Archives
 
Year 2025
 
Issue 4 [08 - 2025], Year XXXIV

Copper recovery from slow-cooled copper slag of Lao Cai copper smelting II by flotation method using a mixture of collectors

https://mij.hoimovietnam.vn/en/archives?article=25041

  • Affiliations:

    Hanoi University of Mining and Geology, 18 Vien Str., Ha Noi, Vietnam

  • *Corresponding:
    This email address is being protected from spambots. You need JavaScript enabled to view it.
  • Received: 4th-Oct-2025
  • Revised: 15th-May-2025
  • Accepted: 19th-May-2025
  • Online: 1st-Aug-2025
Pages: 11 - 18
Views: 53
View onlineView online
Downloads: 3
Downdload PDF
★★★★★Rating: , Total rating: 0
  • ★
  • ★
  • ★
  • ★
  • ★
Yours rating

Abstract:

This paper presents the difference in the efficiency of copper slag flotation when using different types of collector mixtures, such as butyl xanthate/dithiophosphate, butyl xanthate/amine xanthate, and butyl xanthate combined with surface sulfidation reagent Na2S at different grinding finenesses of copper slag and different collector mixture dosages. Experimental results show that the copper recovery ratio with butyl xanthate/dithiophosphate collector mixture is the highest. The closed-circuit flotation flowsheet with one rougher stage, two scavenger stages using butyl xanthate/dithiophosphate collector mixture obtained copper slag concentrate with a grade content of over 20% Cu, tailings with a grade content of approximately 0.2% Cu, and the actual copper recovery into the concentrate product reached over 90%..

How to Cite
Vu, C.Thi, Nhu, D.Kim Thi, Pham, H.Thanh and Pham, N.Thi 2025. Copper recovery from slow-cooled copper slag of Lao Cai copper smelting II by flotation method using a mixture of collectors (in Vietnamese). Mining Industry Journal. XXXIV, 4 (Aug, 2025), 11-18. .
References

[1]. B.J. Bradshaw and C.T. O'Connor, (2000). FLOTATION | Bubble – Particle Adherence: Synergistic Effect of Reagents. In book: Encyclopedia of Separation Science.

DOI: 10.1016/B0-12-226770-2/01311-9

[2]. Bradshaw, D. J. and O'Connor, C. T. (1996). The flotation of low grade pyrite ores using mixtures of collectors. Hidden Wealth Conference, Johannesburg, South Africa, 1 - 3 October 1996. Marshalltown, SA: South African Institute of Mining and Metallurgy.

[3]. Gorai and Premchand, (2003). Characteristica and utilisation of copper slag- a review. Resour. Consev. Recycl, 39, 299-313

[4]. Helbig, C., Bradshaw, D.J., Harris, P.J., O. Connor, C.T., Baldauf, H., (2000). The synergistic interactions of mixtures of thiol collectors in the flotation of sulphide minerals. Presented at XXI International Mineral Processing Congress, Rome, Italy.

[5]. Liu et al, (2020). Otimizing the Crystalline State of Cu Slag by Na2CO3 to improve Cu Recovery by Flotation. Minerals, 10.

[6]. MINGIONE P.A., (1984). Use of dialkyl and diaryl dithiophosphate promoters as mineral flotation agents, Institution of Mining and Metallurgy, London, 19-24.

[7]. N.O. Lotter, D.J. Bradshaw, (2010). The formulation and use of mixed collectors in sulphide flotation, Minerals Engineering, Volume 23, Issues 11–13, October 2010, Pages 945-951.

[8]. Tian et al, (2021). Comprehensive review on metallurgical recycling and cleaning of copper slag, Conserv. Recycling, 168 (2021), 105366.

[9]. Vestola et al, (2010). Acid bioleaching of solid waste materials from copper, steel and recycling industries. Hydrometallurgy, 103, 74-79.

[10]. Zhou et al, (2021). Mineralogical and morphological factors affecting the separation of copper and arsenic in flash copper smelting slag flotation beneficiation. Journal of Hazardous Materials, 410, 123293.

Other articles