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Extraction tank ( Mixer settler) Different oxidation state of cobalt nickel extraction separation

by:Deyuan      2020-08-31
Extraction tank ( Mixer settler) Different oxidation state of cobalt nickel extraction separation process, as a result of the ammonia complexing ability stronger than the water, and Co ( NH3) 62 + easy for the oxygen in air oxidation stability of Co ( NH3) 63 +, activated carbon can be catalyzed the reaction, and Ni ( NH3) 62 + is not easy to oxidation. With 20% ( V/V) P204 and 30% ( V/V) Fatty acid mixture from kerosene solution ( NH4) 2 so4 can priority extraction Co in the aqueous solution, and achieve quite high cobalt nickel separation factor, but with the extraction rate of the cobalt ( NH4) 2 so4 concentration increases and falling sharply, and the ammonia in the organic phase increases.
extraction tank ( Mixer settler) Different oxidation state in the process of the extraction separation of cobalt and nickel, stung because hydroxyl oxime and ketones and extraction agent Co in ammonia liquid extraction ability is very weak, and very effective for extraction of Ni, according to the reaction characteristic has developed many meaningful process, if use LIX extractant - from ammonia In the ammonium carbonate solution extraction nickel, and more than leave Co in extraction liquid, hydroxyl oxime degradation phenomenon in the process, however, can be in the aqueous solution containing ammonia and hydroxylamine sulfate reaction and regeneration for hydroxyl oxime again.
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