B - Operations – Transporting – 03 – C
Patent
B - Operations, Transporting
03
C
209/163
B03C 7/08 (2006.01)
Patent
CA 1206922
APPARATUS FOR DRY PLACER MINING AND METHOD OF OPERATING SAME ABSTRACT OF THE DISCLOSURE An apparatus for dry placer mining to concentrate recoverable metallic constituents, such as gold or silver, from a dry gravel mix containing same is comprised of a frame for supporting and guiding an endless belt along a path including an upwardly inclined segment for receiving gravel particulate; an endless belt including a woven mesh belt member, a plurality of riffle members disposed in spaced parallel relationship within the intertices of the mesh member, and a composite fabric member disposed in face-to-face contact with the bottom surface of the mesh member; and a fluidizing member for passing a fluidizing gas upwardly through the endless belt along the inclined segment for fluidizing the gravel particulate and for establishing an electrostatic charge proximate the riffle members. The composite fabric member is specially constructed to permit a proper airflow for fluidizing the particulate and for assisting in the establishment of an electrostatic potential proximate the riffle members. This special construction includes a layer of an air-pervious polymeric foam disposed intermediate a pair of cloth fabric layers having progressively tighter weave patterns.
428189
Lavigne Gordon
Ogilvy Renault
LandOfFree
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