@article{ART003274576},
author={Ye Shilong and Chen Zhengjie and Zhang Yonghang and Chen Xiuhua and Chen Xiaowei and Zhao Yaqi and Wu Dandan and Li Shaoyuan and Ma Wenhui},
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 - Ye Shilong
AU - Chen Zhengjie
AU - Zhang Yonghang
AU - Chen Xiuhua
AU - Chen Xiaowei
AU - Zhao Yaqi
AU - Wu Dandan
AU - Li Shaoyuan
AU - Ma Wenhui
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 -
Ye Shilong, Chen Zhengjie, Zhang Yonghang, Chen Xiuhua, Chen Xiaowei, Zhao Yaqi, Wu Dandan, Li Shaoyuan and Ma Wenhui. (2025). Synergistic enhancement of low-grade flake graphite flotation via ultrasonic cavitation and ionic-strength modulation. Carbon Letters, 35(6), 3121-3142.
Ye Shilong, Chen Zhengjie, Zhang Yonghang, Chen Xiuhua, Chen Xiaowei, Zhao Yaqi, Wu Dandan, Li Shaoyuan and Ma Wenhui. 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
Ye Shilong, Chen Zhengjie, Zhang Yonghang, Chen Xiuhua, Chen Xiaowei, Zhao Yaqi, Wu Dandan, Li Shaoyuan, Ma Wenhui "Synergistic enhancement of low-grade flake graphite flotation via ultrasonic cavitation and ionic-strength modulation" Carbon Letters 35.6 pp.3121-3142 (2025) : 3121.
Ye Shilong, Chen Zhengjie, Zhang Yonghang, Chen Xiuhua, Chen Xiaowei, Zhao Yaqi, Wu Dandan, Li Shaoyuan, Ma Wenhui. 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
Ye Shilong, Chen Zhengjie, Zhang Yonghang, Chen Xiuhua, Chen Xiaowei, Zhao Yaqi, Wu Dandan, Li Shaoyuan and Ma Wenhui. "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
Ye Shilong; Chen Zhengjie; Zhang Yonghang; Chen Xiuhua; Chen Xiaowei; Zhao Yaqi; Wu Dandan; Li Shaoyuan; Ma Wenhui. 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
Ye Shilong; Chen Zhengjie; Zhang Yonghang; Chen Xiuhua; Chen Xiaowei; Zhao Yaqi; Wu Dandan; Li Shaoyuan; Ma Wenhui. 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
Ye Shilong, Chen Zhengjie, Zhang Yonghang, Chen Xiuhua, Chen Xiaowei, Zhao Yaqi, Wu Dandan, Li Shaoyuan, Ma Wenhui. 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
Ye Shilong, Chen Zhengjie, Zhang Yonghang, Chen Xiuhua, Chen Xiaowei, Zhao Yaqi, Wu Dandan, Li Shaoyuan and Ma Wenhui. "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
