A feasibility study is made on injecting biomass micro-powder to the blast furnace of Shougang.The results show that:(1)the total biomass resources available in Tangshan,Hebei Province is equivalent to about 1,376,400 t,which can meet the furnace demand for the fuel injection,and the cost of biomass resources is lower,just CNY 877.4 yuan/t approxi-mately,signifying good economic benefits if the power is used for injection;(2)among several biomass micro-powder sam-ples prepared by variable pressure flash evaporation technology,sample 7 is most suitable for blast furnace because of its low ash content,low moisture and its energy density which is close to the that of lignite coal,but the preparation process parame-ters still need to be further optimized to obtain higher grade biomass micro-powder;(3)considering the furnace production parameters and quality of the raw material and fuel,it is feasible to replace 10 kg/t pulverized coal with 31.6 kg/t sample 7,and the variation of the tuyere heat conditionis lessas compared with the reference working condition.
维普
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