Lithium Battery/Lithium Extraction

In the production and recycling of lithium-ion battery cathode materials, mixed wastewater rich in sodium sulfate and lithium sulfate is generated. This wastewater has a complex composition and high salt content, and traditional treatment methods often only allow it to be disposed of as hazardous waste, which is not only costly but also results in a significant waste of sodium and lithium resources. Faced with the urgent need for sustainable development in the lithium battery industry and increasingly stringent environmental regulations, a well-known lithium battery material manufacturer commissioned Conqinphi to design and build an industrial-grade solution capable of simultaneously recovering high-purity sodium sulfate and lithium sulfate from wastewater.

In the process of lithium battery recycling and cathode material production, a complex and highly corrosive lithium-containing waste electrolyte is generated. This electrolyte contains highly valuable lithium, but also contains impurities such as aluminum and iron, as well as fluorides. Traditional treatment methods result in low recovery rates, high costs, and are prone to secondary pollution. Faced with this common industry challenge, a leading battery recycling customer of Conqinphi urgently needed a dedicated system capable of efficiently and stably removing impurities from aluminum electrolyte and enriching and recovering lithium resources.

With the rapid development of the lithium battery industry, electrolyte recycling has become a crucial issue. Traditional electrolyte processing methods suffer from low lithium resource recovery rates, compromised electrolyte performance, and high energy consumption. A large lithium battery manufacturer faces a technological bottleneck in electrolyte recycling and urgently needs an innovative solution that can efficiently extract lithium while maintaining electrolyte performance.

Objectives: 1.Lithium recovery rate ≥98%, by-product Na₂CO₃·10H₂O reaching industrial grade; 2.Comprehensive energy consumption per ton of water ≤28 kWh, zero live steam replenishment; 3.System continuous operation ≥8,000 h/a, shutdown for cleaning ≤4 times/year; 4.Delivery cycle ≤4 months, 3-year warranty, full life-cycle service.

Facing this challenge, our company successfully designed, built, and put into operation this lithium carbonate MVR evaporation crystallization system with a processing capacity of 120 tons/day. This system, based on mechanical vapor recompression (MVR) technology, deeply integrates the physicochemical properties of lithium carbonate, achieving a high degree of efficiency, cost-effectiveness, and product quality in large-scale production, providing strong technical support for the client's sustainable development.

This case provides the lithium battery recycling industry with...

This case study provides the lithium battery recycling industry with...

The 5t/h sodium chloride triple-effect + 7t/h sodium sulfate MVR evaporation and crystallization system, with "separation of salts, coupling of mother liquor, high-temperature MVR...