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HMDS (Hot Metal Desulphurisation Station) process is to remove sulphur from hot metal. In BOF, hot metal is converted into steel. Sulphur can be reduced in blast furnace / Corex, but it will be having detrimental effect on plant economy. The generation of steel melting slag are 200220 kg/t
Desulfurization Process, dephosphorization and Secondary Refining. The search for efficiency in the desulfurization process (reduction in the sulfur content) of pig iron led to new procedures and equipment innovations, which increased significantly the final quality of steel and reduced the consumption of power, in addition to turning toxic ...
SMS Mevac provides equipment, process knowhow and additional services required for the production of highquality steel grades. The range of metallurgical equipment covers vacuumtype and atmospherictype treatment processes for hot metal pretreatment, secondary and tertiary metallurgy.
Injection systems for ... the blast furnace process; the hot metal desulphurisation process steel treatment; quality optimisation of steel works slag; recycling filter dusts . top; Blast furnace process; Hot metal desulphurisation; Steel treatment; Quality optimisation; Filter dust recycling ...
The current hotmetal desulfurization project is the latest example of our continuing relationship with ILVA since the supply of two RHOB units including a TOPlance upgrade. Being an innovative company, SMS Mevac is constantly striving to optimize the design of its plants, its processes and technology.
During the magnesiumlime coinjection process for hot metal desulphurisation, graphite can precipitate as a result of carbon oversaturation. The formed graphite is known to form a layer between the slag and the hot metal. This potentially blocks the sulphides, that are formed during the desulphurisation process, to reach the slag phase thus ...
Dec 28, 2015· Walter H. Meichsner is a member of the Research Dept. of August ThyssenHiitte, Duisburg, West Germany. He received a Met. E. degree from the Technical Univ. of Santiago, Chile, subsequently joining ATH in 1965, where he has worked on applied research problems related to steelmaking, billet reheating and on development of metallurgical processes.
The desulfurization of hot metal by the monoinjection of lime powder and the coinjection of lime, calcium carbide and magnesium powders is mathematically modeled. The monoinjection model is derived from the continuity equation and is validated using experimental results and data previously reported in the literature. The coinjection model and the rate constant of the injected mixture are ...
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Use of Computational Thermodynamics in the Analysis of Hot Metal Desulphurization with Slags Based on Marble Waste and Sodalite Grillo 1, Coleti 2, Oliveira, Tenório, E. Junca1 and Espinosa2 1Department of Metallurgical Engineering, Federal Institute of Espírito Santo, Vitoria, Espirito Santo, Brazil 2Department of Chemical Engineering, Polytechnic School of ...
Iron losses during hot metal desulphurisation using both calcium carbide (monoinjection), and calcium carbide and magnesium (coinjection), have been studied by largescale investigations of slag from the slag pit as well as slag sampling during the desulphurisation process at SSAB EMEA in Luleå.An alkalicontaining mineral, nepheline syenite ...
desulphurisation agent and dissolved sulphur in the hot metal in order to reach maximal reagent efficiency and short treatment time. Today injection is the dominating technology used for desulphurisation of hot metal and the process vessels for injection of desulphurisation agents, lime (CaO), calcium carbide (CaC
Hot metal desulphurisation deep vacuum degassing cleanliness stirring by Argon Calcium treatment special chemical composition (C, Mn, S, P) special casting parameter (no bulging, adapted superheating) intensified QAprocess special care to avoid unacceptable segregations
Considering the different physical and chemical properties between magnesium granules and calcium carbide powders, the thermodynamics, mechanism and kinetics of desulphurization in hot metal by magnesium injection were mainly discussed. Based on the analysis about the influences of the mixing time, the penetration ratio of injected powder and the residence time of injected powder in the bath ...
Hot metal predesulfurization (the preliminary desulphuzation of hot metal) process methods of Hot Metal Desulfurization method are many, depending on the way stirring the molten iron way and desulfurization agent can be divided into: Spreading method, shake the container method, mechanical stirring, blowing stirring method injection method ...
Desulfurization of Hot Metal Through In Situ Generation of Magnesium in 30‐kg Molten Iron Bath‐Influence of Inert Gas Flow Rate. Anil Kumar. Tata Steel, Jamshedpur, 831 001 India ... The influence of the flow rate of inert gas on the generation of magnesium and the desulfurization process was studied. The degree of desulfurization was ...
The new process is particularly suitable for treating large batches. Simetal HM KR Desulf adds a stirrerbased solution to the current Siemens portfolio of desulphurisation plants that run on the injection process. Due to the use of sulphurcontaining fuels in the blastfurnace process, hot metal always contains a certain amount of sulphur.
A new method of desulphurisation of hot metal by immersion is developed by immersing the steel tube filled with desulphurisation powder and propellant into molten desulphurisation powder is injected into molten iron by pressure produced by propel
Based on research of hot metal pretreatment process for desulfurization with magnesium,physical chemistry behavior of magnesium in hot metal and the dynamical behaviors of desulfurization with magnesium are solid magnesium come into hot metal,some magnesium dissolve and saturate,the other become air bubbles reacted with bigger of the radius of solid .
May 28, 2015· When the hot metal temperature is already too low before desulphurisation, the desulphurisation process has to be omitted completely. This is more common with the KR process.
