承德路炼铁厂的两座6.5立方公尺小高炉,生产初期产量很低,任务完成很差。但在11月下旬以后的几个高产周中,生铁产量却有了飞快的提高。一号炉从11月20日至12月4日的15天中,平均日产7.324吨,二号炉从11月20日至12月5日平均日产9.2吨。现在两个炉子的平均利用系数一般都稳定在7.23左右。这个厂是怎样从低产飞跃到正常高产的呢? Chengde Road Ironworks two 6.5 cubic meters of small blast furnace, the initial production is very low, the task is completed very poor. However, in the few high-yield weeks after late November, pig iron production has risen sharply. In the first furnace from November 20 to December 4 in 15 days, an average of 7.324 tons per day, No. 2 furnace from November 20 to December 5 average daily output of 9.2 tons. The average utilization factor of the two furnaces is now generally stable at about 7.23. How does this factory leap from low to normal high yield?