宣龙式鲕状赤铁矿石工艺矿物学研究  

Study on Process Mineralogy of Xuanlong Type Oolitic Hematite

作　　者：王守敬[1,2] 卞孝东[1,2] 张艳娇[1,2] 刘广学[1,2] 马驰[1,2] 

机构地区：[1]中国地质科学院郑州矿产综合利用研究所 [2]国家非金属矿资源综合利用工程技术研究中心

出　　处：《金属矿山》2013年第10期76-79,共4页Metal Mine

基　　金：中国地质调查局地质调查评价项目(编号:1212011120303)

摘　　要：为了给宣龙式鲕状赤铁矿石的大规模开发利用提供基础参考资料,对其进行了工艺矿物学研究。结果表明:矿石中的脉石矿物可划分为长石和石英等及黏土和云母等两类。前者嵌布粒度较粗,与赤铁矿关系不密切,较易通过选矿去除;后者嵌布粒度极细且与赤铁矿紧密共生,难以通过选矿分离,但其烧失量较高,可以通过灼烧降低其含量。据此建议采用高梯度强磁选—反浮选—灼烧(可与炼铁过程合并)工艺处理宣龙式鲕状赤铁矿石。最后在总结以往一些研究成果及本研究成果的基础上,指出工艺矿物学研究应注重矿物集合体嵌布特征的研究。In order to provide the reference basis for large-scale development and utilization of Xuanlong-style oolitic hematite, its process mineralogy research was carried out. The results showed that： gangue minerals in the ore can be clas- sified as two categories consisting of feldspar, quartz etc. and clay, mica etc. The former is disseminated coarsely with no close relationship with hematite. So it is easy to be removed through the beneficiation process. The latter is finely dissemi- nated and closely associated with hematite, resulting that it is difficult to be removed. But it has a higher LOI, and can be reduced through roasting. Accordingly, the process of high-gradient high intensity magnetic separation-reverse flotation- roasting （can be merged with iron-making process） is recommended to treat Xuanlong type oolitic hematite. Finally, based on summarizing some previous research results and this study above, it is pointed out that the process mineralogy should fo- cus on studying the disseminated characteristics of mineral aggregates.

关 键 词：宣龙式鲕状赤铁矿石 工艺矿物学 高梯度强磁选—反浮选 灼烧 矿物集合体嵌布特征 

分 类 号：TD91[矿业工程—选矿]