【作者】 辛明印； 胡志强； 段其福； 周伟； 周鲁生；

【Author】 Xin Mingying Hu Zhiqiang Duan Qifu Zhou Wei( Ben Steel ( Croup) ’s Mining Co. ) ( Gongchangling Mining Co. , Anshan Steel ( Croup) Co. )Zhou Lusheng ( China General Co. of Metallurical Mining)

【机构】 本钢(集团)矿业公司； 本钢(集团)矿业公司歪头山铁矿； 鞍钢集团弓长岭矿业公司技术处； 中国冶金矿业总公司；

【摘要】 介绍了以工艺矿物学、新工艺、新设备、新药剂为基础的降硅提铁技术。采用该技术使贫红铁矿和磁性铁矿选矿厂的铁精矿品位达到TFe67.5%和TFe69.5%,SiO2<4%。通过选矿厂技术改造与生产实践证明,具有中国特色的贫红铁矿磁选-重选-反浮选联合流程和磁铁矿全磁选降硅提铁流程的选矿技术已经达到了国际领先水平。更多还原

【Abstract】 The silica reduction and iron increase technology that is based on technological mineralogy, new technology, new equipment and new reagents is presented. Its application in lean hematite and magnetic iron ore concentrators has raised the iron concentrate grade to TFe 67. 5% and TFe 69. 5% and reduced the SiO2 content to less than 4% . The technological transformation and production practice of concentrator have shown that the technologies of the flowsheet of magnetic separation - gravity separation and reverse flotation for lean hematite and the sole magnetic separation for silica reduction and iron increase for magnetite ore that have Chinese features have reached the world leading level.更多还原