Replies to post #6424 on Nextsource Materials Inc (NSRCF)

[tahoe96]

I read Byrons comment, and I don't understand the roasting comments they made in the context of the March PR from the company:

"SGS Lakefield to Optimize Process Flow Sheet in 2011

SGS Mineral Services (Lakefield) is conducting further metallurgical test work as part of the PEA to optimize the vanadium extraction process confirmed by SGS Lakefield in 2010. High vanadium extraction – up to 82% - was achieved by SGS Lakefield using an oxidizing pre-roast followed by an alkaline pressure leach. This process resulted in a leach solution low in deleterious elements and suitable for upgrading by solvent extraction. SGS Lakefield has identified several opportunities to optimize the process flow sheet, including the recycling of leach solution to increase vanadium tenor, reduction of soda ash consumption and optimization of pre-roast and pressure leach conditions (temperature and time).

George Annandale, a consultant to the Company and a vanadium expert with over 30 years of international experience, added that, “the alkaline pressure leach process which resulted in up to 82% vanadium extraction is a well-established and proven technology that is in use today, in particular, in connection with the treatment of uranium ores.”

The 2011 metallurgical program being carried out at SGS Lakefield is being directed by George Annandale.

The Green Giant vanadium is unique in that it is sediment-hosted, in contrast to the majority of known vanadium deposits which are magnetite-hosted. As a result of this geological difference, the metallurgical process for the Green Giant vanadium is different from that used by other vanadium producers.

The unique characteristics of the Green Giant vanadium will allow the Company to produce a high purity vanadium product – called vanadium pentoxide or V2O5 – required for emerging battery technologies using vanadium. V2O5 can also be used in traditional steel applications. Ferrovanadium, which is the usual end-product from magnetite-hosted deposits, can only be used for steel applications."