中国炼铁技术发展评述

近两年来中国生铁产量高速增长，同时高炉炼铁技术也取得了较大进步。2007年全国重点钢铁企业高炉炼铁焦比达到392kg／t，热风温度达到1125qE，喷煤比达到137kg／t，利用系数为2．677t／m^3．d。这些指标创造出我国历史最好水平。宝钢、武钢、首钢、鞍钢等企业的大高炉生产技术进入成熟发展阶段，炼铁燃料比低于500kg／t。但是，中国炼铁产业集中度低，炼铁企业发展不平，先进与落后共存，尚有6000多万t／年生产能力属于淘汰之列，造成中国炼铁技术发展不平衡。

TECHNOLOGY PROGRESS OF BLAST FURNACE IRONMAKING IN CHINA

The output of hot metal has made a high speed incease in recent 2 years, at the same time, the technology of blast furnace ironmaking has a great progress in China. Some technological parameters of iron making has reached the best level in history in 2007, for example, coke rate is 392kg/t, Blast temperature is 1125 ℃, coal rate is 137kg/t and producitivity is 2. 677t/m^3. d in the key enterprises of China. The technology of blast furnace ironmaking has reached maturational development stage in Baosteel, WISCO, Shougang, Angang and so on, and fruel material rate is less than 500kg/t. But the structure of Chinese blast furnace ironmaking is too spread around, and there are 600mt/a productive capability will be wash out, so the technology progress of blast furnace ironmaking in China is not balance.