A novel oxidation reagent scheme to realize efficient flotation separation of chalcopyrite and pyrrhotite

Applied Surface Science, Journal Year: 2025, Volume and Issue: unknown, P. 162794 - 162794

Published: Feb. 1, 2025

Language: Английский

Utilization of a Solid Waste Inhibitor for the Clean Flotation Enrichment of Phosphate Ores

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 27, 2025

The accumulation of phosphogypsum (PG) in the phosphorus chemical industry poses significant environmental challenges. Therefore, developing a harmless utilization method is crucial for alleviating these burdens and promoting sustainable practices. In this study, PG was used as flotation inhibitor, enabling separation apatite dolomite based on main components dissolution behavior PG. A microflotation study revealed that 0.875 g/L selectively inhibited when sodium oleate (NaOL) concentration 1.5 × 10-4 mol/L, reducing recovery 76% to 10% at pH range 7-11. Conversely, remained above 90% 7-9 only slightly 9-11. When CaSO4·2H2O CaHPO4·2H2O were added inhibitors, they also dolomite, though their effects weaker than Measurements contact angles, zeta potentials, adsorption capacities indicated enhanced hydrophilicity hindering NaOL thereon, while it had little effect floatability apatite. Atomic force scanning electron microscopy selective adsorbed surface, altering its properties, weakly surface minimal impact properties. solution composition microthermal results showed CaSO4 CaHPO4 are effective inhibition. X-ray photoelectron spectroscopy time-of-flight secondary ion mass spectrometry confirmed Ca Mg sites surface. Molecular dynamics simulations interacts with can promote dolomite. Utilizing inhibitor provides novel approach environmentally safe use resources.

Language: Английский

Efficient flotation separation of cassiterite from fluorite using a novel depressant tetrasodium iminodisuccinate

Colloids and Surfaces A Physicochemical and Engineering Aspects, Journal Year: 2025, Volume and Issue: unknown, P. 137264 - 137264

Published: May 1, 2025