The DEROCKER is ideal for alluvial
mining in areas with large boulders, and can easily handle light to
moderate clay with an optional high-pressure spray system. It delivers a
-2" product to downstream recovery and discharges clean washed +2" rock
and boulder separately.
- Automatic, spring loaded feeder
- Self-cleaning Grizzly Bars
- All rocks washed thoroughly
The DEROCKER was developed in Canada’s historic Yukon Territory by a
professional Placer Miner to overcome the problems of plugged grizzlies
and effectively washing course rocks, boulders and gravel to liberate
and retain the particles of gold.
The DEROCKER easily handles angular and slab shaped materials or
boulders up to 4 feet in diameter. Unlike other systems, the greater the
percentage of larger rocks and boulders, the greater yardage the
DEROCKER will process.
DEROCKER Hydraulics: As the subframe moves back and forth , the deck (grey chain) undulates, causing the material to move down the deck with the 2" minus dropping through the grizzly
bars (not shown) and out the bottom to the gold recovery system,
leaving the washed coarser material on the top of the deck to be discharged.
|Specifications||Model 8 x 20||Model 10 x 20|| Model 14 x 20|
Average Gravel Capacity
|Cubic Yards/Hour ||80 - 150||100 - 200||150 - 280|
|Tons per Hour||(120 - 230)||(150 - 300)||(230 - 420)|
|Cubic Meters Per Hour||60 - 120||75 - 150||120 - 220|
1,000 - 1,800 GPM
3,800 - 6,800 Litres/Min
1,500 - 3,000 GPM
5,600 - 11,500 Litres/Min
8,000 - 15,400 Litres/Min
|Operating Dimensions|| 8' 6" x 21'+||10' 5" x 21'+|
14' 5" x 21'+
|Shipping Dimensions||8' 6" x 21'+||10' 5" x 21'+|
1 piece 10' 5" x 21'+
2 pieces 3' x 21'+
|Weight||45,000 Lb||47, 500 Lb||54, 000 Lb|
| ||20,500 Kg||21, 500 Kg||24, 500 Kg|
|30 HP Electric ||40 HP Electric ||50 HP Electric |
There are a variety of loading decks, spray systems and product sizing options available for the DEROCKER customized to your specific mining needs.
With the DEROCKER set on a eleven degree slope, the material to be
processed is loaded into a surge pile in the upper end of the machine
where a built-in Spring-Loaded Feeder evens the material flow across the
deck while the loader cycles to the pit for more material.
gold bearing boulders and gravels are moved across the self-cleaning
grizzly bars in a wave action while being washed by high pressure from
the water manifold. The coarse, rocky material is discarded from the
lower end of the DEROCKER where it can be easily removed.
The 2" minus fines wash through the slots between the grizzly bars
and are carried out the bottom to suitable gold recovery equipment
(Centrifuges, Circular Jigs and Sluices, available from RMS) by the
process water. The total water requirement of the system is relatively
low as the sluice uses the same water that is used to wash the boulders.