Ferro manganese is an alloy composed of manganese and iron and is produced by blast furnaces or electric furnaces. High carbon ferro manganese produced by electric furnace is primarily used as deoxidizer, desulfurizer and alloy additive for steelmaking. In addition, with the progress of low carbon ferro manganese production expertise, excessive carbon ferromanganese may also be used to produce low carbon ferro manganese.
In this method a standard Ladle Degassing (VD, Tank Degassing) chamber is outfitted with a vertical water cooled lance for blowing oxygen on the molten steel surface.
Vacuum Oxygen Decarburization (VOD) methodology is used for manufacturing Stainless steels. Oxidation of liquid steel elements beneath vacuum differs from that at normal pressure: oxygen is consumed primarily by the reaction [C] + [O] = CO relatively than by oxidation of chromium, which is the primary constituent of stainless steels.
VOD course of permits to decarburize the steel with minor chromium losses.
Oxidation reactions have also heating impact subsequently the treated metal may be heated to a required temperature with none further vitality supply.
After having the decarburization (oxidation) stage accomplished deoxidizers are added to the steel so as to remove extreme oxygen. Then a Desulfurizing slag is added to the molten steel surface. Stirring of the melt and the slag caused by argon blown via the porous backside plug results in deep desulfurization of the steel.
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LRF refines the preliminary smelting steel liquid from EAF, Martin furnace and converter, it is an important metallurgical equipment which might adjust the temperature of steel liquid, process buffering, and can even meet the requirement of continuous casting and rolling. LRF is one among the primary gear of external refining.
The slag must be fully liquid (liquid fraction > 0.9). This is required for kinetic causes. The slag phase have to be fluid in order that it will possibly emulsify with the liquid steel and type a large surface space the place the reaction between steel and slag can happen.
2. The slag should take up a large amount of S from the liquid steel (have a “high sulfur capacity”) in order that a big amount of sulfur will move from the liquid steel to the slag section.