铝渣复合脱硫剂的应用研究

Research on Application of Compound Aluminous Slag Desulphidizer

本文对铝渣复合脱硫剂在可锻铸铁和ＺＧ４５Ｍｎ铸钢中的炉外脱硫作用与效果进行了系统的试验研究和理论分析．表明，采用石灰－铝渣－萤石固态复合脱硫剂可使可锻铸铁、铸钢脱硫率高达３０～４０％，同时可改善可锻铸铁中的石墨及夹杂物形态，提高机械性能，并可缩短可锻铸铁第一阶段石墨化退火时间，为铝渣在冶金工业中的综合利用开辟了新途径．

This paper describes the systematic experimental study and theoreticalanalysis of the desulphurization action and effect of the compound desulphidizer in mal-leable cast iron and ZG45 Mn cast steel.The results show that the desulphuring ratio ofmalleable cast iron and cast steel can reach 30～40%with the compound solid desul-phidizer of lime,aluminous slag and fluoride. Moreover,the shape of graphite and foreign matter in malleable cast iron and mechanical properties can be improved; annealingtime of graphization of malleable cast iron at the first stage can be shortened.A newway is opened up for comprehensive utilization of aluminous slag in the metallurgical industry.