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Gold recovery plant(Module)

Number of hits:times   Update time:2017-04-10 11:51:01
Application:Alluvial gold mining, River sand gold mining, Clay deposit including Gravel, Laterite,Saprolite, Clay & Sticky mining.
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Handling capacity:
   Model G30: 30 tons per hour;
 Model G50: 50 tons per hour;
 Model G100: 100 tons per hour;

The Recovery of Gold

With the rising price of gold and the limited amount of mineable land, people are now focusing on the recovery of fine gold this requires enhanced gravity concentrators. Some rivers of the word have been sluiced as many as 6 times yielding profitable gold each time and demonstrating that traditional sluices can have very poor mineral recovery. Alluvial miners commonly stop digging at the first layer of clay or throw it aside acknowledging their inability to recover the gold.

The Clay Gold Washing Plant incorporates scrubber technology with world class centrifugal gravity concentrators.

What is a Scrubber?

A scrubber is not a trommel and a trommel is not a scrubber. The two are quite different and quite inefficient when incorporated in the same mechanism.

A rotating screen needs a relatively low rpm to allow the fines to pass through the screen. An effective scrubber needs a relatively high rpm to lift the material higher, turn the material over and to input energy into the scrubbing action between the larger rocks and the clay material. Comparatively, a scrubber will have at least twice the horse power as the same dimension and capacity trommel.

A scrubber is a high rpm autogenousmill. A scrubber will rotate at 75% of the critical rpm.The critical rpm is the rpm required for the material to cling to the wall and rotate with the drum without falling.

A scrubber uses the large rocks to break up the finer material in the same way a ball mill uses steel balls to break up ore.

Material is loaded into the plant feed hopper through a static scalping grizzly with 75 mm bar spacing. Oversize is to be periodically removed manually from the grizzly.

Undersize feed material is washed into the scrubber feed chute by water jets strategically placed in the feed hopper and by a manually operated water monitor.

Water is piped from an on board water manifold system that supplies water to the complete plant from the customers primary water supply. Material is scrubbed and clays and silts dispersed into the slurry.

Slurry is discharged over the double deck vibrating screen.

Oversize (+14mm) from the vibrating screen is discharged via a chute to ground level where it can be removed by the customers mobile equipment or by the clients conveyor system.

Product from the bottom deck oversize (-14mm + 6mm) is discharged onto the sluice, complete with riffles and  mats, where coarse gold will be recovered.

The screen undersize (-6mm) is pumped from the screen undersize hopper to the concentrator feed box, then forwarded to the centrifugal gravity concentrator.

75 mm passes the grizzly and into the scrubber

14 mm + is rejected by the top level of the vibration screen

2 mm + to 14 mm is feed to the high efficiency sluice

2mm is distributed to the high efficiency sluice and gravity concentrator.