(PDF) Recycling of ladle slag in the EAF A way to improve
Ladle Furnace Slag (LFS) may be used in substitution of fine aggregate (2-0.063 mm) and filler (<0.063 mm) in bituminous mixtures considering its suitable particle size and hydraulic properties.
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What are the steel production DanCrabon
Aug 10 2020 · Ladle Furnace refining method developed by Japanese Special Steel Corporation (Datong Special Steel Corporation) in 1971. The equipment and process are composed of argon gas mixing submerged arc heating and alloy feeding system. The advantages of this process are that the chemical composition and temperature of the steel can be precisely
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EPA1Method of production of a slag-forming
The subject matter of the invention is a method of producing a slag-forming compound for secondary steel refining in a ladle or a ladle furnace. According to the invention the method of producing a steel-forming compound for secondary steel refining in a ladle or a ladle furnace is as follows the fragmented slag obtained in the reduction process of steelmaking converter slag with the
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Transient Thermo-Mechanical Analysis of Steel Ladle
During step 2 the steel ladle is moved from the heating device to the converter or electric arc furnace and waits to receive the liquid steel. The duration of this step may reach 15 min. During this period the inner and outer surfaces of the ladle exchange heat with the
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Four main reasons for damage to ladle vent bricks
The part higher than the bottom of the bag is generally washed away after one use. In addition after refining if the valve is closed quickly the reverse impact of molten steel will also accelerate the erosion of the ventilated brick. The working surface of the ventilated brick core has a longer contact time with steel slag and molten steel.
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CNBRH vacuum refining desulfurization method
The invention discloses an RH vacuum refining desulfurization method which comprises the following steps (1) adding lime granules in the converter tapping process adding refining slag and adding aluminum slag or aluminum powder after the ladle stops blowing argon (2) sending the molten steel in the ladle into an RH furnace starting vacuumization and carrying out RH vacuum treatment in
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SSRS includes argon oxygen decarburization and ladle metallurgy slag . When SSRS compares with ground granulated blast furnace slag (GGBFS) from iron making steel slag contains toxic ingredients such as nickel cadmium chromium and strontium. These compounds could be harmful not only for environment but also for human health 9 10 . Steel
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Cyclic Use of Ladle Furnace Refining Slag for
Industrial experiments were carried out to study the cyclic use of ladle furnace refining slag on desulfurization. Sampling of refining slag and steel were undertaken simultaneously at roughly
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Superalloys 1972 a-1_a-40SlideShare
Jun 18 2015 · Vacuum Refining Processes These supplementary processes have in common the exposure of un-or semi-refined electric furnace melts in the teeming ladle to reduced pressures in a separate vessel or by placing a vacuum tight cover over the ladle. Advanced refining units are equipped with additional heating devices to provide the necessary process
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Four main reasons for damage to ladle vent bricks
The part higher than the bottom of the bag is generally washed away after one use. In addition after refining if the valve is closed quickly the reverse impact of molten steel will also accelerate the erosion of the ventilated brick. The working surface of the ventilated brick core has a longer contact time with steel slag and molten steel.
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Stainless Steel Manufacturing ProcessesIspatGuru
May 04 2014 · Stainless Steel Manufacturing Processes. Stainless steels contain from 10 to 30 chromium. These steels also contain varying amounts of nickel molybdenum copper sulphur titanium and niobium etc. The majority of production of stainless steel was through the electric arc furnace
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GBAHigh-cleanliness steel and processes for
A process for producing a high-cleanliness steel comprising the steps of transferring a molten steel produced in an arc melting furnace or a converter to a ladle furnace to refine the molten steel degassing the molten steel and then casting the molten steel into an ingot said process further comprising the step of tapping deoxidation wherein in transferring the molten steel to the ladle
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Stabilized ladle furnace steel slag for glycerol carbonate
Feb 01 2017 · The volume of generated slag increases with the consumption of steel products which affects utilization methods. Slag waste is categorized as electric arc furnace (EAF) steel slag ladle furnace (LF) basic slag blast furnace (BF) iron slag and basic oxygen furnace (BOF) slag based on the source furnace . Iron and steel slag are mostly
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The ABC of steelSSAB
C. Carbon dioxideCO 2 a colorless gas soluble in water to form carbonic acid included in carbonated drinks and comprises 0.04 of the atmosphere and is identified as a greenhouse gas Carbon monoxideCO a colorless and odorless energy-rich gas which burns with a blue flame noxious. Upon combustion carbon dioxide is formed Carbon steelUnalloyed steel
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(PDF) Steelmaking and Refining Volume AISE 1998 stefani
Steelmaking and Refining Volume AISE 1998. Download. Steelmaking and Refining Volume AISE 1998
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Pyrometallurgical recovery of copper from slag material
What we claim is 1. A cyclic two-stage process for recovering essentially all copper values present in molten slag comprising (a) subjecting a charge of the molten slag to vigorous agitation in a rotary reactor rotating at a speed of at least about 10 rpm (b) adding a carbonaceous or hydrogenous reductant to said charge of molten slag in the rotating reactor to reduce magnetite and to
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Corrosion mechanism and kinetic behaviour of refractory
The dissolution of solid oxides into molten slag is related to ladle life slag formation and the absorption of non-metallic inclusions by mould flux in continuous casting. Therefore the clarification of dissolution behaviour of solid oxides into molten slag is an important problem in refining and casting processes. In recent years the use of
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Use of ladle furnace slag containing heavy metals as a
Feb 25 2020 · Use of ladle furnace slag containing heavy metals as a binding material in civil engineering. Xu B(1) Yi Y(2). Author information (1)School Civil and Environmental Engineering Nanyang Technological University Singapore. (2)School Civil and Environmental Engineering Nanyang Technological University Singapore.
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ladle furnace process
Cyclic Use of Ladle Furnace Refining Slag for Desulfurization. The effect of sulfur enrichment on desulfurization reaction in ladle furnace slagrecycled process could be partially offset mainly by two aspects the amount of slag increased with increases in the number of times recycled slag reused and in the quantity of lime added which could directly reduce the mass fraction of sulfur in the
Get Price(PDF) Steelmaking and Refining Volume AISE 1998 stefani
Steelmaking and Refining Volume AISE 1998. Download. Steelmaking and Refining Volume AISE 1998
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Journal of Sustainable Metallurgy Journal Impact IF 2020
Cyclic Use of Ladle Furnace Refining Slag for Desulfurization Yang Wang · Shufeng Yang · Jingshe Li · Feng Wang · Yu Gu · Yu Gu Investigations on the Detectability of Rare-Earth Minerals Using Dual-Energy X-ray Transmission Sorting Kilian Neubert · Hermann Wotruba · Hermann Wotruba
Get PriceCNBThe hot refining slag of LF returns
The invention discloses a kind of hot refining slag of LF belonging to steelmaking technical field and return circulation utilization method step by step the process of each cycle applications of the method comprises just refine operation → LF refining procedure → VD vacuum outgas operation → cast operation wherein the hot refining slag of LF of specified amount is pulled down before
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(PDF) Steelmaking and Refining Volume AISE 1998 stefani
Steelmaking and Refining Volume AISE 1998. Download. Steelmaking and Refining Volume AISE 1998
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Titanium Distribution Ratio Model of Ladle Furnace Slags
A thermodynamic model for calculating the sulfur distribution ratio between ladle furnace (LF) refining slags and molten steel was established based on the IMCT. The model was verified with the measured and the calculated sulfur distribution ratio by Young s model and the KTH model in LF refining. CaO–SiO 2 –MgO–FeO–MnO–Al 2 O 3
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(PDF) Recycling of ladle slag in the EAF A way to improve
Ladle Furnace Slag (LFS) may be used in substitution of fine aggregate (2-0.063 mm) and filler (<0.063 mm) in bituminous mixtures considering its suitable particle size and hydraulic properties.
Get Price
A new catalytic opportunity for waste materials
Jun 01 2013 · There are different types of steel slag each one named for the process from which they are generated e.g. blast furnace slag (BFS) basic oxygen furnace slag (BOF) electric arc furnace acid slag (EAF) and ladle furnace basic slag (LF) the former one is also called iron-making slag and the latter three are also called converter/refining slag .
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CNBThe hot refining slag of LF returns
The invention discloses a kind of hot refining slag of LF belonging to steelmaking technical field and return circulation utilization method step by step the process of each cycle applications of the method comprises just refine operation → LF refining procedure → VD vacuum outgas operation → cast operation wherein the hot refining slag of LF of specified amount is pulled down before
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Recycling Ladle Furnace Slag as Flux in Steelmaking A
The use of synthetic fluxes in secondary steelmaking not only improves the properties of top slag and steel quality but also increases the production cost. Ladle furnace (LF) slag can be used as a
Get PriceVIRUS METALURGI Metallurgy is the best for Future
Refining (pemurnian baja cair dengan pembentukan foamy slag parameter foamy slag yang bagus yaitu viskositas optimum FeO content MgO content injeksi O 2 untuk mengikat impurities) Tapping/Pouring(menuang baja cair ke ladle apabila komposisi dan temperature telah tercapai)
Get PriceA study on the durability of structural concrete
Feb 10 2018 · An additional high-silica low-alumina ladle furnace slag (LFS) with a density of 3.03 Mg/m 3 and a fineness modulus of 0.75 units was also used the amount of material passing the 40 µm sieve is 19 . Its chemical composition and other physical properties are detailed in Table 2 and its grading in Fig. 1.A minor fraction of the total amount of LFS added to the hydraulic mixes could show
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