从某磁选尾矿浮选回收钛铁矿工艺试验研究  

Experimental study on the technology of magnetic separation tailings flotation recovery of ilmenite

作　　者：纪振明 赵强 张鹏羽 杨卓 JI Zhenming;ZHAO Qiang;ZHANG Pengyu;YANG Zhuo(Zhongye Changtian International Engineering Co.,Ltd.,,Changsha410205,Hunan,China)

机构地区：[1]中冶长天国际工程有限责任公司,湖南长沙410205

出　　处：《工程建设》2024年第8期1-6,共6页Engineering Construction

基　　金：国家重点研发计划资助项目(2021YFC2902305)。

摘　　要：钛是一种重要的战略性稀有金属资源。我国钛资源储量丰富,其主要以钛铁矿的形式赋存,但随着禀赋较高的资源不断被开采,矿石逐渐呈现品位低、多脉石矿物伴生的特点,导致综合回收的难度较大。文章以某低品位难选钛铁矿弱磁作业后的尾矿为研究对象,对其进行了浮选回收试验工艺试验研究。研究结果表明:在以硫酸作为矿浆pH调整剂、水玻璃作为分散剂、硝酸铅为活化剂、MOH为捕收剂,在给矿含TiO_(2) 13.10%、TFe 10.25%的情况下,经一粗三精两扫的闭路流程选别,可获得了TiO_(2)品位为46.12%、含TFe 33.03%、钛回收率57.05%的钛精矿,选矿指标较好、钛精矿纯度较高,实现了该难选钛铁矿资源的高效回收利用。Titanium is an important strategic rare metal resource.China has abundant titanium resources, mainly in the form of ilmenite.However, with the continuous exploitation of resources with high endowments, the ore gradually presents the characteristics of low grade and multiple gangue minerals, which leads to the difficulty of comprehensive recovery.The flotation recovery process of the tailings of a low-grade refractory ilmenite after weak magnetic operation is studied.In the process of flotation, the sulfuric acid is used as the pH regulator for the slurry;the water glass is used as dispersant;the lead nitrate is applied as activator and MOH is used as collector.The closed circuit process of one roughing, three refining and two sweeping can obtain titanium concentrate with TiO2 grade of 46.12%,TFe content of 33.03%,titanium recovery rate of 57.05%.The beneficiation index is good and the purity of the titanium concentrate is high, realizing the efficient recovery and utilization of the refractory ilmenite resources.

关 键 词：钛铁矿 浮选 低品位 难选 高效回收 

分 类 号：TD923[矿业工程—选矿]