Centrifugal extractor is a new, fast and efficient liquid-liquid extraction and separation equipment. It has higher separation efficiency than traditional extraction equipment such as mixer settler and extraction towers, and is more conducive to continuous production.

The centrifugal extractor uses a motor to drive the drum to rotate at high speed. The two liquids to be mixed and separated complete the mixing and mass transfer under the action of the shear force generated by the stirring paddle, and then are quickly separated under the action of the centrifugal force generated by the high-speed rotation of the drum.

Working Process Of Liquid Liquid separation centrifuge 

The centrifugal extraction machine can be used as a single unit or can be connected in multiple stages to achieve counter-current extraction. It has high mass transfer efficiency, short two-phase residence time, low retention volume, and is easy to operate. The rotation speed, flow ratio and mixing intensity can be changed as needed.

1. Mixed mass transfer process
The light and heavy phase solutions enter the mixing chamber from the light phase inlet and heavy phase inlet in a certain proportion, and the mixing and mass transfer process is quickly completed under the action of the stirring paddle.
2. Two-phase separation process
The mixed liquid enters the drum under the action of the static turbine. In the cavity area formed by the web, the mixed liquid quickly rotates synchronously with the drum. Under the action of centrifugal force, the heavy phase liquid with high density gradually moves away during the upward flow process. The center of the drum moves toward the drum wall; the light phase liquid with low density gradually moves away from the drum wall and toward the center. The clarified two-phase liquid finally enters the collection chamber through each channel and flows out along the tangent square, completing the two-phase separation. process.

Features Of counter-current centrifugal contactor

✅ Higher extraction efficiency (up to 99%)
✅ Reduced solvent consumption
✅ Continuous and stable operation
✅ Compact system design
✅ Faster phase separation (seconds vs minutes)
✅ Easy to scale from lab to industrial production

Application Field Of counter-current centrifugal contactor

1.    Wastewater treatment (such as phenolic wastewater treatment, waste acid water treatment);
2.    Pharmaceutical industry (such as preparation of pharmaceutical intermediates, Chinese medicine purification);
3.    Hydrometallurgy industry (such as copper, vanadium, nickel, rare earth elements and so many elements’ extraction and separation);
4.    Food industry (such as edible oil, food pigment, additive, lactic acid, citric acid and other extraction or separation);
5.    Fine chemicals (such as spice extraction, raw material of cosmetics extraction, vanillin extraction);
6.    Oil-water separation (such as remove water from crude oil/heavy oil/diesel and so on);

Technical Parameters Of  lab centrifugal contractor

Model	LCT-50	Remarks
Drum diameter(mm)	50
Applicable rotary speed(r/min)	2072～2800
Mixing flux (L/h)	≤50
Motor power (kw)	0.25
Applicable voltage	220V/50HZ
Unit weight (kg)	About 35	The specific weight is subject to the actual measurement
Applicable range of specific gravity difference between two phase( g/ml)	0.03～3
Applicable viscosity of feed solution (cp)	≤3000
Range of two-phase flow ratio	1/30～30/1
Pipe diameter of inlet and outlet (mm)	DN20
Inter-stage pipe diameter (mm)	DN20
Pipe diameter of discharging port (mm)	4points internal thread
Connection form of Inlet and outlet	Quick connect elbow/pagoda joint
Single dimension（mm）	400×370×900

Remarks：
1. Equipment materials need to be selected based on the physical and chemical properties of the materials being processed. Commonly used materials include polymer composite fluorine materials, SS304, SS316L, ordinary composite materials, fluorine materials, etc.
2. The mixing flux in the technical parameter table of each model mentioned above is the maximum theoretical flux of the equipment. The actual processing capacity of the equipment depends on the system of the material liquid (such as density, viscosity, emulsification degree, etc.), mass transfer efficiency, and separation effect. etc. are closely related.

FAQS
Q1:What is counter-current extraction process?
Counter-current extraction is a highly efficient liquid-liquid separation process in which two immiscible phases flow in opposite directions to maximize mass transfer and extraction efficiency.
This method is widely used in industries such as hydrometallurgy, pharmaceuticals, and fine chemicals, especially when high purity and continuous operation are required.

Q2:How Counter-Current Extraction Works?

• In a multi-stage centrifugal extraction system:
• The aqueous phase (feed solution) enters from one end
• The organic solvent phase enters from the opposite end
• Each stage performs:
• Intensive mixing
• Rapid phase separation (via centrifugal force)

Q3:Is it suitable for continuous operation?
Yes. Liquid-liquid centrifugal extractors are designed for continuous, stable operation, which makes them ideal for industrial-scale processes.

Q4:How easy is it to operate and maintain?
The system is user-friendly with automated controls. Maintenance is simple due to modular design, and key components can be easily accessed and replaced.

Q5:Can you customize the equipment?
Yes. We offer customized solutions based on:
Material compatibility
Explosion-proof requirements
Automation level
Skid-mounted systems

Q6:Do you provide technical support and installation?
Yes. We provide:
Process design support
Installation guidance  
Commissioning services
After-sales technical support

Q7:What is the price of a centrifugal extractor?
The price of a centrifugal extractor typically ranges from $3,000 to over $150,000, depending on the model, capacity, and customization requirements.

Q8:How to get an accurate price?
To provide a precise quotation, suppliers usually need:
Flow rate (L/h or m³/h)
Liquid properties (density, viscosity)
Extraction system (solvent + aqueous phase)
Number of stages
Material requirements

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KAIMINA TECHNOLOGY Integrated of manufacturing R&D and sales of equipments on synthesis reaction, mixing and separation, evaporation and fermentation etc. Our products are mainly used in chemical industry, pharmaceutical, hydrometallurgy, food, new materials, new energy, environmental protection and other fields.

The company adheres to the principle of "customer first, service first, product first", with professional processing equipment, scientific and reasonable production technology, excellence in manufacturing requirements, strict quality control system and perfect after-sales service, and the purpose of win-win cooperation. Provide professional and high-quality products and services to every customer.

Our company currently has two specialized production and processing bases, and has carried out in-depth cooperation with Tsinghua University, Zhejiang University, Central South University, Sichuan University, Chongqing University, Tianjin University, Chinese Academy of Sciences and many other universities, continuously improving our capabilities of R&D and equipment application .