Methods for treating ores

C - Chemistry – Metallurgy – 22 – B

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C22B 1/14 (2006.01) C22B 1/00 (2006.01) C22B 11/00 (2006.01) C22B 11/02 (2006.01)

Patent

CA 2315163

Metals are rendered analyzable, extractable or recoverable from materials, such as complex or refractory ores, by applying shear deformation forces to the materials. The shear deformation forces are generated by methods such as mechanical attrition. Through this process, the precious element-bearing amorphous colloidal silica and other fractions of these ores are reformed and crystallized into what are essentially nanophase materials that show a change of chemical, mechanical, and thermodynamic properties as compared to their original natural state. During or after this transformation, the precious element content of these ores may be reduced to a recoverable state and/or analyzed or detected.

L'invention consiste à appliquer des forces de cisaillement sur des matériaux, tels que des minerais complexes ou réfractaires, de façon à obtenir des métaux propres à l'analyse, à l'extraction ou à la récupération. Ces forces de cisaillement sont produites suivant des procédés tels que l'attrition mécanique. A travers ce processus, la silice colloïdale amorphe portant un élément précieux et d'autres fractions de ces minerais sont reformées et cristallisées en matériaux sensiblement nanophases présentant un changement dans leurs propriétés chimiques, mécaniques et thermodynamiques par rapport à leur état naturel d'origine. Pendant et après cette transformation, le contenu en éléments précieux de ces minerais peut être réduit à l'état récupérable et/ou analysé ou détecté.

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