低成本综合回收超低品位伴生铁磷矿物的联合选矿工艺  

Combined Beneficiation Process for Low-Cost Comprehensive Recovery of Ultra-Low Grade Associated Iron and Phosphorus Minerals

作　　者：母传伟 陈铁亮 苑仁财 张皓楠 MU Chuanwei;CHEN Tieliang;YUAN Rencai;ZHANG Haonan(Shenkan Institute Co.,Ltd.,MCC Group,Shenyang,Liaoning 110167,China)

机构地区：[1]中冶沈勘工程技术有限公司,辽宁沈阳110167

出　　处：《自动化应用》2024年第20期95-98,共4页Automation Application

摘　　要：为了降低超低品位磁铁矿选矿成本并综合回收伴生磷矿,通过改进工艺流程,加入磨前超细碎和干式预选抛尾,并合理配置设备,使得矿石干选抛尾率提高,减少了入磨矿量,降低了磨矿成本,同时也减少了湿排尾矿量,降低了排尾成本。新工艺利用磁选铁矿尾矿进行低温浮选磷矿,合理配置了选矿设备,大幅度降低了浮选槽液温,节约了选厂采暖供热的建设资金,减少了冬季供暖能量消耗,在不影响浮选效果的情况下使得铁矿尾矿中磷的浮选成本降低了30%以上。通过以上工艺改进措施,探索出一条全新的联合选矿工艺,克服了常规选矿流程的弊端,成功实现了对超低品位伴生铁磷矿物的低成本综合回收。In order to reduce the beneficiation cost of ultra-low grade magnetite and comprehensively recover associated phosphate ore,the process flow was improved by adding pre-grinding ultrafine crushing and dry pre-separation tail-dumping,and the equipment was reasonably configured to increase the tail-dumping rate of ore dry selection,reduce the amount of ore entering the mill,lower the grinding cost,and also reduce the amount of wet tailings discharged,thereby reducing the tailings discharge cost.The new process utilizes magnetic separation of iron ore tailings for low-temperature flotation of phosphate ore,with reasonable allocation of beneficiation equipment,significantly reducing the liquid temperature of the flotation tank,saving construction funds for heating in the beneficiation plant,reducing winter heating energy consumption,and reducing the flotation cost of phosphorus in iron ore tailings by more than 30%without affecting the flotation effect.Through the above process improvement measures,a new combined beneficiation process has been explored,which overcomes the drawbacks of conventional beneficiation processes and successfully achieves low-cost comprehensive recovery of ultra-low grade associated iron and phosphorus minerals.

关 键 词：超贫磁铁矿 干式抛尾 低温浮选 联合选矿工艺 

分 类 号：TD951[矿业工程—选矿]