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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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(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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Heat loss in Ladle furnace

Heat loss fluxes with spinel as working refractory in wall A comparison between the two figures shows that the alumina ladle loses more heat per unit area and time to the top region of the wall (Side3), which is slag-line brick having greater heat conductivity than alumina, (Fig. 1.1

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Recycling of ladle furnace slags

of ladle furnace slags as a part of ladle fluxes can be considered as an economical recovery for these covering is required to provide specific chemical and physical functions. The slag Results had shown that the addition of ~200 kg/heat of LF slag does not alter the ladle slag composition significantly. Although the basicity of slag

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Ladle Slag an overview ScienceDirect Topics

Eloneva (5) performed calcium extraction experiments with blast furnace slag, desulfurization slag, ladle slag, and steel converter slag, as mentioned earlier.From blast furnace slag and ladle slag at maximum, 20% of the calcium was extracted with various solvents, while from desulfurization and steel converter slags over 50% extraction was obtained.

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Use of ladle furnace slag containing heavy metals as a

Feb 25, 2020 Electronic address: [email protected] The disposal of ladle furnace slag (ladle slag, LS) containing traces of heavy metals produced during steelmaking has become an environmental issue. The use of LS as a binding material in civil engineering is a potential solution. In this context, this study firstly attempted to activate LS with sodium

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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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Prevention of Ladle Furnace Slag Disintegration Through

Jan 05, 2021 高达10%返现 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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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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Improvement In Ladle Technology For Conservation Of

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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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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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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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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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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Recycling Ladle Furnace Slag as Flux in Steelmaking: A

Sep 16, 2019 Ladle Furnace Slags. Most LF slags contain CaO, MgO, SiO 2, and Al 2 O 3 as major constituents with minor quantities of FeO, MnO, P 2 O 5, and TiO 2.The chemical composition varies depending on operating parameters and killing process. Compositions of LF slags from various plants categorized based on alumina content are listed in Table 3.Mineralogical composition of LF slag

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LADLE FURNACE AND SECONDARY METALLURGY TRAINING PREPARED

Jan 17, 2010 Type and power of stirring Ladle furnace geometry. Temperature, °C CVS MAKINA LF TRAINING D.E. 75 Heating The electric arcs are immersed in a slag which absorbs a large part of the heat and transfers it to the metal bath.The slag is superheated 50-

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Behavior of Crystallization on a Continuous Solidification

specific heat capacity, a value approximating a straight line was used for the density, and the value reported by Kang et al.17) was used for thermal conductivity. 3. Experimental Results 3.1. Condition of Experiment Figure 3 shows the condition of production of plate-shaped solidified slag in the continuous blast furnace slag solidifica-tion

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(PDF) FUNDAMENTALS OF EAF AND LADLE SLAGS AND LADLE

FUNDAMENTALS OF EAF AND LADLE SLAGS AND LADLE REFINING PRINCIPLES. Download. Related Papers. Steelmaking and Refining Volume AISE 1998. By stefani zahro. Recycling MgO-C Refractory in the EAF of IMEXSA. By Mostafa Nassar. Chapter 2 Fundamentals of Iron and Steelmaking. By rahul sarkar.

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Nupro Corporation Process Tech, Slag Detection, and

Slag carry over from ladle to tundish has a serious effect on casting operations, with negative impact on yield, quality and safety. Nupro Corporation has applied expertise in metallurgy, vibration analysis and software design to the development of the SlagTracker, a reliable, real time Slag/Vortex Detection System customized to meet your

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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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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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Study on The Thermal Properties of Concrete Containing

Study on The Thermal Properties of Concrete Containing Ground Granulated Blast Furnace Slag, Fly Ash and Steel Reinforcement Bekir Erdem Bas In this study, the thermal and mechanical properties of two types of concrete were measured. The first type contained ground granulated blast furnace slag, and the second type contained Class F fly ash.

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Ground granulated blast-furnace slag

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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Improvement In Ladle Technology For Conservation Of

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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Study and Measurements of Waste Heat Recovery of Slag in

The slag produced in an ore refining or smelting process of a blast furnace, is almost 30 % of metal produce, and at 0a temperature @ 1150 C. temperature is 1500 0C and that Specific heat of slag is 0.24 KJ/Kg0C, ladle available for collecting slag, etc. The report of Kolhapur foundry sector is studied and decided the visit plan

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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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Study on The Thermal Properties of Concrete Containing

Study on The Thermal Properties of Concrete Containing Ground Granulated Blast Furnace Slag, Fly Ash and Steel Reinforcement Bekir Erdem Bas In this study, the thermal and mechanical properties of two types of concrete were measured. The first type contained ground granulated blast furnace slag, and the second type contained Class F fly ash.

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MATHEMATICAL SIMULATION AND EXPERIMENTAL

Qheating heat supplied by additional heating of steel, Qlining heat loss through ladle lining, Qslag heat loss trough slag layer, Qstream heat dissipated from the steel stream during tapping, Qinert heat loss at inert gas blowing, Qadd. heat loss due to introduction of additions. steel ()steel ( C) t =f τ ∆t =f τ! (2, 3)

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Heat Recovery Process from Packed Bed of Hot Slag Plates

These slag plates were reheated with a steel container in an electric furnace to T 0 [K], and were then charged into a slag chamber having an inner diameter of Φ300 mm. After charging the slag plates, air was blown from holes in a perforated plate at the bottom of the heat recovery chamber at

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The Potential of Ladle Slag and Electric Arc Furnace Slag

Slag A is an electric arc furnace type slag, while Slag R is a ladle furnace basic slag produced in the secondary stage of refining, when the steel is desulfurized. Due to these differences in production, the content of elements varies; for example Slag A has a higher content of SiO 2 and Al 2 O 3 than Slag R, but a lower content of CaO and MgO.

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Behavior of Crystallization on a Continuous Solidification

specific heat capacity, a value approximating a straight line was used for the density, and the value reported by Kang et al.17) was used for thermal conductivity. 3. Experimental Results 3.1. Condition of Experiment Figure 3 shows the condition of production of plate-shaped solidified slag in the continuous blast furnace slag solidifica-tion

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Potential methods of measuring the stirring intensity

understand the gas flow in microscopic size because of the heat and the opaque ladle furnace [6] [7] [8]. Hence, it is significant for steel corporations to understand the effect of the the knowledge of a specific gas amount entering the ladle furnace. However, the models do known as the main slag producer, between the charges. In

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METALLURGICAL USES FLUXES FOR METALLURGY

tension, conductivity, specific heat, density, or chemical properties to effect the desired task. In addition to absorbing impurities from the metal, the purposes of the slag are to thermally insulate the metal bath, protect the molten metal from the atmosphere, and control the chemical potential of the system. Several excellent references on

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Thermal calculation of a furnace

The temperature of the fluid at the right upper corner is 300 K. The walls of the oven are made of 10 cm steel. The material constants for steels are: heat conductivity,specific heat and density . The material constants for air are : specific heat and density . The convection coefficient is . The dimensions of the furnace are (cube).

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University of Wollongong Research Online

A furnace is used to heat the sample to the desired temperature. There are numerous models available to calculate the thermal diffusivity from the temperature transient of a single layer sample. 3-7 . Making a thermal diffusivity measurement of a slag material is more complex, because the liquid oxide is held in a measurement cell.

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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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