To: toccodolce who wrote (229258 ) 6/13/2013 11:28:33 PM From: hoov 2 RecommendationsRecommended By Eva Merlot
Read Replies (1) | Respond to of 314178 Sorry, but my calculation is that one tonne of graphene could produce 265 billion phones, far more than have ever yet come into existence. The electrical characteristics of Zenyatta's graphite have not yet been evaluated. But even the somewhat contaminated Sri Lankan hydrothermal graphite sells at a premium to run of the mill flake graphite, and competes in some applications with synthetic. It could be argued that synthetic graphite was developed in order to deal with the limited supply of hydrothermal graphite. Initial purification tests of ZEN's graphite were very promising, as upgrading to 99.97% or better was accomplished with simple processing, using off the shelf equipment. The ore was crushed, concentrated via flotation, then heated moderately, and finally, immersed in caustic soda (lye). Everything but the graphite dissolves in the caustic, so filtering and washing yielded nearly pure graphite. The company hasn't even assessed this part yet, but the caustic can be regenerated (eliminating environmental issues), and if carefully done, that generates two by-products: high-purity silica, and feldspar (the waste part of the ore). The silica can run $2500/tonne, and the feldspar is variable, but $300-600/tonne. Our silica by-product alone could be worth more than run-of-the-mill flake graphite, on a per tonne basis, and might even equal the value of the graphite itself, due to its higher concentration in the ore. But, it they don't market these products, they're quite benign. You know them already, as beach sand. Other than the effect of digging a hole in the ground, I don't anticipate any environmental issues. I've said that I'm an analytical chemist, but I applied that to environmental toxicology, so I am giving an expert opinion here. Back to the graphite. The high purity that is readily achieved is really the selling point. Some end user is going to be very happy to obtain this material at that purity. Natural graphite is generally considered to have superior properties to synthetic, but the issue of impurities has limited the applications. I'm not saying that this will be a market, but it is possible that ZEN's graphite might have just the right properties for lithium ion battery electrodes. We just don't know the markets that will open, and those that will be unavailable, but a natural graphite of high purity will find a market. Of that I am certain. And our production costs will be lower than anyone in the industry. Lar