High-Efficiency Mixer Settler System for Solvent Extraction

Advanced mixer settler extraction systems for continuous liquid-liquid separation.
Our mixer settler extractor units deliver high chemical separation efficiency for hydrometallurgy,
pharmaceuticals, and industrial processing.

Mixer Settler
Extraction System

A mixing settler unit system is a proven solvent extraction technology used for liquid-liquid separation processes across chemical, metallurgical, and pharmaceutical industries. The system consists of two distinct stages: a mixing chamber where two immiscible liquids are intensively contacted to transfer solutes, followed by a settling chamber where the liquids separate by gravity into two distinct phases.

Our mixer-settler extraction system enables continuous extraction, making it ideal for industrial-scale separation of valuable components from process streams. In the mixing stage, mechanical agitation creates intimate contact between the aqueous and organic phases, maximizing mass transfer efficiency. The subsequent settling stage allows the phases to separate cleanly based on density differences, with each phase exiting through dedicated outlets. This solvent extraction system design offers exceptional flexibility, allowing single-stage or multi-stage configurations to achieve the desired separation purity and recovery yield. Used extensively in hydrometallurgy for metal recovery, in chemical processing for purification, and in pharmaceutical manufacturing for intermediate isolation, our mixer settler equipment sets the standard for reliable liquid-liquid extraction.

industrial mixing settler unit system for gold refining and solvent extraction

Key Features of Industrial Mixer Settler Unit

Our mixer settler extractor systems are engineered for high mass transfer efficiency, operational flexibility,
and long-term reliability. Each feature contributes to superior extraction outcomes across demanding applications.

High Efficiency Liquid-Liquid Extraction

Optimized mixing chamber design ensures intimate contact between phases, maximizing solute transfer and achieving high recovery yields in a single stage.

Modular Multi-Stage System Design

Configurable with multiple extraction stages connected in series or counter-current arrangement, allowing precise control over separation purity and efficiency.

Corrosion-Resistant Material Construction

Fabricated from stainless steel, polypropylene, PVDF, or glass-lined materials to withstand aggressive chemicals, organic solvents, and varying pH conditions.

Controlled Mixing and Settling Process

Independent control of mixing intensity and settling time optimizes phase disengagement, minimizing entrainment and maximizing product purity.

Continuous Industrial Operation

Designed for 24/7 continuous processing with stable phase interfaces and consistent outlet streams, maximizing production throughput.

Corrosion-Resistant Material Construction

Simple mechanical design with accessible components reduces maintenance requirements, downtime, and operating costs.

Mixer Settler Plant Configurations

Single Stage Extraction Unit

  • Configuration: One mixing-settling pair for basic separation duty.
  • Suitable usage: Simple extraction applications where moderate purity is acceptable, or as the first stage in a larger process sequence.

Multi-Stage Extraction System

  • Configuration:Multiple mixer-settler units arranged in series or counter-current flow.
  • Suitable usage: High-purity applications requiring maximum solute recovery and minimal phase contamination.

Custom Scalable Industrial Plant

  • Configuration:Engineered system with a specified number of stages, flow rates, and automation level.
  • Suitable usage: Large-scale industrial plants requiring dedicated solvent extraction capacity with future expansion capability.

Applications of Mixer Settler Extraction Systems

Chemical Solvent Extraction

Purification of organic compounds, separation of reaction mixtures, and recovery of valuable chemicals from process streams.

Hydrometallurgy Metal Recovery

Extraction of copper, uranium, nickel, cobalt, rare earth elements, and precious metals from leach solutions.

Pharmaceutical Extraction Processes

Isolation of active pharmaceutical ingredients (APIs) and purification of intermediates in drug manufacturing.

Rare Metal Separation

Selective separation of strategically important metals, including lithium, tantalum, and tungsten, from complex solutions.

Petrochemical Processing

Removal of contaminants from hydrocarbon streams and recovery of valuable aromatic compounds.

Wastewater Treatment

Removal of dissolved organic compounds, phenols, and heavy metals from industrial effluent streams.

For reliable, efficient liquid-liquid separation, K-JHIL’s solvent extraction equipment delivers consistent
performance across chemical, metallurgical, and pharmaceutical applications.

How the Mixer Settler Extractor Works

01

Aqueous and organic phases enter the mixing chamber

The two immiscible liquid streams are fed into the mixing stage at controlled flow rates.

02

Intensive mixing and contact

Mechanical agitator creates turbulent conditions, breaking liquids into fine droplets and maximizing interfacial area for solute transfer.

03

Mass transfer of target component

Desired solute transfers from the feed phase to the extraction phase based on the partition coefficient and contact time.

04

Mixed-phase flow to settling chamber

The dispersion flows by gravity into the quiescent settling zone, where flow velocity is reduced.

05

Gravity separation and phase disengagement

Droplets coalesce; lighter phase rises, heavier phase settles, forming distinct layers at the liquid-liquid interface.

05

Separated phases discharge

Each phase overflows or underflows through dedicated outlets for collection or further processing.

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For a Mixing Settler Unit System

Why Choose Us

With deep expertise in solvent extraction technology, K-JHIL delivers custom-engineered mixer settler
systems backed by high-quality manufacturing. Our reliable industrial equipment is supported
by global installation assistance and comprehensive after-sales support.
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Mixer Settler System FAQs

What is a mixer settler system?

A mixer settler system is a solvent extraction unit used for liquid-liquid separation. It consists of a mixing chamber where two immiscible liquids are intensively contacted for solute transfer, followed by a settling chamber where phases separate by gravity for continuous industrial operation.
Mixer-settler extraction works by intimately mixing two immiscible liquids (typically aqueous and organic phases) during the mixing stage, allowing the target solute to transfer between phases. The mixture then flows to the settling stage, where the phases separate by gravity based on density differences, with each phase discharging separately.
Key industries include hydrometallurgy (metal recovery), chemical processing (purification), pharmaceutical manufacturing (API isolation), petrochemical processing, rare earth element extraction, and industrial wastewater treatment.
Multistage mixer-settler extraction involves connecting multiple units in series or in a counter-current configuration. Each stage progressively improves separation purity and recovery efficiency, enabling the production of high-purity products from complex feed solutions.
Materials are selected based on process chemistry and include stainless steel (316L), polypropylene, PVDF, PTFE-lined, and glass-lined steel for corrosion resistance. Our mixer settler extractor systems are engineered to withstand aggressive solvents, acids, and bases encountered in extraction processes.