inline pressure jig - gekko's...the gekko inline pressure jig (ipj) was developed in the early...

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CONCENTRATING ON THE FUTURE, NOW INLINE PRESSURE JIG Do more, with less Gangue rejection+cost effective+continuous gravity separation

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Page 1: INLINE PRESSURE JIG - Gekko's...The Gekko InLine Pressure Jig (IPJ) was developed in the early 1990’s and was the product Gekko Systems was founded on. The IPJ was designed for the

CONCENTRATING ON THE FUTURE, NOW

INLINEPRESSURE

JIGDo more, with less

Gangue rejection+cost effective+continuous gravity separation

Page 2: INLINE PRESSURE JIG - Gekko's...The Gekko InLine Pressure Jig (IPJ) was developed in the early 1990’s and was the product Gekko Systems was founded on. The IPJ was designed for the

• Environmentally engineered• Fully automated with low water and power consumption

The IPJ is a compact, low cost, continuous process that requires minimal infrastructure or logistical

support. The unit is designed to be able to handle a wide feed size range and recover mineral at

liberation size without significant addition of water to the mass balance. A considerable volume

of data now supports the symbiotic benefits of an IPJ and flotation circuit combination to pre-

concentrate an ore and minimise downstream processing requirements. The IPJ can be supplied

as a stand-alone unit or as part of an engineered modular system. The IPJ has very low power and

operating costs; as low as five cents per tonne treated.

The Gekko InLine Pressure Jig (IPJ) was developed in the early 1990’s and was the product

Gekko Systems was founded on. The IPJ was designed for the recovery of free gold. Since

commercialisation in 1996, and due to its large range of jigging parameters and ragging types

possible, the IPJ has successfully been used for a range of minerals, including gold, sulphides,

silver and other heavy minerals.

BACKGROUND

• Continuous gravity recovery• Low cost, heavy mineral concentration or gangue rejection

Page 3: INLINE PRESSURE JIG - Gekko's...The Gekko InLine Pressure Jig (IPJ) was developed in the early 1990’s and was the product Gekko Systems was founded on. The IPJ was designed for the

BATCH VS CONTINUOUS MODELS

3D ENGINEERED SOLUTIONS

The IPJ is unique in its design and use of jigging concepts. The unit is fully encapsulated and pressurised, and combines a circular bed with a moveable sieve action. The encapsulation allows the unit to be completely filled with slurry and water. As a result, slurry velocity is slowed and water surface tension eliminated resulting in higher recoveries. The screen is pulsed by a hydraulic driven shaft to achieve a saw-tooth motion, the optimum wave form for mineral separation. Separation of values from gangue particles occurs based on relative density as well as particle size and shape within the bed and are continuously discharged. The lighter mineral is discharged over the overflow to the outer cone. Both concentrates and tailings are discharged under pressure.For more information visit www.gekkos.com

IPJ600 IPJ1000 IPJ1500 IPJ2400GRAVITY MODULE GENERAL ARRANGEMENT

Fig 1: IPJ 3D Cross-section

THEORY OF OPERATION

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BENEFITS

Low Environmental Footprint

• Low power requirements

• Low water consumption

• Small footprint

• Extraction of coarse mineral or gangue

Increased Returns

• Low operating cost (five cents per tonne treated)

• Low installed cost (reduced capital)

• High availability

Ease Of Operation• Fully automated

• Data collection via SCADA operating system

Five cents per tonne treated

In 2010 the CSIRO performed a Computational Fluid Dynamic (CFD) analysis on the IPJ. CFD uses advanced computer software to model the flow of fluids through a processing facility which subsequently analyses and solves problems involving fluid flows. The CFD analysis found that while fluids accelerated rapidly upwards from the distribution pot, the velocity of particles slowed dramatically once reaching the deceleration chamber. This provides for an optimum separation environment where turbulence is minimised. The result of this is the higher sg model (Fig.4) indicates recovery to concentrate hutch in all size ranges. Additionally on relatively fine sg particles recoveries to concentrate are very attractive, thus expanding the application of the IPJ.The graph above shows the particle size ranges typically treated by common gravity devices. The InLine Pressure Jig is the only gravity device recovering a large size range of fine and coarse particles. Recoveries can be in excess of 90% as demonstrated at Castlemaine Goldfields’ Ballarat mine.

Fig 3. 3000 kg/m3 particles, 100-1000µ Fig 4. 8000 kg/m3 particles, 100-1000µ

983-1000µ

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787

681

576

470

364

258

100-258µ

Particle tracks for different particle density / size

Fig 2. Gravity Device Comparison

UNIQUE DESIGN CHARACTERISTICS

CSIRO CFD ANALYSIS: IPJ CROSS SECTION

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Page 4: INLINE PRESSURE JIG - Gekko's...The Gekko InLine Pressure Jig (IPJ) was developed in the early 1990’s and was the product Gekko Systems was founded on. The IPJ was designed for the

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