“九五”期间,炼铁厂对高炉喷煤系统进行了一系列技术改造。主要有:扩大除尘器布袋面积以提高球磨机产量;增加一台中连磨以提高制粉能力;对煤粉仓加高扩容以增加存煤量;对4号高炉进行远距离喷煤改造以适应提高喷煤 During the “Ninth Five-Year Plan” period, the ironworks carried out a series of technological transformations on the blast furnace coal injection system. Mainly include: expanding the bag area of ​​the dust collector to increase the output of the ball mill; adding a mid-mill to improve the milling capacity; expanding and expanding the coal bunker to increase the amount of stored coal; reheating the No.4 blast furnace to adapt to the long- Pulverized coal