Tracked Self-Driven Dozer Mining Unit (TDMU)
OVERVIEW (click here for .pdf copy of this info; click here for comparison with other DMU’s and costing info)
Get your ore tested at GK’s sophisticated bulk ore screen proving facility and have a bankable pathway to a higher profit mine within weeks.
These machines have been progressively developed via a dedicated R&D program over several years, in close consultation with highly respected senior mine personnel and leading industry power-houses. “A sublime solution to problems that have beset the industry for decades” says one GM Ops. Well suited to continuous extraction of strandlines and especially helpful to chase fingers. Click here for an example of a block mine plan.
Individually driven by high torque hydraulic motors, the TDMU’s ground engaging steerable tracks ensure it can negotiate tight terrain to maximise yields from large / complex mineral resources. The rear pair of tracks are centrally mounted, articulated and steerable, with the front tracks also articulated. This ensures excellent manoeuvrability and allows the TDMU to handle relatively uneven terrain (side stairs auto-lift up to maintain 600mm chassis clearance). Being tethered at up to a 500m working radius provides the flexibility to continuously recover large blocks or narrow tracts of resource, with quick change-over times to start up the next block / section. And they can climb 20 degree slopes, to simplify pit transitions. Powered by incoming HV via auto-tensioning cable reel, with a quick-remove piggy-backed mobile genset (or fixed if preferred) for travel off-grid. All controlled from a fully insulated switch room built to cool-room spec with a mine grade air-conditioner for maximum reliability in hot climates.
A self-levelling low vibration two-mass screen (explanation at https://tinyurl.com/GK2mass), fed full width by a low profile belt-on-slat conveyor (click here for a 40 sec overview video), will permit automated dozer cab operated density controlled slurry transport over long distances. A quick-remove hopper is available for FEL or excavator use. Being relocatable in minutes, even with a full feeder, significantly increases average pushed t/m of dozer travel, resulting in much greater productivity than multi-module DMU’s can achieve, and more consistent feed for a downstream concentrator plant. No delays for a second dozer, or difficulty pushing skids over moist surfaces. Whilst a conventional open-sided 20′ shipping container trash skip easily fits under the discharge, this is not needed as pulling in to the mining position in a curved movement leaves plenty of room for the hoses, so trash is easily dozer cleared. The 300mm ID lay-flat sump overflow hose is a simple one-person task to handle, if it is even needed given the reliable autonomous level control system fitted to these machines.
Constructed from fully hot dip galvanised structural modules, shop tested major subassemblies can be transported around the globe for rapid assembly and commissioning. Local fabrication and assembly of some modules is available for suitable sites. Galvanised Victaulic pipework fittings, long life ceramic, bolted panel main feeder linings and UHMWPE chute linings, with auto-lube bearings used throughout to simplify maintenance, and stair / walkway access to all maintenance points. Comes complete with ground engaging hose termination anchor skid. Maintainability and availability are core engineering design concepts, built in from the ground up by personnel with decades of experience making operational equipment people love to own. You will too.
KEY PERFORMANCE SPECIFICATIONS
Capacity:
2,000 t/hr max / 1,700 t/hr design nominal @1.6 bulk density, 2.6 SG ; Ambient de-rating: >45o C
Annual Throughput: 14 mtpa (assuming 1 short move every 2 days, 1 dayshift maintenance a month and 5 day annual outage)
Screening: GK 2.4m x 8.5m double deck two-mass screen handles rocks to -500 mm; (Grizzly apertures 44 cm x 117 cm, screen at -3.2 mm; -2 mm option)
Laden Travel Speed (high / low): 1 km/hr (on flat) / 0.5 km/hr (on 20 deg incline / tight turning) ; Manoeuvrability: 50m turn radius; +/-5 deg articulation each track individually
Tracks: 1.2m wide x 6.9m long double grouser treads, all hydraulic motor driven ; Driving: Remote control, adjustable bias for hose towing
DN450 interchangeable 10m feed & slurry hoses: up to 2@500m (950m working range from included hose termination anchor skid)
Power supply: 22 or 33 kV x 2.5MVA dual output transformer, reeled cable fed (450m max + plugged extensions) c/w ring main isolator surge protection and lightning protection
Off-Grid Travel Power: Quick-remove free-standing rear platform with integral Atlas CEA 650kVA genset and easy-plug P3 Connector system; permanent fit option
Slurry pump: Warman 16/14 AH, with 1,000 kW 3.3 kV VSD direct drive motor
Unladen mass: 380t (excl optional 10t FEL hopper)
Avg Ground pressure: <145kPa unladen; <150kPa feed off; <185 kPa normal operation; <105 kPa max laden, sunk to chassis (easily climbs out with double grouser pads)
Noise Level: 60-65 dBA at 10m (less than 45 dBA at 100m) ; no equipment above 85 dBA at 1m in normal operation;
Feeder drive: High torque direct drive (no gearbox) Hagglunds radial piston hydraulic motor; 0.5m/s at max throughput
Feeder bed: 1,700mm wide (2m belt) x 600 mm deep (adjustable to 250 mm lower to suit weather / local ore characteristics)
Sump live volume: 20 m3; at 15 m3 working volume and 2,000 t/hr providing 23 – 34 seconds residence time for operational range of 45% to 55% w/w concentration slurries
Optional Grizzly Excavator Boom: For lump clay removal / push-through; quick-remove system
Optional FEL / Excavator Hopper: 50 m3 / 80t capacity; 10t mass, 25 mm thick UHMWPE bolted panel lining; chain slings; quick-remove system
Optional slewing radial discharge conveyor: 150t/hr; 15m radius (tbc, should trash stream require more than occasional dozer clearance)
3,500 t/hr (29mtpa) Configuration: Comprising a 900 mm feed depth to a 3.6m wide screen, 30m3 sump, 20/18 slurry pump, 1.4MW motor, DN600 hoses and longer steerable tracks
Stockpile Reclaim Dozer Trap
OVERVIEW (click here for .pdf copy of this info and GA drawings)
Modular skid mounted dozer trap module constructed to modern OHS, operational and maintenance standards, for loading yard conveyors from 2.5m RL. Very robust construction, grizzly protected, with easy access for cleaning, and simplified maintenance requirements. Adjustable bed depth to handle ore variation, automated hydraulic belt tensioning / take-up system, modular bolted UHMWPE chute panels for long life and low wall friction, optionally with ceramic linings to suit highly abrasive ores, complete with crowned pulleys, s/s primary, secondary and return scrapers, and belt splicing station, make these units very easy to live with. Using fabric belts to suit ores such as bauxite, salt and sand; well suited to use with iron ore and most heavy / lumpy / rock ores, using a steel cord belt on the conservatively sized pulleys.
The modular structure is fully hot dip galvanised and stainless steel / non-corrosive materials used for all belt contacting components. Configured with a robust headwall for dozer pushing forces, and an integral rilling-style side wing-wall, these units can easily be transported to site as ‘flat-packs’, containerised, or sent fully complete, tested and ready for operation. Quick-remove FEL hopper option available.
Available configured to be fixed to foundations, or fully portable via dozer push points / tow points and rounded infills to minimise pushing / towing forces. When used in combination with tracked portable radial stackers, they make for a very efficient stockpile configuration for rapid ship-loading and flexible storage systems.
KEY PERFORMANCE SPECIFICATIONS
Reclaimer Capacity Configurations:
KEY PERFORMANCE SPECIFICATIONS
Capacity (max/nominal): 1,100 / 950 t/hr @1.6 bulk density, 2.6 SG
Trash handling: Lumps to -300mm; (Grizzly apertures 45cm x 117cm (2.5m high entry point, 4.8m long feed zone), divergator -50mm or less, to suit resource)
Power supply: 415V plugged cable (MV / HV incoming available)
Slurry pump: 14/12, with 450kW soft start motor
Unladen mass: 93t
Ground pressure: <15kPa (unladen) ; <20kPa (laden)
Feeder drive: 75kW VSD; 0.36 m/s at max throughput (optional density control)
Belt Feeder: 1,200 mm wide PN1250 4ply belt, 20 degree inclined, 830 mm ceramic lagged head pulley, 530 mm ceramic lagged tail pulley, 1.5m face width, @16m centres
Power @ 0.9PF: 600 kVA @ 415kV supply
Sump live volume: 6 m3; at 5 m3 working volume and 1,100 t/hr providing 14 – 21 seconds residence time for operational range of 45% to 55% w/w concentration slurries
Ambient de-rating: >45o/C
Dozer Pushed Mining Unit (DMU)
OVERVIEW
A fixed (illustrated), or optionally self-levelling, low vibration two-mass screen will permit autonomous dozer cab operated density controlled slurry transport over long distances. The low feeder entry point increases average pushed t/m of dozer travel. Trash is easily cleared by a dozer, with no skips required. Powered by incoming HV via plugged cable or on-board genset.
Constructed from fully hot dip galvanised structural modules, shop tested major subassemblies can be transported around the globe for rapid assembly and commissioning. Local fabrication and assembly of some modules is available for suitable sites. Victaulic pipework fittings, long life ceramic button bolted panel chute linings and auto-lube bearings are used throughout to simplify maintenance, with step and walkway access to all maintenance points.
KEY PERFORMANCE SPECIFICATIONS
Annual Throughput: 13.5 mtpa (assuming 1 short move every 2 days, 1 dayshift maintenance a month and 5 day annual outage)
Capacity (max/nominal): 2,000 / 1,700 t/hr @1.6 bulk density, 2.6 SG (1,100 / 950 t/hr also available)
Trash handling: Calcite rocks to -500mm; (Grizzly apertures 44cm x 117cm, screen -3.2mm or less, to suit resource)
Power supply: 22 kV plugged cable OR 1 MW prime on-board genset
Slurry pump: 16/14, with 1,000 kW 3.3kV VSD direct drive motor (800 kW for genset configuration)
Unladen mass: 213t
Ground pressure: <30 kPa (unladen) ; <42 kPa (laden)
Feeder drive: 185kW VSD; 0.5m/s at max throughput
Power @ 0.9PF: 1.6 MVA @ 22 kV supply
Sump live volume: 20 m3 ; at 15 m3 working volume and 2,000 t/hr providing 23 – 34 seconds residence time for operational range of 45% to 55% w/w concentration slurries
Ambient de-rating: >45o/C
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