Tested solutions: CEMAC technologies

CEMAC technologies’ Eric Paulsen tells Waste Management Review about the company’s suite of offerings, including shredders, which support Australia’s transition to a circular economy. 

A push towards a circular economy in the face of Australia’s National Sword requires a transformation in the nation’s source separation infrastructure, including more advanced materials handling, shredders and sensor-based recycling technologies.

One technology provider is offering its 15 years of experience across resource recovery, plant engineering and equipment design to help support the transition.

In addition to its high level of engineering experience, Eric Paulsen, Director of equipment provider CEMAC technologies, says the company has partnered with leading technology vendors to offer a range of tried and tested solutions to the resource recovery market.

“All the technologies we offer are geared around reprocessing materials as opposed to landfilling. This ranges from Tomra sensor-based sorting, Weima shredding and granulating, screening and ballistic separation, right through to plastics washing and Erema repelletising,” Eric says.

Eric says the company can close the loop directly by manufacturing new products in-line, such as strapping, sheets and preforms for bottles.

“These synergies across recycling and the manufacturing process bring materials back to secondary use and occupations,” Eric says. 

He says CEMAC technologies’ focus on material resources ensures maximum value is extracted from the commodity. 

In the shredders, crushers and granulators space, CEMAC technologies touts the Weima brand as a world leader in machine manufacturing. He says Weima’s shredders handle wood, timber, plastics and paper, mixed wastes and refuse-derived fuel.

Eric says that when it comes to plastics processing, a good shredder is robust and durable and handles a range of products. The multipurpose Weima range can be tailored to shred materials from shrink wrap or hard plastics, right through to difficult mixed waste streams. “It all comes down to the design and robustness of the machine, allowing it to operate for long periods without downtime,” he says. 

Eric says investments on shredders can not be made based on equipment costs alone, as downtime and loss of production is significantly more expensive in the long term than a slightly higher investment in the machine.

He says the Weima range offers a hydraulic drive option that consumes less power than a gearbox chain without peak start-ups and slowdown, making it an economical solution in the long term. He adds that the hydraulic option can run at 100 per cent torque, which means operators don’t have to empty machines for restart.

For ease of maintenance, Weima’s shredders offer easy access from both sides of the machine for rotor blades and counter knife changes. Eric says maintenance, adjustments and changes of the knives can be made directly on the shaft, with adjustable counter knives from the outside of the machine so you don’t have to open it. “If you have contamination and/or want to get access to the shaft, it’s very easy to access the front and back end of the rotor.”