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hot metal desulphurisation process

A Study on Desulfurization of Hot Metal Using Different Agents

While hot metal desulfurization is a process, the sulfide capacity of a slag must be measured under equilibrium. However, the sulfide capacities are important for process control and are a measure to judge the usefulness of a slag used for Several studies have

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Advanced Process Modelling of Hot Metal Desulphurisation by

Keywords: hot metal desulphurisation, process modelling, Mg injection, CaO injection, flotation of magnesium sulphide, slag/metal interface Full Text PDF [1531K] Abstracts References(14) Cited-By(5) To improve the lime–magnesium desulphurisation a process

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Hot Metal Pretreatment - an overview | ScienceDirect Topics

The hot metal was subject to desiliconization (to a Si-content level of < 0.1 mass%), dephosphorization and desulfurization in pretreatment process. The pretreated hot metal was refined in BOF operation with zero addition of slag-forming materials.

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Hot Metal Desulphurisation | Building Engineering | Materials

Hot Metal Desulphurisation - Free download as PDF File (.pdf), Text File (.txt) or read online for free. injection process according to the production conditions a comprehensive knowledge of the metallurgy of the hot metal desulphurisation process is required.

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Mathematical Model of Hot Metal Desulfurization by Powder Injection

Although there have been a numerous number of studies on mathematical model of hot metal desulfurization by deep injection of calcium carbide, the View at: Google Scholar. L.-K. Chiang and G. Irons, "Kinetic studies of calcium carbide hot metal desulphurisation by powder injection," ISS

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Sulphur removal in ironmaking and oxygen steelmaking

Sulphur removal in the ironmaking and oxygen steelmaking process is reviewed. A sulphur balance is made for the steelmaking process of Tata Steel IJmuiden, the Netherlands. There are four stages where sulphur can be removed: in the blast furnace (BF), during hot metal (HM) pretreatment, in the

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Iron losses during desulphurisation of hot metal

After injection of calcium carbide and magnesium during desulphurisation of hot metal, the slag is normally solid and contains large amounts of iron. Besides the enclosed iron droplets in the slag, drawn-off hot metal during slag skimming also accounts for iron losses during desulphurisation of hot metal.

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The Hampering Effect of Precipitated Carbon on Hot Metal

From an economic perspective, the sulfur in hot metal can be best removed, prior to the converter process, because of a low oxygen concentration, which is typically 3 ppm, and low hot metal temperatures (1300–1450 C).

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Desulphurization of Liquid Steel – IspatGuru

Jul 30, 2016 · Process of desulphurization. Primarily, there are two options available for the removal of sulphur from the liquid steel. These are (i) by means of metal-slag reaction, where the top slag is mixed intensively with the liquid steel, and (ii) by injection of metallic calcium (Ca) into liquid steel, where a precipitation of sulphides occurs.

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New way to cut hot metal sulphur. - Free Online Library

Sep 01, 2013 · The new process is particularly suitable for treating large batches. Simetal HM KR Desulf adds a stirrer-based solution to the current Siemens portfolio of desulphurisation plants that run on the injection process. Due to the use of sulphur-containing fuels in the blast-furnace process, hot metal always contains a certain amount of sulphur.

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DISSERTATIONS.SE: Iron losses during desulphurisation of hot metal

Iron losses during hot metal desulphurisation using both calcium carbide (mono-injection), and calcium carbide and magnesium (co-injection), have been studied by large-scale investigations of slag from the slag pit as well as slag sampling during the desulphurisation process at SSAB EMEA in

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Desulfurization of hot metal - NASA/ADS

1974/4/1 · Desulfurization of hot metal Meichsner, W.; Peters, Knahl, H. Abstract The injection process using calcium carbide based mixtures as a desulfurlzing agent is safe and economical. Publication: JOM - Journal of the Minerals, Metals and Materials Society

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CFD Modeling of Slag-Metal Reactions and Sulfur... | SpringerLink

Accurate prediction of the desulfurization behavior of steel is of great importance for process control during ladle metallurgical furnace (LMF) steel refining. J. Diao, B. Xie, S.S. Wang, Research on slag modifying agents for CaO-Mg based hot metal desulphurisation.

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Desulphurization of Hot Metal – IspatGuru

What is desulphurization of hot metal?

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PDF requirements_for_steel_plates_in_sour_service_2010

ƒ hot metal desulphurisation ƒ deep vacuum degassing ƒ special chemical composition (C, Mn, S, P) ƒ cleanliness stirring by Argon ƒ special casting parameter (no bulging, adapted superheating) ƒ intensified QA-process ƒ special care to avoid unacceptable segregations ƒ high shape factor rolling

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Processes - Ufuk ATE

DESULPHURISATION PROCESS Desulphurisation of Hot Metal : Removal of sulphur from hot metal is called desulphurization of hot metal. Sulphur is a desirable element in steel when good machinability is required from the steel product. However it is an unwanted element in most of the applications of steel due to the following reasons.

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Pretreatment of hot metal

9. Desulphurisation process • Dip lance process is the most economical, effective and reliable method of desulphurisation of hot metal. • It consists of pneumatic injection of fine grained desulphurisation reagent into the hot metal. • Nitrogen gas is normally used as a carrier gas for the

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PDF] THE LEADING HOT METAL DESULFURIZATION METHODS

2021/1/28 · Steelmakers worldwide agree that the most efficient and cost-effective solution in BOF steelmaking is to desulfurize the hot metal between the blast furnace and converter. Various methods are currently in use, among which the Kanbara Reactor (KR, using only lime as a reagent), Magnesium mono-injection (MMI, using only magnesium; also known as the Ukraina-Desmag process) and co-injection

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Hot metal desulphurisation in torpedo ladles and transfer ladles

More than 50 plants are desulphurising hot metal in torpedo and transfer ladles with capacities of 35 to 350 tonnes. Polysius injection systems can be used for all commercially standard desulphurisation reagents, such as lime, calcium carbide and magnesium, using the mono-, co-

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Process for desulfurization of molten hot metals - The Dow

A process for desulfuring molten metal comprising: injecting a desulfurization reagent into the molten hot metal by a carrier gas via a lance immersed in said molten hot metal; said desulfurization reagent comprising magnesium nitride. 4. The process of claim 3 wherein said molten hot

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