InfraBuild is already known for our extensive network of recycling centres – contributing about 1.4 million tonnes of recycled metals every year into our steel making operations.
But did you know we also reuse and repurpose by-products from our steel making?
Slag is one such material. Slag is produced when molten steel is separated from molten silicates and oxides – forming a type of artificial rock when cooled. Solidified slag, which looks and feels like rock, can be crushed and screened to various sizes – the same way natural rock is processed after being quarried to make aggregate for the construction industry.
InfraBuild produces about 130,000 tonnes of slag every year, and according to Giyas Mohammed, Manufacturing Manager at InfraBuild’s Sydney Steel Mill, InfraBuild was doing everything possible to use its slag in a safe and sustainable way so none of it goes to waste.
“We are re-using this material in a safe and sustainable way by substituting it for quarried rock and aggregate where possible,” he said.
“In addition to being used in road construction, other uses of slag are being developed, such around retaining walls and foundations.”
Slag produced by our steel making operations is crushed, screened, tested, and approved for use in various construction applications, including sealing, asphalt and filter aggregate, road pavement and road base, and engineered fill.
Prior to its reuse, the slag is subjected to various safeguards to ensure it presents no environmental risks. Originating from the well-controlled manufacturing processes of InfraBuild, slag is a very stable and inherently safe material which is viewed as a valuable resource and not as a waste material. InfraBuild maintains records to prove ongoing compliance with all regulatory requirements.
“By reusing slag in this way, we are diverting slag from landfill while producing an essential product for construction and reducing the need for mining and quarrying natural rock,” Mr Mohammed said.
In 2021, all slag produced by Infrabuild was available for reuse with none going to landfill.
InfraBuild announces Q1 FY23 results and intended strategic acquisitions
InfraBuild today announces strong financial and operational results for the first quarter of the 2023 Financial Year, and its...
Steel infinitely recyclable
Steel is a building block of society; our transport network, our hospitals, our schools, our stadiums and cinemas and...
InfraBuild giving staff the tools to speak up on mental health in the workplace
As Australian workplaces mark Safe Work Month this October, steelmaker InfraBuild is coaching its staff in ways to check...
InfraBuild announces third quarter financial results
InfraBuild announced sustainable progress across all financial metrics, delivering solid financial and operational results for Q3 of 2022
Mildura local showing her mettle
Meet Alison Bateman – our newest InfraBuild Steel Centre branch manager taking the reins at our Mildura branch.
InfraBuild announces half year financial results
InfraBuild today announced an improvement across all financial metrics, with the business delivering solid financial and operational results for...
Innovative new project to develop corrosion resistant steel fencing
This collaborative project will significantly increase the life of important fencing infrastructure across Australia
InfraBuild helps deliver forever home for Zambi baboons
InfraBuild is proud to have supported the construction of a new baboon enclosure at the Zambi Wildlife Retreat in...
Cadet program helping to build a sustainable future
InfraBuild is building a sustainable future for its workforce through a new cadet program that will share knowledge and...
InfraBuild collaboration with Deakin University
An exciting new collaboration between InfraBuild and Deakin University is advancing new technologies in Australian steel manufacturing.
Subscribe to the
Receive regular updates on news, case studies as well as the latest products and services.