close left

Applicable Equipment


Award-winning, portable processing plant for high recoveries by gravity separation.


Flexible plant components for versatile, cost-effective flowsheets.


Innovative design that pre-concentrates high-value material.

Applicable Equipment


Intensive leaching technology in an advanced rolling drum design.


Sulphide gold can be recovered through processes applicable to Mag Screen


Also applicable to Gekko's Electrowinning Cells.

Applicable Equipment


Applicable to Gekko's Resin Column (G-Rex)

Applicable Processes


Saves energy by recovering material into small volumes.


Upgrades the material going forward for economic gains. it.


Innovative flowsheets for coarse crushing and optimal liberation.

Applicable Processes


Controlling viscosity and magnetics in gravity separation feeds.


A low-energy process to recover higher material grades.


A high cyanide and high oxygen reaction boosts recoveries.

Applicable Processes


Optimising the best way to recover minerals from solution.


High-volume electrowinning captures more metal with great efficiency.


Gekko use the latest technologies to design or improve a detox process.

Sulphide Gold

When gold is associated with sulphides, it can be either fully encapsulated by the sulphide particle or partially liberated, i.e. exposed on the edge of the sulphide mineral.

Sulphide complex gold can occur in a wide range of particle sizes. Because cyanide cannot always leach sulphide-associated gold, regrinding the ore is typically required to expose the free gold for recovery by intensive leaching.

Critically, the size at which one can efficiently liberate gold from the host mineral of the particle will determine the process to use for optimal gold recovery.

Gekko flowsheets efficiently recover gold from sulphide complexes

Sulphide Gold Recovery

Pre-concentration of coarse 350 – 500 micron sulphide-associated gold ore, using the InLine Pressure Jig, is required to reject gangue from the high value material. The IPJ, a classic pre-concentration device, is effective in gangue rejection prior to further processing of valuable gold-bearing material.

Other turnkey modular systems for pre-concentrating coarse sulphide-gold ores include the Python plant and the Gravity Flotation Intensive Leach (GFIL) systems, both of which incorporate the InLine Pressure Jig.

Regrinding of pre-concentrated non-refractory sulphide complex gold material, by a conventional regrind mill, can produce free gold particles. This improves the amount of gold that can be recovered by further processing using equipment such as the InLine Leach Reactor.

All gold concentrates produced by the InLine Pressure Jig can be intensively leached using the InLine Leach Reactor.

For ore bodies less than 350 micron in size, a flotation flowsheet will be recommended.

Gekko’s Approach

Laboratory testwork must be completed on the ore body. It's important to characterise the presence of coarse sulphides or dissociated sulphides, as well as find out whether the ore is refractory or not, and what grade (g/T) the ore is. This information is critical for Gekko to begin to design an optimal recovery flowsheet for a specific ore.

Therefore, if testwork has not been done, it’s recommend the ore be analysed by Gekko’s fully accredited Laboratory Service to enable the best design of an effective flowsheet that recovers sulphide complex gold at the lowest operating and capital costs.

Coarse Gold Separation At Bendigo Minings Kangaroo Flat Operation

Technical Papers (3 of 52)

More Technical Papers
technical paper
Technical Paper 048 - Coarse Gold Separation At Bendigo Minings Kangaroo Flat Operation

AusIMM Gravity Gold Conference, Ballarat, Australia. M. Braaksma, P. Gray | 04 September 2010

technical paper
Technical Paper 047 - Is The Python Right For Me Python Amenability Test Work

AusIMM Gravity Gold Conference, Ballarat, Australia. T. Hughes, K. Donaldson, and B. Murphy. | 03 September 2010

technical paper
Technical Paper 046 - The Role Of Gravity And Intensive Cyanidation In Processing Preg Robbing Gold Ores

AusIMM Gravity Gold Conference, Ballarat, Australia. N. Katsikaros and P. Davies. | 02 September 2010

From the left: Mick Speed, Gold Room Foreman, Peter Johnston, Manager Metallurgy, Yavuz Atasoy, Senior Development Metallurgist

Case Studies (3 of 14)

More Case Studies
case study
Case Study - St Ives Gold Mine

Gekko recently successfully installed an ILR2000 Batch unit at Goldfields' St Ives Mine in Kambalda, WA, which is one of Australia's largest gold mining operations. | 01 January 2003

case study
Case Study - Penjom Gold Mine

Gekko Systems installed six InLine Pressure Jigs (IPJ500) to recover both free and sulphide associated gold from grinding circuit. | 13 June 1998

case study
Case Study - Target Division

In July 2000, Target - a fully owned subsidiary of Avgold Limited - decided to install a Gekko ILR100BA to treat the gravity concentrate. | 01 February 2003

Gangue Rejection Circuit Increases Python Throughput x 5

Articles (3 of 88)

More Articles
Gekko Wins Environmental Excellence Award

"The entire team at Gekko, in particular our Cyanide (CN) Detox Group, is immensely proud to have been independantly nominated for this award." | 01 February 2013

Gekko Signs-up Engineering, Installation and Technology Deal with Brazahav Resources Inc

Gekko Systems is pleased to announce the signing of a deal with Brazahav Resources Inc for the design, engineering, supply and installation of a complete intensive leaching circuit for the Salinas... | 17 April 2013

Gangue Rejection Circuit Increases Python Throughput x 5

The Python 500 modular processing plant was originally developed to process ore in an underground environment. | 01 September 2012

To Top