Comprehensive Recovery of Cu and Mo from Molybdenum Cleaner Tailings by Selective Flocculation Flotation

PENG Weijun; LYU Shuai; LUO Weizhe; QI Mengyao; ZHANG Longyu; CHEN Xianggen; CHAO Yande; WANG Wei

doi:10.13779/j.cnki.issn1001-0076.2024.08.003

2024 Vol. 44, No. 6

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Article navigation > Conservation and Utilization of Mineral Resources > 2024 > 44(6): 80-87

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PENG Weijun, LYU Shuai, LUO Weizhe, QI Mengyao, ZHANG Longyu, CHEN Xianggen, CHAO Yande, WANG Wei. Comprehensive Recovery of Cu and Mo from Molybdenum Cleaner Tailings by Selective Flocculation Flotation[J]. Conservation and Utilization of Mineral Resources, 2024, 44(6): 80-87. doi: 10.13779/j.cnki.issn1001-0076.2024.08.003

Citation:

PENG Weijun, LYU Shuai, LUO Weizhe, QI Mengyao, ZHANG Longyu, CHEN Xianggen, CHAO Yande, WANG Wei. Comprehensive Recovery of Cu and Mo from Molybdenum Cleaner Tailings by Selective Flocculation Flotation[J]. Conservation and Utilization of Mineral Resources, 2024, 44(6): 80-87. doi: 10.13779/j.cnki.issn1001-0076.2024.08.003

Comprehensive Recovery of Cu and Mo from Molybdenum Cleaner Tailings by Selective Flocculation Flotation

1.
Zhongyuan Critical Metals Laboratory (Zhengzhou University), Zhengzhou University, Zhengzhou 450000, Henan, China
2.
School of Chemical Engineering, Zhengzhou University, Zhengzhou 450000, Henan, China
3.
The Key Lab of Critical Metals Minerals Supernormal Enrichment and Extraction, Ministry of Education, Zhengzhou 450001, Henan, China
4.
Luanchuan Longyu Molybdenum Industry Co., Ltd, Luoyang 471500, Henan, China
5.
School of Chemical Engineering and Technology, China University of Mining and technology, Xuzhou 221000, Jiangsu, China

More Information

Corresponding author: PENG Weijun, pwj@zzu.edu.cn

Received Date: 16 March 2024

Publish Date: 15 December 2024

Abstract

Abstract

The granularity of a molybdenum cleaner tailings from Henan Province was fine, with −23 μm grade accounting for 65%. The Cu and Mo grades of the tailings were 0.20% and 0.08%, respectively, which had a certain recovery value. PADD flocculant was synthesized by introducing hydrophobic monomer − dodecyl gluconide on acrylamide, which had a good hydrophobicity. In the work, PADD was used as flocculant to recovery fine Cu−Mo sulfide ore from the molybdenum cleaner tailings via selective flocculation flotation. Under the conditions of pulp pH 4.2, the dosages of sodium hempetaphosphate, PADD, cupric sulfate, kerosene, ethylthiamine and 2# oil were 500 g/t, 150 g/t, 100 g/t, 170 g/t, 151 g/t and 60 g/t, respectively, the closed circuit of once roughing flotation, once scavenging flotation, twice cleaning flotation, and the middles I, II and III were combined return to the roughing flotation were performed. The obtained final mixed concentrate had the Cu grade of 12.054%, Cu recovery of 89.98%, Mo grade of 3.214%, and Mo recovery of 64.20%, which efficiently comprehensive recovered the valuable Cu and Mo from the molybdenum cleaner tailings. Based on the strong hydrophobicity, PADD selectively flocculated micro−fine copper molybdenum sulfide ore mainly through the hydrophobic force, and then significantly improved the selective flocculation flotation effect of micro−fine copper molybdenum sulfide ore in molybdenum tailings.
- molybdenum cleaner tailings /
- selective flocculation flotation /
- Cu−Mo sulfide ore /
- comprehensive recovery

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