Separation of finest particles in hydrocyclones

Fish hook effect in centrifugal classifiers – a further analysis

“…Zhu et al (2012a) report that with increasing coarseness of the material the fish hook becomes more prominent. A similar trend is reported by Neesse et al (2004) and Schubert (2004Schubert ( , 2010.…”

“…• Neesse et al (2004) report that the depth increases from 0.01 to 0.04 and reduces as the volumetric fraction of solids, C v increases to 0.25. Majumder et al (2007).…”

“…It does not include those occurrences when sizing analyses were carried out with early models of instruments based on laser diffractometry. Also, we have not included such reports where details of the instrument used for sizing analyses were not available or vague (for example, Dueck et al, 2014;Neesse et al, 2004;Farghaly et al, 2010;Aydogan and Ergun, 2010;Dueck et al, 2010 etc.). …”

“…1 (Neesse et al, 2004;Schubert, 2004Schubert, , 2010Minkov and Dueck, 2012;Dueck et al, 2012a etc. ).…”

Oil–water separation using hydrocyclones enhanced by air bubbles

“…With considerable efforts in the research and development, hydrocyclones are now widely used in various industries to separate two components of different densities with the aid of the strong centrifugal force created by the swirling flow (Slack et al, 2000;Petty and Parks, 2001). It was originally applied in the particle-liquid separation, and lately it has been used in liquid-liquid and air-liquid separation as an alternative to gravity based on conventional separators (Pasquier and Cilliers, 2000;Neesse et al, 2004;Schwerzler, 2005). However, hydrocyclones have the fatal drawback of low separation efficiency when the dispersed oil droplet diameter is less than 15 m. In order to improve the removal of oil from water by hydrocyclones, researchers have developed a number of new-type hydrocyclones, such as magnetic hydrocyclone (Shen and Finch, 1990;Freeman et al, 1994), direct current hydrocyclone (Pratarn et al, 2006), etc.…”