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A way to reduce environmental impact of ladle furnace slag ...

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 ...

The use of ladle furnace slag for the removal of ...

2.4.3 Ladle furnace refining and ladle slag After being tapped from the BOF or EAF, the molten steel produced by the primary processes may undergo further refining to remove additional impurities remaining within the steel, or add allying elements to obtain the required chemical composition and grade of …

ladle furnace slag

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 ...

Slag Modeling for Effective Desulphurization in Ladle ...

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 hydroxide (NaOH), sodium sulfate ...

Ladles & Slag Pots

Slag is a by-product formed in most metallurgical process. During the steelmaking process a large amount of slag is produced, which becomes a source of waste, which in many instances is land filled. Such areas filled with waste materials have become a significant source of pollution. Slag recycling is then becoming important in recent years. Recycling can be an efficient option to reduce such ...

Ladle Furnace

Ladle Furnace Slag in Construction. Ladle furnace reducing slag is a common byproduct in steelmaking of carbon and low alloy steels. After air cooling and weathering over several days, this material is completely ground into fine white particles.

Sustainability | Free Full

The shape of a ladle or slag pot depends primarily on the operational conditions it has to withstand. Thus, the following design criteria must be taken into consideration: Type of furnace that the slag pot will service, Quantity and type of slag generated, Method of handling and dumping the pot, Heat impact during operation,

Effect of Ladle Furnace Slag Composition in Si

II) Introduction to slag fundamentals a) What is slag? b) The functions of slag c) The building blocks of slag d) Slag calculation example e) Slag basicity and optical basicity f) The fluxing effect and the concepts of solidus and liquidus temperatures g) The slag balance h) Slag requirements and a simple slag classification III) Foamy slag fundamentals and their practical application to ...

Chemical, Mineralogical, and Morphological Properties of ...

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 and FAIG.1.2); while the spinel ladle loses most heat per

Control of Slag and Insoluble Buildup in Ladles, Melting ...

furnace ladle slag generated and processed during each 1-year period following the commencement of the continuous process; and 4.2.2. Routine sampling of the electric arc furnace ladleslag by collecting either 5 composite samples from every,000 tonnes (or part thereof) 2

Ladle Furnace Slag as a Sustainable Binder for Masonry ...

This work investigates the effect of slag composition in steel-slag and steel-inclusion reaction kinetics in silicon-manganese killed steels by using FactSage macros to simulate and predict inclusion composition and morphology changes during ladle treatment. Two different conditions of ladle treatment were simulated in regard to alumina and silica content in a basic slag.

Steel Ladle

Jan 17, 2010· The acceptable amount of slag entering the ladle furnace is thus, amongst other things,dependent on the phosphorus level in the slag CVS MAKINA - LF TRAINING - D.E. 23 Basic Metallurgy The crude steel leaving the primary furnace is in general oxidized. The oxygen content being a function of the carbon level. Since there is a relationship ...

CHARACTERIZATION OF LADLE FURNACE SLAG FROM THE …

Ladle furnace slag (LFS) is a solid waste by-product from the secondary stage of steel making process in ladle refining furnace. An extensive suite of engineering and geotechnical tests was undertaken on LFS aggregates to evaluate its potential to use as a road construction material.

[PDF] Fundamentals of Eaf and Ladle Slags and Ladle ...

Properties of top slag are very important for desulphurization in Ladle Furnace (LF) refining. In the present paper, the effect of top slag composition, weight of carry over slag, optical basicity ...

ladle furnace slag recycling,mining machine chile copper mines

et al. (2002, 2003) revealed that ladle slag fines showed signifi-cant cementitious properties in the presence of an alkaline acti-vator, while using an autoclaving process could further promote the hydration of alkali-activated ladle slag fines. However, to date, there is no report of mercury stabilization using LF slag.

Chemical, Mineralogical, and Morphological Properties of ...

Nowadays, the environmental aspect of industrial waste management has got urgent. The reusing of these residues in the civil building is increasing, since all industries have developed a growing concern for the emptying of natural resources. The ladle furnace slag (LDF-slag), a by-product of the secondary refining of steel, is mainly composed of calcium and calcium magnesium silicates.

Heat loss in Ladle furnace

Ladle furnace slag (LFS) is a by-product of a steel plant. As the chemical composition and free lime (f-CaO) content of each batch of slag are significantly different, it is difficult to use the ...

OPTIMIZATION OF LADLE FURNACE SLAG FOR USE AS A ...

Abstract. Ladle furnace slag is a by-product of the steel industry, deriving from the second stage of the production process, which presents some cementitious properties, mainly due to its high CaO content.

Ladle Furnace slag

amount of furnace slag into the ladle is slag skimming in combination with a tilting ladle car equipped with an EMS. At slag raking, the slag will be pushed towards the slag rake side under the electromagnetic force, move the steel upwards on the stirrer side of the ladle and make the slag removal more efficient and thorough. Figure 3.

Steel Refining in a Ladle Furnace

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 …

Stabilization of mercury using waste ladle furnace slag

Abstract. Ladle furnace slag is a by-product of the steel industry, deriving from the second stage of the production process, which presents some cementitious properties, mainly due to its high CaO content.

Materials | Free Full

Regardless of the chemical refining requirements of slag, it is advantageous for the ladle slag to become as fluid as possible immediately upon trapping the metal from the furnace into the ladle[3]. In order to meet these requirements, some prefused materials have been used in ladle furnace. A suitable ladle flux must provide the following

Steel

About Steel Refining in a Ladle Furnace After steelmaking, which is mostly performed in a basic oxygen furnace (BOF) or electric arc furnace (EAF), steel is usually tapped into a ladle where certain additions are made (deoxidation agents, slag formers, certain alloying elements) and then transferred to the ladle furnace …

blast furnace ladle

A circular approach to managing resources that will promote their reuse and recycling is nowadays of crucial importance for a sustainable society. In this regard, the substitution of natural aggregates by steel slag in construction materials represents a promising option. In this paper, the use of Ladle Furnace Slag (LFS) as sustainable filler and fine aggregate for asphalt mixtures is studied.