1)Preparation of nickel carbonate: The feeding method of the reaction tank is changed from series to single tank in parallel and continuous reaction. The feeding method consists of feeding the raw material liquid and lye from the inlet of the No. 1 chute and adding the liquid to the lye and nickel liquid separately. In order to achieve real-time monitoring of pH and other process conditions and automated control.
2) The reaction conditions for the nickel electrolysis production process of nickel carbonate are optimized as follows: temperature 55°C, residence time 5h, pH=7.8±0.1, the various indicators and production capacity of nickel carbonate after transformation can meet the requirements of the existing nickel electrolysis process.