Embodiments of the invention relate to processes and apparatus for the washing and 
recovery of 
metal-containing catalyst solids in a form suitable for reclamation. More specifically, a catalyst 
recovery process comprises removing an organic residue with a washing medium from a 
metal-containing catalyst solids, recovering washed solids, and treating the washed solids under oxidative conditions to form non-reactive solids. The treatment oxidative conditions may be effective to convert the 
metal(s) into an 
oxide form and / or may facilitate the removal of remaining organic residue from the washed solids. The treatment of the washed solids may comprise 
calcination. In some embodiments, the metal-containing catalyst solids may be recovered from a 
slurry stream, and the process further comprises passing the 
slurry stream though a separation unit to obtain a catalyst-enriched retentate 
slurry. In some embodiments, the organic residue comprises a 
hydrocarbon wax, and the 
solid catalyst is a 
hydrocarbon synthesis particulate catalyst.