With the rapid development of new energy vehicles, aerospace, and electronic information industries, the demand for magnesium alloy materials continues to rise. However, secondary resources such as slag, wastewater generated during magnesium smelting, and salt lake brine still contain a large amount of unrecovered magnesium. How to recover magnesium ions efficiently, economically, and in an environmentally friendly way has become a major focus of the industry.
To address the challenges of low extraction efficiency, difficult phase separation, and high equipment investment associated with traditional magnesium recovery processes, Zhengzhou Tiei Extraction Technology Co., Ltd., leveraging years of experience in liquid-liquid extraction and separation, has developed the CWL-M series centrifugal extractor, providing a new and highly efficient solution for magnesium recovery through solvent extraction.
Solvent Extraction Technology
With advantages such as high separation efficiency, low energy consumption, and continuous operation, solvent extraction technology has been widely applied in magnesium recovery from salt lake brine, impurity removal from waste liquids, and preparation of high-purity magnesium salts. This technology selectively binds magnesium ions in the aqueous phase with an organic extractant, enabling efficient concentration and purification of magnesium.
However, traditional extraction equipment such as mixer-settlers and extraction columns often suffer from long phase contact time, severe emulsification and entrainment, and large installation footprint, limiting the full potential of solvent extraction technology.
CWL-M Centrifugal Extractor Enhances Solvent Extraction Technology
Based on the characteristics of magnesium recovery systems, the CWL-M series centrifugal extractor independently developed by Zhengzhou Tiei Extraction transforms the traditional mass transfer process from “hours” to “seconds,” delivering four core advantages:
1.Short Residence Time Prevents Secondary Reactions of Magnesium Ions
The CWL-M centrifugal extractor utilizes centrifugal force generated by high-speed rotation to achieve rapid mixing and phase separation. The contact time between the two phases is reduced to only a few seconds to tens of seconds. For magnesium systems, this ultra-short residence time effectively prevents hydrolysis, precipitation, or side reactions between magnesium ions and impurities, significantly improving magnesium recovery yield and product purity.
2.High Extraction Efficiency, Target Achieved in a Single Stage
The CWL-M centrifugal extractor adopts an annular-gap shear mixing structure, with mass transfer efficiency exceeding 95%. In most magnesium recovery processes, a single-stage CWL-M centrifugal extractor can achieve the same extraction performance as multiple traditional mixer-settler stages, simplifying the process flow while reducing operation and maintenance costs.
3.Investment Savings, Smaller Footprint, Lower Energy Consumption
Footprint reduced to only 1/5 to 1/3 of traditional equipment: The fully enclosed integrated design allows flexible on-site installation and easy multi-stage series connection.
Significantly lower energy consumption: Under the same processing capacity, power consumption is much lower than traditional stirred extraction columns.
Minimal organic phase entrainment: After centrifugal separation, both phases achieve high clarity, greatly reducing extractant loss and saving long-term operating costs.
4.Fully Enclosed Operation for Safety and Environmental Protection
The CWL-M centrifugal extractor operates in a fully enclosed system without leakage. It is especially suitable for flammable, explosive, or volatile organic extraction systems such as sulfonated kerosene and phosphate ester extractants, ensuring safe and environmentally compliant magnesium recovery operations.
Typical Application Scenarios
1.Magnesium Recovery from Salt Lake Brine: Efficient magnesium-lithium separation and magnesium ion concentration for high-purity magnesium salt production.
2.Magnesium Alloy Scrap Recycling: Extracting magnesium from acid leach solutions while simultaneously removing impurities such as iron, copper, and nickel.
3.Magnesium Removal and Recovery from Industrial Wastewater: Recovering magnesium from magnesium-containing wastewater while reducing the load of subsequent treatment processes.
4.Metallurgical Tail Liquor Treatment: Selective magnesium recovery from hydrometallurgical systems involving zinc, nickel, cobalt, and other metals.
Efficient and environmentally friendly magnesium recovery is not only a valuable supplement to limited mineral resources but also an important practice in the circular economy. Zhengzhou Tiei Extraction Technology will continue to focus on the CWL-M centrifugal extractor, providing integrated solvent extraction solutions for magnesium ion separation and recovery to customers worldwide, helping enterprises reduce costs, improve efficiency, and achieve energy conservation and emission reduction.
Email: sales@tieiextraction.com
Whatsapp: +86 19069612820
