Sodium Hydroxide → Nickel-cobalt-manganese hydroxide

Temperatur

50 °C

In a 2-L (liter) reaction vessel, 1.8 L of the mother liquor obtained in the above-described Example 1 was poured, and agitated at 250 rpm while maintaining the internal temperature at 50±1° C. To this, while supplying an aqueous solution of metal sulfates containing 1.5 mol/L of nickel sulfate, 1.5 mol/L of manganese sulfate and 1.5 mol/L of cobalt sulfate at a flow rate of 0.4 L/hr; and simultaneously supplying a 1.5 mol/L aqueous solution of ammonium sulfate at a flow rate of 0.03 L/hr; an 18 mol/L aqueous solution of sodium hydroxide was continuously supplied so that the pH in the reaction vessel was maintained at 11.05±0.05. The mother liquor in the reaction vessel was periodically extracted, and the slurry was concentrated until the final slurry concentration became about 1000 g/L. The nickel concentration in the periodically extracted mother liquor from the reaction vessel was 22 ppm. After the target slurry concentration had been obtained, the slurry was aged at 50° C. for 5 hours, filtration and water washing were repeated to obtain coagulated particles of a co-precipitated nickel-manganese-cobalt hydroxide.

1. customobtained in the above-described Example 1
2. additionwas poured
3. temperaturewas maintained at 11.05±0.05
4. extractionThe mother liquor in the reaction vessel was periodically extracted
5. concentrationthe slurry was concentrated until the final
6. concentrationslurry concentration
7. concentrationThe nickel concentration in the periodically extracted mother liquor from the reaction vessel
8. concentrationAfter the target slurry concentration
9. customhad been obtained
10. filtrationfiltration and water washing

ORD-Eintrag

ord-8258563a3f1c44f1b9f6a5529bcd3f18

Quelldatensatz

uspto-grants-2010_08

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US07785742B2