@article{ART003274576},
author={Shilong Ye and Zhengjie Chen and Yonghang Zhang and Xiuhua Chen and Xiaowei Chen and Yaqi Zhao and Dandan Wu and Shaoyuan Li and Wenhui Ma},
title={Synergistic enhancement of low-grade flake graphite flotation via ultrasonic cavitation and ionic-strength modulation},
journal={Carbon Letters},
issn={1976-4251},
year={2025},
volume={35},
number={6},
pages={3121-3142},
doi={10.1007/s42823-025-00982-8}
TY - JOUR
AU - Shilong Ye
AU - Zhengjie Chen
AU - Yonghang Zhang
AU - Xiuhua Chen
AU - Xiaowei Chen
AU - Yaqi Zhao
AU - Dandan Wu
AU - Shaoyuan Li
AU - Wenhui Ma
TI - Synergistic enhancement of low-grade flake graphite flotation via ultrasonic cavitation and ionic-strength modulation
JO - Carbon Letters
PY - 2025
VL - 35
IS - 6
PB - Korean Carbon Society
SP - 3121
EP - 3142
SN - 1976-4251
AB - To enhance the fixed carbon content and recovery rate of flotation concentrates from low-grade natural flake graphite (NFG), this study employed synchronous ultrasonic flotation in combination with inorganic salt ion (NaCl) enhancement. Flotation experiments were conducted to investigate the synergistic effects of these two methods. X-ray photoelectron spectroscopy, contact angle analysis, laser particle-size analysis, Raman spectroscopy, infrared spectroscopy, zeta potential measurements, electron microscopy, and Debye length calculations confirmed that ultrasonic cavitation disrupted particle agglomeration and cleaned the graphite surface. This process generated fine micro-/nanobubbles with enhanced hydrophobicity, significantly improving concentrate recovery rates. NaCl addition compressed the double electric layer on particle surfaces and suppressed bubble coalescence, stabilizing the froth and promoting graphite–bubble adhesion, which markedly increased the fixed carbon content of the concentrate. The results demonstrated that through the integrated approach, low-grade NFG with an initial fixed carbon content of 7.98% was upgraded after rough processing to a concentrate containing 79.24% fixed carbon, with a recovery rate of 65.76%. These findings demonstrate that combining ultrasonic flotation with NaCl addition substantially improved both fixed carbon content and recovery rate in the concentrate. Overall, this study provides a novel technical pathway for the efficient utilization of low-grade graphite ore resources.
KW - Graphite;Flotation;Ultrasound;Inorganic salts
DO - 10.1007/s42823-025-00982-8
ER -
Shilong Ye, Zhengjie Chen, Yonghang Zhang, Xiuhua Chen, Xiaowei Chen, Yaqi Zhao, Dandan Wu, Shaoyuan Li and Wenhui Ma. (2025). Synergistic enhancement of low-grade flake graphite flotation via ultrasonic cavitation and ionic-strength modulation. Carbon Letters, 35(6), 3121-3142.
Shilong Ye, Zhengjie Chen, Yonghang Zhang, Xiuhua Chen, Xiaowei Chen, Yaqi Zhao, Dandan Wu, Shaoyuan Li and Wenhui Ma. 2025, "Synergistic enhancement of low-grade flake graphite flotation via ultrasonic cavitation and ionic-strength modulation", Carbon Letters, vol.35, no.6 pp.3121-3142. Available from: doi:10.1007/s42823-025-00982-8
Shilong Ye, Zhengjie Chen, Yonghang Zhang, Xiuhua Chen, Xiaowei Chen, Yaqi Zhao, Dandan Wu, Shaoyuan Li, Wenhui Ma "Synergistic enhancement of low-grade flake graphite flotation via ultrasonic cavitation and ionic-strength modulation" Carbon Letters 35.6 pp.3121-3142 (2025) : 3121.
Shilong Ye, Zhengjie Chen, Yonghang Zhang, Xiuhua Chen, Xiaowei Chen, Yaqi Zhao, Dandan Wu, Shaoyuan Li, Wenhui Ma. Synergistic enhancement of low-grade flake graphite flotation via ultrasonic cavitation and ionic-strength modulation. 2025; 35(6), 3121-3142. Available from: doi:10.1007/s42823-025-00982-8
Shilong Ye, Zhengjie Chen, Yonghang Zhang, Xiuhua Chen, Xiaowei Chen, Yaqi Zhao, Dandan Wu, Shaoyuan Li and Wenhui Ma. "Synergistic enhancement of low-grade flake graphite flotation via ultrasonic cavitation and ionic-strength modulation" Carbon Letters 35, no.6 (2025) : 3121-3142.doi: 10.1007/s42823-025-00982-8
Shilong Ye; Zhengjie Chen; Yonghang Zhang; Xiuhua Chen; Xiaowei Chen; Yaqi Zhao; Dandan Wu; Shaoyuan Li; Wenhui Ma. Synergistic enhancement of low-grade flake graphite flotation via ultrasonic cavitation and ionic-strength modulation. Carbon Letters, 35(6), 3121-3142. doi: 10.1007/s42823-025-00982-8
Shilong Ye; Zhengjie Chen; Yonghang Zhang; Xiuhua Chen; Xiaowei Chen; Yaqi Zhao; Dandan Wu; Shaoyuan Li; Wenhui Ma. Synergistic enhancement of low-grade flake graphite flotation via ultrasonic cavitation and ionic-strength modulation. Carbon Letters. 2025; 35(6) 3121-3142. doi: 10.1007/s42823-025-00982-8
Shilong Ye, Zhengjie Chen, Yonghang Zhang, Xiuhua Chen, Xiaowei Chen, Yaqi Zhao, Dandan Wu, Shaoyuan Li, Wenhui Ma. Synergistic enhancement of low-grade flake graphite flotation via ultrasonic cavitation and ionic-strength modulation. 2025; 35(6), 3121-3142. Available from: doi:10.1007/s42823-025-00982-8
Shilong Ye, Zhengjie Chen, Yonghang Zhang, Xiuhua Chen, Xiaowei Chen, Yaqi Zhao, Dandan Wu, Shaoyuan Li and Wenhui Ma. "Synergistic enhancement of low-grade flake graphite flotation via ultrasonic cavitation and ionic-strength modulation" Carbon Letters 35, no.6 (2025) : 3121-3142.doi: 10.1007/s42823-025-00982-8
