Sustainable assessment of nickel production residue as engineered landfill. (Old ID 27759)

Principal Investigator

The residue left after leaching is a silica-rich sand material, which will be a washed, filtered and neutralised with magnesia, before being stockpiled on site for over 36 months. Numerous options for the end use of this leach residue have been investigated and were previously reported by JCU. These included re-use as a building product in bricks and as an engineered fill. The results favoured the material as a potential fill material and since these results were published numerous potential sites requiring fill in and around the Townville region have been identified. For this to be viable the mechanical and chemical properties of the material must be further investigated. If successful, the results of this test program should indicate eligibility for an End of Waste Code (EOWC).

01 Sep 2022 - 31 Jan 2024

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