The rapid expansion of EVs, energy storage, and high-performance electronics has pushed global demand for rare earth elements (REEs) and battery metals to unprecedented levels. Traditional pyrometallurgical processes generate high emissions, significant waste, and unstable recovery rates, causing supply risks for key industries.
Hydrometallurgy provides a cleaner, more selective, and more efficient pathway, but only when supported by advanced engineering and optimized equipment. Hangzhou Tianyicheng New Energy Technology Co., Ltd. (TYIC) delivers high-efficiency extraction and purification systems that help global clients ensure stable, compliant, and scalable hydrometallurgical operations.
【Keep reading to uncover why hydrometallurgy is now essential for modern metal processing.】
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Table des matières
L'hydrométallurgie dans le traitement des terres rares
Hydrometallurgy plays a decisive role in processing rare earth elements, especially as industries require cleaner extraction technologies and higher-purity metallic outputs. Unlike pyrometallurgy, hydrometallurgy uses aqueous chemistry to enable selective dissolution, separation, and purification from ores, secondary materials, and industrial residues, significantly reducing environmental impact.
Key operations include:
• Lixiviation
• Impurity precipitation
• Extraction par solvant
• Ion exchange
• Crystallization
These steps allow practitioners to precisely separate REEs with extremely similar chemical properties, such as Nd/Pr or Dy/Tb—critical for producing magnet-grade and battery-grade oxides.
TYIC supports REE hydrometallurgy with:
• Extracteurs tubulaires de mélange
• Micro-interface separation systems
• Customized solvent-extraction modules
• PPH/HDPE corrosion-resistant tanks
• Turnkey EPC services
TYIC’s equipment is engineered for highly corrosive environments, including hydrochloric acid, sulfuric acid, and chloride leachates, ensuring stable long-term operation. The company’s systems are widely applied in REE recycling projects involving spent magnets, battery scrap, and industrial residues, supporting clients such as ECOPRO, GEM, and Ganfeng Lithium.
Hydrometallurgy remains the most sustainable and scalable route for REE production as global environmental standards tighten.
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Why Is Solvent Extraction Useful in Hydrometallurgy?
Solvent extraction (SX) is one of the most critical separation technologies in hydrometallurgy. Its unmatched selectivity, scalability, and tunability make it indispensable for REE, nickel, cobalt, lithium, and other strategic metals.
After leaching, SX enables:
✓ Selective ion transfer
✓ Deep impurity removal
✓ High-purity oxide/salt production
✓ Continuous and stable operation
For industries such as EV batteries, where purity directly affects performance, SX is essential for meeting material specifications.
However, SX efficiency is highly dependent on equipment performance. Poor mixing or unstable phase disengagement reduces extraction yields. TYIC provides engineering-grade solutions including:
• High-shear tubular mixers
• Micro-interface phase-separation units
• Corrosion-resistant PPH / HDPE / FRP assemblies
• Automated phase and flow-control systems
These solutions ensure consistent droplet formation, rapid phase separation, and minimized organic loss, significantly enhancing stage efficiency and reducing operational costs.
Solvent extraction is indispensable in modern hydrometallurgical flowsheets, and TYIC’s equipment ensures reliability from REE separation to nickel-cobalt and lithium recovery.
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Review on Hydrometallurgical Recovery of Rare Earth Metals
Hydrometallurgical recovery of REEs is becoming increasingly essential as industries pursue sustainable and economically viable supply strategies. With growing demand from EVs, wind turbines, robotics, and electronics, traditional mining alone cannot meet global needs.
Common hydrometallurgical routes include:
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Lixiviation
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Élimination des impuretés
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Extraction par solvant
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Précipitations
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Final oxide/salt production
Compared with pyrometallurgy, hydrometallurgy offers:
• Réduction de la consommation d'énergie
• Reduced emissions
• Superior chemical selectivity
• Compatibility with circular economy models
Emerging technologies—such as ionic liquids, membrane-assisted extraction, and new extractant formulations—continue improving efficiency and environmental performance. However, industrial implementation requires durable, corrosion-resistant, and precisely controlled engineering systems.
TYIC supports these applications through:
• Customized hydrometallurgical plant design
• Corrosion-resistant reaction and storage tanks
• High-performance extraction and mixing equipment
• Micro-interface oil-removal systems to stabilize organic phases
• Full EPC project execution
As global ESG policies strengthen, hydrometallurgical REE recovery will continue expanding, enabling industries to secure stable supply while reducing environmental impact.
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Conclusion
Hydrometallurgy provides the cleanest and most precise method for producing and recovering rare earths and critical metals.
TYIC supports global industries with advanced extraction equipment and turnkey hydrometallurgical solutions that deliver efficiency, compliance, and consistent high-purity output.
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