Enhanced hematite depression
Sodium sulfite combined with heat-digested starch depresses fine hematite flotation more effectively than starch alone, via stronger adsorption, greater hydrophilicity, and selective flocculation.
Ying, Guan · Yonghao, Li · Pan, Liang · Yao, Wei · Zhang, Ming
Minerals Engineering 2025
Single and mixed minerals flotation showed SHS outperformed HS in depressing fine hematite flotation
Compared to HS, SHS adsorbed more strongly on hematite and imparted greater surface hydrophilicity
SHS induced more efficient and selective flocculation of hematite