Sepro Mineral Systems

Last updated
Sepro Mineral Systems Corp.
Type Privately Held Company
IndustryBasic resources, engineering
Founded1987
Headquarters Langley, British Columbia, Canada
Key people
Steve McAlister (Director), Mark Van Kleek (President and CEO)
Products Mineral Processing machinery and Process Engineering
Subsidiaries Met-Solve Laboratories Inc., iCON Gold Recovery Corp., Canamix Processing Systems, Carminex Systems
Website www.seprosystems.com

Sepro Mineral Systems Corp. is a Canadian company founded in 1987 and headquartered in British Columbia, Canada. The outcome of the acquisition of Sepro Mineral Processing International by Falcon Concentrators in 2008, [1] the company's key focus is the production of mineral processing equipment for the mining and aggregate industries. [2] Sepro Mineral Systems Corp. also provides engineering and process design services. Products sold by Sepro include grinding mills, ore scrubbers, vibrating screens, centrifugal gravity concentrators, agglomeration drums, and dense media separators. The company is also a supplier of single source modular pre-designed and custom designed plants and circuits. [3]

Contents

Today, Sepro Mineral Systems Corp. is represented by global agents in over 15 countries and has equipment operating in over 31 countries around the world. [4]

Products

Falcon Gravity Concentrators

The Falcon Concentrator is a type of gravity separation device for the recovery of valuable metals and minerals. There are three types of Falcon Concentrators: Falcon Semi-Batch (SB), Falcon Continuous (C) and Falcon Ultra-Fine (UF). [5] [6] All models of Falcon Concentrator rely on the creation of centrifugal forces by way of a rapidly rotating, vertical bowl in order to stratify and separate particles based on weight. The amount of gravitational force generated and the method of collecting these heavier particles differs for each model.

Falcon Semi-Batch

The Falcon semi batch centrifugal concentrator is primarily used for the recovery of free (liberated) precious metals such as gold, silver and platinum. The machine generates forces up to 200 times the force of gravity (200 G's) and makes use of a two-stage rotating bowl for mineral separation. The smooth-walled lower portion is for particle stratification and then a fluidized upper portion is used for the collection of the heavier particles. The machine is stopped periodically to rinse and collect the valuable concentrate from the bowl. [7] The Falcon SB concentrator is used for gold recovery at many mines around the world, including Quadra FNX Mining's Robinson mine in the United States, Newcrest's Telfer Gold Mine in Australia and the Sadiola Gold Mine (owned principally by AngloGold Ashanti and Iamgold) in Mali. [8]

Falcon Continuous

The Falcon Continuous (C) centrifugal concentrator is primarily used for the separation of heavy minerals which occur in ore concentrations above 0.1% by weight, such as cassiterite, tantalum and scheelite. [9] [10] It is also used for coal cleaning [11] and pre-concentration of gold bearing ores. [12] [13] The machine generates forces up to 300 times the force of gravity (300 G's) and operates by using a smooth-walled, rotating bowl to stratify the material into heavier and lighter fractions then uses pneumatic valves to control the amount of heavy material that reports to the concentrate collection stream. It does not use any fluidization water and relies entirely on centrifugal force for separation. [14] The Falcon C concentrator is used in various process plants around the world, such as the Tanco mine in Canada, [15] the Sekisovskoye mine in Kazakhstan [16] and the Renison tin mine in Tasmania. [17]

Falcon Ultra-Fine

The Falcon Ultra-Fine (UF) centrifugal concentrator is primarily used for the separation of heavy minerals which occur in ore concentrations above 0.1% by weight, such as cassiterite, tantalum and scheelite when the majority of the particles are smaller than 75  µm. The machine generates forces up to 600 times the force of gravity (600 G's) and uses a smooth-walled bowl for particle stratification with a pneumatically controlled rubber lip for heavy material collection. The machine is stopped periodically to rinse and collect the valuable concentrate from the bowl. [18] Studies have found that the deposition of heavy material within the bowl can be predicted by a hindered settling model. [19] The Falcon UF concentrator is used in a number of process plants around the world such as the Tanco mine in Canada [20] and the Bluestone tin mine in Tasmania. [21]

Sepro Tyre Drive Scrubbers

Scrubbers are material washers used to break down and disperse clays in order to prepare mineral ores or construction aggregates for further processing. Sepro Tyre Drive Scrubbers are manufactured up to 3.6m in diameter [22] and are capable of processing up to 1500 tonnes per hour of material. Shell supported Scrubbers such as the Sepro PTD Scrubber minimize stress on the shell by spreading the power drive over the full length of the washing drum. These scrubbers operate in many applications on feeds with high clay content, and are commonly used for difficult ore and stone washing duties. A few specified applications of Sepro Scrubbers include removal of gold “robbing” carboniferous material and other contaminants from gold ores, the processing of bauxite ores for aluminum production, the washing of laterites (gold, nickel, cobalt) to liberate fine metals for gravity recovery, and the washing of crushed aggregate, gravel and sand to remove clay contamination. [23] [24]

Sepro Tyre Drive Agglomeration Drums

Sepro Agglomeration Drums are specifically designed to prepare feeds with high fines content on Gold and Base Metal heap loading operations. [25] Processes where a Sepro Agglomeration Drum can be utilized include gold, copper, uranium and nickel laterite. The action in the agglomeration drum, combined with small additions of cement or lime, binds the fines into a "pelletised" product, which can be heaped and leached out without "pooling" and "channeling" caused by loss of heap permeability due to blinding by fines. [26] The machine uses flexible rubber liners to prevent build up without the use of lifter bars and is adjustable on a pivotable base frame. [27] Shell supported agglomerators such as the Sepro PTD Agglomeration Drum minimize stress on the shell by spreading the power drive over the full length of the unit.

Sepro Tyre Drive Grinding Mills

Sepro Tyre Driven Grinding Mills are designed for small and medium capacity grinding applications, specifically small tonnage plants, regrinding mills, reagent prep and lime slaking. Sepro Pneumatic Tyre Driven (PTD) mills provide an alternative to standard trunnion drive systems. The drive consists of multiple gears boxes and electric motors directly connected and controlled through an AC variable frequency drive. Shell supported mills such as the Sepro PTD mills minimize stress on the mill shell by spreading the power drive over the full length of the mill. Sepro Mills are suitable for ball, rod and pebble charges and are available with overflow or grate discharge [28] to suit the application. Shell supported mills such as the Sepro PTD Grinding Mills minimize stress on the shell by spreading the power drive over the full length of the unit. [29]

Condor Dense Medium Separators

The Condor Dense Medium Separator (DMS) is a multi-stage, high efficiency media separation machine for mineral processing operations at the rougher and scavenger stage. It is typically used in a pre-concentration duty prior to processing or milling to reject barren material. The unit is manufactured with either two or three stages of separation depending on the media with one or two valuable densities resulting, while the unit can produce up to four products from one dense medium vessel altogether. The Condor DMS can take a larger feed particle size compared to a DMS cyclone of the same diameter and capacity, and is capable of handling higher sinks or floats loading without affecting performance. The valuable dense material (or 'sinks') can be combined or separated at the final stage and is then pumped onto the next process in the circuit. Sepro Mineral Systems Corp. supplies customizable DMS Plants for a wide variety of application requirements. Sepro's standard two product (concentrate, tailings) DMS Plant utilizes a two-stage Condor Separator and single density medium circuit, while the three product (concentrate, middlings, tailings) DMS Plant utilizes a three-stage Condor Separator and two medium circuits at high and low density. [30]

Sepro Leach Reactors

The Sepro Leach Reactor is a high concentration leach reactor developed to treat the gold concentrate produced by the Falcon Concentrator. The unit consists of a concentrate holding tank and a leach tank and impeller which are linked by a Sepro vertical bowl pump. The SLR uses either peroxide or oxygen gas to achieve elevated levels of dissolved oxygen required to accelerate the leaching process with no reagents required. The pregnant leach solution produced can be directly electrowon. With the addition of an electrowinning unit the final product becomes a gold plated carbon that can be directly refined to produce gold bullion. Extensive test work of the SLR on site has shown over 99% of the target mineral is recovered through a simple, fully automated process that is easily incorporated into recovery operations. Sepro Mineral Systems Corp. supplies SLR units with capacities ranging from 1,000 to 50,000 kg (2,200 to 110,200 lb). [31]

Sepro Pumps

Sepro supplies horizontal slurry pumps, vertical sump pumps, vertical froth pumps, vertical tank pumps and horizontal fluid process pump models which are metal lined or rubber lined, one option being SH46® material for advanced wear resistance. [32] They are designed to operate in the mining, aggregate, chemical and industrial sectors. Applications suitable for Sepro Pumps include mill discharge, mineral concentrate, dense media, coarse / fine tailings, process water and aggregates. Sepro engineers mobile, modular and fixed mineral processing plant designs which incorporate the complete line of slurry, sump, froth, tank and fluid Sepro Pumps. [33]

Sepro Blackhawk 100 Cone Crushers

The Sepro Blackhawk 100 Cone Crusher is a modern, hydraulically operated cone crusher designed to be simple, rugged and effective for heavy duty mining and aggregate applications. The combination of the speed and eccentric throw of the crusher provides fine crushing capability and high capacity in a very compact design. The Blackhawk is capable of being applied as a secondary or tertiary crusher as well as a pebble crusher. The Blackhawk 100 is driven directly via a flexible coupling to the electric drive motor. This arrangement eliminates the need for sheaves and v-belts, allowing for simplified operation and maintenance. A variable speed drive package is included to optimize the speed of the machine to the given liner profile, feed and production conditions. [34]

Sepro-Sizetec Screens

Sepro-Sizetec Screens are used for a variety of particle size separation and dewatering duties in mineral processing and aggregate applications. In mineral processing applications, particle size separation is of utmost importance in order to optimize crushing, grinding and gravity separation as well as many other processes. In aggregate applications, proper size separation and dewatering is essential to generate a saleable product. High capacity capable and featuring interchangeable screen decks, Sepro-Sizetec Screens are used for gold ore processing, fine aggregates, industrial minerals, soil remediation and coal processing applications. [35]

Plants and process design

Sepro designs and builds modular and mobile processing plants for a wide range of mineral applications. Complete plants can be assembled using Sepro manufactured equipment along with equipment from third-party vendors and sub-contractors. [36]

Sepro Mobile Plants are designed to be easily re-locatable as they are mounted on road transportable custom built trailer assemblies. These include the Sepro Mobile Mill Plant and Sepro Mobile Flotation Plant, both of which were installed by Banks Island Gold Ltd at the company's Yellow Giant Gold Property on the coast of British Columbia. [37] They can be designed to encompass a wide variety of process options from crushing through to the final concentrate collection.

Sepro Modular and Skid Mounted Plants are engineered around structural elements that are simple and easy to erect on site. These plants can be designed with larger equipment for higher tonnage applications than that of the Sepro Mobile Plants. One example is a 360 TPD Gold Processing Plant Sepro supplied to ProEurasia LCC for the Vladimirskaya Project in Russia. This included milling, gravity and smelting circuits. [38]

Sepro also offers standard process modules which are designed around a single recovery or procession option. Dense Media Separation and Gravity Concentration are two examples of standard Sepro process modules. [39]

Related Research Articles

<span class="mw-page-title-main">Mill (grinding)</span> Device that breaks solid materials into smaller pieces by grinding, crushing, or cutting

A mill is a device, often a structure, machine or kitchen appliance, that breaks solid materials into smaller pieces by grinding, crushing, or cutting. Such comminution is an important unit operation in many processes. There are many different types of mills and many types of materials processed in them. Historically mills were powered by hand or by animals, working animal, wind (windmill) or water (watermill). In modern era, they are usually powered by electricity.

<span class="mw-page-title-main">Industrial wastewater treatment</span> Processes used for treating wastewater that is produced by industries as an undesirable by-product

Industrial wastewater treatment describes the processes used for treating wastewater that is produced by industries as an undesirable by-product. After treatment, the treated industrial wastewater may be reused or released to a sanitary sewer or to a surface water in the environment. Some industrial facilities generate wastewater that can be treated in sewage treatment plants. Most industrial processes, such as petroleum refineries, chemical and petrochemical plants have their own specialized facilities to treat their wastewaters so that the pollutant concentrations in the treated wastewater comply with the regulations regarding disposal of wastewaters into sewers or into rivers, lakes or oceans. This applies to industries that generate wastewater with high concentrations of organic matter, toxic pollutants or nutrients such as ammonia. Some industries install a pre-treatment system to remove some pollutants, and then discharge the partially treated wastewater to the municipal sewer system.

<span class="mw-page-title-main">Froth flotation</span> Process for selectively separating of hydrophobic materials from hydrophilic

Froth flotation is a process for selectively separating hydrophobic materials from hydrophilic. This is used in mineral processing, paper recycling and waste-water treatment industries. Historically this was first used in the mining industry, where it was one of the great enabling technologies of the 20th century. It has been described as "the single most important operation used for the recovery and upgrading of sulfide ores". The development of froth flotation has improved the recovery of valuable minerals, such as copper- and lead-bearing minerals. Along with mechanized mining, it has allowed the economic recovery of valuable metals from much lower-grade ore than previously.

<span class="mw-page-title-main">Mineral processing</span> Process of separating commercially valuable minerals from their ores

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<span class="mw-page-title-main">Heap leaching</span> Industrial mining process used to extract precious metals from ore

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<span class="mw-page-title-main">Dust collector</span>

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<span class="mw-page-title-main">Jameson cell</span> Machinery for processing minerals

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High-frequency vibrating screens are the most important screening machines primarily utilised in the mineral processing industry. They are used to separate feeds containing solid and crushed ores down to less than 200 μm in size, and are applicable to both perfectly wetted and dried feed. The frequency of the screen is mainly controlled by an electromagnetic vibrator which is mounted above and directly connected to the screening surface. Its high-frequency characteristics differentiate it from a normal vibrating screen. High-frequency vibrating screens usually operate at an inclined angle, traditionally varying between 0° and 25° and can go up to a maximum of 45°. They should operate with a low stroke and have a frequency ranging from 1500 to 9000 RPM. Frequency in High frequency screen can be fixed or variable. Variable High Frequency screen is more versatile to tackle varied material condition like particle size distribution, moisture and have higher efficiency due to incremental increase in frequency. G force plays important role in determining specific screening capacity of screen in terms of TPH per sqm. G force increases exponentially with frequency.

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<span class="mw-page-title-main">Arthur Wilfley</span> American mining engineer and inventor (1860–1927)

Arthur Redman Wilfley was a mining engineer and inventor who worked much of his life in Colorado, in the United States.

<span class="mw-page-title-main">Wilfley table</span>

The Wilfley Table is commonly used for the concentration of heavy minerals from the laboratory up to the industrial scale. It has a traditional shaking (oscillating) table design with a riffled deck. It is one of several brands of wet tables used for the separation and concentration of heavy ore minerals which include the Deister Table and Holman Table, all built to handle either coarse or fine feeds for mineral processing.

References

  1. ↑ "Sepro Mineral Systems Is Now Home to Falcon Concentrators". Infomine website. 2008-03-09.
  2. ↑ "About Sepro Mineral Systems Corp". www.seprosystems.com. Sepro Mineral Systems Corp.
  3. ↑ "Sepro Mineral Systems Corp". www.infomine.com. 7 September 2023.
  4. ↑ "About Sepro Mineral Systems Corp". www.seprosystems.com. Sepro Mineral Systems Corp.
  5. ↑ Armstrong, K.C., & McAlister, S.M. (1998), 'Development of the Falcon Concentrator' in Proceedings from the 1998 SME Annual Meeting, Orlando, Florida, 9–11 March 1998.
  6. ↑ Deveau, C (2006). "Improving fine particle gravity recovery through equipment behaviour modification." Proceedings of the 38th Annual Meeting of the Canadian Mineral Processors, Paper 31, 501-517
  7. ↑ Armstrong, K.C., & McAlister, S.M. (1998), 'Development of the Falcon Concentrator' in Proceedings from the 1998 SME Annual Meeting, Orlando, Florida, 9–11 March 1998.
  8. ↑ Naude, C. (2009), 'Effect of gravity recovery on overall plant recovery. Sadiola - a case study' in Proceedings from the 40th Annual Meeting of the Canadian Mineral Processors, Ottawa, Canada, 23–25 January 2009.
  9. ↑ Deveau, C. (2000). 'The evolution of falcon continuous concentrators at Tantalum Mining Corporation of Canada.' Proceedings of the 32nd Annual Canadian Mineral Processors Conference, Ottawa, Canada, Jan 2000, pp.1-18
  10. ↑ Deveau, C. and Young, S.R., (2005). "Pushing the limits of gravity separation," SME Annual Meeting, Preprint 05-84
  11. ↑ Honaker, R.Q. (1998). 'High capacity fine coal cleaning using an enhanced gravity concentrator.' Minerals Engineering, Volume 11, Issue 12, 1191-1199
  12. ↑ Naude, C. 2009, 'Effect of gravity recovery on overall plant recovery. Sadiola - a case study' in Proceedings from the 40th Annual Meeting of the Canadian Mineral Processors, Ottawa, Canada, 23–25 January 2009.
  13. ↑ Armstrong, K.C., & McAlister, S.M. (1998), 'Development of the Falcon Concentrator' in Proceedings from the 1998 SME Annual Meeting, Orlando, Florida, 9–11 March 1998.
  14. ↑ Armstrong, K.C., & McAlister, S.M. (1998), 'Development of the Falcon Concentrator' in Proceedings from the 1998 SME Annual Meeting, Orlando, Florida, 9–11 March 1998.
  15. ↑ Deveau, C. (2000). 'The evolution of falcon continuous concentrators at Tantalum Mining Corporation of Canada.' Proceedings of the 32nd Annual Canadian Mineral Processors Conference, Ottawa, Canada, Jan 2000, pp.1-18
  16. ↑ Mitchell, D. (2010). 'Advances in gold process recovery from complex ores' [Powerpoint Slides]. Retrieved from http://miningcongress.com/pdf/presentations-downloads/2010/Dean-Mitchell-METS.pdf
  17. ↑ "Annual Report 2007" (PDF). Metals X Limited. 2007-09-28.
  18. ↑ Deveau, C (2006). "Improving fine particle gravity recovery through equipment behaviour modification." Proceedings of the 38th Annual Meeting of the Canadian Mineral Processors, Paper 31, 501-517
  19. ↑ Kroll-Rabotin, J.S., Bourgeois, F., Climent, E., (2011). "Benefication of concentrated ultrafine suspensions with a Falcon UF concentrator." Proceedings of the 43rd Annual Meeting of the Canadian Mineral Processors, Paper 26, 413-431.
  20. ↑ Deveau, C (2006). "Improving fine particle gravity recovery through equipment behaviour modification." Proceedings of the 38th Annual Meeting of the Canadian Mineral Processors, Paper 31, 501-517
  21. ↑ "Circular to Shareholders" (PDF). Bluestone Tin Limited. 2006-11-14.
  22. ↑ "Sepro Tyre Drive Scrubber Specifications". www.seprosystems.com.
  23. ↑ "Sepro Tyre Drive Scrubber Applications". www.seprosystems.com.
  24. ↑ "Sepro Mineral Systems delivers a 2.4m X 4.2m-110 kW Sepro Scrubber to Lehigh Materials". www.mining.com. 15 September 2009.
  25. ↑ "Commissioning Complete for Agnico Eagle's Sepro Agglomeration Drum". www.mining.com.
  26. ↑ "Sepro Mineral Systems". www.mining-technology.com.
  27. ↑ "Sepro Tyre Drive Agglomeration Drums Specifications". www.seprosystems.com.
  28. ↑ "Sepro Mineral Systems Corp. supplies milling and gravity circuit to Hemco Nicaragua SA". www.mining.com. 27 July 2012.
  29. ↑ "Sepro Tyre Drive Grinding Mills". www.seprosystems.com.
  30. ↑ "Sepro Condor Dense Medium Separators". www.seprosystems.com.
  31. ↑ "Sepro Leach Reactors". www.seprosystems.com.
  32. ↑ "SH46 Abrasion Resistant Material". www.sepropumps.com.
  33. ↑ "Sepro Pumps". www.sepropumps.com.
  34. ↑ "Sepro Blackhawk 100 Cone Crushers". www.seprosystems.com.
  35. ↑ "Sepro-Sizetec Screen Applications". www.seprosystems.com.
  36. ↑ "Sepro Modular Process Solutions". www.seprosystems.com.
  37. ↑ Mossman, Benjamin (18 September 2014). "Banks Island Gold Ltd. Provides Update on Commissioning of Grinding and Flotation Circuits" . Retrieved 18 September 2014.
  38. ↑ "Vladimirskaya". www.proeurasia.at. Retrieved 30 October 2014.
  39. ↑ "Sepro Condor DMS". www.seprosystems.com.
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