A method for recovering positive electrode material of waste power lithium battery by assisted heat treatment of antibiotic slag
A technology of antibiotic slag and cathode material, applied in battery recycling, recycling technology, waste collector recycling, etc., can solve the problems of loss of value and high production cost, achieve rich pore structure, good electrochemical performance, and achieve harmless The effect of processing / high-value processing
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Embodiment 1
[0050] ①Auxiliary roasting: The solid waste generated in the antibiotic production process is antibiotic slag. 4.0g of antibiotic slag (containing 15.5% calcium oxalate) and 2.0g of waste nickel cobalt lithium manganate are ground evenly in a mechanical grinder and placed in a mechanical grinder. In a tube furnace with an inert atmosphere (referring to Ar gas), roasting at 650 ° C for 1 hour, after cooling, the auxiliary roasting slag (also called calcining) is obtained;
[0051] ②Low-acid acid leaching: First, add 40 mL of 1mol / L sulfuric acid solution into the beaker, and place it in a 60°C water bath for heating and stirring for 20 minutes, and add auxiliary roasting slag at a liquid-solid ratio (mL:g) of 20:1. After continuing to stir and react for 3h, filter and wash to obtain acid leaching solution and acid leaching residue;
[0052] ③Reuse of antibiotic bacterial residue: Wash the acid leaching residue with deionized water until the filtrate is neutral, and directly obt...
Embodiment 2
[0055] ①Auxiliary roasting: The solid waste generated in the antibiotic production process is antibiotic slag. In a tube furnace in an inert atmosphere, calcined at 750 °C for 2 hours, and after cooling, the auxiliary calcined slag was obtained;
[0056] ②Low-acid acid leaching: First, add 50 mL of 1.6 mol / L hydrochloric acid solution into the beaker, heat and stir it in a water bath at 80°C for 20 min, and add auxiliary roasting slag at a liquid-solid ratio of 30:1 (mL:g). , after continuing to stir and react for 2h, filter and wash to obtain acid leaching solution and acid leaching residue;
[0057] ③Reuse of antibiotic bacterial residue: Wash the acid leaching residue with deionized water until the filtrate is neutral, and directly obtain the carbon material derived from antibiotic bacterial residue after drying, without additional processing steps, and then conduct physical characterization and electrical performance test after grinding uniformly. In the voltage range of ...
Embodiment 3
[0060] ①Auxiliary roasting: The solid waste generated in the antibiotic production process is antibiotic slag. 4.0g of antibiotic slag (containing 18.1% calcium oxalate) and 1.0g of waste lithium nickelate are ground evenly in a mechanical grinder and placed in an inert In the tube furnace of the atmosphere, roasting at 650 ℃ for 1.5h, after cooling, the auxiliary roasting slag is obtained;
[0061] ②Low-acid acid leaching: First, add 50 mL of 1.2mol / L nitric acid solution into the beaker, heat and stir in a 60°C water bath for 20 minutes, and add auxiliary roasting slag at a liquid-solid ratio of 40:1 (mL:g). , after continuing to stir and react for 1h, filter and wash to obtain acid leaching solution and acid leaching residue;
[0062] ③Reuse of antibiotic bacterial residue: Wash the acid leaching residue with deionized water until the filtrate is neutral, and directly obtain the carbon material derived from antibiotic bacterial residue after drying, without additional proce...
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