Method for dispersing two phases in a solvent extraction process

Details Method for dispersing two phases in a solvent extraction process Method for dispersing two phases in a solvent extraction process

1986-11-13

1988-05-31

Petrakes, John

Agitating

Stirrer within stationary mixing chamber

Pump type

366136, 366348, B01F 308

Patent

active

047476940

ABSTRACT:
The invention relates to a method for dispersing the two liquid phases of a solvent extraction process well together, for controlling the desired type of dispersion and for raising the created dispersion to a level essentially higher than the liquid surface in the mixing tank. In the apparatus of the invention, to the circulation cylinder (6) of the mixer there is connected the heavy phase return conduit (27) and the light phase return conduit (29) entering from the settler of the same extraction step. In the top part of the mixer, coaxially with the turbine pump (9), there is installed the dispersion pump (12) where the dispersion rises to above the liquid surface (8) of the mixer through 2-24 rising pipes (15). The top ends of the rising pipes (15) are connected to the circular pipe (18), wherefrom the dispersion flow is conducted to the next stage through the collecting trough (22).

REFERENCES:
patent: 905025 (1908-11-01), Trent
patent: 2180301 (1939-11-01), Saylor
patent: 4235602 (1980-11-01), Meyer et al.
patent: 4251502 (1981-02-01), Forster
patent: 4358206 (1982-11-01), Schutte
patent: 4628391 (1986-12-01), Nyman et al.
The Outokumpu Mixer-Settler System: A New Design Concept with Improved Scale-Up Characteristics; Nyman et al., TMS Technical Paper, No. A87-13, 10/1987.
Chemical Engineer's Handbook; Perry, pp. 1216-1219, 1941.

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