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Utilization of steelmaking slag for carbon capture and

2021-11-16  The carbonated slag consisted of mineral phases, namely, calcite and dolomite. The results demonstrated the sequestration potential of Indian steelmaking slag with flue gas. Carbonation of steelmaking slag with flue gas poses to be a promising option for the development of carbon capture and storage technology in the country.

Determination of Area Fraction of Free Lime in

2020-8-6  Areas with high intensity of Ca Kα lines (Figure 2(g)), such as areas 1 and 2 in Figure 2(a), corresponded to f-CaO because their compositions (shown in Table II) were close to that of f-CaO dissolving FeO and MnO in previous reports.[36,37,38] Although we previously reported that f-CaO in steelmaking slag samples synthesized from reagents

Slag Foaming in an Electric Arc Furnace

Slag foaming in electric arc furnace (EAF) steelmaking is critical for high productivity. The slag foam protects the refractories from the high intensity arc allowing for high power input and productivity. In the slag foaming process, carbon is injected into the slag, reacts with FeO in the slag producing CO, which foams the slag. The reaction

Effect of Reheating and Quenching on the

Determining free lime content in steelmaking slag is crucial for its safe reuse in road construction. A simple method has been recently developed to rapidly derive this value via cathodoluminescence (CL) imaging of steelmaking slag, previously quenched from 1,000°C to room temperature, according to the illuminated areas corresponding to free lime (luminescence peak at 600 nm).

Basic Oxygen Steelmaking Slag: Formation, Reaction, and

2021-8-10  Basic oxygen steelmaking (BOS) slag, a product of hot metal element (e.g., Si, Mn, Fe, P) oxidation and flux (e.g. lime, dolomite) dissolution, plays a critical role in the production of high-quality crude steel, although its behavior inside the BOS vessel (formation and reaction with metal droplets and gas) is still not clear and its recycling has always been challenging.

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

Slag Splashing: simulation and analysis of the slags

2019-11-1  In this paper, a Slag Splashing process cold simulation is carried out, focusing on a case study of an LD converter from Ternium Brasil Company, located in Rio de Janeiro. The cold physical simulation showed the effect of solids fraction and viscosity on slag projection intensity, evidencing how the coating is affected.

Recycling of steelmaking slag fines by weak magnetic

2014-11-1  The steelmaking slag fines can include desulfurization (DeS) slag fines, basic oxygen furnace (BOF) slag fines, electric arc furnace (EAF) slag fines and ladle metallurgy furnace (LMF) slag fines. Low iron grades, high impurity concentrations and inappropriate particle sizes are major barriers for recycling of the steelmaking slag fines back

and Simple Identification of Free Magnesia in

2019-10-30  Reuse of steelmaking slags is important for the effective use of natural resources. Free magnesia (f-MgO) in steelmaking slag may cause serious problems because of a hydration reaction followed by expansion when it is reused for road construction. We present a promising method to identify f-MgO that causes volume expansion rapidly by investigating cathodoluminescence (CL) images and

Effect of Reheating and Quenching on the

Request PDF On May 17, 2021, Susumu Imashuku and others published Effect of Reheating and Quenching on the Cathodoluminescence Intensity of Free Lime in Steelmaking Slag

Effect of Humidity on Steelmaking White Slag Weathering

2021-8-19  Worldwide slag generation as a by-product of steelmaking processes is on a scale of mega-tons per year.[1,2,3,4] The environmental impact produced by such amounts of waste material has led to analyzing different ways to recycle or reuse it for several decades.Both internal (in the same plant) and external (in other industry or application) slag recycling are still a matter of study by the

Continuous steelmaking: the balance between intensity

2016-11-21  counter curtznt flow of slag and metal a launder, would seem to be closely linked resolving this issœ of productivity and ptoœss intensity. 2 CONSIDERATIONS The development of WORCRA echnology cúci&d with of the hearth sæelmaking and the riœ of oxygen steelmaking which utilized high levels of gas to produœ rapid stirring ard very fast

Slag Foaming in an Electric Arc Furnace

Slag foaming in electric arc furnace (EAF) steelmaking is critical for high productivity. The slag foam protects the refractories from the high intensity arc allowing for high power input and productivity. In the slag foaming process, carbon is injected into the slag, reacts with FeO in the slag producing CO, which foams the slag. The reaction

Basic Oxygen Steelmaking Slag: Formation, Reaction, and

2021-8-10  Basic oxygen steelmaking (BOS) slag, a product of hot metal element (e.g., Si, Mn, Fe, P) oxidation and flux (e.g. lime, dolomite) dissolution, plays a critical role in the production of high-quality crude steel, although its behavior inside the BOS vessel (formation and reaction with metal droplets and gas) is still not clear and its recycling has always been challenging.

Effect of MgO and Al2O3 variations in oxygen

2009-8-26  intensity of bottom stirring, lance height, oxygen flow rate, addition scheme and timing of addition of fluxes and iron ore. Therefore, each plant usually develops its own blowing 3 variations in oxygen steelmaking (BOF) slag on slag morphology and phosphorus distribution.

Steel and CO2 the ULCOS Program, CCS and Mineral

Carbonation using Steelmaking Slag Jean-Pierre BIRAT ArcelorMittal, Maizières-lès-Metz, France intensity of the European electricity grid will drop from 370 gCO2/kWh in 2006, to 144 g

Separation of valuable elements from steel making slag by

2020-7-1  Steelmaking slag has been utilized in the production of cement materials. However, the application of cement materials produced from steelmaking slag has been limited to fill or backfill use for construction, and the value added by the reuse of steelmaking slag is lower than that added by the reuse of blast furnace slag.

Recycling of steelmaking slag fines by weak magnetic

2014-11-1  The steelmaking slag fines can include desulfurization (DeS) slag fines, basic oxygen furnace (BOF) slag fines, electric arc furnace (EAF) slag fines and ladle metallurgy furnace (LMF) slag fines. Low iron grades, high impurity concentrations and inappropriate particle sizes are major barriers for recycling of the steelmaking slag fines back

Effect of P2O5 and FetO on the Viscosity and Slag

2015-1-9  Effect of P 2 O 5 and Fe t O on the Slag Viscosity. The viscosities of the CaO-SiO 2-Al 2 O 3-MgO-Fe t O-P 2 O 5 slags with varying P 2 O 5 contents from 0 to 9.21 wt pct are shown in Figure 3(a). It can be seen that the viscosity, as expected, continuously increased as the P 2 O 5 content increased at a given temperature. It was also noted that the effect of P 2 O 5 addition on the viscosity

Variation in Multiphase Flow Characteristics by Nozzle

2021-10-1  A 3D gas–slag–metal model for a 120t converter with nozzle-twisted lance is established, and the gas jet characteristics, slag–metal interface fluctuations, wall erosion, and changes in the molten pool flow field of the nozzle-twisted lance of the blowing

Continuous steelmaking: the balance between intensity

2016-11-21  counter curtznt flow of slag and metal a launder, would seem to be closely linked resolving this issœ of productivity and ptoœss intensity. 2 CONSIDERATIONS The development of WORCRA echnology cúci&d with of the hearth sæelmaking and the riœ of oxygen steelmaking which utilized high levels of gas to produœ rapid stirring ard very fast

Effect of MgO and Al2O3 variations in oxygen

2009-8-26  intensity of bottom stirring, lance height, oxygen flow rate, addition scheme and timing of addition of fluxes and iron ore. Therefore, each plant usually develops its own blowing 3 variations in oxygen steelmaking (BOF) slag on slag morphology and phosphorus distribution.

Steel and CO2 the ULCOS Program, CCS and Mineral

Carbonation using Steelmaking Slag Jean-Pierre BIRAT ArcelorMittal, Maizières-lès-Metz, France intensity of the European electricity grid will drop from 370 gCO2/kWh in 2006, to 144 g

Separation of valuable elements from steel making slag by

2020-7-1  Steelmaking slag has been utilized in the production of cement materials. However, the application of cement materials produced from steelmaking slag has been limited to fill or backfill use for construction, and the value added by the reuse of steelmaking slag is lower than that added by the reuse of blast furnace slag.

FeO content estimation in steel slag using Raman

2018-4-30  Steel slag content is studied using several methods, in order to obtain information about the steel quality and the effectiveness of steelmaking process. Raman spectroscopy provides detailed information about the material content of the slag. The intensity of Raman scattered radiation refers to the concentration of a particular compound in the

Determination of Free Lime in Steelmaking Slags by Use of

2021-12-4  In steelmaking industry of Japan, one-third steelmaking slag is reused for road constructions. Steelmaking slag contains a few weight percent of calcium oxide, which is termed as free-lime.

Growth promotion of Spirulina by steelmaking slag

2016-10-12  A solubility diagram was employed to understand growth promotion of Arthrospira (Spirulina) platensis by steelmaking slag (SMS). The growth promotion effect of 112 % of freshwater microalga A. platensis was obtained using 5 g/L SMS. However, metabolites, such as pigments, and protein content of A. platensis were not significantly affected. Several metals dissolved in

Joint processing of V-bearing steelmaking slag and V

2021-3-8  steelmaking, forming V-bearing steelmaking slag. Steelmaking slag is typically highly basic. The slag containing vanadium and iron is a valuable resource. However, the high basicity leads to instability, which restricts utilization of the slag, and the vanadium in the slag can cause heavy metal pollution [2–6]. Some metallurgists have

Slopping of Slag in Basic Oxygen Furnace IspatGuru

2020-5-26  Slopping of Slag in Basic Oxygen Furnace. Steelmaking in basic oxygen furnace (BOF) is a batch process in which steel is made from liquid iron. The concentration of elements such as carbon (C), manganese (Mn), and phosphorous (P) have an impact on the steel quality. For the steel to be cast, it needs to be at a pre-defined temperature.

steel making slag iron magnetic field intensity in us

slag crusher steelmaking. slag crusher steelmaking crushing steel slag in europepuntoalloggio it Steel Slag Crusher Belgium roicompany nl Steelmaking slag is subjected to the following four processes ① solidify and cooling of the hot molten slag ② crushing and magnetic separation treatment of the slag to recover the metal iron ③ crushing