微细粒赤铁矿-石英体系的选择性絮凝试验研究  

Research on Selective Flocculation for System of Fine Hematite and Quartz

作　　者：李凤久 刘殿一 郑卫民 陈鹏 

机构地区：[1]华北理工大学,河北唐山063009 [2]河北钢铁集团矿业公司司家营铁矿,河北唐山063000

出　　处：《矿产综合利用》2016年第3期49-53,共5页Multipurpose Utilization of Mineral Resources

基　　金：河北省科技厅资助项目(15274109);河北省教育厅资助项目(2011155);华北理工大学2015年大学生创新创业训练计划资助项目(X2015097)

摘　　要：通过采用常规絮凝剂和新合成絮凝剂絮凝对单矿物和人工混合矿选择性絮凝试验,得出不同选择性絮凝剂对微细粒赤铁矿-石英体系的絮凝效果优劣顺序为:淀粉丙烯酰胺接枝聚合物>磺化聚丙烯酰胺>苛化玉米淀粉,综合考虑品位和回收率指标,以淀粉丙烯酰胺接枝聚合物效果最佳。当淀粉丙烯酰胺接枝聚合物接枝聚合物加入量为3 mg/L时,沉降物铁品位为42%,铁回收率为91.42%,当用量为1 mg/L时,絮凝沉降物最高品位为45%,相比原矿提高了12个百分点,为采用常规选矿方法进一步分选絮团创造了条件。Selective flocculation study was carried on the single and artificial mixed minerals by using the conventional flocculant and the new synthesis of flocculant, getting the order of merits of three kinds of flocculants on flocculation of fine hematite-quartz system：starch-acrylamide graft copolymer〉sulphonated polyacrylamide〉causticizing cornstarch. Considering the grade and recovery index, the starch acrylamide graft copolymer had the best effect. When the starch acrylamide graft copolymer dosage is 3rag/L, the iron grade of fallout is 42% and iron recovery rate is 91.42% ,when the dosage is lmg/L,the highest grade of the flocculated mass is 45%. Compared with the raw ore ,it was increased 12% ,which creates the conditions for using conventional mineral processing methods for further separation of floc aggregate.

关 键 词：赤铁矿-石英体系 微细颗粒 选择性絮凝 分散 

分 类 号：TD951[矿业工程—选矿]