Steady-state local linearization of the countercurrent multistage extraction process for metal ions

Journal Article · Wed Oct 01 04:00:00 EDT 1997 · Industrial and Engineering Chemistry Research

DOI:https://doi.org/10.1021/ie970115k· OSTI ID:562137

Tanaka, Mikiya; Koyama, Kazuya ^[1]; Shibata, Junji ^[2]

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1. National Inst. for Resources and Environment, Tsukuba, Ibaraki (Japan). Materials Processing Dept.
2. Kansai Univ., Suita, Osaka (Japan). Dept. of Chemical Engineering

Metal solvent extraction is receiving increasing attention in hydrometallurgy. The countercurrent multistage process is often accepted in plant operation of metal solvent extraction to enhance the extraction or separation efficiency. Steady-state local linearization of the countercurrent multistage solvent extraction process for metal ions with cation exchange reagents has been carried out on the basis of the differential forms of (i) the equilibrium relation and (ii) the material balance for the metal ion, in each stage. The result is presented as a normal form total differential equations for the respective stages expressing the relation of the metal ion molarities in the aqueous phase to the operational parameters capable of independent continuous variation. These equations have been validated by comparing their numerical solutions for a model system with those by the conventional simulation method. These equations, thus, provide a new simulation method enabling one to efficiently draw a precise diagram expressing the effect of one operational parameter on the process performance.

• OSTI ID: 562137
• Journal Information: Industrial and Engineering Chemistry Research, Journal Name: Industrial and Engineering Chemistry Research Journal Issue: 10 Vol. 36; ISSN IECRED; ISSN 0888-5885
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
COUNTER CURRENT
EFFICIENCY
EQUILIBRIUM
HYDROMETALLURGY
ION EXCHANGE
MATERIAL BALANCE
METALS
PHASE STUDIES
PROCESS CONTROL
SOLVENT EXTRACTION