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当前世界上炼铁工业中降低焦比已成为急需解决的关键问题之一。为了降低焦比,采用了提高风温、加大喷吹量、精料、大风、重负荷、富氧和强化高炉操作等措施。其中提高风温对增大喷吹量,改善喷吹效果、提高置换比,从而节省焦炭有直接好处。目前国外高炉风温有的达到1200～1300℃,焦比降到450～360公斤/吨, 日本正在研究1350℃,西德研究设计1400℃的高风温热风炉。
At present, reducing the coke ratio in the ironmaking industry in the world has become an urgent problem to be solved. In order to reduce the coke ratio, the measures such as increasing the air temperature, increasing the injection volume, concentrate, gale, heavy load, oxygen enrichment and blast furnace operation are adopted. Among them, increasing the air temperature has the direct benefit of increasing the injection quantity, improving the injection effect, increasing the replacement ratio and thus saving coke. At present, foreign blast furnace temperature reached some 1200 ~ 1300 ℃, coke ratio dropped to 450 ~ 360 kg / ton, Japan is studying 1350 ℃, West Germany, the design of 1400 ℃ high temperature hot stove.