RE:RE:RE:My understandingSheperd wrote: ''At round 3000°C m ost graphites contain small amounts of metallic impurities. If the ash values in the material have to be b elow 200 ppm, thermal purification is applied. By adding gaseous halogens or halogen compounds, all heteroatoms forming stable carbides are transferred into volatile halogen compounds and thus removed. By means of t his procedure, impurities may be lowered to less than 1 ppm.'' https://www.ecga.net/pdf/graphite_production.pdf
From my understanding, you can purify any kind of Graphite to the level achieve by CCB, by using thermal process, its costly and long... Carbon have the highest melting point of all element provided in the list, after thermal processing its normal to lose those element....
Thats true, however, in CCBs case it has three things going for it. Its already injecting graphite that is 99.9% pure from flotation so there are already very few contaminants to liberate. Second, we are in Quebec where Commercial electrical and NG are priced the lowest in Canada. Lastly, lets say it costs us another $1000 per ton, with our stuff selling for $20,000 + per ton I think we can handle it.
So the time to reduce the impurities is low because the float is so pure. Works for me.