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通过150t 转炉顶底复合吹炼试验证明,钢液在熔池中均匀搅拌,可使冶炼过程得到极大的改善,钢渣强烈的混合加快反应过程而获得较好的经济效益:提高装入量6.16t/炉;金属收得率提高0.34%;钢铁料消耗降低8.4kg/t 钢;锰铁合金消耗降低0.35kg/t 钢;白灰消耗降低5kg/t 钢;氧气消耗降低1m~3/t 钢;钢锭合格率提高0.3%;故综合成本降低2.30元/t 钢。在鞍钢150t 转炉上采用 N_2、Ar 搅拌的顶底复合吹对 LD 转炼炉改造具有极重要的经济意义。
Through the 150t converter top and bottom compound blowing test proved that molten steel in the pool uniform mixing, the smelting process can be greatly improved slag strong mixing speed up the reaction process and get better economic benefits: Increasing the amount of loading 6.16 t / furnace; metal recovery rate increased by 0.34%; steel consumption reduced by 8.4kg / t steel; manganese ferroalloy consumption reduced by 0.35kg / t steel; white ash consumption reduced by 5kg / t steel; oxygen consumption reduced by 1m ~ 3 / t steel; Steel ingot pass rate increased by 0.3%; so the overall cost reduction of 2.30 yuan / t steel. In the Ansteel 150t converter using N_2, Ar mixing top and bottom composite blowing LD transformation furnace transformation has very important economic significance.