Experimental Study on Effects of MgO on Rheological and Melting Properties of Blast Furnace Slag of Baotou Steel
The effects of MgO on rheological property of blast furnace slag of Baotou Steel are analyzed by preparing slag specimen with pure chemical reagent under N2 atmosphere based on the 4#blast furnace slag of Baotou Steel under la-boratory conditions and crude fuel conditions of blast furnace ironmaking production of Baotou Steel. Moreover,the effects of MgO on melting property and enthalpy of blast furnace slag of Baotou Steel are also explored. The results showed that the MgO content of slag was increased from 8.00％ to 13.00％,melting temperature of blast furnace slag of Baotou Steel was on the rise,viscosity and viscous flow activation energy showed a trend of first decreasing and then increasing,fluidity and thermal stability of slag became first good and then poor under experimental conditions. In addition,the characteristic tem-perature of melting property for blast furnace slag of Baotou Steel shows a trend of first decreasing and then increasing as well as enthalpy of slag shows a trend of increasing with the increase of MgO content of slags,which show that the heat storage capacity of slag in blast furnace hearth is enhanced. The MgO content of blast furnace slag of Baotou Steel is sugges-ted to be controlled at 10.00％ by comprehensively considering the experimental study results,relevant theoretical calcula-tions and control level of MgO content of existing blast furnace slag of Baotou Steel.
万方数据
维普
