Suspending solid particles in an agitated conical-bottom tank

✍ Scribed by L. Musil; J. Vlk

• Publisher: Elsevier Science
• Year: 1978
• Tongue: English
• Weight: 744 KB
• Volume: 33
• Category: Article
• ISSN: 0009-2509
• DOI: 10.1016/0009-2509(78)85018-0

✦ Synopsis

An investigation of the critical impeller speed at which particulate solnds become fully suspended in the hquid by mechanical sturring has been carried out Based on balances of kinetic energy, two theoretical equations were denved gaving the cntical impeller speed as a function of physical properties of the mixed slarry as well as of several selected geometrical parameters of the mixing device

Both theoretical equations were employed for the treatment of results obtained by experimentation

(\rightarrow) the first one which was derived under the assumption of no loss of energy correlated well data obtained in the experimental region where impeller clearance had no effect upon the critical impeller speed

(\rightarrow) the second one which includes loss of energy due to its viscous dissipation agreed well with the experimental results showing a linear dependence of the critical impeller speed upon the impeller clearance