关键词: 150 mm×150mm方坯, ML08Al钢, 连铸, 工艺实践

Abstract: The   low   carbon   low   silicon   aluminum   killed   steel   ML08Al(%:≤0.08C,0.20～0.50Mn,≤0.06Si,  0.02Al)was produced by 83 t top-bottom combined blown converter - 83 t ladle furnace - 6 strand 150 mmx 150 mm billet concaster process at Baotou Steel. The operation practice showed that the aluminum content in steel was regularly 0.02%~ 0.09% by 43Al- 13Mn-2Ti alloy deoxidation during tapping of converter instead of Al brick; the nozle clogging was avoided as sulphur content in steel was less than 0.01% to decrease amount of CaS formed in molten steel; and the resilicon amount decreased by decrease down slag amount and adding 400 kg lime in tapping of converter,and regulate deoxidation reagent adding amount and time to ensure silicon content in steel no more than 0.06%,

Key words: 150 mm×150 mm Billet, Steel ML08Al, Concasting, Process Practice