Method for directly roasting and processing spent lithium ion batteries and recycling valuable metals
A lithium ion battery and valuable metal technology, which is applied to the treatment of waste lithium ion batteries and the recovery of valuable metals, the treatment of cobalt-containing waste lithium ion batteries and the recovery of valuable metals, can solve the problem of low quality and increased processing costs , dealing with many problems such as equipment
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Embodiment 1
[0015] Disposal of waste lithium-ion batteries for mobile phones. A certain brand of mobile phone waste lithium-ion battery weighs 18.6g each, and its main metal components are Li 2.74%, Co 22.31%, Cu 7.47%, Ni 0.40%, Mn 0.08%, Al 9.78%. Take 20 pieces of the waste lithium-ion batteries, put them into 500ml of 5% sodium chloride aqueous solution and soak them for 6 hours, take them out and place them on a porcelain plate, and dry them in an electric blast drying oven at 70°C for 4 hours. After peeling off the aluminum shell of the waste lithium-ion battery, put it into an alumina crucible, put it in an electric furnace and heat it to 200°C, keep it warm for 1.5h, then raise the temperature to 700°C, let in an appropriate amount of air, keep it warm for 6 hours, during the heating process Spilled gas is absorbed with a water slurry containing 1% limestone. Take it out after cooling, and manually crush it with a mortar until the area is less than 5mm 2 Put the crushed material...
Embodiment 2
[0017]Treatment of spent lithium-ion battery concentrates. A waste lithium-ion battery was mechanically pulverized, sorted and separated to produce materials containing cobalt, copper and lithium. The main metal components were Li 4.15%, Co 3.26%, Cu 3.65%, and Al 6.33%. Take 230g of the waste battery enrichment scrap, put it into an alumina crucible, place it in an electric furnace and heat it to 700°C, introduce an appropriate amount of air, and keep it warm for 6 hours. material absorption. Take it out after cooling, and manually crush it with a mortar until the area is less than 5mm 2 Put the crushed material into an alumina crucible, add 160g of sodium sulfate (or 180g of potassium sulfate), adjust the slurry with 120ml of concentrated sulfuric acid with a concentration of 98%, heat to 450°C in an electric furnace, and heat-preserve for 5h. Transfer the heat-treated material into a 3L beaker, add 2L of water, heat to 80°C, and stir for leaching for 40 minutes. Filter t...
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