在埃及赫勒万钢铁厂的90tLD转炉上,进行了100炉低温铁水的吹炼试验,以观察不同铁水含硅量对转炉产率和炉衬侵蚀作用的影响。此转炉由焦油白云石镁砖砌筑,高镁白云石成分为(％):MgO56～60,CaO20～23,SiO_22,R_2O_35～6。每炉装入75～80t铁水,10～15t废钢;铁水成分为(％):C3.5～4.0,Si0.5～1.3,Mn1.6～2.2,S0.03～0.05,P0.35～0.45。兑毕铁水后加入6～8t含SiO_20.8％、MgO In the 90tLD converter at the Hellewan steel plant in Egypt, 100 low temperature hot metal blowing experiments were carried out to investigate the effect of different silicon contents on converter yield and lining erosion. The converter consists of tar dolomite magnesia brick masonry, high magnesium dolomite composition (%): MgO56 ~ 60, CaO20 ~ 23, SiO_22, R_2O_35 ~ 6. Each furnace is charged with 75-80 tons of hot metal and 10-15 tons of scrap steel; the hot metal composition is (%): C3.5-4.0, Si0.5-1.3, Mn1.6-2.2, S0.03-0.05, P0.35-0.45 . After the completion of the molten iron by adding 6 ~ 8t containing SiO_20.8%, MgO