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我厂小高炉(33m~3)无固定炼铁燃料供应基地。特别是焦炭均系劣质土焦,强度差,1989年含硫量波动在0.8～2.8%,灰分高达25～30%,造成高炉冶炼造渣制度不稳定,炉缸工作长期不活跃不均匀,渣铁温度波动大,炉缸温度低.渣中FeO含量平均高达1.41%。炉渣脱硫能力差,生铁质量无保证,另外,由于炉缸煤气初始分布状况差,煤气利用率低,焦比高。
I plant a small blast furnace (33m ~ 3) no fixed iron fuel supply base. In particular, coke are poor quality coke, poor strength, in 1989 the sulfur content fluctuations of 0.8 to 2.8%, ash up to 25 to 30%, resulting in blast furnace smelting slagging instability, the work of the hearth is not active long-term uneven, slag Iron temperature fluctuations, hearth temperature is low slag FeO content as high as 1.41%. Slag desulfurization capacity is poor, pig iron quality is not guaranteed, in addition, due to poor initial distribution of hearth gas, low gas utilization, high coke ratio.