Author/Authors :
Rane، نويسنده , , M.V. and Bafna، نويسنده , , V.H. and Sadanandam، نويسنده , , R. and Sharma، نويسنده , , A.K. and Ramadevi، نويسنده , , K. and Menon، نويسنده , , N.K. and Fonseca، نويسنده , , M.F. and Tangri، نويسنده , , S.K. and Suri، نويسنده , , A.K.، نويسنده ,
Abstract :
With the ever-increasing demand for cobalt in India it is worthwhile exploiting secondary resources. A step in this direction has been taken in our laboratory at BARC by recovering cobalt from spent ammonia cracker catalyst after leaching with sulfuric acid. The removal of Fe3+ and Al3+ from the leach liquor can be achieved by either chemical precipitation or solvent extraction using DEHPA as an organic extractant. When nickel is present as an impurity, it is separated by extraction with LIX 84I. This process has been scaled up and it has been possible to obtain a cobalt recovery of ∼85% with a purity greater than 99.9%.
Keywords :
Solvent extraction , Ammonia cracker catalyst , Cobalt , DEHPA , LIX 84I
