Recovery and treatment of failed negative alloy powder
The shell of the failed MH/Ni battery was stripped, and the negative electrode was separated from the battery core. The failed negative electrode powder was obtained by ultrasonic shock and other physical methods, and then the treated negative electrode powder was obtained by chemical treatment. The negative electrode powder was pressed into pieces and melted repeatedly for 3-4 times in a non-consumable vacuum arc furnace. To remove oxide layer on the surface of the smelting ingot casting, its broken, after mixing, use ICP method measuring the mixed rare earth, nickel, cobalt, manganese, aluminum percentage content of each element, depending on the loss of hydrogen storage alloy elements, based on the content of nickel element, add other necessary elements, for smelting, finally got the good performance of recycled alloy.
