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[General] Mobile screening giant hits New Zealand – NZ Quarrying & Mining Editorial

Valid: 19/02/2007, Demotes: 31/12/2007

[General] Home grown from humble beginnings – NZ Quarrying & Mining Editorial

Valid: 19/02/2007, Demotes: 31/12/2007

[Latest] Ripper Award – 2006 Energywise Renewable Energy Award

Valid: 24/10/2006

[Expired] PLANT FOR TENDER – Items offered for Tender as surplus to owner’s requirements

Valid: 12/06/2006

[Expired] PLANT FOR TENDER

Valid: 12/06/2006, Demotes: 04/07/2006

[Latest] Infracon Editorial – Infracon Powers Up With Mobile Processing Capability

Valid: 02/05/2006

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Mobile screening giant hits New Zealand

NZ Quarrying & Mining Editorial

The biggest three-decked mobile screening unit ever to come to New Zealand is now in operation at Winstones Flat-Top quarry in Auckland.

The tracked Powerscreen Chieftain 2400 was purchased by Winstone's to boost productivity and was commissioned at the quarry in July. With a total weight of 42-tonnes, the three-decked, 174hp diesel hydraulic powerplant has plenty of clout. The machine has a high hourly tonnage potential of up to 750 tonnes per hour.

Christchurch supplier Screening and Crushing Sales believes the Powerscreen is ideal for conditions found in New Zealand. "Quarry sites in New Zealand are smaller and more compact compared to other countries," says SCS managing director, Brian Court. "With this type of machine you have the power as well as the versatility to operate efficientlyand effectively in a range of different operational environments."

Winstones Flat-Top quarry manager Chris Gray says moving from a static to a mobile system has had immediate benefits for the operation. "We are a small site so we need to make efficient use of our space. Now we are able to move our processing plant directly to the blast pile.

This has freed up previously sterilised resource removed to need to cart the blasted rock with dump trucks. This has created more efficient use of time and space and has reduced production costs.

"We modified the machine a little and have had very few teething troubles or down time despite the changes. Overall, the installation went extremely well and the support and service from SCS has been excellent.

"On a good day our old static plant would produce up to 400 tonnes per hour. The new Powerscreen 2400 unit is currently producing around 500 tonnes per hour, with plenty of spare capacity.

"The greater versatility of the Powerscreen means we can produce more products for the market. We currently produce GAP 25, GAP40, GAP65, GAP100 and GAP150. We are also producing Drainage 65mm and 40mm, plus HF65-150. Any oversize material can be re-crushed via the recirculation belt.

"The screens are easy to change, which makes it easy to modify or change the product we are producing. We are looking to expand our product range further with the different types of screen cloths available for this machine."

The PowerScreen 2400 features heavy-duty low ground pressure crawler tracks; a removable heavy-duty pendant remote control system and high performance hydraulics –cast iron pumps and motors c/w hydraulic oil cooler. The machine has a quick set-up time of less than 15 minutes, aided by a hydraulic folding mechanism for transport.

The screen is a 20'x 6' triple deck, two-bearing unit with an adjustable screen angle of 16° to 20°.