specific heat of ladle furnace slag

Recycling of ladle furnace slags

Recycling of ladle furnace slags Abstract Ferrous industry slag is waste product of all steelmaking manufactures. These materials should be reused or stocked. There is abundant literature on the subject of reuse and recycling of blast furnace(BF), basic oxygen ...

furnace heat

Slag Composition: The composition of furnace and ladle slag is often very complex. The slags that form in electric furnace melting result from complex reactions between silica (adhering sand and dirt from casting returns), oxides from scrap, other oxidation by

furnace heat

The electric power in LF is quite moderate (compared with EAF for steel melting) providing a heating rate ~ 5 °C min − 1 max. 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.

Influence of mineralogy on the hydraulic properties of …

 · Abstract. The present study is aimed at investigating the hydraulic characteristics of ladle furnace slag (LFS), under the pretence of using LFS as a cement substitute in certain applications. Furthermore, LFS has been considered as a possible activator in a blend containing 50% LFS, and 50% ground granulated blast furnace slag (GGBFS).

Review of Our Investigations on Ladle Furnace | …

 · Ladle furnace (LF) is a key unit during secondary steel making, since final adjustment of temperature and composition of molten steel in a cost effective manner is to be mostly achieved here. Further, to meet shop logistics for sequence casting, processing time in the LF is to be within specific range. Tata steel desired some R&D work on the LF ...

(PDF) Fast method for slag characterization during ladle …

The system has been trained with more than 600 real slag samples taken from ladle furnace at different ArcelorMittal steel plants. In order to cover the whole slag oxidation process, three slag ...

Value Paper Authors: Ulf Sand, Hongliang Yang, Jan-Erik Eriksson, …

4 Fluid Dynamic Features of Combined Gas and Electromagnetic Stirring Water model. The ladle furnace water model experimental set-up consists of a cylindrical vessel of 1.5 m height and 1.0 m internal diameter, filled with water until 0.82 m. A porous plug is

(PDF) Use of ladle furnace slag containing heavy metals …

The ladle furnace slag or re fi ning slag, referred to as the ladle slag (LS) there after, is a by-pr oduct gene rated from the st eel re fi ning s tages when the stee l is being desu lfurized ...

furnace heat

 · The heat transference coefficient by wall-air convection has values from 2.76 W/m2 C to 12.01 W/m2 C, ... Ladle furnace slag is produced through the addition of lime and dolomitic limestone in an electric furnace during the secondary refining of steel and ...

(PDF) FUNDAMENTALS OF EAF AND LADLE SLAGS AND …

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 ...

What Is the Ladle Refining Furnace?

 · 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 deoxidization of molten steel.

(PDF) Characterization of Ladle Furnace Slag from …

A promising type of steel slag for applications is the ladle furnace (LF) slag, which is also known as the basic slag, the reducing slag, the white slag, and the secondary refining slag.

Hydration properties of ladle furnace slag powder …

 · Ladle furnace slag, the waste from steelmaking industry can be recycled. • Rapidly air cooled ladle furnace slag is a rapid hardening binder. • Rapid air cooling method prevent expansion of the steel slag. • Rapidly air cooled ladle furnace slag produce hydrogarnet

Ladle Furnace Slag in Construction | Request PDF

Finally ladle furnace (LF) slag (white), obtained by processing by refining in either a ladle furnace (LF) or specific converters for high-alloy steel, can be used to improve soil stabilization ...

Characterization of Ladle Furnace Slag from Carbon Steel …

Heat Loss In Ladle Furnace IRJETInternational Research May 01 2008· Used refractories promote higher heat loss and this is evident in the shell temperature which is about 100 ''C hotter than a ladle with a new refractory. 14 Journal of Iron and Steel Research International Vol. 15 The temperature of the wear refractory in Fig. 3 is in its back but the temperature in its front is the slag ...

(PDF) Ladle Furnace Temperature Prediction Model Based …

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

Recycling of ladle furnace slags

to 10-40 mm size. 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 decreased, the desulphurization behavior of slag did not changed. Moreover, during six months

[PDF] Industrial Ladle Furnace Slag Composition Analysis …

Ladle furnaces (LFs) are used to fine-tune the chemical composition of the steel before casting. The impurities from the steel are accumulated to slag that floats on top of the molten steel due to density difference. The slag has an important role in steelmaking, since the nonmetallic impurities can cause harmful inclusions into the steel.1) The viscosity and inclusions are usually modified by ...

Control of Gas Bubbles and Slag Layer in a Ladle Furnace by …

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 Several new operational modes for refining steel in a ladle furnace are

(PDF) Kinetic Model of Steel Refining in a Ladle Furnace

A ladle furnace operates with a highly reducing slag provided the slag carry over is properly controlled; however, this seldom occurs. In addition, argon injection is also employed to ...

Prevention of Ladle Furnace Slag Disintegration Through …

Abstract 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. The adverse impact ...

Prevention of Ladle Furnace Slag Disintegration Through …

 · During the industrial trials, different additives were added on the top of LF slag, after achieving the bath temperature. This was done to minimize the losses due to arcing in the ladle furnace. After addition of the additives, Argon was purged through the bottom porous plug for 3–4 min to help in easy mixing of slag.

(PDF) CHARACTERIZATION OF LADLE FURNACE SLAG …

For this purpose, samples of ladle furnace slag, taken from the regular production process in the CMC Sisak d.o.o. between October 2010 and October 2011, were subjected to a series of tests.

[PDF] Use of Ladle Furnace Slag and Other Industrial By …

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 ...

furnace heat

 · In this paper, the thermal stability, specific heat capacity, thermal conductivity and microstructures 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.

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

MATHEMATICAL SIMULATION AND EXPERIMENTAL RESEARCH OF THERMAL WORK OF A STEELMAKING LADLE

Fig. 1. Simplified shape of ladle lining incl. of slag layer and of cover Fig. 2. Dependence of heat transfer coefficient ALFA by convection and by conduction from (W m ) 1 1 1 1 1 4 2 1 4 2 2 2 12 4 1 1 1 o 11 1 1 1,result ⋅− − −⋅⋅⋅− − − − − −

Investigation of thermal properties of blast furnace slag …

 · Utilising the waste heat energy from the slag to contribute to heating the pig iron would achieve better energy efficiency and sustainability of the blast furnace steelmaking process. To improve energy use, it is necessary to understand behaviour of the slags with different compositions and at varying temperatures.

PDF superior Ladle furnace slag in asphalt mixes

PDF superior Ladle furnace slag in asphalt mixes de 1Library The behavior of both the LFS specimens and the reference specimens with chloride ion percentages of 1.2% and 2.0% was similar, staying at corrosion rates in the active stat[r]

HEAT RECOVERY FROM MELTED BLAST FURNACE SLAG USING …

HEAT RECOVERY FROM MELTED BLAST FURNACE SLAG USING FLUIDIZED BED Tadaaki Shimizu1, Daisuke Haga1, Go Mikami2, Takayuki Takahashi 2, Kenji Horinouchi2 1 Department of Chemistry and Chemical Engineering, Niigata University 2 Graduate School of Science and Technology, Niigata University

WO2015114545A1

239000002893 slag Substances 0.000 title claims abstract description 206 229910000655 Killed steel Inorganic materials 0.000 title claims abstract description 154 238000009847 ladle furnace Methods 0.000 title claims abstract description 85 calcium method

Treatment and characterisation of electric arc furnace …

 · The specific gravity of the slag as determined by helium pycnometer is 3.72 as against 3.65 determined by a specific gravity bottle method using kerosene. The Bond Work Index of the slag is 27kWht -1 which is somewhat smaller than the values 29-30kWht -1 …