Application of additives for blast furnace coal injection
In order to improve the combustion performance of coal powder and reduce the amount of unburned coal in blast furnace,which reduces the blast furnace fuel consumption,laboratory tests and industrial tests were carried out in combination,aiming at a 2 000 m3 blast furnace in Yunnan.The effects of the two kinds of commercially available coal powder additives were evaluated systematically during the tests.The results showed that alkali metals and their oxides and carbonates in coal powder additive had positive effects on improving the combustion performance of coal powder.Through the industrial tests for a period of 5 months,with the addition of about 0.5 ％ of No.2 additive in coal powder,the coal ratio was increased by 7.75 kg/t and the coke ratio was reduced by 8.47 kg/t.
blast furnacecoal powder injectionadditivecoke ratio
NETL
NSTL
万方数据
维普
