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苏钢从1997年6月开始在5号高炉(140m~3)开展了在现有含铁炉料和大渣量(600kg/t)条件下获得高产高效和稳产、长效的攻关试验。通过不断改善原燃料质量,采取强化冶炼综合措施,实现经济运行,打破传统观念,贯彻多风口、高风速、高动能方针与大喷吹、富氧、高风温相结合,获得了利用系数2.6～2.7、混合煤气CO_2l6.5％～17.2％、焦比520～530kg/t、煤比大于100kg/t、成本930～940元/t铁的先进指标。
From June 1997, the Company started to carry out research on high yield, high efficiency, stable yield and long-term efficiency in existing blast furnace slag and large slag (600 kg / t) at No. 5 blast furnace (140m ~ 3) By continuously improving the quality of raw fuel, adopting comprehensive measures to strengthen smelting, realizing economic operation, breaking the traditional concept, implementing the guideline of multi-outlet, high wind speed and high kinetic energy combined with large injection, oxygen enrichment and high air temperature, the utilization coefficient 2.6 ~ 2.7, CO 2 16.5% -17.2% of mixed gas, coke ratio 520 ~ 530kg / t, coal ratio greater than 100kg / t, the cost of 930 ~ 940 yuan / t iron advanced indicators.