顶底复吹工艺(①There are, at present many different combination blowing processes, which differ in the type of bottom gas used, the flow rates of bottom gas, and the equipment used to introduce the bottom gas into the furnace. 目前有多种不同的复合吹炼工艺，其不同点在于底吹气体种类、底吹气体流量和底吹气体设备等。② In these combination blowing processes, 60% ~ 100% of the oxygen required to refine the steel is blown through a top mounted lance. 采用这些复吹炼钢工艺，精炼钢所需氧的 60% ~ 100% 是通过顶吹氧枪喷入炉内的。)