Method for recycling valuable metal in lithium ion battery
A lithium-ion battery and ion battery technology, applied in battery recycling, recycling technology, waste collector recycling, etc., can solve the problems of reducing recycling costs, inability to make full use of battery raw material recycling operations, etc., and achieve fast acquisition and metal recovery rate High, high-purity effect
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[0050]Example 1
[0051]Manually disassemble the nickel-cobalt-manganese ternary lithium-ion battery and remove the outer iron shell. The inner core of the battery is crushed, the iron shell and the diaphragm are removed by magnetic separation, wind separation, and sieving to obtain positive and negative electrode powders with a particle size of ≤ 2mm. Take 5kg of the mixed powder and transfer it to the reaction furnace, mix with magnesium powder and potassium chlorate as igniting agent. The magnesium powder is ignited and the system starts to self-propagating reaction. After the reaction is stable, pass oxygen-depleted gas N from the bottom of the reactor2(Oxygen 5%), 400 mL / min; slowly pass oxygen-enriched gas (oxygen volume fraction 100%) from the top of the reactor into the reaction system, 500 mL / min, for 3 minutes. Remove a small amount of slag from the upper part of the melt, and cool the lower liquid to obtain a metal mixture. Using ICP (Inductively Coupled Plasma Spectrometer)...
Example Embodiment
[0052]Example 2
[0053]Manually disassemble the nickel-cobalt-aluminum ternary lithium-ion battery and remove the outer iron shell. The inner core of the battery is crushed, the iron shell and the diaphragm are removed by magnetic separation, wind separation, and sieving to obtain positive and negative electrode powders with a particle size of ≤ 2mm. Take 8kg of the mixture powder and transfer it to the reaction furnace, mix with magnesium powder and potassium chlorate as igniting agent. The magnesium powder is ignited and the system starts to self-propagating reaction. After the reaction is stable, oxygen-poor gas Ar (99.9%) is introduced from the bottom of the reactor at 300 mL / min; oxygen-enriched gas (oxygen volume fraction 95%) is slowly introduced into the reaction system from the top of the reactor at 400 mL / min, The time is 3min. Remove a small amount of slag from the upper part of the melt, and cool the lower liquid to obtain a metal mixture. Using ICP (inductively coupled pl...
Example Embodiment
[0054]Example 3
[0055]Manually disassemble the lithium cobalt oxide lithium-ion battery and remove the outer iron shell. The inner core of the battery is crushed, the iron shell and the diaphragm are removed by magnetic separation, wind separation, and sieving to obtain positive and negative electrode powders with a particle size of ≤ 2mm. Take 10kg of the mixture powder and transfer it to the reaction furnace, mix in ethanol and potassium chlorate as igniting agent. When ethanol is ignited, the system begins to self-propagating reaction. After the reaction is stable, pass the oxygen-depleted gas CO from the bottom of the reactor2(Oxygen content 10%), 500mL / min; slowly pass oxygen-rich gas (oxygen volume fraction 95%) from the top of the reactor into the reaction system, 600mL / min, for 3min. Remove a small amount of slag from the upper part of the melt, and cool the lower liquid to obtain a metal mixture. Using ICP (inductively coupled plasma spectrometer) to determine the content of...
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