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manganese ore processing plant in australia

manganese ore processing plant in australia

Butcherbird Manganese Project, Pilbara, Western Australia

The Butcherbird Manganese projectis located in the southern Pilbara region of Western Australia, approximately 1,050km north of Perth and 130km south of Newman. The project area comprises eight known manganese deposits spread over an area of approximately 600km2. The present mine development plan is based on the Yanneri Ridge manganese deposit. The Butcherbird project is based on stratiform sedimentary manganese deposits hosted within a mostly flat lying Ilgarari Formation. Mineralisation occurs in three primary ore zones namely, the high grade manganiferous cap, the supergene enriched manganiferous laterite, and the basal shale.

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The Yanneri Ridge manganese deposit within the Butcherbird project area is estimated to hold 50.55 million tonnes of proven and probable reserves grading 10.3% manganese, and containing 5.21Mt of manganese and 4.28Mt of recoverable magnesium.

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Butcherbird will be a traditional open pit mining operation without involving drilling and blasting. It will be a simple low cost mining operation utilising the tabular geometry of the mineralisation at the Yanneri Ridge deposit. The ore extraction will be carried out with loaders in 1 2m benches, and a mobile crusher with a grizzly feeder. The overall strip ratio is estimated to be 0.35:1. Ore will be cross ripped with a bulldozer prior to mining in order to enable the loaders to operate more efficiently. Excavators will be used to load haul trucks in areas where tramming distances become excessive.

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The crushed ore material from the mine site will be transported to a rotary scrubber to remove aggregate materials from the ore. The washed ore from the scrubber will undergo screening and rapid leaching to extract approximately 95% of the manganese to produce a 90% pure manganese solution. The pregnant leach solution will be further purified and put through a crystalliser to produce high purity manganese sulphate for use in lithium ion battery cathodes. Part of the solution will also be put through an electrolysis plant to produce electrolytic manganese metal. The final manganese lump product will be trucked to the Ut Point at Port Hedland for export.

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The Butcherbird project site is accessible directly from the Great Northern Highway through a 1.3km long purpose built access road. The water required for various project operations will be sourced from bores located within the nearby tenements owned by Element 25. A paleochannel located approximately 3km southeast of the project area is being explored as a potential source of groundwater for mining and processing use. Temporary accommodation will be established in the nearby offsite area to facilitate construction works while a permanent accommodation village will be considered once the project is fully operational. The electricity requirement for the operation will be met through diesel generators.

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Peter OBryan and Associates were responsible for the open pit geotechnical review during the preliminary feasibility study for the project. Mining Solutions was responsible for project management, mine engineering, and financial modelling. IHC Robbins provided the updated mineral resource estimate for the project.

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