Orway Mineral Consultants Crushing, Grinding and Hydrometallurgy Specialists

Orway Mineral Consultants (OMC) specialise in all aspects of crushing and grinding modelling, site circuit optimisation, and provide hydrometallurgical expertise. The Australia and Canada-based consultancy is a world leader in comminution, providing a range of services to the mineral processing community. With a primary focus on grinding applications, OMC was instrumental in the wide acceptance of SAG milling in the mining industry.

Comminution

OMC provides crushing and grinding circuit selections and major equipment sizing services for both greenfield and expansion projects. By interpreting rock breakage comminution testwork data and modelling, OMC can determine the most efficient crushing and grinding circuit configuration for all ore types:

  • Autogenous/semi-autogenous milling
  • SAG and ball milling, recycle crushing
  • Secondary/tertiary crushing ball milling
  • HPGR ball milling
  • Fine grinding
  • Rod milling
  • Scrubbing

Work is undertaken as part of engineering scoping/pre-feasibility, definitive feasibility studies or detailed design which includes:

  • Metallurgical test work specification and supervision
  • Comminution circuit modelling and major equipment selection
  • Flow sheet selection
  • Piping and instrument diagrams
  • Mass balances
  • Operating costs
  • Process design criteria
  • Process and engineering design for new and upgrade projects
  • Studies and independent reviews

OMC provide exclusive mill sizing services to Outotec.

Grinding circuit optimisations

OMC undertake many grinding circuit optimisations worldwide, providing clients with significant cost savings and increased production levels often requiring no capital input.

Comminution circuit optimisations typically involve circuit audits and collection of circuit data. This includes major equipment sizes and operating conditions. Mass flows, particle size distributions and densities for each stream are collected along with samples for ore characterisation testwork.

Considerable improvements in plant performance are often obtained through recommended changes to control philosophies and training based on preliminary audit results.

Survey data is model fitted using a combination of OMC power based and JKSimMet modelling techniques. Simulations are undertaken to assess influences of varying process parameters on circuit performance. Recommendations are made based upon analysis of data and specific problem areas are identified. These typically include changes to:

  • Mill feed size
  • Control strategy
  • Pulp density
  • Recycle crushing
  • Cyclone configuration and operation
  • Throughput
  • Ball load levels
  • Liner and grate design
  • Circulating load control

Expertise is provided across a wide range of commodities including gold, copper, nickel, iron ore, uranium, manganese, lead/zinc and mineral sands.

Hydrometallurgy services

OMC has fostered a highly skilled team specialising in the field of hydrometallurgy. OMC understand issues in complex hydrometallurgical processing with expertise in a wide range of commodities including: uranium, nickel, copper, cobalt, platinum group metals, gold and safe disposal of metalloids that co-exist.

Services include:

  • Sample selection
  • Testwork specification and pilot plant supervision
  • Modelling and mass balancing
  • Studies and design
  • Audits/due diligence
  • Client/owners team support
  • Commissioning

Nickel / Cobalt – OMC has experience in leaching nickel and cobalt from both lateritic and sulphide deposits via atmospheric, pressure oxidation or metathesis process. Leach products can be taken through purification using solvent extraction, precipitation or ion exchange process to crude and pure semi-products, or refined to metals (divided cells for example).

Copper – OMC has experience in leaching copper from low and high grade oxide deposits via heap leaching and tank leaching, sulphide concentrate leaching via low and high temperature pressure oxidation process as well as SXEW or direct EW. OMC are involved in producing super concentrates via concomitant removal of uranium, cobalt, arsenic and other deleterious elements from copper sulphide concentrates.

Platinum Group Metals (PGM) – OMC has design and operating experience in refining, to 4N purity, of platinum group metals and gold. Feed sources are typically concentrates from mattes and secondary feed stocks (e.g. spent autocatalysts).

Processes include classical chloride systems and newer technologies incorporating substituted quaternary ammonia salts (SQAS).
OMC can design to NIOSH/ACGIH air quality standards.

Uranium – Design and operating experience with calcrete, sandstone, granitic and sulphide hosted deposits across the globe. We routinely scope and supervise testwork programs, as well as pilot plant trials, using acid or alkali leaching methods followed by solvent extraction or ion exchange concentration.

OMC assists the International Atomic Energy Agency (IAEA).

General metallurgical services

Flotation

OMC has expertise in base metal and refractory gold ore flotation. Techniques include bulk, differential and collective/selective methods at laboratory, pilot plant and conventional full scale.

Gold metallurgy

OMC has strong gold processing expertise and can provide assistance in all aspects of gold processing including:

  • Testwork sample selection representivity and variability
  • Specification/supervision of testwork programs to determine optimal extraction conditions
  • Gravity gold extraction, intensive cyanidation leaching or gravity finish
  • Leach/adsorption circuit specification and operation
  • Refractory gold processing
  • Desorption circuit specification and operation
  • Goldroom operations and smelting
  • Auditing, operations reviews
  • Cyanide destruction

For more information, please contact OMC.

Make an enquiry

Press Release

New JV Orway IQ Drives Innovation with Remote Optimisation Consulting for the Global Mining Industry

Orway Mineral Consultants (W.A) Pty Ltd and Process IQ Pty Ltd announced they have formed an incorporated JV, Orway IQ Pty Ltd, to deliver a remote optimisation consulting service.

White Papers

Mount Carlton Comminution Circuit Design, Start-Up and Optimisation

The Mount Carlton project in Queensland's North East sits on a high-sulphidation epithermal style deposit rich in gold, copper, and silver.

Address
Orway Mineral Consultants (WA) Pty Ltd

Level 4, 1 Adelaide Terrace

East Perth

WA 6004

Australia

+61 8 6210 5601 +61 8 6210 5555 www.orway.com.au

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15 September 2010

Marampa Haematite Iron Ore Mine



The Marampa mine is a brownfield haematite iron ore mine located approximately 150km north-east of Freetown in Sierra

11 August 2010

Fimiston Open Pit “Super Pit” Gold Mine



The Fimiston open pit mine, also known as Super Pit and Golden Mile, is the largest open pit gold mine in Australia, me

9 June 2010

Sukari Gold Mine



The Sukari gold project is located in the eastern desert of Egypt, approximately 23km south-west of Marsa Alam, a coa

27 May 2010

Lac Des Iles Mine



The Lac Des Illes mine is an open pit and underground operation located 85km from Thunder Bay in Ontario, Canada. The mi

25 May 2010

Ranger Uranium Mine



The Ranger Uranium mine is located in Australia's Northern Territory, approximately 260km east of Darwin. Bordered by t

27 April 2010

Nokomis Mining Deposit, Minnesota



The Nokomis deposit is located south east of the town Ely in Minnesota, USA, on the western section of the Nokomis prope

29 March 2010

Challenger Gold Mine



The Challenger gold mine is located in South Australia, approximately 740km north-west of Adelaide, and is owned and ope

25 February 2010

Nullagine Iron Ore Project



The Nullagine iron ore deposit is an extensive mining licence portfolio located 140km north of Newman in the Pilbara reg

22 February 2010

Southern Ashanti Mine Gold Project, Ghana



The Southern Ashanti Gold Project (SAGP) is located 280km west of Accra, the capital city of Ghana, Africa. The project

29 November 2009

Freda Rebecca Gold Mine



Freda Rebecca gold mine, located 90km northeast of Harare in Zimbabwe, has proven reserves of 2.4 million tons (mt). The mine was closed in March 2007 for refurbishment.

23 November 2009

Atlas Wodgina Project



The Wodgina direct shipping ore (DSO) project is located 100km south of Port Hedland in the Pilbara region of Western Au

28 September 2009

Copper Mountain Project



The Copper Mountain project is situated 15km south-west of Princeton, British Columbia, Canada. It covers around 18,000

Kittila Gold Mine



The Kittila gold mine is located 900km to the north of Helsinki, Finland, at the Suurikuusikko gold deposit.

9 September 2009

Solwara Project



The Solwara 1 project is located in the territorial waters of Papua New Guinea (PNG). Nautilus Minerals Niugini, a subsi

26 July 2009

Forrestania Nickel Project



The Forrestania Nickel Project is located 400km east of Perth, in Western Australia. Flying Fox is the first mine to be developed at the project.

11 May 2009

Peak Hill Gold Mine



The Peak Hill Gold Mine, located 400km north-west of Sydney, was decommissioned in 2006. The mine occupied about 130ha o

28 April 2009

Kalgold Gold Mine



Kalgold mine is an open pit operation owned by South
Africa-based Harmony Gold Mining Company Limited. Located 60km
so

30 March 2009

Spence Copper Cathode Mine, Atacama Desert, Chile



BHP Billiton's Spence copper cathode project is located 1,700m above sea level in the Atacama Desert in northern Chile,

15 March 2009

Geita Open Pit Gold Mine, Mwanza, Tanzania



The Geita open pit gold mine is 80km south-west of the town of Mwanza in the north-west of Tanzania and is 100% owne

25 February 2009

Mt Muro Gold Deposit, Kalimantan, Indonesia



The Mt Muro Gold deposit is located in Indonesia's Central Kalimantan (Borneo) less than 100km south of the equator.

24 February 2009

Tritton Copper Mine, New South Wales, Australia



The Tritton copper mine is located near the town of Nyngan in central New South Wales, Australia, and is owned by Strait

8 February 2009

Boddington Gold Mine (BGM), Western Australia (WA)



Boddington Gold Mine (BGM) is located about 130km south-east of Perth in Western Australia. The largest gold mine in the country, it is poised to become the highest producing mine once production ramps up over the next few years.

30 November 2008

Cripple Creek and Victor Gold Mine, Colorado Springs



The Cripple Creek and Victor gold mine (CC&V) lies southwest of Colorado Springs in the US state of Colorado. For many y

27 November 2008

Sunrise Dam Gold Mine, Lake Carey, Western Australia



The Sunrise Dam gold mine lies on the eastern shore of Lake Carey in the northern goldfields of Western Australia, some

26 November 2008

Worsley Alumina Refinery – Australia



The Worsley Alumina Refinery is named after the historic timber settlement of Worsley, near Collie in the south west cor

5 November 2008

Siguiri Gold Mine, Republic of Guinea, West Africa



The Siguiri gold mine is found within the Siguiri District in the north-east of the Republic of Guinea, West Africa, abo

Platinum Australia Smokey Hills



The Smokey Hills Project is located on the eastern limb of the Bushveld Igneous Complex (BIC) in the Limpopo Province, 3

6 October 2008

Northparkes Copper and Gold Mine – Australia



Northparkes Mines is a copper-gold mine near the remote Australian town of Goonumbla, about 27km north-north-west of Par

27 August 2008

BHP Ravensthorpe Nickel Operation, Australia



The Ravensthorpe Nickel Operation (Australia) was sold by BHP Billiton to First Quantum Minerals Australia on 9 December

13 August 2008

Ridgeway Gold and Copper Mine, New South Wales



The Ridgeway underground mine cave is located in the mineral-rich Cadia Valley province in central New South Wales. A go

Ovoot Tolgoi Coal Mine



The Ovoot Tolgoi mine is in the southwest corner of the Omnigovi Aimag (South Gobi province), within the Gurvantes Soum

13 July 2008

Sabodala Gold Project



Sabodala is located in Senegal, some 650km east of the capital Dakar. The project contains two deposits – Sabodala

San Bartolomé Silver Mine, Potosi



The San Bartolomé silver mine project is located just south of the city of Potosi, southern Bolivia, in the Cordill

24 June 2008

Martabe, North Sumatra



The Martabe Project is located on the western side of Sumatra Island in the North Sumatra province in the sub-district o

24 April 2008

Orezone/IAMGOLD Essakane Gold Mine



The government of Burkina Faso has passed a law that grants Canadian company Orezone Resources Inc's subsidiary Essakane

15 April 2008

Skorpion Zinc Mine



Inaugurated in September 2003, the Skorpion zinc operation in south-west Namibia comprises an open pit mine, mill and a

7 July 2006

Batu Hijau Copper-Gold Mine



Batu Hijau copper-gold mine is located on the Indonesian island of Sumbawa in the province of West Nusa Tenggara, 1,530k

5 October 2004

McArthur River Mine



In 1955, MIM discovered the Here's Your Chance (HYC) zinc-lead-silver deposit on the McArthur River Station, 900km south

26 November 2003

Mount Isa Lead, Zinc and Silver Mine



A 1923 silver-lead ore discovery in Queensland, Australia, lead to the formation of Mount Isa Mines and the development

Mount Isa Copper Mine



Mount Isa Mines (Xstrata 100%) operates two separate mining and processing streams, copper and zinc-lead-silver. Mount I

SNIM Open Pit Iron Ore Mining – Mauritania



Miferma (Mines de Fer de Mauritanie) was created in 1952 to exploit iron ore deposits in the Kedia d'Idjil area of north

22 November 2000

Gold Fields Ltd Gold Mine – Driefontein – South Africa



Driefontein is located in South Africa’s West Wits Line goldfield, about 60km south west of Johannesburg. Driefontein Co

12 June 2000

Gold Fields Ltd Gold Mine – Kloof – South Africa



The Kloof gold mine lies approximately 60km south west of Johannesburg and 20km from Carletonville, on the border of Gau

Boliden Zinc, Copper, Gold and Silver Mine



The Myra Falls mines are located in the Strathcona provincial park in the Myra Valley on Vancouver Island, British Colum

Placer Dome Gold Mine – Musselwhite – North West Ontario



Located 500km north of Thunder Bay in northwestern Ontario, Musselwhite was brought on stream in 1997 by a joint venture

3 April 2000

Stillwater Mining Company Platinum and Palladium Mine



The Stillwater platinum / palladium mine is in the Beartooth Mountains, 130km southwest of Billings, Montana, USA. It is

Boliden Copper Mine, Aitik, Sweden



Aitik copper mine is one of four mines owned by Boliden. Located near Gallivare, northern Sweden, the low-grade Aitik co

27 March 2000

Boliden Mining Company Gold Mines



In 1924, the Holmtjarn gold deposit was discovered at Boliden, near Skelleftea in northern Sweden. Soon after, the Bolid

Lihir Gold Mine, Lihir Island, Papua New Guinea



The Lihir gold mine is on the island of Lihir, in Papua New Guinea's (PNG) New Ireland Province, about 700km north east

Anaconda Nickel Ltd Nickel and Cobalt Mine



The Murrin Murrin nickel-cobalt project, 60km east of Leonora, was commissioned by Anaconda Nickel Ltd. The project is n

26 March 2000

Placer Dome Copper-Gold Mine – Osborne – Queensland Australia



The Osborne copper-gold mine is located 195km south east of Mount Isa in Queensland, Australia. Run as a fly-in, fly-out

Outokumpu Lead and Zinc Mine – Tara – Eire



Tara lead and zinc mine is located at Navan, County Meath, approximately 50km northwest of Dublin. The mine opened in 19

Gold Mine – Zarafshan-Newmont – Uzbekistan



Newmont Mining's announcement in July 2007 of an agreement which was to see it receive US$80m from the government of

North Ltd Zinc, Lead and Silver Mine



Exploiting a zinc-lead-silver orebody near Åkersund on Sweden's Lake Vättern, Zinkgruvan started underground

Potash Corporation of Saskatchewan Phosphate Mine



The Aurora phosphate operation is located at Lee Creek in Beaufort County, North Carolina, USA. The largest integrated p

22 March 2000

Cannington Silver and Lead Mine, Queensland



The Cannington silver mine is located in north-west Queensland, 200km south east of Mount Isa, near the township of McKi

Ngezi Platinum Group Metals Mine, Zimbabwe



Located about 150km southwest of Harare, Ngezi is Zimbabwe's principal platinum-group metals producer. Operated by Makwi

21 March 2000

Gold Mine – Kanowna Belle – Western Australia



Kanowna Belle gold mine is located some 20km north east of Kalgoorlie. Delta Gold NL and Geopeko Gold discovered the ore

Press Release

23 May 2019

Orway Mineral Consultants (W.A) Pty Ltd and Process IQ Pty Ltd announced they have formed an incorporated JV, Orway IQ Pty Ltd, to deliver a remote optimisation consulting service.

Read more

Regional Offices

Orway Mineral Consultants (WA) Pty Ltd

Level 4, 1 Adelaide Terrace

East Perth

WA 6004

Australia

+61 8 6210 5601 +61 8 6210 5555 www.orway.com.au
Orway Mineral Consultants (Canada)

302 -5060 Spectrum Way

Mississauga

ON L4W 5N5

Canada

+61 8 6210 5601 +61 8 6210 5555 www.orway.com.au
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