Abstract：In order to further reduce inclusion defects and improve product quality, the modification of ladle top slag based on carbon deoxidation was studied.The production process of cold-rolled products is,hot-metal pre-treatment→BOF converter →RH refining →continuous casting. In order to reduce the content of inclusions in steel, the ladle slag should be modified to reduce its mass percent of TFe. Top slag modification process based on carbon deoxygenation was applied, in which carbon particle was used modify the steel bag top slag, partially replace the aluminum slag ball. Good results were got, the mass percent of TFe in the ladle slag and the mass percent of [O] in the tundish steel were reduced,meanwhile the Al2O3 inclusions in the billet was also optimized. Cost savings about 5.16 yuan/t(steel),in the "30 kg carbon particle + aluminum slag ball" modification process, was got.
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2020, Vol. 55 
