微细粒级钛铁矿的选矿预处理研究  

Study on Beneficiation Pretreatment of Fine-grained Ilmenite

作　　者：梁雪崟 叶国华[1] 胡渝杰 陈子杨 朱思琴 亢选雄 LIANG Xueyin;YE Guohua;HU Yujie;CHEN Ziyang;ZHU Siqin;KANG Xuanziong(Faculty of Land Resource Engineering,Kunming University of Science and Technology,Kunming 650093,China;State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization,Kunming 650093,China)

机构地区：[1]昆明理工大学国土资源工程学院,昆明650093 [2]省部共建复杂有色金属资源清洁利用国家重点实验室,昆明650093

出　　处：《有色金属（选矿部分）》2023年第3期70-75,共6页Nonferrous Metals（Mineral Processing Section）

基　　金：国家自然科学基金资助项目(51964028)。

摘　　要：攀枝花红格南矿区尾矿库钛铁矿TiO2平均含量约为7.01%,钛主要集中在钛铁矿中,大部分以独立形式赋存,少部分与铁和钒以类质同像形式赋存在钛磁铁矿中。在成本较低的情况下,为了提高低品位微细粒级钛铁矿的选别指标,采用选择性分散絮凝—高冲次高梯度磁选新工艺对矿样进行预处理,并考察选择性分散絮凝药剂的种类、用量以及磁选的冲次等主要因素对低品位微细粒钛铁矿选别指标的影响。结果表明,在选择性分散絮凝药剂FX-3用量为700g/t、强磁磁选冲次为350次/min的最佳试验条件下,获得的钛精矿TiO2品位和回收率分别为24.93%和61.23%。在磁选试验前添加选择性分散絮凝药剂FX-3,使微细粒钛矿物和脉石颗粒稳定地分散在矿浆中,并相互作用形成不稳定的矿物颗粒,并通过“桥联”效应逐渐变成絮状物,在持续搅拌作用下形成更稳定的絮团,从而增加目标矿物颗粒的表观尺寸,有效地提高强磁分选效果和作用在钛矿物颗粒上的分选力。The content of TiOz in ilmenite in the tailings reservoir of Panzhihua Honggenan mining area was 7.01%.Titanium was mainly concentrated in ilmenite,most of which occured in an independent form,and a small part of which occured in titanomagnetite in the form of isomorphism with iron and vanadium.Under the condition of low cost,in order to improve the separation index of low-grade fine ilmenite,a new process of selective dispersion flocculation-high flushing frequency and high gradient magnetic separation was used to pretreat the ore samples.The effects of the main factors such as the type and dosage of selective dispersion flocculant and the flushing frequency of magnetic separation on the separation index of low-grade fine ilmenite were investigated.The results showed that the grade and recovery of titanium concentrate were 30.18%and 55.79%,respectively,under the optimal experimental conditions of selective dispersion flocculant FX-3 dosage of 700 g/t and magnetic separation stroke times of 350 times/min.The selective dispersing flocculating agent FX-3 was added before the magnetic separation test,so that the ultrafine titanium mineral and gangue particles were stably dispersed in the ore pulp,interacted with each other to form unstable mineral particles,and gradually became floc through the bridging effect,and formed more stable floc under the action of continuous stirring,thereby increasing the apparent size of the target mineral particles,so as to increase the apparent size of the target mineral particles and effectively improve the strong magnetic separation effect and the separation force acting on the titanium mineral particles.

关 键 词：微细粒 钛铁矿 分散 絮凝 磁选 

分 类 号：TD952[矿业工程—选矿]