A study of bubble size/shape evolution in microbubble countercurrent contacting flotation column

Abstract

Cationic collectors are widely used in the flotation of iron ore, silicate, oxides, and so forth. At this stage, so much research has been carried out on flotation column cells, but more attention needs to be paid to the hydrodynamic properties in the presence of cationic collectors in cells. In order to study foaming performance and hydrodynamic characteristics in the presence of GE609, the bubble characteristics are studied in an experimental scale flotation column. A high-speed camera recorder is used to take bubbles' images, and the bubble size and shape under different conditions is measured by image analysis. This paper aims to explore the effect of dispersed gas and continuous liquid velocities on the bubble size and aspect ratio at different axial heights in a countercurrent flotation column in the presence and absence of GE609. In the

A Review of Ultrasonic Treatment in Mineral Flotation: Mechanism and Recent Development

“…The size range of the mineral in the flotation process must be about 20-150 µm to achieve a satisfactory flotation effect. Generally, the optimal flotation size range is affected by factors such as flotation unit type [25], bubble size [26], particle size [27,28], froth stability/thickness [26], reagent [29], turbulence intensity [30,31], etc. In this technique, components such as particles, oil droplets, contaminants, etc., are separated from the mixture based on their hydrophilic or hy- In the 19th century, flotation was the most innovative and efficient mining technique, used to process over two billion tons of mineral resources per year [7,8].…”