宝钢铁水预处理“三脱”喷粉剂的研究之一——铁酸钙合成渣的试验研究

Study on the Combined Slag Made of Calcium Ferritite for the Pretreatment of Hot Metal

在实验室条件下,进行了用石灰(石灰石)和氧化铁皮制备铁酸钙合成渣的试验研究。结果表明,在一定条件下,制成了含铁酸钙>85％的预合成渣,其熔点低、熔化快;用它处理含硅<0.20％、含磷0.060～0.070％的铁水时,其脱硅效率接近100％,最大脱磷效率>87％。本文着重讨论了铁酸钙合成渣的主要形成条件及其物化性质。

Under laboratory conditions, we have conducted the experimental study on the combined slag made of calcium ferritite with lime(lime stone)and scale. The experimental result shows that we have made pre-combined slag with calcium ferritite(>85％)under certain conditions. The slag has a low melting point and rapid melting rate. when treating hot metal(containing Si<0.2％,P<0.06-0.07％)with this slag, we have obtained desilion efficiency approximate to 100％ and maximum dephosphorization efficiency more than 87％。In this paper, the mainly forming conditions of calicum ferritite and its physical and chemistry characteritations are also discussed.