Process for preparing superfine cobalt oxide powder by booster parallel-flow precipitation

Process for preparing superfine cobalt oxide powder by booster parallel-flow precipitation

  • CN 1,693,213 A
  • Filed: 05/16/2005
  • Published: 11/09/2005
  • Est. Priority Date: 05/16/2005
  • Status: Active Application
First Claim
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1. a supercharging parallel-flow precipitation prepares ultra-fine method of all disperseing cobalt oxide powder, comprises that cobaltous carbonate, filtration, washing, drying are produced in preparation, the preparation of carbonate solution, the precipitin reaction of cobalt salt solution, is sintered into finished product, it is characterized in that:

  • 1. the content of cobalt is the 60-200 grams per liter in the cobalt salt solution, and the pH value is 1.5-5.0, the tensio-active agent of interior adding cobalt contents 0.01-5%;

    2. precipitin reaction is to adopt topping-up pump to add a small volume with high-speed jet form and stream respectively cobalt salt solution and carbonate deposition agent to have in the intermediate reaction groove of steel basin of violent stirring (400-600 rev/min), after realizing high-intensity quick uniform mixing and stopping 3-5 minute, flowing in the steel basin of a large volume that (80-200 rev/min) continue in temperature is 25-90 ℃

    again, insulation ageing reaction 0.5-5 hour.

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