Effect of water-in-oil and oil-in-water with Span 80 on coal flotation

Impact of Processing Parameters on Contactless EmulsificationviaCorona Discharge

“…The emulsions were formed using a continuous phase of silicone oils with kinematic viscosities of ν = 50, 100, 200, 350, and 1000 cSt (μ MicroLubrol, Clifton, NJ, USA) gently mixed with 1 wt % Span 80 as the surfactant (Sigma Aaldrich, St. Louis, MO, USA). The Span 80 was chosen here due to its abundance and frequent use in various industries such as food, oil processing, cosmetics, and pharmaceutical applications to form stable W/O emulsions. , The mixture was then placed in an ultrasonic cleaner bath (Vevor, Los Angeles, CA, USA) for 15 min, and this process was repeated three times with 30 min cooling intervals. The cooling process was intentionally added to prevent any property change, as longer periods of ultrasonic mixing might increase the temperature of the mixture.…”

“…The Span 80 was chosen here due to its abundance and frequent use in various industries such as food, oil processing, cosmetics, and pharmaceutical applications to form stable W/O emulsions. 101 , 102 The mixture was then placed in an ultrasonic cleaner bath (Vevor, Los Angeles, CA, USA) for 15 min, and this process was repeated three times with 30 min cooling intervals. The cooling process was intentionally added to prevent any property change, as longer periods of ultrasonic mixing might increase the temperature of the mixture.…”

Review of Ultrasound-Assisted Recycling and Utilization of Cathode Materials from Spent Lithium-Ion Batteries: State-of-the-Art and Outlook

“…Power ultrasonic waves have a high power density, and the cavitation phenomenon is mainly transient cavitation. , Bubbles continue to grow during the negative pressure phase, and when the positive sound pressure arrives, bubbles continue to grow due to inertia until they reach their maximum radius and then rapidly contact until they collapse and close. When the bubble rapidly collapses, the gas or vapor inside the bubble is compressed, and in the extremely short time of the bubble’s collapse, it can generate enormous energy locally (10 18 kW/m 3 ). , Shock waves and microjets are the physical effects of powerful ultrasonic waves.…”

“…The treatment capacity of hydraulic cavitation far exceeds that of ultrasound, and the combined technology of hydraulic and ultrasonic cavitation provides a solution to issues of low treatment capacity in the industrial application of ultrasound . In addition, the strong potential in the resource recovery of cathode materials of SLIBs could be received by combining ultrasound and other technologies, such as pyrolysis technology, ,, microwave technology, , magnetic separation technology, flotation technology, ,,, and advanced oxidation process. , The enhancement effect generated by ultrasound technology is uneven. The strengthening effect is good at locations that are close to the ultrasonic emission source, but poor at locations that are far away, which is more pronounced in an amplification equipment .…”

A comparative study on the influence of single and combined ultrasounds assisted flake graphite flotation

“…Mineral flotation is a vital separation technique [1] , [2] , and diverse methods have been explored to enhance its efficiency, including the utilization of magnetic field [3] , sound field [4] , [5] , electric field [6] , [7] , etc. Ultrasound technology has gained significant attention due to its accelerating development and wide applications.…”