ABSTRACT
An air-lift pump works on the principle that air is injected, in the form of small bubbles, into a near vertical pipe filled with liquid, so that the mixture then has a lower S. G. and upward movement results (1); if solids are entrained at the bottom of the pipe, a three-phase mixture is eventually produced (41). Refs. 41 and 42 give theoretical analyses for transporting settling slurries and homogeneous shear-thinning suspensions respectively by the air-lift principle.
