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最近二十年高炉生产取得了巨大的进步,焦比已低于400公斤/吨,利用系数超过2.0吨/米~3·日,单炉日产超过万吨。但从高炉操作说,由于炉内冶炼实质未变,煤气流和炉料柱的逆流运动仍然是炉内一切反应的基础,是影响传热和传质过程的根本因素,所以国内外操作方针相同:“在保证顺行的基础上,充分利用煤气的热能和化学能”。虽然如此,由于研究手段的现代化和研究工作的深入,对高炉炉内反应过程的认识已有很大进展,促进了操作水平提高。
In the recent two decades, blast furnace production has made great strides, with a coke ratio of less than 400 kg / t and a utilization factor of more than 2.0 t / m ~ 3 · day. However, blast furnace operation said that since the furnace smelting has not changed in essence, the countercurrent movement of the gas flow and the charging column is still the basis for all reactions in the furnace and is the fundamental factor affecting the heat and mass transfer processes. Therefore, the operating principles at home and abroad are the same: “On the basis of ensuring an antecedent basis, make full use of the thermal energy and chemical energy of the gas.” Nevertheless, due to the modernization of research methods and research work, great progress has been made in the understanding of the reaction process in blast furnace furnace, which has promoted the improvement of operation level.