新型捕收剂DTL-1对悬浮焙烧三水铝石的浮选试验  

Flotation Tests of a New Collector DTL-1 on Suspension Roasted Gibbsite

作　　者：朱一民[1,2] 王燕 张婧[2] 谷晓恬 李艳军 ZHU Yimin;WANG Yan;ZHANG Jing;GU Xiaotian;LI Yanjun(School of Resources and Civil Engineering,Northeastern University,Shenyang 110819,China;National-local Joint Engineering Research Center of High-efficient Exploitation Technology for Refractory Iron Ore Resources,Shenyang 110819,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]难采选铁矿资源高效开发利用技术国家地方联合工程研究中心,辽宁沈阳110819

出　　处：《金属矿山》2020年第9期131-136,共6页Metal Mine

基　　金：国家自然科学基金项目(编号:51774069,51974067)。

摘　　要：阴离子捕收剂DTL-1是东北大学为悬浮焙烧—磁选铁精矿反浮选脱铝而研制的新型捕收剂,通过捕收剂DTL-1对三水铝石单矿物悬浮焙烧后的铝矿样以及铝矿样和赤铁矿单矿物悬浮焙烧—磁选后的铁矿样组成的人工混合矿进行浮选试验,以检验捕收剂DTL-1的脱铝效果。结果表明:在常温条件下,DTL-1对铝矿样的捕收效果较好,当pH值为8.0时,单矿物浮选试验可获得Al2O3回收率91.21%的指标,人工混合矿(铁矿样与铝矿样的质量比为15.67∶1,Al2O3品位约为5.95%)浮选试验可获得TFe品位70.67%,TFe回收率76.11%,Al2O3品位1.93%,铝的脱除率为74.72%的选别指标。采用表面动电位和红外光谱检测对捕收剂与铝矿样的作用机理进行研究,结果表明:捕收剂DTL-1与铝矿样之间存在着静电吸附、氢键吸附和化学吸附。这说明DTL-1是一种可用于悬浮焙烧—磁选铁精矿反浮选脱铝的新型常温阴离子捕收剂。Anionic collector DTL-1 was a new collector developed by Northeastern University for the reverse flotation dealumination test of suspension roasting magnetic separation iron concentrate.Flotation tests were carried out by collector DTL-1 on the aluminum mineral sample which was puregibbsite treated by suspension roasting and the artificial mixed minerals of aluminum mineral sample and hematite mineral sample which was pure hematite and pure gibbsite treated by suspension roasting-magnetic to test the dealumination effect of collector DTL-1.The results showed that DTL-1 had a good effect on the collection of aluminum mineral at room temperature.In the artificial mixed minerals,the mass ratio of iron mineral sample to aluminum mineral sample was 15.67-1,the grade of A1203 was about 5.95%.When the pH value was 8.0,the recovery rate of A1203 could be 91.21% in the single mineral flotation test,the grade of TFe could be 70.67%,the recovey rate of TFe could be 76.11%,the grade of A1203 could be 1.93% and the removal rate of aluminum could be 74.72% in the artificial mixed minerals flotation test.The adsorption mechanism were studied by Zeta potential measurements and Fourier transform infrared spectrum.The experimental results showed that there were electrostatic adsorption,hydrogen bond adsorption and chemisorption between collector DTL-1 and aluminum mineral sample.This showed that DTL-1 was a new type of room temperature anionic collector which could be used in the reverse flotation dealumination of suspension roasting magnetic separation iron concentrate.

关 键 词：三水铝石 阴离子捕收剂DTL-1 浮选 悬浮焙烧 

分 类 号：TD923[矿业工程—选矿]