Abstract: Various embodiments provide a method comprising producing a cobalt hydroxide bearing material, leaching the cobalt hydroxide hearing material to form a slurry, filtering the slurry to yield solids and a cobalt bearing liquid phase, performing a solution extraction of the cobalt bearing liquid phase to yield a purified cobalt bearing liquid phase, conditioning a first portion of the purified cobalt bearing liquid phase to yield a conditioned cobalt bearing solution and, electrowinning the conditioned cobalt bearing solution to yield cobalt metal.

Abstract: Various embodiments provide a method comprising leaching a cobalt bearing material to form a slurry, filtering the slurry to yield solids and a cobalt bearing liquid phase, performing a solution extraction of the cobalt bearing liquid phase to yield a purified cobalt bearing liquid phase, precipitating cobalt gypsum by adding lime to a first portion of the purified cobalt bearing liquid phase, and recycling the cobalt gypsum to the leaching.

Abstract: Various embodiments provide a method comprising electrowinning a first portion of a conditioned cobalt bearing solution to yield cobalt metal, subjecting a second portion of a conditioned cobalt bearing solution to a first ion exchange to yield a second conditioned cobalt bearing solution, performing cobalt selective solution extraction on the second conditioned cobalt bearing solution to yield a refined cobalt containing liquid and, precipitating a cobalt salt by adding a precipitating agent to a first portion of the refined cobalt containing liquid.

Abstract: Various embodiments provide a method comprising leaching a cobalt bearing material to form a slurry, filtering the slurry to yield solids and a cobalt bearing liquid phase, and forwarding the solids to a second leaching operation.