Preparation method of high-density granulated nickel-cobalt-manganese hydroxide
A technology of hydroxide and nickel-cobalt-manganese, applied in nickel compounds, chemical instruments and methods, inorganic chemistry, etc., can solve problems such as poor sphericity, difficulty in preparation, poor particle sphericity, etc., to reduce production costs and process flow The effect of simplicity and good crystallization properties
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Embodiment 1
[0031] Using nickel sulfate, cobalt sulfate, and manganese sulfate as raw materials, configure a 2mol / L uniform nickel, cobalt, and manganese salt mixed solution in a molar ratio of 4:3:3. The liquid caustic soda with a mass fraction of 32% is configured into 5 mol / L lye as a precipitant, and the ammonia water with a mass fraction of 25% is configured into 5 mol / L as a complexing agent for use.
[0032]Add pure water to the reactor to the position of the overflow pipe to make the bottom liquid, stir at 500rpm, after the temperature in the reactor rises to 50°C, under the condition of feeding nitrogen, the mixed salt Solution, alkaline solution, and ammonia solution are fed into the reactor in parallel for reaction. During the reaction, the slurry was taken to test the reaction pH value, ammonia content and particle size. During the reaction process, the pH value was controlled to be 11.6, the ammonia content was 0.7 g / L, and nickel-cobalt-manganese hydroxide with a thickness ...
Embodiment 2
[0034] Using nickel sulfate, cobalt sulfate, and manganese sulfate as raw materials, it is configured into a 1.7mol / L uniform nickel, cobalt, and manganese salt mixed solution at a molar ratio of 5:2:3. The liquid caustic soda with a mass fraction of 32% is configured into 8 mol / L lye as a precipitating agent, and the ammonia water with a mass fraction of 25% is configured into 8 mol / L as a complexing agent for use.
[0035] Add pure water to the reactor to the position of the overflow pipe to make the bottom liquid, the stirring speed is 600rpm, after the temperature in the reactor rises to 55°C, under the condition of feeding nitrogen, the mixed salt Solution, alkaline solution, and ammonia solution are fed into the reactor in parallel for reaction. During the reaction, the slurry was taken to test the reaction pH value, ammonia content and particle size. During the reaction process, the pH value was controlled to be 11.9, the ammonia content was 1.3 g / L, and nickel-cobalt-...
Embodiment 3
[0037] Using nickel sulfate, cobalt sulfate, and manganese sulfate as raw materials, it is configured into a 1.7mol / L uniform nickel, cobalt, and manganese salt mixed solution at a molar ratio of 6:2:2. The liquid caustic soda with a mass fraction of 32% is configured into 10 mol / L lye as a precipitating agent, and the ammonia water with a mass fraction of 25% is configured into 8 mol / L as a complexing agent for use.
[0038] Add pure water to the reactor to the position of the overflow pipe to make the bottom liquid, the stirring speed is 600rpm, after the temperature in the reactor rises to 60°C, under the condition of feeding nitrogen, the mixed salt Solution, alkaline solution, and ammonia solution are fed into the reactor in parallel for reaction, and the slurry is taken during the reaction to test the reaction pH value, ammonia content and particle size. During the reaction process, the pH value was controlled to be 12.2, the ammonia content was 2.2 g / L, and nickel-cobal...
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