Impact of acid surface pretreatment on the hydrophobic agglomeration of micro-fine ilmenite and titanaugite in flotation

被引：1

作者：

Du, Yusheng ^{[2
]}

Meng, Qingyou ^{[1
]}

Yuan, Zhitao ^{[1
]}

Han, Chong ^{[2
]}

Li, Lixia ^{[1
]}

Lu, Jiwei ^{[1
]}

Liu, Ting ^{[3
]}

机构：

[1] Northeastern Univ, Sch Resources & Civil Engn, Shenyang 110819, Peoples R China

[2] Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China

[3] Ansteel Min Engn Corp, Anshan 114000, Peoples R China

来源：

MINERALS ENGINEERING | 2024年 / 218卷

关键词：

Micro-fine mineral; Acid surface pretreatment; Selective hydrophobic agglomeration; DISSOLUTION; ADSORPTION;

D O I：

10.1016/j.mineng.2024.109050

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Acid surface pretreatment was employed to realize the selective hydrophobic agglomeration of micro-fine ilmenite in flotation. Microflotation and artificially mixed mineral experiments manifested that after acid surface pretreatment, the recovery of micro-fine ilmenite with the increase of NaOL concentration and the floatability difference of micro-fine ilmenite and titanaugite increased significantly. Zeta potential and contact angle analyses suggested that acid surface pretreatment intensified the adsorption of NaOL on ilmenite surfaces while reducing it on titanaugite surfaces. Turbidity, optical microscope, and EDLVO theory analyses attested that the hydrophobic attraction dominated in a short particle spacing in NaOL solution. Following acid surface pretreatment, the hydrophobic agglomeration between micro-fine ilmenite particles enhanced in NaOL solution due to increased hydrophobic attraction. In contrast, the hydrophobic attraction and agglomeration between microfine titanaugite particles as well as between micro-fine ilmenite and titanaugite particles weakened. Overall, acid surface pretreatment improved the selective adsorption of NaOL and the selective hydrophobic agglomeration of micro-fine ilmenite, resulting in enhanced separation efficiency and recovery of micro-fine ilmenite.

引用

页数：8

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