The production desulfurization practice of 250 ton RH refining furnace
In order to study the desulfurization effect for different types of steel in RH smelting,In this paper,the technological practice of DC06 steel grade,electrical steel and LF-RH(duplex)steel has been studied.Through practice,it is concluded that the deeper the deoxidization degree in steel,the better the desulfurization effect after adding desulfurizer,After adding equal quality desulfurizer into steel,the desulfurization amount is in positive pro-portion to the initial sulfur content in molten steel and in inverse proportion to the desulfurization rate;After adding desulfurizer,the desulfurization is the fastest in the first 6 minutes,and the sulfur in the steel is basically unchanged after 8 minutes.The addition amount should be controlled within 4 kg/ton steel,so as to prevent the slag from thickening and affect the ability of absorbing inclusions.
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