The Keestrack range of equipment for quarrying and recycling applications now includes more than 20 different models, offering production rates from 200 up to 1,200 tonnes per hour.
As well, almost all of its models are now available in diesel-electric or full-electric options.
At Hillhead 2018, Keestrack introduced the UK to its H4e mobile cone crusher.
The fully hybrid electric version of the compact plant with optional integrated pre-screen and three-deck hanging screen was displayed at Hillhead, boasting energy savings in productive secondary or tertiary crushing.
“We were really impressed by the large international attendance at this year’s show,” says Michael Brookshaw, Keestrack’s global distributor manager.
“We met numerous expert visitors from all over Europe and our overseas market regions as both Americas and Asia.”
Still unique to the market with its optional 3-deck hanging screen, the fully equipped plant weighs 46 tonnes, or 35 tonnes without options, offering easy one-piece road transport and fast relocation on site.
For flexible autonomous operation, the Keestrack H4e is equipped with an on-board 462 hp diesel engine. The engine drives a 330 kVa alternator, providing power to the 132-kilowatt electric motor of the crusher drive and to the separate 45-kW E-motor/pump unit for all hydraulic drives on the plant, including tracks, fans, screens and hydraulic cylinders.
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Without starting the diesel engine, this setup enables the plant to operate fully “plug-in” from mains or external gen set, resulting in energy cost savings up to 70 per cent, compared to conventional diesel-hydraulic plants.
As an option, the H4e diesel/alternator combination is available as detachable drop-off unit.
Remotely positioned during operation, this reduces dust and vibration loads for the drive unit.
The Keestrack H4e features the KT-H4 cone crusher, adapted and supplied by a world-leading cone specialist.
The fully automated unit produces up to 250 tonnes per hour at maximum feed sizes of 185 mm.
The wide variety of concaves allows flexibility in secondary or tertiary production of highly defined end fractions. To optimize production, the plant may be equipped with a pre-screen with fines chute and with a three-deck secondary screen module with recycling conveyor for closed-circuit processing.
The large dimensioning of the hanging screen, with an area of 3 x 5.4 square metres, and large stockpiling capacities of the conveyors, prevent bottle-neck effects in producing up to four highly defined quality end fractions.