Title:

APP-002544: Amendment application: EIA amendment process to the Husab Mine: Proposed heap leach facility and associated infrastructure

Publication Year:
2021
Abstract:

Amendment application: Proposed Changes to the Husab Mine and Linear Infrastructure, Erongo Region (ECC - 00127). EIA amendment process to the Husab Mine: Proposed heap leach facility and associated infrastructure. Swakop Uranium is investigating the feasibility of utilising their low-grade ROM material at the Husab Mine, in order to further extract available uranium through a heap leach process. The low-grade material is regarded as unsuitable and uneconomic for treatment through the current Tank Leach Facility (TLF). The overall proposed heap leach processing facilities is summarized as follows: Crushing, Screening and Agglomeration: Primary Crushing; Overland conveying; Secondary Crushing, Stockpiling; and High Pressure Grind Rolls Crushing, Screening and Agglomeration. Reagent Storage: Flocculant make-up and storage; Hydrogen Peroxide storage; and Sulphuric Acid storage. Heap Leach, Solution Handling and Reclamation o Racetrack stacking and reclamation system; Heap leach pad; Barren solution pond, Intermediate leach solution (ILS) pond, pregnant leach solution (PLS) pond and wash water pond; and o The PLS pumping system from the PLS pond to tank leach facility PLS pond. Leach Waste Storage: Waste pad; and Stacking system. Services and Utilities: Process water; Potable water; Fire water; and Plant and Instrument air. TLF Interfacing The proposed Heap Leach Project will affect the TLF and utilise the existing infrastructure installed as part of the TLF: Ion Exchange; Solvent Exchange; Final Product Recovery; Acid Plant; Water supply; and Power Supply. Various footprint alternatives of the heap leach pad will be assessed as part of the EIA (amendment) process which will assess the various alternatives and provide input into the preferred option. Existing temporary overland pipeline: Swakop Uranium currently receives (desalinated) water for their mining and processing activities from NamWater via a bulk supply pipeline from the Swakopmund reservoir to the Husab mine, which runs parallel with the C28 road before heading north-eastwards toward the Swakop River, and then northwards to the Husab Mine. In addition to the above bulk water supply pipeline Swakop Uranium constructed a temporary water pipeline for their construction activities, based on an approved EIA process for their linear infrastructure. One of the commitments in the above-mentioned EIA required Swakop Uranium to remove the temporary pipeline approximately six months after the Husab Mine receives permanent water supply. Swakop Uranium has identified the need to utilise the above mentioned "temporary pipeline" on a permanent basis, to ensure sufficient water supply to meet their current and future water requirements, including the proposed heap leach activities.

Item Type:
Report
Language:
en
Last date for commenting on this EIA: Monday, 23 August 2021

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