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The organic leaching process provides a more cost effective alternative to a standard high pressure acid leach process (HPAL) and the grant is especially important because it has the potential to change the project economics from a development perspective and be better for the environment," said Mr Davies.
The results of pressure acid leach testing by three major companies are now expected in October 2005.
The other involves the treatment of a bulk concentrate by pressure acid leach.
TORONTO -- WDA recently commissioned SNC Lavalin, a highly regarded, world recognised, engineering and construction group with particular metallurgical process expertise, to review the metallurgical testwork that the Company has recently completed at Lakefield Oretest Pty Ltd on the combined Pressure Acid Leach, Atmospheric Leach and Saprolite Neutralisation process.
The results from metallurgical testwork to further develop the integrated Pressure Acid Leach (PAL), Atmospheric Leach (ATL) and Saprolite Neutralization (SN) process flowsheet have been incorporated into a scoping study.
The aim of this testwork is to further develop a combined Pressure Acid Leach (PAL), Atmospheric Leach (ATL) and Saprolite Neutralization (SN) process flowsheet.
A recently completed scoping study by the Company indicates that an integrated plant using the pressure acid leach process in conjunction with atmospheric leaching and saprolite neutralization can produce 40,000 tonnes of nickel and 3,000 tonnes of cobalt per annum in a sulphide intermediate product.
WDA) previously announced in June 2001 that it had completed a Pre-Feasibility Study (PFS) for a nickel/cobalt pressure acid leach project based on its extensive laterite deposits on Halmahera Island, Indonesia.