Abstract：In order to research the relationship between alkali load and degradation of coke in Shougang blast furnace, a mathematic model of the circulatory accumulation of alkalis was used to calculate the final accumulation and distribution of alkalis in blast furnace. Then a series of experiments on coke solution had been taken in different concentration alkalis atmosphere. By means of inverse calculation, the degradation degree of coke under different alkali load conditions could be achieved. The result indicated that, the final accumulation of potassium and sodium in Shougang blast furnace were 34.89 and7.44kg/t. However, the coke in blast furnace had been degraded badly, CRI and CSR of which were 53.14% and 61.69%. If the damage of alkalis were expected to be controlled, the potassium load and sodium load would be restricted below 0.48 and 3.11kg/t.
2015, Vol. 25 
