攀钢钢渣选铁试验研究  

Experimental Study on Separating Iron from Steel Slag of Panzhihua Steel

作　　者：黄阳[1] 王维清[1] 向香源 任鹏鲲 冯启明[1] 徐中慧[1] 

机构地区：[1]固体废物处理与资源化教育部重点实验室 [2]西南科技大学环境与资源学院

出　　处：《现代矿业》2017年第8期124-126,128,共4页Modern Mining

摘　　要：攀钢钢渣含铁34.67%,主要金属矿物磁铁矿呈粒状,嵌布粒度较细。为从该钢渣中有效回收铁,分别采用单一湿式磁选和预先筛分—湿式磁选联合工艺进行选别试验。结果表明,钢渣中+5 mm粒级铁品位高达89.96%,可直接回收利用;单一湿式磁选工艺回收指标较好,但流程负荷重;预先筛分—1粗1精湿式磁选联合工艺可有效回收钢渣中金属铁粒和细粒级磁性铁,TFe回收率63.42%。其中TFe品位大于90%的金属铁粒可直接返回炼钢,TFe品位48.26%的铁精矿适用于烧结配矿,湿式磁选尾渣可用作水泥活性混合料,有效回收了钢渣中的铁,实现了炼铁钢渣资源的综合利用。There is 34.67% iron in steel slag of Panzhihua Steel, magnetite is the main metallic minerals with grainy that dissemination size is fine. In order to recover iron from the steel slag, experi- ments were carried out by using single wet magnetic separation process and prescreening -wet magnetic separation combined process respectively. The results showed that, ＋ 5 mm size fraction in the steel slag could be recycled directly in which iron grade is as high as 89.96% , the recovery index of single wet magnetic separation process was good while the flow load is high, prescreening and one roughing-one cleaning wet magnetic separation combined process could effectively recover metal iron particles and fine- grained magnetic iron with TFe recovery rate of 63.42%. The metal iron particles could directly back to the steelmaking process of which TFe grade was more than 90% , and wet magnetic separation tailings could be used as matching ore for sintering of which grade was 48.26%. Iron in the steel slag was recov- ered effectively, and the comprehensive utilization of ironmaking steel slag resources was realized.

关 键 词：钢渣 磁选 预先筛分 铁精矿 

分 类 号：TD951[矿业工程—选矿]