Keysbrook Mineral Sands Project

Client

Keysbrook Leucoxene Pty Limited

Forecast Completion Date

December 2015

Location

WCP Site – Keysbrook WA
MSP Site – Picton WA

Project Manager

Peter Parsons

Scope of Work

GR Engineering has been engaged to undertake the engineering design, procurement construction and commissioning of a wet concentrator plant (WCP) and associated infrastructure for the Keysbrook Minerals Sands Project. The WCP features overland pumping, thickening and tailings storage infrastructure and has a design throughput of 4.5mtpa to produce circa 119ktpa of HMC. The HMC will be processed further at the Doral Mineral Separation Plant (MSP) to produce approximately 68ktpa of leucoxene and 28ktpa of zircon concentrate for export.

The WCP utilises conventional wet gravity separation to produce a valuable Heavy Mineral Concentrate (HMC). The WCP will receive feed slurry from a Mining Field Unit (MFU) through a dedicated pipeline. Fine material will be removed from the feed slurry by hydrcyclones and the “slimes” fraction will be delivered to a storage void for dewatering and rehabilitation. Coarse tailings from the WCP will also be delivered to the mining void for dewatering and subsequent rehabilitation. HMC produced by the concentration of the feed material will be stored and dewatered on the site ready for trucking to the MSP for further refining.

The existing Doral MSP will be modified and upgraded to enable the Keysbrook HMC to be processed at a rate of 113ktpa on a month on month off campaign basis. Once completed, the notional production from the Doral MSP upgrade is intended to be 31ktpa of L70 leucoxene, 37ktpa of L88 leucoxene and 28ktpa of zircon concentrate for export.