SK Eco Plant internalized Key Recycling Technologies for Used Batteries
SK Eco Plant succeeded in internalized key
technologies, including high recovery rates for nickel, cobalt, and lithium,
waste reduction in effluents, and fire prevention in high-speed discharging,
across the entire process of recycling and post-processing used batteries.
SK Eco Plant achieves a 97% recovery rate
for rare metals nickel and cobalt using a solvent extraction method from used
batteries. The purity of the recovered nickel and cobalt reaches 99.9%, equivalent
to mineral levels used in battery manufacturing.
SK Eco Plant achieves a 90% recovery rate
for lithium, a key rare metal used in battery cathodes. The company optimizes
the recovery process using a solvent extraction method, deviating from the
conventional dry process, and integrates technology to produce lithium
hydroxide used in batteries.
SK Eco Plant has advanced its technology
for the discharge of used batteries. Typically, it takes about a day to fully
discharge spent batteries, but through collaboration with KAIST, SK Eco Plant
has reduced the time required for complete discharge to a maximum of 49
minutes.
SK Eco Plant has applied for patents for the four core technologies, and the
ultimate goal is to implement them in the recycling facility for used batteries
at the SK Eco Plant complex in Gyeongju, Gyeongsangbuk Province, which is
scheduled to be completed in 2025.
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