Sandvik launch next-generation impactor

11 June, 2019

First published in the June 2019 issue of Quarry Management

Sandvik Mobile Crushers and Screens roll out the latest upgrade in their 2-Series product offering with the launch of the new QI442 impact crusher

Continuing their ongoing product development, Sandvik have announced the launch of the new QI442 tracked mobile impact crusher. This latest addition to the company’s 2-Series line-up features the newly developed CI621 Prisec impact crusher, which comes with various innovations for improved efficiency and greater safety during maintenance.

Like previous Sandvik Prisec impactors, the new CI621 can be configured to work as either a primary or secondary machine, whilst its two hydraulically assisted curtains can be readily adjusted to produce a wide range of high-quality product sizes.

The new CI621 includes further enhancements primarily focused on increased serviceability and safety during maintenance. These include a new rotor position and locking device, new hammer locking wedges for quicker removal and fitting, and a new wedge removal tool to provide safer installation and removal. The rotor bearings have also been upgraded for easier assembly and clearance setting, in addition to an improved sealing system and greater range of curtain adjustment. This, say Sandvik, allows greater usage of wear parts and maintains tighter settings in the secondary position.

Crushing and screening in one unit

One of the benefits incorporated into the QI442 is the optional modular hanging screen system. Recently launched on Sandvik’s mobile cone crushers, this system is detachable/ interchangeable and offers greater flexibility with the crusher able to operate in either open or closed circuit. The hanging screen’s unique design allows it to be set up in less than 30 min without the use of additional lifting equipment. The patent pending hanging screen option delivers multi-functionality as a one-, two- or three-way split screener, as well as a highly productive and efficient impact crusher.

With the double-deck hanging screen in place, the machine can produce two screened products while recirculating oversize back into the feed conveyor. The oversize conveyor can be hydraulically rotated for material stockpiling (90°) or recirculation (180°). The tail section can be raised hydraulically to give improved ground clearance for transport when loading or unloading.

My Fleet telematics

The QI442 comes with Sandvik’s My Fleet remote monitoring system as standard. My Fleet has been developed to help customers know exactly how their equipment is being utilized. Through the collection and accurate monitoring of a wide array of parameters, this facilitates accurate production forecasting, ensuring that the most efficient use is obtained from the equipment, thereby maximizing its return on investment (ROI).

The QI442 comes equipped with a range of other customer-focused features designed to further improve the ROI and experience for the operator. A pre-screen is fitted to ensure maximum scalping capability and to prevent any undersize material passing through the impactor, thereby maximizing throughput and reducing wear costs. This also allows a specific-sized product to be produced via the natural fines conveyor. The pre-screen also offers a choice of grizzly or punch-plate top deck and mesh bottom deck, providing the flexibility to cope with any application, whilst the underpan feeder significantly reduces the spillage generally associated with impact crushers.

Powered by a Cat C13 diesel emissions-compliant engine with direct-drive heavy-duty wet clutch for maximum power delivery and fuel efficiency, other key features of the QI442 that come as standard include: an overband magnet, ceramic blow bars, user-friendly PLC control system and colour screen, and remote control. For more information visit: www.rocktechnology.sandvik