El método Merrill-Crowe es un proceso metalúrgico clave en la minería para recuperar oro y plata de soluciones cianuradas, basado en la cementación (precipitación) de estos metales preciosos sobre polvo de zinc; la solución rica en metales se clarifica, se desoxigena en torres de vacío y luego se mezcla con zinc en polvo para que desplace al oro y la plata, que precipitan, se filtran y se funden para obtener barras de doré, logrando recuperaciones superiores al 98%. Pasos principales del proceso
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