The flotation of inherently hydrophobic graphite in electrolyte solution
- Authors: Dung Kim Thi Nhu, Duoc Van Tran
Affiliations:
Trường Đại học Mỏ-Địa chất
- *Corresponding:This email address is being protected from spambots. You need JavaScript enabled to view it.
- Keywords: Flotation, Graphite, Electrolyte, Concentrate
- Received: 16th-Nov-2021
- Revised: 2nd-Dec-2021
- Accepted: 10th-Jan-2022
- Online: 30th-Apr-2022
- Section: Mineral Beneficiation and Processing
Abstract:
The results of flotation of minerals depend on factors, such as sludge concentration, pH, grinding
fineness, reagent regime. The unavoidable ions in a pulp such as Mg2+, Ca2+, and K+ have a significant
effect on the interaction for particles, especially for flotation of metallic sulfide minerals. In this study, the
effect of electrolytes (NaCl, KCl, MgCl2, MgSO4,…) on the flotation of inherently hydrophobic mineralgraphite
was studied. The ions through the electrolyte aqueous might destabilize the formation of water
film around particles, and this is beneficial to reagent adsorption. The result of graphite flotation in the
presence of electrolytes is that the recovery of the graphite concentrate increases and the C content in
the concentrate also increases compared to when flotation without electrolytes. The experiments provided
a new spectacle to study inherently hydrophobic mineral processing with electrolyte solution. The report
shows that mechanisms for the improved flotation of inherently hydrophobic graphite in electrolyte solution
and some test results with graphite ore samples from Nam Thi - Lao Cai.
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