ALLUVIAL EXPLORATION & MINING
PHOTOGEOLOGY | SEISMIC SURVEY | BANKA DRILLING | MANAGEMENT | TRAINING

ALLUVIAL DEPOSITS
gold
diamonds
ALLUVIAL EXPLORATION
survey
Exploration Tools
BANKA Alluvial Drills
  drilling manual
  HAND drills
  drill parts
  tools 1
  tools 2
  tools 3
  tools 4
  MOTOR drills
ALLUVIAL MINING
example
Engines
DEUTZ engines
diesel-engines
Equipments
mining systems
gravel pumps
water pumps
high pressure      
water pumps
pump stands
couplings
engine-pump frames
Pipes, Hoses, etc.
water systems
Recovery systems
recovery systems
gold recovery
diamond recovery
River Dredges
diver-less dredges
Accessories
generators
firefighting pumps
Trucks 4x4
4x4 trucks
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Alluvial Mining Equipments

The Sluice Box

The sluice box is the most cost effective gold recovery device available. It allows a larger amount of material to be processed. It is quite insensitive to the feed amount and granulometry variations. Also, it will accept vegetation parts, etc. The only aspect interfering with the sluice box ability to recover gold is high clay content of the feed material. The sluice box is the basis gold recovery system of the suction dredges. Properly set, the sluice box can recover up to 325 MESH size gold. The sluice box is not a proper device for the diamond recovery; the pulsation jig is the proper device.

The sluice box on 12-inch suction dredge.

Recovered gold particles size distribution

% of particles in MESH size groups for:

• a/."Banka" drill sample
• b/. Sample from a sluice box (top riffles row #1)
• c/. Sample from a sluice box (top riffles row #2)
• d/. Sample from a sluice box (the top carpet covered area)

The double deck sluice for gravel pump based system.

Making and Setting Sluice Boxes

The size, the inclination, the material of which it is build and the covering of it are all variables depending on the volume of feeding, the feed material granulometry spread and its clay content, the forms of gold particles and the granulometry spread of gold particles.

Often, I receive the emails asking me the details of how to set the sluice. At the same time, the asking person don't supply any of the above information. Most often, because the question is academic or because the person don't know anything about the material they want or are dredging. Well, the ignorance is a bliss, but in this case it is a money wasting bliss.

If you supply me the answers to the above questions, for a fee of 300 Euros deposited to my account, I will supply you the answer how to build and to set the sluice box for the material you plan to mine.