Low-gas-content electrolytic cobalt preparation method
A gas content, electrolytic cobalt technology, applied in the field of electrolytic refining, can solve the problems of unqualified electrolytic cobalt physical quality, increased gas content, reduced current efficiency, etc.
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Embodiment 1
[0015] Slowly add 10% by mass ammonia water to the cobalt chloride solution with a cobalt concentration of 80g / L. The pH meter measures the pH of the solution to 3.5, configures the cobalt ammonia solution, and uses the circulating pump to pass the solution into the diaphragm electrolyzer. The circulation speed of the solution entering the diaphragm area of a single cathode is 3L / h, with coarse cobalt as the anode, metal titanium plate as the cathode, pulse electrolysis power supply, control duty ratio 40:1, current density 40A / m 2 , The electrodeposition temperature is 50℃, and the cobalt is electrodeposited. After testing, the gas element oxygen in the electrodeposited cobalt plate is 8ppm, and the carbon is 2ppm.
Embodiment 2
[0017] Slowly add 15% by mass ammonia water to the cobalt chloride solution with a cobalt concentration of 80g / L. The pH meter measures the pH of the solution to 4.0, configures the cobalt ammonia solution, and uses the circulating pump to pass the solution into the diaphragm electrolyzer. The circulation speed of the solution entering the diaphragm area of a single cathode is 4L / h, with crude cobalt as the anode and metal titanium plate as the cathode, using pulse electrolysis power supply, controlling the duty ratio of 40:1, and the current density of 40A / m 2 , The electrodeposition temperature is 55℃, and the electrodeposition of cobalt is carried out. After testing, the gas element oxygen in the electrodeposited cobalt plate is 6ppm, and the carbon is 1.5ppm.
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