某选钛厂入库尾矿选矿工艺研究  

Beneficiation of Tailings in Tailings Pond of Titanium Processing Plant

作　　者：高煜 卢东方[1] 刘振强 王毓华[1] 郑霞裕[1] 陈福林 GAO Yu;LU Dongfang;LIU Zhenqiang;WANG Yuhua;ZHENG Xiayu;CHEN Fulin(School of Minerals Processing and Bioengineering,Central South University,Changsha 410083,Hunan,China;Pangang Group Research Institute Co Ltd,Panzhihua 617000,Sichuan,China)

机构地区：[1]中南大学资源加工与生物工程学院,湖南长沙410083 [2]攀钢集团研究院有限公司,四川攀枝花617000

出　　处：《矿冶工程》2023年第6期74-78,共5页Mining and Metallurgical Engineering

基　　金：国家重点研发计划(2021YFC2903202);钒钛资源综合利用国家重点实验室资助项目(2021P4FZG05A)。

摘　　要：为从某选钛厂尾矿中有效回收钛资源、提高原矿相对利用率,对TiO_(2)品位5.81%的选钛厂入库尾矿进行了选矿工艺研究,制定了重选-磁选工艺流程,并研究了磁选过程中磁场强度,重选过程中上升水流量、给矿速度、给矿浓度等对钛铁矿选别指标的影响。结果表明,经+38μm粒级重选,-38μm粒级分级底流重选、分级溢流磁选的重选-磁选联合工艺选别,能够获得TiO_(2)品位16.08%、回收率62.63%的粗精矿,抛出产率77.41%、TiO_(2)品位2.39%的尾矿,大大减少了后续浮选流程入矿量。To effectively recover titanium resources in the tailings from a titanium processing plant and improve the relative utilization rate of raw ore,beneficiation of the tailings with a TiO_(2) grade of 5.81%from the tailings pond was studied.A gravity and magnetic separation process were proposed and the influences of magnetic field intensity,rising water flow rate,feeding rate and feeding concentration on ilmenite separation indices were studied.The results show that after a gravity separation of+38μm range,a gravity separation of underflow from-38μm classification and magnetic separation of overflow from-38μm classification,a rough concentrate with TiO_(2) grade of 16.08%was obtained at recovery of 62.63%,while tailings with a yield of 77.41%and TiO_(2) grade of 2.39%was cast off.Consequently,the feeding amount of succeeding flotation can be greatly reduced.

关 键 词：钒钛磁铁矿 攀枝花 钛精矿 尾矿综合利用 钛铁矿 重选 磁选 逆流重选柱 

分 类 号：TD981[矿业工程—选矿]