摘要
采用h/D超极限螺旋溜槽对硫酸渣精矿含铁进行富集处理,并进行了生产氧化球团矿的试验研究。处理后精矿铁的品位提高到64.5%以上,回收率达80%以上,w(SiO2)降到5%以下。球团试验表明,粗粒度精矿经润磨后成球性改善,在最佳焙烧工艺下球团矿的强度可达2500N/个球。
This paper introduces experiments of acid pellet using treated pyrite slag and its commercial application. The pyrite slag was treated through a spiral chute with super critical h/D ratio. After treatment the grade of pyrite concentrate increased up to 64.5?% and the yield ratio reached over 80?% while its w(SiO_2) decreased to less than 5?%. Pelletizing experiments showed that the pelletizing property of coarse concentrate can be improved by damp grinding. In optimal roasting conditions, the strength of pellet can be reached to 2?500?N/pellet.
出处
《钢铁研究》
CAS
2005年第1期1-4,共4页
Research on Iron and Steel
关键词
氧化球团矿
润磨
精矿
硫酸渣
焙烧工艺
试验研究
成球
全硫
工业应用
SiO2
pyrite slag
spiral chute with super critical h/D ratio
separate beneficiation
pellet
experiment
commercial application
