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    Zijin Mining–Weir HPGR move at Akyem: comminution design notes for gold plant engineers

    September 8, 2026|

    Reviewed by Tom Sullivan

    Zijin Mining–Weir HPGR move at Akyem: comminution design notes for gold plant engineers

    First reported on International Mining – News

    30 Second Briefing

    Weir has secured an order to supply two ENDURON® high-pressure grinding rolls (HPGRs) to Zijin Mining’s Golden Ridge operation at the Akyem gold mine in Ghana, as part of a brownfield optimisation of the existing comminution circuit. The HPGRs will be integrated into a flowsheet currently based on a conventional SAG and ball mill configuration that is struggling with higher ore competency. The move signals a shift towards more energy-efficient, dry grinding technology to debottleneck throughput and cut operating costs in a mature West African gold plant.

    Technical Brief

    • Increased ore competency at Golden Ridge implies higher Bond work index, driving the need for higher-pressure comminution.
    • Wear-part strategy for the ENDURON® units becomes critical, with liner change intervals affecting plant availability.

    Our Take

    Several recent Weir pieces in our coverage highlight the NEXT Intelligent Solutions platform and upgraded WARMAN mill circuit pumps; pairing those digital and pumping upgrades with HPGRs at Golden Ridge would allow Zijin to push for both lower specific energy and tighter process control in a single vendor ecosystem.

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    Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.

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