柏泉铁矿石铁、磷选矿工艺优化研究  

Optimization Research of Iron and Phosphorus Beneficiation Process in Iron Ore from Baiquan

作　　者：郭文达[1,2] 韩跃新 张力民[3] 朱一民 李艳军 范志国[3] Guo Wenda;Han Yuexin;Zhang Limin;Zhu Yimin;Li Yanjun;Fan Zhiguo(College of Resources and Civil Engineering ,Northeastern University,Shenyang 110819,China;Chaoyang NEU Mineral and Metallurgy Institute,Chaoyang 122606,China;Chengde Baiquan Iron Mine,Hebei Iron and Steel Group Mining Co.,Ltd,Chengde 067500,China)

机构地区：[1]东北大学资源与土木工程学院,辽宁沈阳110819 [2]朝阳东大矿冶研究院,辽宁朝阳122606 [3]河北钢铁集团矿业有限公司承德柏泉铁矿,河北承德067500

出　　处：《金属矿山》2018年第11期77-80,共4页Metal Mine

基　　金：国家自然科学基金项目(编号:51274056;51474055)

摘　　要：为了解决柏泉铁矿"先铁后磷"生产工艺存在的流程较复杂、铁尾矿泥化较严重、脱泥作业造成磷流失,以及选磷药剂制度较复杂(需添加调整剂碳酸钠)等问题,进行了"先磷后铁、先浮后磁"工艺试验。结果表明,矿石在一段磨矿细度为-0.074 mm占40%的情况下,以BQ-2为捕收剂、水玻璃为调整剂,经1粗3精2扫闭路浮选流程选磷,获得了P_2O_5品位为31.58%、回收率为77.97%的磷精矿,浮选选磷尾矿经1次弱磁粗选抛尾—粗精矿再磨(-0.045 mm占84%)—2次弱磁精选流程选铁,获得了Fe品位为66.21%、回收率为47.03%的铁精矿。新工艺在取得理想选矿指标的同时,避免了选磷给矿的过磨和泥化问题,省去了磁选尾矿浓缩、脱泥作业,取消了碳酸钠的使用。In order to solve the problems of complicated process,serious sliming of iron tailings,phosphorus logs caused by mud removal operation,and the complicated reagent system of phosphorus flotation due to the beneficiation process "pre- iron and post-phosphorus"in Baiquan iron ore,the test process of "pre-ph6sphorus and post-iron,pre-flotation and post-mag- netic separation"was studied.The results showed that using closed-circuit flotation of one roughing-three cleaning-two scaveng- ing to treat with the raw ore under the conditions of first stage grinding to -0.074mm accounting for 40%,BQ-2as flotation col- lector and sodium silicate as regulator,respectively,phosphorus concentrate with P205grade of 31.58~/o and recovery of 77.97%could be obtained.The one time low intensity magnetic separation -rough concentrate regrind (-0.045mm 84%)--2 times low intensity magnetic separation process was adopted to deal with the phosphorus flotation tailings,iron concentrate with TFe grade of 66.21%and recovery of 47.03%could be obtained.Research results indicated that the new process not only could achieve ideal mineral processing indicators but may cut the concentrating and sliming process of phosphorus flotation feedings ,omit the addition of sodium carbonate,and avoid the problems of over grinding and sliming.

关 键 词：铁矿石 磷灰石 磁铁矿 先磁后浮 先浮后磁 

分 类 号：TD924.12[矿业工程—选矿] TD923.7