The Merrill Crowe Process | PDF | Filtration | Zinc
A . Paul Hampton,P.Eng. ABSTRACT. The classical method for the recovery of precious metals from cyanide leach solutions is. cementation using zinc powder, the Merrill Crowe process, whch was developed in the 1890's. and used almost exclusively until the introduction of carbon adsorption processes in the 1970's. and 1980's.