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“重钢”的两座620m~3高炉,因矿石品位低,渣量大,熟料比低,变料频繁,加之上下部调剂不相适应,长时期来炉况不顺,煤气利用差,指标很落后.近三年来,初步改善了原料条件,加强了生产管理并不断提高技术操作水平,生产取得了很大进步.风温由原来850～900°C 提高到1000～1068°C.这是在原料条件很差,没有燃料喷吹条件下实现的.作者认为,改进操作的关键在于选择适当的焦炭负荷,并以定温调湿作为调剂手段,逐步扩大矿批到18～20吨,并将倒装和半倒装为主的装料顺序逐步改为全正装,使煤气利用率提高了3～4％,焦比得到大幅度下降.
“Double Steel ” of the two 620m ~ 3 blast furnace, due to low grade ore, slag, clinker ratio is low, frequent change of material, combined with the upper and lower swap incompatible with the furnace for a long period of instability, gas utilization Poor, the index is very backward .In the past three years, the initial improvement of the raw material conditions, strengthen production management and continuously improve the technical operation level, production has made great progress .Curve temperature from the original 850 ~ 900 ° C to 1000 ~ 1068 ° C This is achieved under the conditions of poor raw materials, no fuel injection conditions.The author believes that the key to improving operations is to select the appropriate coke load, and to adjust the temperature and humidity as a means of adjustment, and gradually expand the ore batch to 18 to 20 tons , And the loading order of flip-flops and half flip-flops was gradually changed to full dress, which increased gas utilization by 3% to 4% and significantly reduced the coke ratio.