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Industrial ecology - Reuse of 1 million tonnes of blast furnace by-products

Posted: 5 Apr 2012

The extension of the Port Kembla Outer Harbour and the use of Blast Furnace Slag for the reclamation utilises not only current but also past waste product, reducing a 'mountain' for the first time in 20 years.

Blast Furnace Slag for Port Kembla Outer Harbour Expansion

Australian Steel Mill Services are supplying almost 1 million tonnes of uncrushed Blast Furnace Slag for Port Kembla Port Corporation’s 6 hectare Outer Harbour reclamation project. With such a huge project, deliveries were required to begin in August 2011 and all material will be in place by April 2012. Daily supply and emplacement of 5,000 tonnes requires the combined resources of ASMS, South Coast Equipment (transport) and Cleary Bros (emplacement).

To achieve the required delivery rate, ASMS are utilising a Komatsu WA600 wheel loader and CAT D9 bulldozer. SCE typically run 15 trucks on the 7km loop and Cleary Bros have a 110 tonne excavator, a CAT D10 bulldozer and a CAT 992 wheel loader, among other equipment at the reclamation site.

Prosser image

Port Kembla Port Corporation (PKPC) is developing the Outer Harbour at Port Kembla, NSW, to provide additional land and berthing facilities to cater for future trade growth. While the recent Inner Harbour development provides facilities to cater for the growth of existing trades, this new development has the potential to address the needs of new industry.

Blast Furnace Slag for this project is being supplied from Stockpile 31 - locally known by members as Mt. Prosser, being named in honour of the original sales manager of the stockpile area. At the end of the project, Stockpile 31 will be exhausted for the first time in over 20 years. At its peak, this stockpile contained almost 2 million tonnes of Blast Furnace Slag.

The sheer enormity of this development, and the amount of slag involved, could have a hugely positive impact on the future of the use of slag in concrete.

Published with permission of Australasian (Iron and Steel) Slag Association.

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