As an important boron resource carrier, the development and utilization of salar brine faces technical bottlenecks such as low efficiency and high energy consumption of traditional extraction processes. The CWL-M centrifugal extractor developed and produced by Zhengzhou Tiei Extraction optimizes the process system. Experimental results show that the new centrifugal extraction technology has shown significant advantages in extracting boron from salar brine.

Methods for Extracting Boron from Salar Brine

Precipitation method
Advantages: simple process flow, small equipment investment, easy operation.
Disadvantages: can only remove 50% to 60% of the boron in the solution, suitable for brine with high boron content.

Adsorption method
Advantages: The process is relatively mature and the adsorption capacity is high.
Disadvantages: The process is complex, the production cost is high, the regeneration time is long, and the adsorption capacity will decrease after long-term use.

Ion exchange method
Advantages: The recovery rate of boron can reach more than 90%, which is suitable for the extraction of low-concentration boron.
Disadvantages: The boric acid content in the eluent is low, the evaporation volume is large when the eluent is processed, and a large amount of resin will be consumed during repeated elution and regeneration. It is suitable for laboratory research.

Extraction method
Advantages: short process flow, low production cost, no three wastes, suitable for brine of different concentrations.
Disadvantages: need to select appropriate extraction agent and process conditions.

Equipment for Extracting Boron from Salar Brine

According to the working principle and mechanical structure of the extraction equipment, it is mainly divided into three types: mixer settler, extraction column and centrifugal extractor.

Mixer Settler
Structure: It is mainly composed of a mixing chamber and a clarifying chamber. The liquid feed and the solvent are fully contacted and transferred in the mixing chamber through stirring, and then enter the clarifying chamber to complete mass transfer and phase separation under the action of gravity.
Advantages: strong adaptability, simple scale-up, and strong operability.
Disadvantages: large liquid feed retention, large floor space, and easy contamination of materials.

Extraction Column
Type: It is mainly divided into packed column and sieve plate column, which completes mass transfer separation and phase separation at different positions of the column.
Advantages: It is suitable for large-scale production.
Disadvantages: Low mass transfer efficiency, serious backmixing, and large scale limit its application.

Centrifugal Extractor
Features: A new generation of fast and efficient liquid-liquid extraction and separation equipment with a compact structure. It accelerates separation by using the centrifugal force generated by high-speed rotation to complete the separation of liquid-liquid two phases with a specific gravity difference.
Advantages: It can quickly establish phase equilibrium, easily realize single-stage or multi-stage series countercurrent or cross-current extraction, has high extraction efficiency, small machine volume, low consumption of extractant or detergent, and saves solvent investment costs.
Application: It has been proved through the practice of the CWL-M centrifugal extractor that under the best process conditions, after five-stage extraction and four-stage stripping, the extraction rate and stripping rate are both above 97%.

Through the above introduction, it can be seen that the centrifugal extractor has obvious advantages in extracting boron from salar brine. The use of centrifugal extractor is conducive to the mechanization and industrialization of extraction equipment and the realization of automatic control. The centrifugal extractor provides reliable technical support for industrialized brine extraction of boron.

Email: sales@tieiextraction.com
Whatsapp: +86 19069612820