Production practice of injecting coal powder combustion aids into Shougang Group
Since the 21st century,with the continuous improvement of the theory and technology of blast furnace coal injection,using coal powder to replace expensive blast furnace metallurgical coke has become an important means for steel enterprises to reduce costs and increase efficiency.In the current severe economic situation,Shougang Group's blast furnace continues to strengthen innovation and seek technological breakthroughs.The extensive use of coal powder is the result of blast furnace strengthening.Under the application of large-scale coal injection technolo-gy,Shougang Group's blast furnace has taken the lead in attempting to add coal powder as a combustion aid in the injection test,aiming to improve the production indicators of the blast furnace,increase the coal coke replacement ratio,reduce the cost per ton of iron,and enhance the competitiveness of the enterprise.The actual production test results show that the effective components in the combustion aid can affect the microstructure of coal powder.In summary,it makes it easier for C atoms in coal powder to combine with O atoms,promotes coal powder combus-tion,reduces fuel consumption,and ultimately reduces the fuel ratio of blast furnace by 6.44 kg,bringing consider-able benefits.At the same time,an analysis and exploration were conducted on some important indicators that affect the blast furnace after adding combustion aids.
large scale coal injection technologycoal powder combustion aidreduce cost and increase efficiencyfu-el ratio
万方数据
维普
