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Help CenterThin Film & Scraped-surface Evaporator for Lithium Extraction Wastewater
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High-Efficiency Concentration, Crystallization & Impurity Removal for Lithium and Aluminum Electrolyte Processing
Product Overview
The Thin Film Evaporator is a high-performance, anti-fouling evaporation unit designed for heat-sensitive, high-viscosity, high-salt, and scaling liquids. It is widely integrated into lithium extraction from aluminum electrolyte, mother liquor concentration, impurity separation, and zero-liquid-discharge systems. Combined with MVR technology, it delivers continuous concentration and crystallization with minimal steam consumption.
Working Principle
Feed liquid enters the evaporator and is uniformly distributed by rotating wiper blades into a thin film (0.1–1 mm) on the heated wall. Under vacuum, the liquid film evaporates rapidly. Vapor is discharged to a condenser or MVR compressor, while the concentrated liquid or crystal slurry is discharged continuously. The short residence time (5–60 seconds) protects heat-sensitive materials such as lithium carbonate and prevents thermal degradation.
Key Features
High heat transfer coefficient: up to 3,000–5,000 W/m²·K
Self-cleaning wiper blades resist scaling, fouling, and crystallization
Short residence time, ideal for heat-sensitive and high-value products
Handles viscosities up to 100,000 cP
High concentration ratio; dry solids can reach 95%
Corrosion-resistant materials: SS316L, TA10 titanium alloy, Hastelloy C-276, PTFE lining
Skid-mounted, modular design with PLC/DCS automatic control
Low energy consumption; can be coupled with MVR for 60–80% steam savings
Applications
Lithium extraction from aluminum electrolyte: concentration of Li₂CO₃ leachate, impurity removal, mother liquor drying, and salt separation
Chemical industry: distillation, purification, and concentration of resins, polymers, fine chemicals, and solvents
Wastewater treatment: high-salt, high-fluoride, and high-COD wastewater; zero liquid discharge
Food & pharmaceutical: concentration of heat-sensitive extracts, solvent recovery
Petrochemical: heavy oil, lubricating oil, and wax processing
Competitive Advantages
Anti-Fouling & Anti-Scaling: The mechanical wiper continuously renews the liquid film, preventing salt and fluoride deposition—critical for aluminum electrolyte leachate.
Higher Lithium Recovery: Short residence time and gentle evaporation reduce lithium entrainment and loss, improving overall recovery to over 85%.
Corrosion Resistance: TA10 titanium and Hastelloy C-276 withstand high-fluoride, high-chloride, and acidic conditions, extending equipment life.
Energy Saving: When integrated with MVR, secondary vapor is reused, reducing steam consumption and operating costs by 60–80% compared with traditional multi-effect evaporation.
Compact & Flexible: Skid-mounted design saves space and allows quick installation, capacity expansion, and process integration.
Service Scope
We provide full-cycle support: feed analysis, lab and pilot testing, process package design, equipment manufacturing, on-site installation and commissioning, operator training, performance testing, and remote O&M support.
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