由于制硫酸的原料来源及焙烧工艺的不同，烧渣含铁合硫也不一样，选铁脱硫的办法也不相同．综述了国内浇渣选矿现状，并提出了选铁除硫和在硫酸生产中采取精料政策等建议，以便更有效地回收铁的资源．烧渣中如果硫酸盐含量高，可采用湿法脱硫；而当硫化物含量高时，只有采用磁化焙烧－磁选工艺才能有效地脱硫。铁的选矿采用强磁选和重－浮联选可以获得较好指标。 Due to the different sources of raw materials and roasting process of sulfuric acid, the iron-containing sulfur in slag is not the same, and the methods of iron desulfurization are not the same. The current status of domestic slag-making beneficiation is reviewed, and some suggestions such as selecting iron and removing sulfur and adopting fine material policy in sulfuric acid production are put forward so as to recover iron resources more effectively. If the sulfate content in the slag is high, wet desulfurization may be used; and when the sulfide content is high, only the magnetization roasting-magnetic separation process is effective in desulfurization. Iron beneficiation using strong magnetic separation and heavy - float election can get better indicators.