Study on Smelting SiFe Alloy From Waste Residue
Utilizng Jinchuang Corporation's waste slag and quartz sand as main raw materials and charred coal and charcoal as reducing agent,ferro-silicon alloy was reclaimed by mixed charging method in self-made DC arc furnace.The alloy was analysed by means of XRD and optical microscope.The results show that when the mass ratio of quartz sand is 20% and the ratio of material and reducing agent is 1.9,the recovery rate of SiFe is the highest,and Fe5Si3 and Fe3Si can be obtained.DC arc furnace has a unique advantage in smelting FeSi alloy and can tackle bottom rise in smelting process.The technology can not only utilize waste slag but also protect environment.