1 炼铁预计高炉仍将是21世纪最主要的炼铁方法。但在环境污染、对燃料的适应性和生产效率等方面将受到熔融还原等新兴工艺技术的严峻挑战。面向21世纪,将发展以下高炉技术。 (1)大量喷煤降低焦比煤焦置换比可达0.85～1.0。以煤代焦,成 1 Ironmaking It is expected that the blast furnace will remain the most important ironmaking method in the 21st century. However, in the aspects of environmental pollution, adaptability to fuel and production efficiency, it will be severely challenged by emerging process technologies such as melt reduction. For the 21st century, the following blast furnace technologies will be developed. (1) a large number of coal injection to reduce coke burn than the replacement ratio of up to 0.85 ~ 1.0. Coal coke, into