Study of New Process for Recovery of Cobalt Oxide from Al-containing Cobalt Sulphate Solution

Study is made of a new process for directly extraction of the cobalt oxalate from ammonium oxalate in the acid solution directly dissolved from lithium cobaltate.Aluminum in the acid solution is completely complexed with F salt.Then,cobalt is precipitated with ammonium oxalate at pH=2 and under 60 ℃.Finally,the cobalt is calcined into cobalt oxide in the muffle.To obtain the product,which is up to the requirement of the Co2O3-Y1(Chinese code GB6518-86).The dosage of the F salt is 110% of the theoretic dosage;while the dosage of ammonium oxalate can be reduced by 50%.The rate of cobalt precipitation with ammonium oxalate is 99.37%.