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Pastimes : Zenyatta Free Speech Board -- Ignore unavailable to you. Want to Upgrade?

To: stuffbug who wrote (2089)	7/17/2015 6:44:00 PM
From: NuclearCrystals	1 Recommendation Recommended By hoov Read Replies (1) \| Respond to of 22811

Stuffbug, I can only go by what Aubrey Eveleigh was conveying himself mid-2013: "It’s a base, not an acid. We use 25 percent by weight, and we can recycle the material. It’s much cheaper and obviously we’ve got extremely high grades from it, and with good recoveries." " The other thing that was said in that interview is that we use acid. That’s totally wrong. We don’t use acid. It’s a base, sodium hydroxide." graphiteinvestingnews.com From there I can only go by Stephen Mackie of SGS describing the standard non HF caustic bake procedure and even if you conclude the Albany process isn't identical to the standard process, it more or less follows the same path. Pay close attention to each step and try to understand the similarities and the one difference in the two processes. "Dr. Stephen Mackie, Manager, Hydrometallurgical Group, SGS Canada Ltd. (Lakefield), described the SGS caustic bake procedure as “...our standard non-hydrofluoric acid method used to chemically upgrade graphite concentrates. This method involves a three step process: 1. The graphite is mixed with sodium hydroxide (caustic soda), and then baked at an elevated temperature for a defined period of time. 2. The baked product is then slurried in water for a defined period of time, essentially washing the majority of the unreacted caustic soda and soluble impurities from the graphite solids, which are then recovered by filtration. 3. The resultant filter cake is subjected to a mild acid leach using dilute sulphuric acid, to neutralize any residual caustic soda, and to remove impurities which are insoluble in caustic solution. The graphite solids are again filtered, washed, and dried, to produce the final upgraded graphite product.”