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Keestrack is introducing a comprehensive range of large tracked mobile machines to the Chinese market. These encompass all relevant screening and crushing technologies for quarrying, recycling and aggregates industry sectors.
Four important new models are being unveiled. The B4 jaw crusher ensures less wear and better crushing capacities due to its double-deck vibrating pre-screen (2300 x 1000mm). The proven 1100 x 700mm jaw crusher (maximum feed size 600mm) reaches an hourly output up to 400tonnes and provides a hydraulic automatic gap adjustment to prevent clogging and automatically adjusts the jaw plates to compensate wear. For optimised maintenance, the B4 has a hydraulic sliding frame for service access under the feeder and scalping unit. Optionally, the plant can be equipped with a single-deck post screening unit.
The track-mounted jaw crusher is also available as hybrid plug-in B4e version with drop off power-supply module. The hybrid version of the successful 50tonne model B4 enables plug-in operations from the mains and is an economical alternative for semi-stationary deployment at recycling companies, large construction sites or quarries.
The fully hybrid H4e cone crusher is said to combine mobility with high productivity. Available with its novel optional triple-deck hanging screen, the fully equipped plant weighs only 46tonnes (without options: 35tonnes), offering one-piece road transport and fast relocation on site.
For versatile autonomous operation, the H4e is equipped with an onboard diesel engine. The engine drives an alternator, providing power to the electric motor of the crusher drive and to the separate E-motor/pump unit for all hydraulic drives on the plant (tracks/fans/screens/hydraulic cylinders). Without starting the diesel, this setup enables the plant to operate fully plugged-in from the mains or an external generator, offering energy cost savings of up to 70% compared to conventional diesel-hydraulic plants. The H4e has a detachable drop-off unit and can be placed remotely during operation: this reduces dust and vibration on the drive unit and facilitates easy maintenance.
The fully automated unit produces up to 250tonnes/hour at maximum feed sizes of 185mm. The wide variety of concaves allows a high flexibility in secondary or tertiary production of highly defined end fractions. To optimise production the plant can be optionally equipped with a pre-screen with fines chute and with a highly efficient three-deck secondary screen module with recycling conveyor for closed-circuit processing. The large measurements of the hanging screen (effective area: 3 x 5.4m²) and large stockpiling capacities of the conveyors prevent bottle-necks in producing up to four highly defined quality end products.
The fully equipped tracked R6 mobile impact crusher has an independent dual-deck pre-screen (3100 x 1250 mm), a double-deck post-screen module (4500 x 1500mm) and offers recirculation of the oversized fraction. Weighing just over 61tonnes, the machine has an efficient 1300-series crusher (inlet size: 1300 x 970mm, rotor weight: 6.1tonnes), and a capacity of up to 500tonnes/hour. The track mobile impactor can be transported as one-piece without disassembling the after-screen module. This improves mobility, shortens downtime and boosts profitability according to the firm. The R6 impactor is said to provide a high reduction ratio with excellent product shape. Just like all other Keestrack diesel/hydraulic driven equipment the R6 is using a load sensing hydraulic system which reduces the fuel usage by 25%, compared to traditional diesel/hydraulic equipment.
With an extensive option list the crusher can be configured to specific needs and applications. The Keestrack R6 is also available in a hybrid R6e version with full-electric rotor drive or direct rotor-by-diesel drive configuration.
The K6 scalper is a well-proven model and its first variant was introduced in 1996 as the first direct feed scalper on the market. The machine has since been updated with new technology. With its standard heavy-duty plate apron feeder and double deck screen of 4500 x 1800mm it has a capacity up to 600tonnes/hour. The low emission engine and load sensing hydraulic system ensure the lowest fuel consumption in the industry. The Keestrack K6 is also available now with an energy saving hybrid plug-in electric drive.
The Belgium-based specialist for mobile mineral processing plants has had its own subsidiary in China, Keestrack Construction Equipment, since 2007. Keestrack China covers the Chinese and South-Asian markets with a modern production facility located in Chuzhou and has a fast-growing aftersales organisation.
Opened in 2012, the current 14,000m²-facility of Keestrack China in Chuzhou – 350km north-west of Shanghai – accommodates plant production and assembly, a large parts centre and a training centre for customers. The production programme includes models of Keestrack’s classifiers and impactors and will be soon extended to the company’s scalper range. Supplying the Chinese and South-Asian market regions, Chuzhou is fully integrated in Keestrack’s worldwide research and development and manufacturing network. Continuous investment in the group’s production facilities, such as the anti-corrosive zinc-phosphate Nano powder painting technology, helps optimise machine working life.
The firm says that it provides a comprehensive product range of highly mobile tracked crushing and screening solutions with transport weights from 14-70tonnes, with 24 models in seven product lines. The company offers diesel-electric and full-electric drive options for all applications. Today 80% of the company’s product range is optionally available as diesel-electric hybrids and 75% as plug-in hybrid. According to Keestrack, these alternative drives result in energy cost savings up to 80% and noise emissions to drop by 30% at plug-in mode with the whole plant supplied through the mains. In 2012, the Chinese factory produced the first hybrid, diesel/electric classifier, the Keestrack C6e, especially for the Chinese market.
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