1 前言 2000年5月9日～30日,4号高炉利用2号高炉大修的机会,采用远距离双管道大喷煤的强化冶炼。喷煤量由4.0t/h增加到 5.6t/h,焦炭负荷也由3.88t/t增加4.13t/t,虽然时间不长,但为柳钢远距离大喷煤积累了经验。各项技术经济指标见表1。 1 Foreword May 9, 2000 ~ 30, No. 4 blast furnace take advantage of the No. 2 blast furnace overhaul, using long-distance double-pipe coal-fired intensive smelting. The amount of coal injected increased from 4.0 t / h to 5.6 t / h and the coke load increased from 3.88 t / t to 4.13 t / t. Although the time was not long, it accumulated experience for long-distance large-scale coal injection in Liuzhou Iron and Steel. The technical and economic indicators in Table 1.