slag formation steelmaking induction furnace


STUDIES ON DIRECT REDUCED IRON MELTING IN INDUCTION FURNACE

furnace steelmaking. 3. DRI MELTING FOR STEELMAKING India is the only country in the world using induction furnaces on a large scale for production of steels (15.5%). For smoothening of the melting operation, periodical removal of slag is required as it gets

What is the difference between electric arc furnace and …

 · Induction furnace is cold slag, while arc furnace is hot slag. The nitrogen content of eAF steel is higher than that of induction furnace. 3. The harvest rate of alloy elements smelted by induction furnace is higher than that of arc furnace, because elements volatilize and oxidation loss are high under high arc temperature. 4.

OVERVIEW OF THE STEELMAKING PROCESS

Electric Arc Furnace Steelmaking Continuous casting Design by Blisscommunication / Cover photo: ThyssenKrupp Steel / Tubes photo: Salzgitter The process shown above is illustrative only and is not designed to show the steelmaking process in detail.

Slag Splashing in a Basic Oxygen Furnace under Different Blowing …

furnace for steelmaking is analyzed here using two-dimensional transient Computational Fluid Dynamics simulations. ... For a time of 0.4 s, Figure 2 shows that molten slag exhibits an absence of drop formation. For full combined blowing, bubbles of nitrogen in ...

Recycling of induction furnace steel slag in concrete for …

 · In the present investigation, induction furnace (IF) steel slag as coarse aggregate with 0%, 20% and 40% replaced concrete specimens of size 150 × 150 × 150 mm was prepared as an initiative to utilize iron-rich IF steel slag. The casted concrete specimens were cured for 28 days at room temperature (28 °C) in freshwater, and the obtained compressive strength is 22.5, 24.0 and 29.2 N/mm2 ...

Melting behaviour of sponge iron in

Iron in Induction Furnace Arrangements for continuous melting however faces the difficulty of cooling of the slag and formation of crust. Therefore, arrangements were developed to overcome the difficulties of continuous melting of sponge iron at NML. The

Chemical characteristics of iron and steel slag : NIPPON …

Other components of blast furnace slag include alumina (Alsub>2O 3) and magnesium oxide (MgO), as well as a small amount of sulfur (S), while steelmaking slag contains iron oxide (FeO) and magnesium oxide (MgO). In the case of steelmaking slag, the slag contains metal elements (such as iron) in oxide form, however because the refining time is short ...

MARINE DRIVE PROTECTION BY FORMATION OF SEA FOREST …

slag which produced from 140 numbers of steel making plants in Bangladesh. [BRMA, 2014].This paper presents an assessment on the byproduct namely steelmaking slag resulting from scrap metal processing at induction furnace, Ladle Refining Furnace

Industrial uses of slag—The use and re-use of iron and …

subsequently refined in a steelmaking furnace. During ironmaking as well as during steelmaking, significant amounts of slag are produced. Two decades ago, more than 13 m tonne of blast furnace slag and 4 m tonne of steelmaking slag per annum were

MgO modification of slag from stainless steelmaking

steelmaking was re-melted in a laboratory induction furnace, together with olivine and calcinated dolomite, to investigate the prevention of disintegration by increased MgO content of the slag with small changes in CaO to SiO

MARINE DRIVE PROTECTION BY FORMATION OF SEA FOREST CREATION UTILIZING BY-PRODUCT SLAG OF STEELMAKING …

slag which produced from 140 numbers of steel making plants in Bangladesh. [BRMA, 2014].This paper presents an assessment on the byproduct namely steelmaking slag resulting from scrap metal processing at induction furnace, Ladle Refining Furnace

Analysis of Induction Furnace Slag of Ferrous Foundry

Steelmaking Slag - an overview | ScienceDirect Topics

Generation of iron and steel slag : NIPPON SLAG …

Steelmaking slag is generated by the process that turns pig iron produced by a blast furnace into tough and highly workable steel. Converter slag is the oxidized material that is generated when lime and other auxiliary materials are added and oxygen is blown onto the pig iron in order to remove carbon, phosphorous, sulfur, and other components from the pig iron and refine it to produce strong ...

A Study on Selected Hot-Metal and Slag Components for Improved Blast Furnace Control

the furnace.3,4 Consequently, the ability to take representative metal and slag samples during tapping is an important issue for the operation of the blast furnace, as …

Effect of Slag Composition on the Kinetics of Formation of Al2O3 …

Kinetics of both slag/metal reactions and metal/inclusion reactions were investigated experimentally using 20kg vacuum induction furnace in order to clarify the mechanism of the formation of MgAl 2O 4 spinel inclu-sions in aluminum killed ferritic stainless steel

Control of Slag and Insoluble Build-up in Melting Furnaces

Figure 1: Typical Slag Build Up in a Coreless Induction Furnace The areas of slag deposits are at a much lower temperature than the center of the furnace walls. Slag also is deposited in areas midway down the crucible lining, where insufficient metal turbulence

Unique functions of slags in steelmaking

Slag formation within ferrous burden materials affects the cohesive zone and the performance of the blast furnace. Recent theoretical and experimental findings on this topic are presented. In the electric arc furnace, foamed slags are used to allow for higher power

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

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

NPTEL :: Metallurgy and Material Science

Steelmaking Fundamentals Types of steels, History of modern steelmaking and Indian scenario Modern steelmaking Science base of Steelmaking Slag in Steelmaking Physico-chemical properties of slag Steel Making Reactions: Oxidation of Iron and Silicon

12.5 Iron And Steel Production

12.5.1.6 Steelmaking Process — Open Hearth Furnaces - The open hearth furnace (OHF) is a shallow, refractory-lined basin in which scrap and molten iron are melted and refined into steel. Scrap is charged to the furnace through doors in the furnace front. Hot

UDC 669 . 054 . 82 : 669 . 184 . 244 . 66 Processing and Reusing Technologies for Steelmaking Slag

blast furnace slag contains Al 2 O 3, MgO, and S, and steelmaking slag contains iron oxides (FeO, Fe 2 O 3), MnO, P 2 O 5, etc. Steelmaking slag includes the following: slag produced in the hot-metal pretreatment processes (desiliconization, dephosphoriza

Chemical, Mineralogical, and Morphological Properties of …

 · Steel slag is a byproduct of the steelmaking and steel refining processes. This paper provides an overview of the different types of steel slag that are generated from basic-oxygen-furnace (BOF) steelmaking, electric-arc-furnace (EAF) steelmaking, and ladle-furnace steel refining processes. The mineralogical and morphological properties of BOF and electric-arc-furnace-ladle [EAF(L)] slag ...

System assessment of recycling of steel slag in converter steelmaking…

The dephosphorization experiments were conducted in an induction furnace. In addition, theoretical analysis of the detailed heat expenditure items of dephosphorization agent was carried out. The heat enthalpy of unit mass slag was measured by differential scanning calorimetry.

Steelmaking Slag

 · Compared to blast-furnace slag, steelmaking slag usually contains a much higher amount of lime, which can cause formation of dicalcium silicate, 2CaO-SiO 2 (sometimes formulated as 2CaO·SiO 2), which can cause disintegration upon cooling due to a volume.

A Study of the Behavior of Foaming Slag in Steelmaking

Foaming slag plays a major role in the steelmaking industry, and can be found in both electric arc furnaces (EAF) and basic oxygen furnaces (BOF). The foam enhances the kinetics of the reactions in the process at the same time as it protects the lining2

A STUDY ON SPINEL FORMATION AND SINTERING BEHAVIOR OF …

producing neutral linings of induction furnaces used in steel industry. This type of lining has very high melting temperature, high strength, high hardness, and relatively high resistance to slag attack. In induction furnace applications chemical durability 2 O

An Overview of Utilization of Blast Furnace and …

 · Reportedly, 150-200 kg steelmaking or high furnace slag is produced per one ton of produced raw steel As reported in Turkey†s Slag Report annual slag production of Turkey has reached 5.4 million tons as of year 2014 [5].

Steelmaking in Induction Furnace – IspatGuru

 · The main raw materials for steelmaking in induction furnace are (i) steel scrap, (ii) iron scrap or/and pig iron, (iii) sponge iron, (iv) carburizer, and (v) additives. Out of these the first three are metallics. Dirty or contaminated scrap tends to deposit a slag layer on the

Synopsis: In iron and steelmaking the composition of slags is essential for technological FURNACE …

In blast furnace, primary slag with various FeO contents depending on burden composition is formed. In steelmaking, the foaming slag can be formed by using scale as steel-plant waste material. In stainless steelmaking various chromites1.

Analysis of Induction Furnace Slag of Ferrous Foundry

product originating in these processes are furnace slag. Blast furnace slag and cupola furnace slag originates from melting of gangue parts of metal bearing materials, slag forming additions and coke ash. In general, slags are compounds of oxides of

Thermodynamic calculation on the smelting slag of …

 · Thermodynamic calculation on the smelting slag of direct recycling of electric arc furnace stainless steelmaking dust was presented. An induction furnace was used to simulate electric arc furnace smelting to recover the metals from the dust. The elements of iron, chromium and nickel in the ingot and the components of metal oxides in the slag were analyzed. The thermodynamic model for …

Induction Furnace and Steelmaking – IspatGuru

 · Induction furnace is a type of furnace for steelmaking which uses electrical energy for its operation. Induction furnace (IF) steelmaking is one of the two electrical steelmaking processes. The other process for electrical steelmaking uses an electric arc furnace (EAF).

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