Nanobubbles Adsorption and Its Role in Enhancing Fine Argentite Flotation

Area of Science:

• Mineral Processing
• Surface Chemistry
• Nanotechnology

Background:

• Efficient recovery of fine argentite from polymetallic lead-zinc (Pb-Zn) sulfide ores presents significant challenges.
• Understanding the surface interactions of fine mineral particles is crucial for optimizing flotation processes.

Purpose of the Study:

• To investigate the adsorption of nanobubbles (NBs) on argentite surfaces.
• To evaluate the role of NBs in enhancing fine argentite flotation.

Main Methods:

• Contact angle measurements
• Adsorption capacity analysis
• Infrared spectroscopy
• Zeta potential measurements
• Turbidity tests
• Microscopic imaging
• Scanning electron microscopy
• Microflotation experiments

Main Results:

• NBs demonstrated long-term stability and adsorbed onto the argentite surface.
• NB adsorption enhanced surface hydrophobicity and promoted particle agglomeration by reducing electrostatic repulsion.
• NBs formed a thin film, decreasing sodium diethyldithiocarbamate adsorption.
• Microflotation tests showed considerably enhanced argentite recovery with NB introduction.

Conclusions:

• Nanobubble adsorption is an effective strategy for improving fine argentite flotation.
• NBs alter argentite surface properties, leading to enhanced recovery in polymetallic ores.