HPC-15 Photos
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The HPC-15 is a complete and fully mobile recovery system offering unbeatable capability for recovery of gold, gemstones and other minerals.
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The mobility and capacity of the HPC-15 make the machine ideal for exploration, bulk sampling, startup and artisanal mining operations.
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A fully adjustable Feed Conveyor is integrated into the machine to ensure perfect feed rate for maximum recovery rate with high productivity.
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Robust construction, simple operation and compact design make the HPC-15 an ideal machine for remote, hard-to-reach locations.
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The HPC-15 is extremely versatile and ideally suited to exploration projects tasked with establishing the viability of a wide range of mineral recovery projects.
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The Scrubbing & Screening Trommel installed in the HPC-15 facilitates simple and effective washing and classifying of a broad range of materials.
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The trailer-mounted HPC-15 is completely mobile. The machine can easily be towed by a small pickup truck (total weight is approximately 1.8 tons).
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The integrated Feed Conveyor is key feature of the HPC-15 offering many advantages including consistent feed rate for optimal recovery and high operational efficiency.
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The Grizzly prevents larger rocks from entering the Feed Hopper. The Grizzly can be detached if required.
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Material is held in the Feed Hopper from where it is discharged onto the Feed Conveyor. The Hopper holds enough material to feed the HPC-15 without interruption whilst operators attend to other tasks.
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A Choke Plate is installed on the Feed Hopper Gate. This plate can be installed or removed to control the restriction of material feed from the Hopper onto the conveyor belt. Typically the Choke Plate is installed when feeding fine material and removed when feeding coarse material.
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Material falls from the Feed Conveyor belt into the Trommel Feed Chute where it is washed into the Trommel. Water flow into the Feed Chute is independently controlled at the Water Manifold.
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Water supply to the HPC-15 is fed into the Water Manifold. The Water Manifold allows independent control of water flow throughout the HPC-15. Extra outlet valves are included for a general purpose hose and for any auxiliary equipment that requires water.
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Material from the Feeder is washed into the high-rpm Trommel where it is thoroughly scrubbed and screened.
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The Trommel is supported on two sets of heavy-duty casters. Caster brackets are designed to allow for easy maintenance.
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The Trommel Scrubber is divided into 2 sections, each with 3 lifting paddles. Material washed into the Trommel is retained in each section to allow thorough tumbling and washing of rocks, gravel, sand and clay before screening.
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Scrubbed material passes from the Trommel Scrubber section to the Trommel Screen. Fine / undersize material falls through the screen whilst large / oversize gravel and rocks are retained and fed to the Discharge Section of the Trommel. Lifters inside the Trommel Screen and additional water sprayed into the screen ensure that all fine particles are discharged through the screen.
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The Trommel Screen is bolted into the Trommel and can be removed and replaced if required. This allows for easy installation of different screen sizes if needed.
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Oversize material is fed from the Trommel Screen to the Discharge Section where it is discharged from the machine. The water nozzle at the rear of the Trommel sprays water into the Screening Section of the Trommel to assist with the washing process. The Discharge Section is also fitted with a Nugget Trap to retain nuggets which have not passed through the Trommel Screen.
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Oversize material discharged from the Trommel falls onto the Oversize Chute. These rocks and gravel form a pile at the back of the machine which must be cleaned up as required
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Fine / undersize material washes through the Trommel Screen, falls into the Material Distribution Chute and is then washed onto the Concentrator Belt. The Chute can be adjusted to precisely control where material is discharged onto the Concentrator Belt. This allows for additional control of mineral recovery and yield in certain applications.
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The reverse spiral Concentrator Belt is a unique feature of the EXTRAC-TEC HPC Technology. The Concentrator Belt enables complete control of the fluidization of material with long retention time for unbeatable recovery of heavy particles by gravity separation (see videos for a detailed presentation ).
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Additional control of material fluidization on the Concentrator Belt is achieved through the Vibration Roller and Belt Washbar. Vibration of the Concentrator Belt assists with settling of heavy particles whilst independent control of water flow onto the Concentrator Belt ensures correct control of material fluidization (slurry / pulp density).
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The Concentrator Belt separates heavy and light particles. Heavy particles are then washed onto the Concentrate Sluice. Rotation and Inclination of the Concentrate Sluice can be adjusted for optimum recovery of heavy particles.
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The Concentrate Sluice has 4 recovery sections, each containing a Concentrate Mat, Riffles and a Riffle Lock. During periodic cleanups, Concentrate Mats are taken out of the sluice to remove heavy concentrate.
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Light particles are washed off the Concentrator Belt onto the Tail Sluice. Analysis of heavy particle recovery in the Tail Sluice is used to provide feedback on whether the machine setup is correct / optimal or not.
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Brackets are provided on top of the HPC-15 to attach the Concentrate Sluice when towing the machine.
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The Tail Sluice is stored under the Feed Conveyor when towing the HPC-15.
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A heavy-duty electric motor and gearbox drive the Concentrator Belt and Trommel.
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The drive motor and gearbox are mounted on an adjustable bracket and located behind a safety cage.
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Tensioning bolts on the Drive System mounting bracket allow for easy tension adjustment of the drive chains.
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The Feed Conveyor Drive System is mounted on the side of the conveyor. The drive chain is protected by a safety cover.
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Switches mounted on the Electrical Control box independently control the Drive Systems. The water and dust-proof control box protects electrical components housed inside.
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Electrical controllers enable precise speed control of the Feeder, Trommel and Concentrator Belt. After initial setup, the Control Box can be locked – only the On/Off switches are required for day-to-day operation.
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Heavy-duty bearings are used throughout the HPC-15. Maintenance involves regular lubrication only.
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Tracking of the Feed Conveyor belt is easily adjusted using the tensioning bolts.
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The Belt Washbar is fitted with a purge valve to allow for easy flushing of dirt from the water circuit.
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Tensioning bolts for adjustment of roller positioning and Concentrator Belt profile.
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Tensioning bolts for adjustment of roller positioning and Concentrator Belt profile.
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The 2 storage areas at the front of the HPC-15 Trailer offer room for storage and transportation of your extra equipment and supplies.
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A water pump, generator, tools, fuel and other auxiliary equipment can easily be secured and transported on the Trailer.
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The Jockey Wheel at the front of the Trailer is not only useful for hitching the HPC-15 to a vehicle – it is also used to easily adjust the inclination of the entire machine during set-up.
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The machine is fitted with 4 Landing Legs. These are locked in place once the HPC-15 is set-up so that the entire machine is stable and secure.
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The HPC-15 Trailer is fitted with and adjustable Tow Hitch bracket which allows different hitches to be used – Pintle Hitch fitting installed in this image.
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The HPC-15 Trailer is fitted with and adjustable Tow Hitch bracket which allows different hitches to be used – Ball Hitch fitting installed in this image.
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International shipping of HPC-15 machines is easy – the machine is transported in a 20′ container with plenty of room for additional equipment such as a water pump and electrical generator.
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Serial Production of HPC-15 machines at our factory in South Africa.
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Completed machines ready for shipping (middle machine with pump and generator secured on Trailer).
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EXTRAC-TEC HPC-15 – Mobile, efficient and versatile systems offering unbeatable recovery.