【摘要】 用CaO-天然碱-CaF₂系粉剂在试验室电阻炉和中频炉试验,均获得较好的脱硫效果,其脱硫效率随天然碱配入量增加而明显提高。CaF₂配入量以10％左右为宜。当铁水中初始含硫量约为0.08％,70 ％CaO-20％天然碱-10％CaF₂粉剂用量为铁水量的0.8％（按重量）时,脱硫效率（η_s）为78％;粉剂用量增至1.5％时,η_s可达87％。更多还原

【Abstract】 Experiments of Desulphurization of hot metal by using CaO-natural soda ash-CaF₂ flux havebeen carried out in different laboratory furnace. The results show that the desulphurizing effici-ency increaes markedly with the increase of amount of natural soda ash in flux. The reasonablecontent of CaF₂ in flux is about 10%. The content of sulphur in hot metal before treatment isabout 0.08%. It found, that a flux with composition of 70% CaO-20% natural soda ash-10%CaF₂,the desulphurizing efficiency reaches 78% when the amount of flux added at 0.8%（wt） of hotmetal. The efficiency of desulphurization reaches to 87% when the addition of flux comes to avalue of 1.5%（wt） of hot metal.更多还原