EPA-110-XA07

110

2,850 千元

補助及獎勵回收清除處理暨再生利用

2021/01/01

2021/11/30

林欣蓉

回收基管會

徐伊亭

財團法人工業技術研究院

科技計畫

廢鋰二次電池、正極前驅物、開發與驗證

Waste lithium secondary batteries, Positive precursor, Development and verification

林欣蓉

03-5915215#

hsinjung@itri.org.tw

鋰電池中含有許多有價資源，包含鈷、鎳、錳、銅，甚至碳粉都是可以再生與再利用的資源，目前鋰電池回收以境外輸出處理為主，輸出類型仍以3C用品使用之鋰二次電池為大宗，國內廢電池資源之有價金屬較少進入本地產業鏈。因此，本計畫針對廢鋰二電池提取高純正極前驅物原料技術開發與驗證，將正負極混合粉體(俗稱黑粉)以低耗能與高效率的模式分離純化提取正極前驅物原料使再生料可使其含鈷量可大於71.06wt%，整體雜質小於1,500ppm，並符合工業之原料規格，最後進行再生料產品的試量產試製及驗證，可得到具有高附加價值之四氧化三鈷，期能將回收之再生料導入現有之鋰電池供應鏈當中，除了鈷之外，其他金屬亦可透過製程萃取出並再使用，更符合整體經濟效益及全循環之概念。 計畫中建廠成本以年處理量為1,000噸廢二次鋰電池之規模進行運作成本之估算，建置之固定成本為1億2,250萬元(前五年設備攤提為2,450萬元/年)，經常支出為5,432.5萬元，前5年ROI為-5.3%，第六年才由負值轉為正值為10.9%。因此，為了加快回收建置成本，也必須再生料作高值化，提高產品附加價值，改善現有處理製程，拓展去化途徑。 除了拜訪鋰電池回收處理業者，也積極拜訪化工與電動機車相關廠商，包含康普科技、美琪瑪、光澤科技與達和環保等公司討論電池再生料的使用、允收之規格、去化途徑以及與上下游串聯之可能性，並期望有新興的處理業者加入，帶動及升級目前的處理現況，往高值化產品開發，並將有價金屬資源留在國內循環使用。

廢鋰二次電池、正極前驅物、開發與驗證

EPA-110-XA07(1213公開版)v1.pdf

5MB

2022/2/1 上午 12:00:00

Lithium batteries contain many valuable resources, including cobalt, nickel, manganese, copper, and even carbon powder, which can be regenerated and reused. According to last year's lithium battery recycling methods, they are all exported overseas, and the output type is mainly 3C batteries. Therefore, valuable metals in domestic waste battery resources are basically lost overseas, and valuable metals such as cobalt and nickel in waste batteries have not entered the local industrial chain. Therefore, this project is aimed at the development and verification of the technology for the extraction of high-purity cathode precursor raw materials from waste lithium secondary batteries. The cobalt content of the recycled materials can be greater than 71.06wt%, and the overall impurities are less than 1500ppm, and meet the industrial raw material specifications. Finally, the trial production and verification of the recycled material products can be carried out, and the high value-added cobalt tetroxide can be obtained. Introducing recycled materials into the existing lithium battery supply chain. In addition to cobalt, other metals can also be extracted and reused through the process, which is more in line with the overall economic efficiency and the concept of full recycling. In this study, the cost of building the plant is estimated based on the scale of the annual processing capacity of 1,000 tons of waste secondary lithium batteries. The fixed cost of the construction is 122.5 million yuan (the equipment amortized for the first five years is 24.5 million yuan/year) , The current expenditure was 54.325 million yuan, the ROI was -5.3% in the first 5 years, and the negative value was changed to positive 10.9% in the sixth year. Therefore, in order to speed up the recovery of construction costs, it is necessary to increase the value of recycled materials. Increase the added value of products, improve the existing processing process, and expand the way to go. In addition to visiting lithium battery recycling and processing companies, we are also actively visiting chemical and electric motor vehicle manufacturers, including CoreMax CO., LTD., Mechema CO., LTD., Kwang Ze Technology CO., LTD., and Onyx Ta-Ho CO., LTD. to discuss the use of battery renewable materials, acceptable specifications, and ways to dissipate them. And the possibility of connecting with upstream and downstream, and expecting emerging processing companies to join, drive and upgrade the current processing situation, develop high-value products, and keep valuable metal resources in the country for recycling.

Waste lithium secondary batteries, Positive precursor, Development and verification