COUNTER-CURRENT LIQUID-LIQUID EXTRACTION IN ANNULUS COLUMNS WITH SHEARING MOTION

Technical Report · Mon Sep 22 04:00:00 EDT 1952

OSTI ID:4325148

Spence, R; Streeton, R J.W.

The rotary extractor has been investigated both from the point of view of mechanism of operation and from the point of view of utility for the extraction of uranium. It has been shown that there is a hyperbolic relationship between h/d and d/R/sub 1/ (where R/sub 1/ is the radius of the rotor, d is the width of the annulus, and h is the height of a single vertex). The height of equivalent theoretical stage (H.E.T.S.) varies as the cube root of the cross sectional area (hd) of the vertices and combination of these two relationships gives an expression for the H.E.T.S. in terms of R/sub 1/ and d, viz: H = const. (d/sub 4/ + R/sup 2/d/sup 2//3)/sup 1/6 . The expression holds over the whole of the range of sizes studied (R/sub 1/ = 0.075--6.66 cm; d =0.05--1.6 cm). The rate of transfer of uranyl nitrate across the interface between drops and continuous phase in the butex-aqueous system has been found to depend on the transport of the solvated uranyl nitrate molecule through a solvent film at the interface, The rate of transfer in the case of a single drop in the rotary column is only about twice that which is found for a drop falling freely through a static continuous phase. (auth)

• Research Organization: Gt. Brit. Atomic Energy Research Establishment, Harwell, Berks, England
• NSA Number: NSA-12-002816
• OSTI ID: 4325148
• Report Number(s): AERE-C/R-933
• Country of Publication: United Kingdom
• Language: English

Related Subjects

CHEMISTRY
COUNTER CURRENT
EQUATIONS
EXTRACTION COLUMNS
LIQUIDS
MATHEMATICS
REACTION KINETICS
SOLVENT EXTRACTION
SOLVENTS
TRANSPORT
URANIUM
URANYL NITRATES
USES
WATER