The spent potlining lithium extraction system is a core pre-treatment for the comprehensive utilization of spent potlining resources. It is specifically designed for the electrolyte crushing and grinding process. The process includes multiple stages: multi-stage crushing, segmented ball milling, precise particle size classification and separation, as well as full-process dust collection. It processes bulk electrolyte raw materials into particles that meet the particle size requirements for subsequent lithium extraction, laying a high-quality raw material foundation for the lithium extraction stage. The system balances production efficiency with environmental standards, is adaptable to special high-altitude working conditions, features a standardized equipment layout, and ensures smooth process integration and high operational efficiency across the entire process flow.

Process Advantages

1. Strong adaptability to high-altitude conditions and stable operation
Designed specifically for low air pressure and low temperatures at high altitudes. Core equipment such as motors, fans, and dust collectors are all high-altitude-specific models. The oil lubrication station is equipped with a heater, and low-voltage motors have IP65 high protection rating. The system can operate stably all year round, adapting to harsh high-altitude working conditions.

2. High grinding precision and good finished product particle size uniformity
Two-stage crushing pre-refines the raw material. A three-compartment ball mill performs staged grinding, paired with a variable-frequency precision classifier. The finished product fineness is stably controlled at 120 mesh with a passing rate ≥95%. The uniform particle size significantly improves subsequent lithium extraction efficiency.

3. Closed-loop process design with 100% raw material utilization
Unqualified coarse particles are returned to the mill in a closed loop, eliminating raw material waste. The full-process dust collection efficiency reaches ≥99.9%, and all collected dust is recovered into the finished product silo, achieving zero dust emission and complete raw material utilization.

4. Environmental compliance and green production
Particle emission concentration ≤10 mg/Nm³, well below national standards. The off-line pulse-jet baghouse dust collector ensures no secondary pollution. The circulating water system enables water resource reuse, meeting green environmental production standards.

5. Easy operation and maintenance with high cost-effectiveness
Equipped with precision metering and anti-bridging devices, the system features a high degree of automation. Wear parts of core equipment are made of wear-resistant materials, making disassembly and replacement easy with low failure rates. One-stop supply, installation & commissioning, and technical training reduce operating and maintenance costs.