Lynas to pilot new process for Mt Weld deposit
14th Jun 2012
JUNE 14 – Lynas Corporation is planning a pilot scale development after receiving a positive scoping study for the Duncan Deposit at its rich Mount Weld rare earths project 35km south of Laverton in Western Australia.
The Duncan deposit, adjacent to the Central Lanthanide Deposit at Mount Weld, has a distribution biased towards high value heavy rare earths. The shallow deposit could be mined using opencut methods.
The company says a detailed feasibility study will be undertaken focused on direct chemical beneficiation with demonstration at pilot scale. Preliminary benchtop test-work achieved 84% recovery for non-cerium rare earths to mixed rare earth chloride by direct chemical treatment of the ore.
Capital cost estimate for the Duncan plant is about $A600M and cash cost of production $40/kg REO, processing 500,000tpa to produce 13,000t REO excluding cerium. The weighted average basket sales price is about $US75/kg.
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