平均脱碳时间(① Figure 13 shows the change of average decarburization time for each steel grade after revamping of RH facility. 图 13显示了 RH 装置改造后每一钢种平均脱碳时间的变化。②The average decarburization time before upgrade of the RH unit is calculated by the operation data of the year1996. 这台 RH 设备改造前的平均脱碳时间是根据1996 年的操作数据计算的。)
脱碳处理(After upgrading the RH facility, the average carbon content in steel after 12 minutes of decarburization treatment is about 20 ppm. 这台 RH 设备改造后,经过12 min 脱碳处理的钢水平均含碳量约为 20 × l0⁻⁶)
脱碳速率(The rate of decarburization as a function of oxygen (available from the lance as well as from the ore) must be known to determine the duration of the blow, so that the heat turns down at the desired carbon level. 脱碳速率作为氧气(包括氧枪供氧和矿石含氧)用量的函数必须为已知条件,以便确定吹炼时间,这样才能在达到预定含碳量时停炉。)