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Gold concentrators and gold recovery gold concentrators.

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Multi Helix Spiral
 

The Reverse Multi-Helix Spiral Concentrator is available in 3 models:the 24 "Rougher,the 16 "Cleaner,and the 16 "Finisher.Each concentrator can be set up as a continuous or batch feed. All units are commercial duty, gravity concentrators for both alluvial and fine milled hard rock ores.

Oro 's Helix Spiral concentrators can achieve the highest concentration ratio AND recovery possible with any type of ore that can be concentrated by gravity. The design and engineering principles of the multi-helix spirals inside the concentrator allow for full adjustment to the ore-matrix or concentrate, yielding the peak concentration ratio with virtually no loss of gold. With this unique ability, it means higher production rates, and a reduced amount of concentrate resulting in a smelting grade concentrate or finished clean gold.

The Helix Spiral can be setup in parallel, series, or as a stand-alone concentrator; in parallel for higher production
rates, in series for mixed minerals, and stand-alone for pure gold recovery. The configurations are unlimited.
Moreover,by using a 24 "Rougher to feed a 16 " Cleaner,and the cleaner feeding a 16 " sellable or smelt-grade gold in your hand, without anyone touching it.

 
Cleaner Model Spiral Concentrator
 
A continuous or batch feed secondary concentrator for processing primary sluice concentrate, primary jig concentrate, centrifuge concentrate, and milled hard-rock ores. Set up as a cleaner, the 16 "or 24 "spiral concentrator is perfect for the application of mercury recovery and tailings projects. For highest production performance, it is recommended to classify material to 1/4 " minus.
 
Finisher Model Spiral Concentrator
 
The finisher model can be used in conjunction with our standard Secondary Cleaner to shorten clean-up time when concentrating large volumes,or in certain custom applications. Highest production performance is with fine concentrates of materials less than 1/8 ".Up to 90% of all concentration and clean-up needs can be achieved with the standard 16 "Secondary cleaner. Ask us for advice about your particular application.
 
24" Rougher Model Spiral Concentrator:
 
Used as a Primary Concentrator for both alluvial and milled hard rock ores, the 24" Spiral is ideally suited for mixed mineral hard rock ore concentration. This concentrator can't be beat when the job calls for a continuous concentrator for Gold, Glena, Chalcopyrite and Sulfide type hard rock ores. As well replaces Jigs for heavy black sand ores. Fine gold recoverable ability + 90% to 200 mesh in production and 99% above 140 mesh.
 
16" Reverse Multi-Helix Spiral Cleaner Specifications:

Production Rate: 1-2 tons/hour
Water Consumption: 15-20 GPM @ 20-40 PSI
Power Requirements: ½ hp @ 120V/ 50 or 60Hz
Dimensions: 84" x 36 x 60" (L x W x H)
Powder Coat Finish
Power supply and water pump not included
 
16" Reverse Multi-Helix Spiral Cleaner Specifications:

Production Rate: 1-2 tons/hour
Water Consumption: 15-20 GPM @ 20-40 PSI
Power Requirements: ½ hp @ 120V/ 50 or 60Hz
Dimensions: 84" x 36 x 60" (L x W x H)
Powder Coat Finish
Power supply and water pump not included
 
24" Reverse Multi-Helix Spiral Rougher Specifications:

Production Rate: 12-15 tons/hour
Water Consumption: 40-50 GPM @ 20-40 PSI
Power Requirements: 3 hp / Single or 3-Phase 220/440V / 50 or 60Hz
Dimensions: 153" x 34.5" x 77" (L x W x H)
Powder Coat Finish
Power supply and water pump not included
 
THEORY OF OPERATION

The actual "working surface" of the concentrator is made up of a series of leads running lengthwise "in reverse" in a critical tight spiral pattern along the inner barrel. The leads have a set angle on the uphill side and a counter angle on the downhill side, and are larger in height and width at the rear of the barrel than at the front. Exact angles and dimensions to create ultimate efficiency took hundreds of hours of trial and error testing. During operation, the decreasing height and width of the leads create the classifying effect as the ore passes through the barrel. As the ore is being classified, the gold and heavy concentrate settle into the bottom of the groves made by the leads and is conveyed upwards (in reverse). As the classified ore reaches the upper portion of the barrel, a set of angled spray heads continuously "wash back" the lighter gangue material while the gold and heavy concentrate continue moving forward, falling out of the groves and into the concentrate holding bin. This is a continuous process allowing the gold concentrate to be recovered in a hands off fashion while the waste is being discharged out of the rear of the Spiral. For larger volume processing, multiple Spirals can be installed in "series" with the ore being feed automatically from one Spiral to the next.

VERSATILITY

For secondary and final processing of sluice concentrates, primary jig concentrates and centrifuge concentrates - fully adjustable allowing for "rough" and/or "tight" cuts, adjusts to a wide range of ores and concentrates to achieve a smelting grade product - also great for bulk sampling and testing head ores - continuous feed or batch feed - portability allows you to move around your site or work off site (indoors or outdoors) - classify any heavy metal or heavy mineral such as gold, silver, platinum, tantalum barite, scheelite, sulfides, tin, galena, lead shot and bullets etc. The spiral is also great for recovery of mercury and tailings projects. All considered, the Helix Spiral is the most versatile and practical piece of mining equipment you will ever own!
 
 
 




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Oro Industries

Marysville, CA.


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GOLD CONCENTRATORS