Principles and operation of an air operated mixer‐settler

Abstract

A mixer-settler for continuous countercurrent solvent extraction is described in which the mixing and pumping of the liquid phases are achieved by air streams. The operating principles of this mixer-settler are presented in theory and confirmed by experiment. -Measurements include interface heights, capacity, air requirements and entrainment of aqueous phase in the solvent under various operating conditions.The main advantages claimed for this unit are. Mechanical simplicity and consequent freedom from maintenance. Pumps and interface controllers are not required between individual stages. Compactness for a given separation. Low energy requirements. HE nuclear power reactors to be built in Canada in

Stirred Tanks and Mixers for Liquid Extraction

“…Although gas agitation has generally7 been considered an uneconomical method of applying mixing power, there is actually7 relatively little in the way of quantitative data with which to judge its effectiveness in contacting two liquids. Thornton (51) described an air-mixed mixer-settler, and Mathers and Winter (26) provided some data.…”

Mixing. Unit Operations Review

“…The design of a mixer-settler for liquid-liquid contacting without the use of interstage pumps was described by Williams, Lowes, and Tanner (46). A mixer and settler system operated by an air stream to provide pumping and mixing of the liquid phases was described by Mathers and Winter (27). Performance data are given for one system.…”