A method and apparatus are disclosed for separating target particles from surrounding materials such as separating gold particles from the clays in placer deposits. The enveloping material is converted to a slurry, then pumped into a collision chamber through pairs of opposing nozzles. Sets of slurry...http://www.google.fr/patents/US20020182981?utm_source=gb-gplus-shareBrevet US20020182981 - Method and apparatus for hydroattrition scrubber
Numéro de demande: 09/863,238 Numéro de publication: US 2002/0182981 A1 Date de dépôt: 21 mai 2001 Brevet délivré: US6691938 ( Date de délivrance 17 févr. 2004)
