Methods and systems for recovering alluvial gold
First Claim
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1. A method of mining alluvial gold deposits, comprising:
- collecting feed from alluvium;
washing the feed;
separating the feed into a plurality of separate fractions, each fraction containing solids having a different range of diameters from the solids of at least one other fraction; and
detecting gold using a sensor and diverting its path of movement using a magnetic field.
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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.
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Citations
17 Claims
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1. A method of mining alluvial gold deposits, comprising:
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collecting feed from alluvium; washing the feed; separating the feed into a plurality of separate fractions, each fraction containing solids having a different range of diameters from the solids of at least one other fraction; and detecting gold using a sensor and diverting its path of movement using a magnetic field. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system for mining alluvial gold deposits, comprising:
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a wash system for washing feed to the system; a separation system for separating the feed into a plurality of separate fractions, each fraction containing solids having a different range of diameters from the solids of at least one other fraction; a nugget recovery system for processing at least one of the fractions, the nugget recovery system having a sensor for detecting gold in the fraction, wherein when gold is detected in a piece of the fraction, a nozzle of the nugget recovery system can release an air blast targeted at the piece; and a second nugget recovery system for processing at least a portion of one of the fractions using a sensor for detecting gold in the contents of the at least a portion of one of the fractions and a system for generating a magnetic field to divert a path of a gold piece using the magnetic field. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A process for mining gold deposits, comprising:
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separating feed for a system into a plurality of separate fractions, each fraction containing solids having a different range of diameters from the solids of at least one other fraction; transferring at least one of the fractions to a first nugget recovery system, wherein when a sensor detects gold, an air blast is targeted and delivered at the piece to divert a path of movement of the piece to a receiver; and transferring the contents of the receiver to at least a second nugget recovery and detecting gold in the contents using a sensor, whereupon a path of movement of a gold piece is diverted by a magnetic field. - View Dependent Claims (15, 16, 17)
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Specification