The discarded lithium battery contains a large amount of non-renewable and economically valuable metal resources, such as cobalt, lithium, nickel, copper, aluminum, etc., if it can effectively recycle discarded or unqualified lithium batteries, it can not only reduce the waste battery to the environment. The pressure can also avoid the waste of metal resources such as cobalt and nickel.
The recovery of valuable metals from waste lithium-ion batteries is based on hydrometallurgical techniques for the separation and recovery of non-ferrous metals, including leaching, solution purification and enrichment, solvent extraction, etc., and electro-metallurgical techniques, ie electrowinning, Obtain elemental metal products.
Technical route
First, pre-treat the waste lithium battery (including discharge, disassembly, crushing, sorting; dismantling of plastic and iron casing for recycling)
Next, the sorted electrode material is subjected to alkali leaching, acid leaching, and impurity removal, followed by extraction.
Extraction is a key step to separate copper from cobalt and nickel; copper enters the electrode pool for electrowinning to produce electrowinned copper products; the extracted cobalt and nickel solutions are extracted and separated, and then crystallized and concentrated to obtain cobalt salts directly. And the nickel salt; or the extracted and separated cobalt and nickel respectively enter the electric storage tank to obtain the electric product drill and the electrowinning nickel product.
The recovery rate of drilling, copper and nickel in the electrodeposition process can reach 99%, the grade can reach 99.98%, 99.95% and 99.2% to 99.9%, and the products of cobalt sulfate and nickel sulfate can also meet the national inspection standards.
The wet recovery process has a positive effect on the recovery of metal resources of waste lithium batteries. At the same time, the method is clean and environmentally friendly, low in cost and high in profit, and has a large competitive advantage in the similar methods.
The wet recycling process can also integrate and simplify the process, and the whole process has low energy consumption and high product recovery rate.
The recovery of valuable metals from waste lithium-ion batteries is based on hydrometallurgical techniques for the separation and recovery of non-ferrous metals, including leaching, solution purification and enrichment, solvent extraction, etc., and electro-metallurgical techniques, ie electrowinning, Obtain elemental metal products.
Technical route
First, pre-treat the waste lithium battery (including discharge, disassembly, crushing, sorting; dismantling of plastic and iron casing for recycling)
Next, the sorted electrode material is subjected to alkali leaching, acid leaching, and impurity removal, followed by extraction.
Extraction is a key step to separate copper from cobalt and nickel; copper enters the electrode pool for electrowinning to produce electrowinned copper products; the extracted cobalt and nickel solutions are extracted and separated, and then crystallized and concentrated to obtain cobalt salts directly. And the nickel salt; or the extracted and separated cobalt and nickel respectively enter the electric storage tank to obtain the electric product drill and the electrowinning nickel product.
The recovery rate of drilling, copper and nickel in the electrodeposition process can reach 99%, the grade can reach 99.98%, 99.95% and 99.2% to 99.9%, and the products of cobalt sulfate and nickel sulfate can also meet the national inspection standards.
The wet recovery process has a positive effect on the recovery of metal resources of waste lithium batteries. At the same time, the method is clean and environmentally friendly, low in cost and high in profit, and has a large competitive advantage in the similar methods.
The wet recycling process can also integrate and simplify the process, and the whole process has low energy consumption and high product recovery rate.
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