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In the rapid development of new energy industry, the global annual consumption of graphite for lithium anode materials exceeds 1.5 million tons, while the recovery rate of natural graphite resources is less than 30%. As a professional service provider in the field of mineral processing equipment, we realize the whole life cycle management of graphite resources through innovative technology, especially in the field of tailings recovery has made breakthrough progress. In this article, we will focus on analyzing the core breakthroughs in graphite recycling technology, revealing how tailings resource utilization can create new value.
In the traditional beneficiation process, about 20-35% of graphite is lost to the tailings due to the fine embedded particle size and complex lamellar structure. We adopt "three-stage gradient recovery system" to maximize the value of tailings:
1. Pre-enrichment enhanced process
Apply high-frequency vibrating screen (500-800Hz) for particle size classification.
Introducing X-ray photoelectric sorting machine (XRT) to realize accurate sorting of 0.2mm particles.
Developing special flotation capture agent (HLX-8), which improves the selectivity by 35%.
2. Core recovery process matrix
Microbubble flotation column (Φ3.6×12m) processing -0.074mm microfine particles.
Compound force field re-election equipment to recover 0.15-0.6mm medium-coarse particles.
High-voltage electrowinning machine (120kV) to process complex symbiotic minerals.
3. Intelligent control system
Online XRF element analyzer for real-time monitoring.
Adaptive PID control system regulates the dosage of chemicals.
The recovery rate is increased from 58% in the traditional process to 82%.
After the application of this system, the graphite grade of tailings of a lithium material enterprise increased from 12.6% to 68.3%, with an annual increase of more than 28 million yuan. The supporting EPCM+O service model can help customers complete the production line transformation within 6-8 months.
1. Process waste regeneration system
Adopting airflow sorting + microwave purification technology, the cutting waste is transformed into 99.9% high purity graphite, and the loss rate is controlled within 3%.
2. Dust closed-loop collection program
Pulse blowback bag filter (filtration efficiency 99.97%) + graphite-specific explosion-proof system, realizing dust reuse rate of more than 92%.
3. Chemical regeneration innovative process
Developing low temperature catalytic cracking technology (450-550℃), energy consumption is reduced by 40%, which is especially suitable for resin-based composite material recycling.
1. Iterative applications in the field of new energy
Lithium battery anode material: regenerated graphite gram capacity up to 340mAh/g;; and
Fuel cell bipolar plates: conductivity maintained at 1.2×10^4 S/m;
Energy storage system application: cycle life increased to 8000 times.
2. Innovative development of environmentally friendly materials
Heavy metal adsorbent: specific surface area up to 220m²/g; Conductive concrete additive: compressive strength up to 1.5m²/g.
Conductive concrete additives: compressive strength increased by 25%.
Industrial lubricant carrier: friction coefficient reduced to 0.08.
We provide a full chain of services from tailings analysis → process design → equipment supply → operation optimization:
Economic value: Reduce the cost of treatment by $18-25 per ton.
Environmental value: Reduce the need for new mining by 60%.
Management value: DCS system realizes intelligent production control.
Data from a customer's project shows that the payback period has been shortened to 2.3 years, the carbon emission reduction has reached 12,000 tons/year, and the project has been selected as a green manufacturing demonstration project by the Ministry of Industry and Information Technology .
Under the industrial background of tightening resource constraints, graphite recycling has changed from a cost item to a value creation point. Our continuous research and development of tailings activation technology, modular recycling unit (processing capacity 50-800t/d), and digital twin control system are helping customers around the world to build a new model of graphite recycling economy. Contact our technical team today for customized recycling solutions to open the door to renewable wealth.
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