东鞍山含碳酸盐赤铁矿石浮选试验  

Flotation separation of Donganshan carbonates-containing hematite ore

作　　者：邵安林[1] 

机构地区：[1]鞍钢集团矿业公司,辽宁鞍山114001

出　　处：《中南大学学报（自然科学版）》2013年第2期456-460,共5页Journal of Central South University:Science and Technology

基　　金：国家"十二五"支撑项目(2012BAB141305)

摘　　要：针对纯矿物配成的含赤铁矿、菱铁矿、石英的混合矿进行浮选试验。随着铁矿石中菱铁矿质量分数的提高,铁精矿TFe品位、产率和回收率等指标迅速下降,说明现有反浮选流程不能将含有菱铁矿的铁矿石有效分选。提出将菱铁矿预先分离、然后再将赤铁矿和石英分离的分步浮选流程,相比常规反浮选流程,铁精矿TFe质量分数由42.34%上升至59.09%,铁的回收率由53.18%提高到79.84%。而针对东鞍山含菱铁矿的赤铁矿石,采用分步浮选工艺闭路流程,可获得铁精矿TFe质量分数为66.34%,回收率为71.60%。For the mixed minerals which were prepared by pure martite, siderite and quartz, the iron grade, yield and recovery decrease rapidly with the increase of siderite content in iron ore, which indicates that the reverse flotation couldn＇t concentrate the carbonates-containing hematite ore. Stepped flotation was proposed which separates siderite first and then takes martite apart from quartz. Therefore, the mass fraction of the iron grade increases from 42.34% to 59.09% and iron recovery increases from 53.18% to 79.84% compared with routine reverse flotation. And for Donganshan carbonates-containing hematite ore, the mass fraction of iron grade of 66.34% and recovery of 71.6% are obtained in close-circle experiment of stepped flotation.

关 键 词：假象赤铁矿 菱铁矿 石英 含碳酸盐 

分 类 号：TD923[矿业工程—选矿]