详情描述

Laboratory extraction tanks (extractor boxes, extractors, and mixing clarification units) are a stepwise contact extraction equipment consisting of a mixing system, mixing zone, clarification zone, and phase separation zone. In each stage, the two immiscible liquid phases undergo mixing, clarification, and phase separation processes, thereby achieving mass transfer and separation of the target solute between different liquid phases.

Work Process

The specific working process of the extraction tank (mixed clarification tank) involves the feed liquid and extractant being pumped into the mixing chamber through their respective feed ports by a feed pump. A high-speed stirrer then mixes the feed liquid and extractant for mass transfer. Subsequently, they flow through overflow baffles into the clarification chamber, where they are separated into light and heavy phases under gravity. The separated light and heavy phases enter different outlets, completing one extraction cycle. In actual production, the extraction tank is typically a multi-stage series configuration, including extraction, back-extraction, washing, and regeneration sections, among others, which should be configured according to the specific production process.

To meet customer needs, Pure Extraction offers extraction equipment consultation and services: from initial communication and planning of process objectives or operational conditions, to design, customization, and production, helping you build the ideal extraction equipment. We aim to provide maximum convenience and peace of mind. Welcome to inquire!

Hotline for Inquiry: 15380766707!

Mixed mass transfer process

Raw Material IntroductionThe feedstock liquid and extractant are separately introduced into the mixing chamber of the extraction tank through their respective feed ports. For instance, in hydrometallurgy, the aqueous solution containing metal ions serves as the feedstock liquid, while the organic extractant is introduced as another liquid phase into the mixing chamber.

Agitate and MixThe mixing chamber is equipped with a blender, which rotates at high speed, allowing the raw material liquid and extractant to fully contact and mix. Under the action of blending, the solute is transferred from the raw material liquid to the extractant, forming a two-phase solution. The intensity and duration of blending have a significant impact on the mass transfer efficiency; insufficient blending can result in inadequate contact between the two phases, reducing the efficiency of mass transfer; excessive blending, however, may lead to emulsification, increasing the difficulty of subsequent separation.

Separation process

Overflow enters clarification chamberThe mixed liquid enters the clarification chamber through overflow baffles. The clarification chamber is a spacious room with a large cavity volume, providing ample space for the liquid to settle and separate.

Gravity Natural SeparationIn the clarification chamber, due to the differing densities of the raw liquid and the extractant, under the influence of gravity, the two phases gradually separate. The denser phase (usually the heavy phase) sinks to the bottom, while the less dense phase (usually the light phase) floats on top, forming a clear phase interface.

Partial contact reduces mass transfer efficiency; excessive stirring can lead to emulsification, increasing the difficulty of subsequent separation.

Key Features

● High-grade efficiency

●Simple Structure: The extraction tank typically consists of a tank body, interface adjusting tube, motor reducer, stirrer shaft, impeller, speed controller, and a movable platform, etc., with a relatively simple structure.

●Stable Operation, Strong Adaptability: Due to the larger volume of the extraction tank and higher liquid storage capacity, it can accommodate fluctuations in the feed material within a certain range. After adjustment and balance, the operation is relatively stable and highly adaptable.

● Scalability Reliability: The design parameters such as single-stage extraction rate remain relatively reliable after scaling up.

Application Fields

● Copper Extraction

Rare Earth Extraction and Separation

Nickel Cobalt Extraction

Rare metal extraction

Nuclear Industry

Technical Specifications


Larger sizes available, custom-made according to customer's process requirements. Welcome to inquire:15380766707  ！


Complete extraction tank equipment and engineering projects application

Process Design: Design a rational extraction process according to customer requirements.

● Equipment Selection: Choose the appropriate extraction tank model and configuration for different materials.

Engineering Design: Includes equipment layout, pipeline design, instrument control, and PLC integration.

● Equipment Manufacturing: Offer customized non-standard production and processing of extraction tanks as per requirements.

● Installation and Commissioning: Perform equipment installation, adjustment, and linkage trial run on-site.

● Staff Training: Conduct systematic training for customer operators.

● After-sales Service We offer comprehensive after-sales support to ensure long-term stable operation of the equipment.

Complete set of trial extraction tank for containers