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The gold classifier dramatically improves your gold recovery. By pre sizing the gold bearing sands and gravels you are able to provide a much higher quality separation of gold from waste rocks and sands.
Most classifiers work with water from a stream or river. In other words the classifier needs water to wash the sized sand and small gravel (with gold) through the mesh.
The pre sizing mesh is held by a frame made from aluminum, plastic or wood. The aluminum classifier is usually part of a sluice box or high banker and is fitted above the sluice frame. The plastic supporting system is usually a bucket with the bottom cut out of it. The sieve * is fitted to the open bottom allowing accurate sizing of the gold bearing material.
A wooden classifier frame can easily be made to almost any shape. The it is just a matter of attaching the mesh to the bottom of the wooden frame .A gold recovery classifier is an important fundamental part of gold recovery for all types of panning, sluicing, grizzly or high banking. Whether your classification is multi-stage, over-under or the large spinning drums of a trommel operation, gold classification is a must.
A fan designed classifier minimalizes handling the rock / sand / gold mixture to just shoveling. Most gold classifiers fail or fall down by having you rotate buckets, screens and other labor intensive methods to sort your materials.
Many large nuggets have been lost by incorrectly sizing or judging the gold possibilities of an area. It is worth placing a crude secondary sluice box at the exit of your classifier just to make sure a large nugget or two doesn't end up back in the stream. Use a lot of water flow in this second sluice box. We want to force the larger rocks through the box as quickly as possible. WHEN you catch that large nugget it will stick in the sluice without a problem.
* Traditionally, sieves and screens were used to pre size your material down to the right size for gold separation.
This is a "fan style" classifier. Easy to make and one of the fastest methods of sorting worthless rock from the valuable gold materials. Virtually jam proof, this high capacity sorting device delivers gold laden sands and gravels to the sluice box almost as fast as you shovel.
There is a light weight, heavy wire classifier built just for the High Volume Fine Gold Sluice Box. We need to accurately separate fine aggregate materials (sand and gravel) with considerable speed. Buckets with screens, sieves and other slower, jam prone separators won't work.
In this case, simpler is better.
The fan design of this classifier makes fine gold recovery easy.
In essence, we reject or shun everything except the fine gold bearing materials.
After that our sluice box will separate the gold from the waste materials.
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