filled. Once the ladle is full, the ...

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EFFICIENT USE OF ENERGY IN A ELECTRIC ARC FURNANCE BY …

Electric arc furnace (EAF) is a furnace that heats charged material by means of an electric arc. An electric arc furnace is heated up to 1600oC by electricity that is generated through electrodes [7]. Generally, two types of a furnace (a) Indirect arc furnace- In the indirect-arc furnace, an arc is struck between two carbon electrode and heat is

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12.4 Ferroalloy Production - EPA

Chemistry adjustments may be necessary after furnace smelting to achieve a specified product. Ladle treatment reactions are batch processes and may include metal and alloy additions. During tapping, and/or in the reaction ladle, slag is skimmed from the surface of the molten metal.

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Ladle Furnace - an overview | ScienceDirect Topics

The required heating energy depends not only on the desired temperature increment but also on the amount and thermal properties (specific heat) of the alloys which are added in the ladle. Except for heating ladle furnace is an excellent place to make desulfurization with slag, Ca-treatment, and other alloying and trimming additions.

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Iron Electric Ladle Refining Furnace, Max Temperature ...

The required heating energy depends not only on the desired temperature increment but also on the amount and thermal properties (specific heat) of the alloys which are added in the ladle. Except for heating ladle furnace is an excellent place to make desulfurization with slag, Ca-treatment, and other alloying and trimming additions.

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Analysis and optimization of fume extraction from a ...

discussed here. In order to account for the case where the second slag ladle is full, an additional heat source was added to the relevant configurations. To model the fume from various sources, surface heat transfer sources were specified on the relevant geometry. These heat sources are shown in Figure 1.

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Materials | Free Full-Text | Use of Ladle Furnace Slag and ...

Municipal solid waste incineration fly ash (MSWIFA) is a hazardous by-product of waste incineration. The objective of this research is to encapsulate the chloride in MSWIFA and to develop a utilizable construction material using MSWIFA, ground granulated blast-furnace slag (GGBFS), ladle furnace slag (LFS), and gypsum. A secondary objective of the work is to explain the hydration and ...

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CivilEng | Free Full-Text | Thermal Analysis of Mass ...

The specific heat for the cementitious material was calculated by taking a weighted average between the Portland cement and GGBFS. The specific heat of cement and GGBFS are 740 J k g K and 640 J k g K [29,30], respectively. The specific heat (C c e m, C s, C a, C w) for the cementitious material, fine aggregate, larger aggregate, and water were ...

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Process and additive for the ladle refining of steel ...

A solid ladle metallurgy furnace additive for use in a treating molten steel in a ladle metallurgy furnace comprising from about 10% to about 90% by weight of a solid recycled ladle metallurgy furnace slag material and from about 10% to about 90% by weight of a raw material selected from the group consisting of: a calcium oxide source; soda ash ...

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High Temperature Rheological Characteristics of Iron and ...

(BOFS), electric arc furnace slag (EAFS) and ladle furnace slag (LFS) [21,51-54]. This is summarized as shown in Figure 1 [54]. Granulated blast furnace slag is produced by quenching mol-ten furnace slag with high-pressurized water. Blast furnace slags cooled in air constitute a crystallized material used as raw material instead of sand in the ...

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Missouri University of Science and Technology Scholars' Mine

oxide on the alloy surface. Important sources of oxygen are furnace slag and air contact (slag carryover and air entrainment during tapping). 2. Other sources of oxygen include slag remaining in the furnace (or ladle) from previous heats, oxygen dissolved in the metal, air

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Specific Heat of Solids - Engineering ToolBox

The specific heat of some commonly used solids is given in the table below.. For conversion of units, use the Specific heat online unit converter.. See also tabulated values of specific heat of gases, food and foodstuff, metals and semimetals, common liquids and fluids and other common substances as well as values of molar heat capacity of common organic substances and inorganic substances.

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Ground granulated blast-furnace slag - Wikipedia

Ground-granulated blast-furnace slag (GGBS or GGBFS) is obtained by quenching molten iron slag (a by-product of iron and steel-making) from a blast furnace in water or steam, to produce a glassy, granular product that is then dried and ground into a fine powder.Ground-granulated blast furnace slag is highly cementitious and high in CSH (calcium silicate hydrates) which is a strength enhancing ...

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Magnesia Carbon Brick, MgO-C Bricks, Magnesia Carbon ...

Magnesia carbon brick is widely used in Electric Arc Furnace sidewalls, converters and ladle furnace slag lines. MgO-C Bricks has excellent corrosion resistance together with good thermal shock properties. Magnesia carbon brick offers good oxidation resistance due to use of high purity flake graphite.

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Steel Teeming Ladle and its Refractory Lining – IspatGuru

Nov 08, 2014· After each heat, the entire gate system must be cleaned of residual metal and slag by oxygen lancing and granular refractory filler installed before the next heat. This filler (ladle sand) prevents liquid steel from entering the gate system before the gate is …

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