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Brochure - InLine Spinner

Another step forward in gravity separation

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Brochure - Unique Hardware

Smart technology for step change benefits

Applicable Minerals

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Free gold is unbound to other materials and is easy to liberate.

Applicable Processes

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A low-energy process to recover higher material grades.

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InLine Spinner

Another Step Forward in Gravity Separation

Clean, high-grade concentrates of gold and heavy minerals are achieved with Gekko’s InLine Spinner (ISP). The simple, low maintenance ISP is a cost-effective tool for separating coarse and fine particles.

Adding an ISP to mine operations will upgrade recoveries from intermediate or low-grade ores and lower operating costs. It requires no water for elutriation, is fully automated and can produce a high-grade smelter-ready product. Furthermore, because the product volume is smaller, fewer chemicals are required downstream, offering significant cost savings. 

Gekko's innovative ISP is a low risk, low cost, high performance unit.

Benefits

The innovative ISP design, based on well-established metallurgical concepts, is a low risk, low cost, high performance unit.

The ISP consumes a very small volume of water, compared to other centrifugal systems, in order to flush the bowl.

The ISP achieves high mineral recoveries for both coarse and fine mineral particles as confirmed by laboratory testing and proven installations.

Lower operating costs, and therefore faster financial returns, are achieved due to the ISP’s simple design and minimal water requirements.

The ISP’s rapid concentrate dump cycle allows operators to vary machine parameters in step with the processing run to achieve higher-grade recoveries.

The simple ISP design makes it straightforward to manufacture, which ensures a fast lead time, but also provides easier maintenance, thus reducing downtime.

Often incorporated as a second gravity step for mining operations, the ISP further concentrates and upgrades material from the IPJ or other jigs.

This simple unit for small applications contributes to the overall success of a process flowsheet and offers a cost-effective way to separate free gold from sulphides. The ISP is extremely effective for recovering coarse free gold from concentrates and for alluvial operations.

Low water consumption by the ISP reduces the total water required in plant operations. Furthermore, the ISP’s fast dump cycle saves time and speeds up processing.

In addition, higher recoveries of coarse and fine particles lower mine operating costs substantially. A fully programmable logic controller automates ISP operations to improve workflows and reduce down time. 

How the ISP works

A pre-concentrated slurry is fed into the ISP’s spinning polyurethane bowl. The bowl spins with low centrifugal force to create a vortex in the slurry. This action forces the dense mineral-containing particles to gently sediment against the inside wall of the bowl in small ridges or ‘riffles’.

Simultaneously, a swirling metal bar, called the cutter bar, circles the inner face of the bowl, parallel to the mineral deposits, creating a mechanical turbulence like a river eddy. This releases light gangue particles trapped underneath that are contaminating the dense mineral particles.

Other batch centrifugal concentrators perform this function using water spray units that require distilled water on site and continuously supplied to the unit, complicating the instrument.

In addition, other concentrators use higher g-forces to speed up the process, however this can promote contamination and other problems associated with compaction of material.

The depth and design of the riffles is important and provides a clean separation zone to heavy mineral particles with extremely low gangue contamination.

Light tailings spill over the top of the bowl and are removed via the tailings outlet. When the batch spin is complete and the waste products have been removed, high pressure water jets flush out the riffles in a small volume. The concentrate is collected from the outlet at the bottom of the bowl. 

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 034 - A Focus On Gravity Recovery Improves Environmental And Cost Outcomes

AusIMM World Gold Conference, Cairns Australia. A.H. Gray and T. Hughes. | 01 October 2007

technical paper
Technical Paper 028 - Maximizing Gravity Recovery Through The Application Of Multiple Gravity Devices

Gravity, Perth, Australia. J.A. Abols and P.M. Grady. | 01 March 2006

“I am also very impressed with the InLine Spinner…. simple, low maintenance unit.” Kurt Tiedemann, Plant Metallurgist

Case Studies (2 of 14)

More Case Studies
case study
Case Study - Ballarat Goldfields

Gekko Systems have recently designed, engineered and built the Stage 1 process plant for Ballarat Goldfields (BGF). | 01 April 2006

case study
Case Study - Thunderbox

The Gekko Gravity System Thunderbox was commisioned in May 2003 and has demonstrated its ability to achieve gravity gold recoveries in line with the intial test work conducted during the .... | 01 May 2003

Gekko Modular Plant for REO Mongolia

Articles (1 of 85)

More Articles
article
Gekko Modular Plant for REO Mongolia

Another first for Gekko Systems is the recent installation of a gravity plant for REO LLC in Mongolia, the country’s only gold mining company with an underground operation. | 01 October 2013

St Ives - St Ives Gold Mining Company Pty
58
InLine Spinner
22
-31.2766
121.722

St Ives - St Ives Gold Mining Company Pty

Kambalda, WA
January 2003

The St Ives mine is located in Western Australia, 19km southeast of Kamblada and 80km south of Kalgoorlie. Its operations are conducted through several open-pits and four underground mines, with a CIP processing plant.

Mornington - Pacific Minerals Pty Ltd
58
InLine Spinner
25
-38.2232
145.041

Mornington - Pacific Minerals Pty Ltd

Mornington, Victoria
July 2013

Pacific Minerals Pty. Ltd. is a coal mining service company in Mornington. This private company was founded in 2001. Pacific Minerals Pty. Ltd. has been around 4 fewer years than the typical company in Australia, and about as long as the typical average coal mining service company.

Wood Points - Heron Resoruces Ltd
58
InLine Spinner
22
-31.9506
115.84

Wood Points - Heron Resoruces Ltd

Kalgoorlie, WA
January 2007

~~The Woodlawn Zinc-Copper Project is based at the former Woodlawn Mine site located 30 km south of Goulburn and 220 km southwest of Sydney, and comprises two significant poly-metallic resource-based assets; the Woodlawn Underground Project (WUP) and the Woodlawn Tailings Retreatment Project (WRP). A highly successful Preliminary Economic Assessment report released 2 June 2015, delivered a strong business case for the Woodlawn Zinc-Copper Project. The Feasibility Study commenced immediately after the completion of this highly successful PEA. With the completion of the Phase II drilling program in November 2015, the Company continues to make excellent progress with the Woodlawn Feasibility Study. Final drill hole surveying and resource modelling is now proceeding. Additional components to this detailed study including metallurgical testwork, mining and geotechnical engineering are all well underway and the study remains on target for completion in the second quarter of 2016.

Driefontein - Gold Fields
58
InLine Spinner
22
-31.2648
23.0577

Driefontein - Gold Fields

Goudveld, South Africa
January 2000

The Driefontein Gold Mine, which is located 70 kilometers west of Johannesburg, near Carletonville in the Gauteng province of South Africa, has produced more than 100 million ounces of gold during its 50-year life. Despite its prolific production history, this mine still has 52.0 million ounces of gold Mineral Resources, which includes approximately 17.2 million ounces of Mineral Reserves.

Alluvial - Molopo NL
58
InLine Spinner
26
-33.8624
151.207

Alluvial - Molopo NL

Sydney, NSW
January 1998

Website Under Maintence

Wilsons Hill - GBM Gold Ltd
58
InLine Spinner
22
-36.7704
144.267

Wilsons Hill - GBM Gold Ltd

Bendigo, Victoria

GBM Gold Ltd (GBM) is focused on becoming a strong gold production company – initially from building a solid gold production base in Central Victoria.

Creswick - Creswick Quartz and Stone
58
InLine Spinner
26
-37.3208
143.895

Creswick - Creswick Quartz and Stone

Creswick
November 2015

Since 1996 Creswick Quartz has been conducting its quartz operations at Creswick/Smeaton Victoria. 

The activities of the company involve the processing of quartz from old mines tailings being remnants of the gold rush in the 1800s and early 1900s in Western Victoria. Creswick Quartz screens material removed from the tailings heaps, washes the aggregate and crushes quartz. The process also involves the selection of material suitable for sale. The site of the company’s crushing plant has been in continuous operation since the 1930s.

Creswick - Creswick Quartz and Stone
58
InLine Spinner
26
-37.3208
143.895

Creswick - Creswick Quartz and Stone

Creswick
January 2005

Since 1996 Creswick Quartz has been conducting its quartz operations at Creswick/Smeaton Victoria. 

The activities of the company involve the processing of quartz from old mines tailings being remnants of the gold rush in the 1800s and early 1900s in Western Victoria. Creswick Quartz screens material removed from the tailings heaps, washes the aggregate and crushes quartz. The process also involves the selection of material suitable for sale. The site of the company’s crushing plant has been in continuous operation since the 1930s

Northparkes - China Molybdenum Co
58
InLine Spinner
31
-32.8534
148.004

Northparkes - China Molybdenum Co

Parkes, NSW

Northparkes is a copper and gold mine located 27 kilometres north west of Parkes in the Central West of New South Wales, Australia. Northparkes is a joint venture between China Molybdenum Co., Ltd (CMOC) (80%) and the Sumitomo Groups (20%).

Parkes - China Molybdenum
58
InLine Spinner
31
-32.8534
148.004

Parkes - China Molybdenum

Parkes, Australia

Northparkes is a copper and gold mine located 27 kilometres north west of Parkes in the Central West of New South Wales, Australia. Northparkes is a joint venture between China Molybdenum Co., Ltd (CMOC) (80%) and the Sumitomo Groups (20%).

Weston Creek - Capital Mining Ltd
58
InLine Spinner
-35.3392
149.047

Weston Creek - Capital Mining Ltd

Weston Creek
January 2008

Not operating

Buninyong - Boral Shared Business Services
58
InLine Spinner
26
-37.6444
143.866

Buninyong - Boral Shared Business Services

Buninyong
January 2001

Boral is an international building and construction materials group, with its headquarters in Sydney, Australia. With some A$5.2 billion worth of sales, Boral had 8,953 full-time equivalent employees working across over 550 operating sites as at 30 June 2014

Greymouth - Birchfield Minerals Ltd
58
InLine Spinner
25
-42.3931
171.435

Greymouth - Birchfield Minerals Ltd

Greymouth
September 2008

Birchfield Coal Mines Limited is a privately owned family company whose directors have widely established mining interests on the West Coast. There is a strong emphasis on all mine sites to exceed environmental expectations. The Giles Creek mine began production in 1984, and has established an infrastructure to extract and process coal at a rate of 500,000 tonnes per annum.

Greymouth - Birchfield Minerals Ltd
58
InLine Spinner
25
-42.3931
171.435

Greymouth - Birchfield Minerals Ltd

Greymouth
August 2008

Birchfield Coal Mines Limited is a privately owned family company whose directors have widely established mining interests on the West Coast. There is a strong emphasis on all mine sites to exceed environmental expectations. The Giles Creek mine began production in 1984, and has established an infrastructure to extract and process coal at a rate of 500,000 tonnes per annum.

Broken Hill - Ausgold Mining Group
58
InLine Spinner
22
-31.9588
141.462

Broken Hill - Ausgold Mining Group

Broken Hill
November 2015

~~Ausgold Limited is an exploration and development company based in Perth, Western Australia and was formed to utilise some of the latest innovations in geosciences to target areas in Australia prospective for the discovery of gold and copper-gold ore bodies. This work was carried out initially by the Centre for Exploration Targeting, an internationally renowned group affiliated with the University of Western Australia and Curtin University, using a team of highly qualified geoscientists with extensive experience in gold mineralising systems and exploration targeting.

Kundana - Auriongold 2
58
InLine Spinner
22
-30.7716
121.444

Kundana - Auriongold 2

Kundana
January 2000
Alacer Gold
58
InLine Spinner
23
-28.6257
122.407

Alacer Gold

Laverton
January 1996
Agnew Gold Mining Site
58
InLine Spinner
23
-28.0023
120.5

Agnew Gold Mining Site

Leinster
January 2001
Humphreys Mining
58
InLine Spinner
22
-42.7393
171.125

Humphreys Mining

New Zealand
April 2008
EQUIPMENT

Inline Spinner
ISP30

MINERAL

Gold

SMT, ​​Red Rock​
58
InLine Spinner
23
12.866
28.1566

SMT, ​​Red Rock​

Sudan
January 2003

Red Rock Company is one of the leading companies in the field of exploration for minerals in Sudan. In 2012, the company established a special drilling department including 2 diamond core drilling machines having high specifications and great potentials reaching up to a depth of 1125 meters according to NQ standard; and reaching more than 600 meters according to HQ standard

EQUIPMENT

3 x Inline Spinner
ISP30

MINERAL

Gold

Cadia Valley - Newcrest
58
InLine Spinner
23
-33.4739
149

Cadia Valley - Newcrest

Australia
January 2001

Cadia Valley Operations is located in central-west New South Wales, approximately 25km from Orange and 250km west of Sydney. It is comprised of three mines, one open-pit and two underground, with the most recent underground mine commencing operation in January 2013.

EQUIPMENT

InLine Spinner 30

MINERALS

Gold, Copper

PRODUCTION

446,879 ounces of gold and 53,912 tonnes of copper for the 2013 financial year

Wainivesi - Asia Pacific Resources
58
InLine Spinner
23
-17.7613
178.398

Wainivesi - Asia Pacific Resources

Fiji
January 2000

The Wainivesi Mine is located in Fiji's North Tailevu Province, approximately 70km north of Suva. The mine is an open-pit operation, with an expected mine life of 5 years. It is Asia Pacific Resources' first mining project.

EQUIPMENT

InLine Spinner 02

MINERALS

Gold

Manica - Auroch Minerals
58
InLine Spinner
23
-18.9194
32.8

Manica - Auroch Minerals

Mozambique
January 2007

The Manica Project is located on the eastern limb of the Zimbabwe Craton, approximately 4km north of the town of Manica and 270km northwest of Biera. Exploration and development of the project has been ongoing since 2002.

EQUIPMENT

InLine Spinner 30

MINERALS

Gold

Kalgoorlie - KCGM
58
InLine Spinner
23
-30.7786
121.6

Kalgoorlie - KCGM

Australia
January 1998

KCGM operates at the south-east corner of the city of Kalgoorlie-Boulder, which is about 600kms east of Perth, capital city of Western Australia. Named the 'Super Pit', it is the biggest gold open pit mine in Australia. Ore delivered from the pit is processed through the Fimiston Plant and Gidji Roaster.

EQUIPMENT

InLine Spinner 02

MINERALS

Gold

PRODUCTION

800,000 ounces of gold/year

Collingwood Tin - Metals X
58
InLine Spinner
26
-15.7628
145.2

Collingwood Tin - Metals X

Australia
January 1996

The Collingwood Tin Project is located near the town of Cooktown in Far North Queensland. Metals X operated the Collingwood Tin Project until 2008 when it was placed on care and maintenance.

EQUIPMENT

InLine Spinner 02

MINERALS

Tin

Thunderbox - Norilsk Nickel
58
InLine Spinner
23
-28.3
120.9

Thunderbox - Norilsk Nickel

Australia
January 2003

The Thunderbox gold mine is located in Western Australia, 41km southeast of Leinster. Norilsk aquired the mine in June 2007 when it took over Lionore Mining. Thunderbox has been in care and maintenance since 2007.

EQUIPMENT

InLine Spinner 30

MINERALS

Gold

Mount Isa - Xstrata
58
InLine Spinner
31
-20.7291
139.4

Mount Isa - Xstrata

Australia
November 2011

Founded in 1924, the Mount Isa mines represent one of the worlds largest underground mining operations. It is split into copper and zinc-lead mining and processing streams. The copper operation includes two underground mines, a concentrator and a smelter while zinc-lead operations are comprised of an underground and two open pit mines, a concentrator and smelter.

EQUIPMENT

InLine Spinner 30

MINERALS

Copper, Zinc, Lead

Earnscleugh - L&M Group
58
InLine Spinner
23
-45.2384
169.4

Earnscleugh - L&M Group

New Zealand
January 2011

The Earnscleugh mine is located across the Clutha river from Alexandra in the Central Otago region on the South Island of New Zealand. It was the first floating plant in the world and was bought by L&M Group in 1999.

EQUIPMENT

2 x InLine Spinner 30

MINERALS

Gold

Woods Point - Morning Star
58
InLine Spinner
23
-37.5576
146.2

Woods Point - Morning Star

Australia
April 2010

The Morning Star mine at Woods Point is located in Victoria on the between Marysville and Mansfield. Morning Star is one of Australias most prodigious mines yielding 883,000 ounces of gold at an estimated grade of at least 26.5 grams per tonne. It underwent a period of redevelopment between 2007-09 and mining was recommenced in 2011.

EQUIPMENT

2 x InLine Spinner ISP02

MINERALS

Gold

Kangaroo Flat - Unity Mining
58
InLine Spinner
23
-36.799
144.3

Kangaroo Flat - Unity Mining

Australia
January 2000

The Kangaroo Flat mine is the second largest goldfield in terms of historical production in Australia after Western Australia's Golden Mile. Opened 1993. The mine has been undergoing care and maintenance since 2011.

EQUIPMENT

3 × InLine Spinner 02, 3 × InLine Spinner 30 & 1 × InLine Spinner Mini

MINERALS

Gold

Ballarat Goldfields - LionGold
58
InLine Spinner
23
-37.6917
143.926

Ballarat Goldfields - LionGold

Australia
January 2005

The Ballarat mine is located 115 kilometres northwest of Melbourne. It is Victoria's second largest goldfield, based on historical production. It represents Castlemaine Goldfield's cornerstone asset and underground mining and ore processing at Ballarat was restarted in 2011.

EQUIPMENT

3 x InLine Spinner Mini, 2 × InLine Spinner 02

MINERALS

Complex Gold

PROCESSING

263,000 tonnes per annum

PRODUCTION

71,700 ounces of gold in 2012

Beaconsfield - BCD Resources
58
InLine Spinner
23
-41.2004
146.8

Beaconsfield - BCD Resources

Australia
January 2000

The Beaconsfield mine was closed after the 2006 collapse.

EQUIPMENT

InLine Spinner 02

MINERALS

Gold

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