Classifying – separating – and assorting solids – Plural – diverse separating operations – Sifting and stratifying
Reexamination Certificate
2011-03-22
2011-03-22
Matthews, Terrell H (Department: 3653)
Classifying, separating, and assorting solids
Plural, diverse separating operations
Sifting and stratifying
C209S014000, C209S040000, C209S562000
Reexamination Certificate
active
07909169
ABSTRACT:
Various embodiments of methods and systems are provided for mining alluvial gold deposits. The methods can comprise collecting feed from alluvium and washing the feed at high pressure. The feed can be separated into a plurality of separate fractions. At least one fraction is transferred to a metal sensor system using a conveyer, wherein when gold is detected in a piece of the fraction, an air blast can be targeted and delivered at the piece, with the air blast diverting the piece to a receiving container.
REFERENCES:
patent: 3888351 (1975-06-01), Wilson
patent: 4265743 (1981-05-01), Younge
patent: 4347130 (1982-08-01), Younge
patent: 5314124 (1994-05-01), Kindig
patent: 5568896 (1996-10-01), Adams et al.
patent: 6096991 (2000-08-01), Stone et al.
patent: 6216367 (2001-04-01), Tubbs
patent: 2007/0278139 (2007-12-01), Cowling et al.
Haver & Boecker, The Screening Circle, HBL-TYCAN 020 E—Revised Jul. 2005, pp. 1-19, St. Catharines, Canada.
James Slade, Update on Steinert ISS 160 for Placer Mining, Memo—ISS Report, Apr. 2, 2008, pp. 1-6, AuVERT Gold Systems Inc., Langley, Canada.
D.E. Walsh, Eddy-Current Separator Technology As a Novel Approach to Alaskan Placer Gold Recovery, 2003 SME Annual Meeting, Feb. 24-26, 2003, pp. 1-5, Cincinnati, USA.
Knelson, Semi-Continuous Knelson Concentrators, Jun. 2005, Knelson, Langley, Canada.
Knelson, Continuous Variable Discharge Knelson Concentrator, Knelson, Langley, Canada.
Constep, The Consep Acacia Reactor, ConSep, Wetherill Park, Australia.
Steinert, Induction Sorting System, pp. 1-4, Steinert, Widdersdorfer Straβe, Germany.
Eriez, Eddy Current Separators Principle and Practice, Eriez Magnetics Europe Limited, Bedwas, United Kingdom.
L-Class Vibrating Screens—Level (Horizontal) Vibrating Screens, TYCAN—Vibrating Screen Division of W. S. Tyler Canada Ltd, St. Catharines, Canada.
James Varela, HAVER Hydro-Clean, Jul. 9-11, 2008, pp. 1-40, Haver & Boecker, Santiago, Chile.
Chen David
DWC Law Firm, P.S.
Matthews Terrell H
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