Re: Sulphur or lack there of
in response to
by
posted on
Jul 31, 2014 07:04AM
Hydrothermal Graphite Deposit Ammenable for Commercial Graphene Applications
CS, you should pm Hoov and ask him some questions directly including if he does own shares of ZEN as I cannot speak for him. However, I do trust the NRs of ZEN and the people behind those news releases. I do encourage you to reread those news releases and judge for yourself what ZEN has.
Here are some highlights of what ZEN said:
Published physics data on electrical resistivity of graphite typically ranges from .003 to .060 ohm-centimetre. Zenyatta's graphite showed a resistivity of .0034 ohm-centimetre...
Resistivity is significantly influenced by the degree of crystallinity of the graphite, particle orientation and temperature. Higher crystallinity results in lower resistivity and therefore higher conductivity. Resistivity also varies considerably when measured axial or perpendicular to the c-axis of the graphite crystal. The resistivity of conductors, like graphite, depends strongly on a lack of impurities in the material, an important fact which makes them valuable in electronics. Previous mineralogical studies show that Zenyatta's Albany graphite material to be of high quality and containing minor amounts of impurities (feldspar and quartz) which can be easily removed to produce an ultra high-purity graphite product.
Don Hains, PGeo, industrial minerals specialist and adviser to Zenyatta, stated: "SEM photos show highly crystalline graphite with no contaminants and a very high aspect ratio (length verses thickness). These images closely resemble micrographs of commercial grade synthetic graphite as published by major synthetic graphite producers. The typical particle size from the SGS bench-scale processing was in the seven- to 46-micron range."
A high degree of crystallinity results in various positive qualities that graphite is known for such as electrical conductivity, thermal conductivity, compressibility, dimension stability, bending strength and lubricity.
Surface area
The university also provided a BET (Brunauer-Emmett-Teller) analysis of the company's high-purity graphite. BET testing is widely used in surface science for the calculation of surface areas of solids. The surface area of graphite is an important physical property for electronics, Li-ion batteries, various other batteries, supercapacitors, sensors and catalysts to name just a few applications.
Don Hains, PGeo, stated: "The BET results indicate very high-quality natural graphite matching high-purity synthetic graphite in terms of surface area. Also, the average pore diameter for the Zenyatta material shows the unit cells are the same as determined for pure natural graphite."
BET data are within range of typical high-grade synthetic graphite powder. It is also worth emphasizing that the measurements were performed on unmilled graphite material produced from the initial caustic bake process development tests.
Dr. Bharat Chahar, PhD, is a chemical engineer with more than 30 years of carbon research and development experience with ConocoPhillips based in Houston, Tex. Dr. Chahar obtained a BTech (chemical engineering) from Indian Institute of Technology at Delhi, India; an MSc (chemical engineering) from University of Alberta, Edmonton, Canada; and a PhD (chemical engineering) from Rice University, Houston, Tex., United States.
Dr. Chahar stated: "Having carefully reviewed the Albany graphite data available, I am convinced that Zenyatta has a resource with excellent potential for high-value carbon applications. It is a special natural graphite deposit unlike any other that I've seen in the industry. I am thrilled and excited to be part of a top-notch ZEN team to help bring this unique graphite product to the market. In my experience, if you offer a better product with an obvious advantage, the world will beat a path to your door."
Dr. Chahar stated: "I am delighted to have Mr. Yamashita join the ZEN team. We worked closely together at ConocoPhillips to successfully bring the CPREME graphite materials to customers globally. Tadashi possesses a strong technology background and a broad business network, especially in Japanese industrial materials. He will be invaluable to Zenyatta as we advance our ultrahigh-purity carbon product for potential use in high-tech applications and will be instrumental during ongoing discussions with end-users in Asia. Mr. Yamashita and I will continue discussions with interested parties and develop new relationships with downstream companies to create awareness of the ultrahigh-purity material while the graphite deposit is being developed."
Mr. Yamashita commented: "Asia and specifically Japanese companies are keenly interested in high-quality and secure supplies of natural resources sourced from stable political jurisdictions like Canada. I recognize that Zenyatta has discovered a special and large resource with excellent potential for high-value carbon applications. I am very excited to be working with Bharat again and to be part of the ZEN team to help bring this unique graphite product to the Asian market."
Now, we have had some great links posted here lately that show that most of the high end li-ion battery players are in Japan and that is the market we are going after. It is no accident that Mr Yamashita was brought on board and for Dr. Chahar to bring his good friend on board, it means he fully trusts and endorses the Zenyatta graphite. That is good enough for me to believe in this company!
G.