Improved heat-transfer technology at higher pulverized coal injection operation in blast furnace

摘要

And A method for the fine coal blown to carry out the blast furnace operation, the method comprising: determining a level of a pulverized coal injection ratio; Step for applying oxygen hatching according to the pulverized coal injection ratio; determining whether the ratio of the pulverized coal blown exceeds 150kg / tP; Using a lance comprising: blowing oxygen into the blast furnace; and high, characterized in that it comprises a service operating on a method of improving the heat transfer portion angry pulverized coal furnace.; It improves the flammability and, to prevent the deposition of unburned pulverized coal, it is possible to extend the length of one combustion, pulverized coal promote entrance even possible to maintain the stable operation without any lowering of the core temperature.