Method for recovering metal from waste lithium battery
A waste lithium battery and metal technology, applied in the direction of improving process efficiency, can solve problems such as environmental pollution, and achieve the effect of simple equipment process and high extraction rate
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[0040] Example 1
[0041] 1) Take 95% of the heat-treated sieve and 5% flux by weight percentage, and smelt in the graphite crucible of the vacuum melting furnace. The vacuum degree of the vacuum melting furnace is less than 0.5Pa. Fill the vacuum melting furnace with nitrogen and control the aeration The pressure is -0.09MPa~-0.03Mpa; 3) The vacuum smelting furnace is heated to 1800-2800°C until the materials are all melted; 4) The completely melted materials are poured into the casting ladle; 5) To be cooled until the material temperature is less than 200 After ℃, take out the casting ladle and remove the slag on it to obtain the cobalt-based alloy.
Example Embodiment
[0042] Example 2
[0043] Take 90% of the heat-treated undersieve, 8% flux, and 2% coke by weight percentage, and melt it in the tungsten crucible of the vacuum melting furnace. The vacuum degree of the vacuum melting furnace is less than 0.5Pa, and the vacuum melting furnace is filled with carbon dioxide. Control the inflation pressure to -0.09MPa~-0.03Mpa; 3) Heat the vacuum melting furnace to 1800-2800°C until the materials are completely melted; 4) Pour the completely melted materials into the casting ladle; 5) Wait to be cooled to the material temperature After the temperature is lower than 200°C, take out the casting ladle and remove the slag on it to obtain the cobalt-based alloy.
Example Embodiment
[0044] Example 3
[0045] Take 82% of the heat-treated undersieve, 12% flux, and 6% coke by weight percentage, and smelt it in the graphite crucible of a vacuum melting furnace. The vacuum degree of the vacuum melting furnace is less than 0.5Pa, and the vacuum melting furnace is filled with nitrogen. Control the inflation pressure to -0.09MPa~-0.03Mpa; 3) Heat the vacuum melting furnace to 1800-2800°C until the materials are completely melted; 4) Pour the completely melted materials into the casting ladle; 5) Wait to be cooled to the material temperature After the temperature is lower than 200°C, take out the casting ladle and remove the slag on it to obtain the cobalt-based alloy.
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