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“以废治废”攻克锂电池回收难题
Ke Ji Ri Bao· 2025-08-06 09:04
Group 1 - The "Lithium Green Action" research team from Jiangxi University of Science and Technology has successfully developed a short-process green recycling technology for waste lithium batteries, addressing the challenge of efficient lithium resource recycling [1] - The new technology has been applied in multiple enterprises in Jiangxi, processing a total of 17,000 tons of waste batteries and generating an additional output value of over 170 million yuan [1] - Traditional lithium battery recycling faces three main challenges: high reagent consumption in hydrometallurgical processes, lithium loss during pyrometallurgical smelting, and complex combined process flows [1] Group 2 - The team introduced the "waste-to-waste synergy" concept to tackle the high costs and low selectivity of lithium extraction in traditional hydrometallurgical processes [1] - They pioneered flue gas resource utilization technology, achieving a lithium extraction selectivity rate exceeding 97% and reducing lithium extraction costs by approximately 20% compared to traditional methods [1] - The team developed a "layered roasting technique" to efficiently destroy the stable structure of lithium cobalt oxide batteries, resulting in a 66.71% reduction in water leaching residue, thereby lowering the recovery difficulty and costs for valuable metals like cobalt and nickel [1] Group 3 - In processing lithium iron phosphate batteries and sulfur-containing waste, the team innovatively combined waste lead-acid battery recovery with waste lithium iron phosphate battery co-smelting, achieving lithium recovery rates of 96% and lead recovery rates of 98% [2] - The co-smelting process also effectively fixed sulfur generated during melting, achieving a sulfur fixation rate of 99% [2] - Collaborations with companies like Jiangxi Tianqi Jintai Ge Co., Ltd. have resulted in an additional output value of over 40 million yuan within two years [2] Group 4 - The team has applied for seven national invention patents in the battery recycling field, with two patents granted and one international patent applied for [2] - The commitment to "rejuvenate every retired battery" reflects the potential of this technology to inject new momentum into Jiangxi's lithium battery recycling industry [2]