Liquid Extraction/mixer Settler

LIQUID EXTRACTION/MIXER SETTLER is one of the many techniques available to the chemical, pharmaceutical and allied industries to allow separation of products from one another.
Liquid-liquid extraction is a technique closely-related to distillation a and is often combined with it in commercial processes a but liquid-liquid extraction does not use volatility differences to drive the separation. Instead, it uses the difference in solubility of one of the components in the feed mixture between the feed solvent and a second, immiscible solvent.
Separating products with small relative volatility differences.
Separating products which would require high energy input in distillation.
Separating products which form azeotropes.
Separations in aqueous mixtures Containing inorganic salts.
Separation of heat sensitive materials.
Separation of non-volatile or high-boiling compounds
Hydrometallurgy
Other difficult separations
Mixer-Settlers are one of the simplest forms of liquid-liquid extraction equipment a most closely resembling the laboratory experiments and approaching a theoreti-cal equilibrium stage. They are frequently used where the number of stages required for an extraction is small.

1. Mixing system
The QVF mixer consists of a special glass mixing zone, a PTFE turbine agitator and a variable speed drive. Settling System
The settler comprises a horizontal cylindrical pipe which, depending upon size may be one or more pipe sections.