Sifting rubble: GCM Enviro

As Queensland’s infrastructure pipeline accelerates, Jim Murphy, Lantrak Waste Division Manager, speaks with Waste Management Review about the efficiency effects of heavy-duty separation.

Workers on Queensland’s Gateway Upgrade laid tools down in March 2019, after 15 years and a $1.1 billion spend.

Designed to unlock economic growth through congestion busting, the project saw the motorway jump from four lanes to six.

To manage material movement, the Queensland Government engaged earthmoving and plant hire specialists Lantrak to move and process clean fill.

Annually moving over 10 million cubic metres of clean and structural fill, the Gateway Upgrade isn’t Lantrak’s only landmark construction project venture, having worked on the Snowy Mountains Scheme and the Wonthaggi Desalination Pipeline.

In addition to its earthmoving service, Lantrak operates a waste and recycling facility in Swanbank, Queensland. The facility is licenced to accept C&D, clean fill and low contaminated soil.

Jim Murphy, Lantrak Waste Division Manager, says the facility prioritises investment in high-quality and heavy-duty processing equipment. He adds that this was the key driver behind Lantrak’s recent Terra Select W 80 Windsifter acquisition.

“We needed a new piece of equipment to separate construction and demolition waste after it had been screened and crushed, so we engaged equipment distributor GCM Enviro,” he says.

“As Australia’s exclusive distributor of Terra Select equipment, GCM Enviro was the obvious the choice on the parameters required.”   

The Terra Select W 80 Windsifter is designed to separate heavy from light materials, such as stone from wood or concrete and bricks from timber. It also removes other light materials such as plastic or paper. Jim says the machine’s efficient ability to separate impurities from useable material flows has streamlined Swanbank’s operations.

The Windsifter is equipped with a high continuously adjustable cleaning level, at throughput rates up to 120 cubic metres an hour in certain streams.

“The machine has a unique hopper with dosing roller, which provides closed operations independent of the screening process. This ensures an even infeed of material into the machine,” Jim says.

Material is fed via an upstream feeding conveyor, with equalisation and distribution conducted via a proportioning drum and downstream acceleration belt. A compressed air nozzle then blows under the material, holding light impurities in the air.

“At the end of the acceleration belt the material is blown over the separation gap, before moving to the separation drum,” Jim says.

“The machine is also very flexible, with the ability to fine tune configurations via taps ducts and separate on heavy and light settings.”

According to Jim, the separator hasn’t disappointed, with minimal downtime or blockages. He adds that through constant dialogue between manufacturers and clients, GCM Enviro is able to ensure reliable customer-orientated servicing support.

“If our material intake grows like I think it will, I look forward to maintaining a long-term partnership with GCM Enviro.”

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Screening for all occasions: GCM Enviro

Terra Select trommel screens aim to tackle often challenging materials with ease, including wet compost and hard waste such as plastics and foams.

Whether it’s the Terra Select T 30 for small composting sites or the T 60 for high throughput performance, Australian distributor GCM Enviro offers a machine for all occasions.

Popular among smaller composting sites, the T 30 offers flexibility, good accessibility and low operating costs. Service tasks and trommel changes can be performed easily and reliably.

Those after a powerful machine with compact dimensions can look no further than the T 40, with all the technological advantages of the “big machines” transferred into the compact class.

With a screening performance of up to 200 square metres per hour, the Terra Select T 60 is equipped with a 2200 millimetre trommel drum. The high-performance 81-kilowatt motor allows sufficient reserves for star screening decks or windsifter attachments.

The most powerful mobile machine in the Terra Select product range is the T 70, with an ability to handle hard-to-screen materials such as wet compost. The long trommel and its correspondingly wide screening deck is suited to screening all kinds of waste.

Screening two fine screenings in one step is a standout feature of the DT 60. The double trommel screening machines perform a “coarse fine separation” to separate course fractions in the initial screening stages.

GCM Enviro is the sole distributor of Terra Select machinery in Australia.

Terra Select W80 Windsifter

Terra Select brings the latest in separation technology with its W80 Windsifter. The W80 is capable of separating some of the heaviest materials in a variety of applications, from biomass production to waste and recycling. It allows for the separation of stones from timber, fibro from timber/bricks in construction and demolition waste and plastics or paper contaminants from valuable recoverable materials.

This German engineered and built windsifter has a European 81kW drive, with Tier 4 fuel efficiency and a 45kW pressure fan. It is equipped with a metering roller for even continuous infeed of materials, coupled with a positive-fitting drive system. The W80 windsifter offers the ability to fine tune its configuration via taps and ducts and to optimise clean fractions. An optional light fraction discharge conveyor belt is also available.

With variable setting options, the Terra Select W80 windsifter can be used for heavy as well as lighter separating functions and has a production rate of up to 120 m3 per hour. This windsifter has an ample 5.5 m3 of feed hopper capacity and a 3700mm hopper width for easy loading. It weighs in at 15,400kg.

GCM Enviro is the exclusive distributor for Terra Select Windsifters and Trommel Screens in Australia.