TM
Rather than clog up the TON thread with graphite/coke pollution issues, I though I would respond here.
We have all heard how the natural graphite (old antiquated) mines in China are causing environmental damage and health issues - a reason why the Chinese government has been clamping down on them. Excessive use of acids (used in purification) and lack of proper dust control methods (which have caused "graphite rain" on surrounding villages and farms) are the main issues. It's one of the reasons Tesla wants to source it's battery graphite from North America - to be seen "green" and environmentally responsible..
"
It’s mostly mined and processed in China where graphite pollution has fouled air and water, damaged crops and raised health concerns. Now, in response, Chinese authorities are closing dozens of graphite mines and processors in a bid for cleaner air even as global demand for the commodity is surging."
http://www.bloomberg.com/news/artic...-in-california-help-bring-dirty-rain-to-china
You are probably correct in suggesting
natural graphite not as harmful as synthetic, but I disagree that natural graphite mining is
completely safe. Many of the current crop of graphite wannabees will be using excessive amounts of acids to get their product up to a respectable grade. China has learnt it's lessons - they are in the process of cleaning up their own "back yard" but I suspect they will probably go off shore, to less developed countries (who don't have strict environmental laws) and carry on their "methods" in those countries who will turn a blind eye - just IMHO.
Here's a bit of a run down of studies done on human health effects - covers both natural & synthetic. I very much doubt there are any statistics available on the number of Chinese graphite mine workers who have been affected, or those who live in surrounding villages. Considering 70% of the worlds graphite comes from China, one would expect most of the "evidence" surrounding health issues would come from that country ....
At the end of the day, I'm of the firm opinion that NO mining is 100% AOK - it's all detrimental in one way or other to either the environment and/or human health, it's all about the degrees I guess - a little bit detrimental, or heaps.
Human Health Effects:
Human Toxicity Excerpts:
/SIGNS AND SYMPTOMS/ Occupational diseases--carboconioses and dust bronchitis that occur in workers engaged in graphite industry may be attributed to preceding diseases conducive to the development of lung carcinoma..
http://toxnet.nlm.nih.gov/cgi-bin/sis/search/a?dbs hsdb
term @DOCNO 7713
and also this...
https://books.google.com.au/books?id=nDhpLa1rl44C&pg=PT67&lpg=PT67&dq=is natural graphite a health issue&source=bl&ots=zMTpPQHzlY&sig=PXhcXTD4Tw8v8bMU6hxr0KMbRSw&hl=en&sa=X&ei=iIMfVejjOYua8QXOt4H4BA&ved=0CD4Q6AEwBQ#v=onepage&q=is natural graphite a health issue&f=false
Graphite pollution fears spread to Heilongjiang, China
By ALBERT LI, ANDREW MILLER
Published: Friday, 17 January 2014
Environmental pressures reach world’s premier flake graphite region; ‘Graphite rain’ covers local villages
Albert Li, Shanghai
Andy Miller, London
Graphite production in Heilongjiang province is under the spotlight following pollution complaints which could lead to restrictions in the world's leading producing region. Similar complaints in Shandong province only in December led to the temporary closure of all processing plants.
Graphite dust has contributed to severe air and water pollution in Luobei County and Jixi City, creating what is being described as ‘graphite rain’. This has sparked complaints from both residents and business owners which has thrust the province, which produces 43% of the world's 420,000 tpa flake graphite in 2012, into the spotlight.
Pollution is affecting the health of the local population as well as blighting the area’s farming industry, reports in China say. Furthermore, according to locals, failure to prevent unofficial mining operations has compounded these issues by destroying the region’s landscape.
While recent government rulings have required companies in some areas to invest in more environmentally friendly processing infrastructure, the failure of local governments in regulating Heilongjiang’s graphite sector has caused resource depletion, an inefficient industrial structure and heavy pollution.
This news follows the more significant closures of graphite mines in Pingdu where eight companies have already been shut-down and several more are awaiting government approval to restart production.
Up to 55 graphite operations were suspended in Shandong Province at the end of 2013 as surprise spot-checks revealed a range of environmental concerns. While not yet reaching this level, similar revelations about production practices in Heilongjiang Province now threaten to fuel further intervention in an even more critical region.
The importance of Heilongjiang
According to Industrial Minerals’ Natural Graphite Report 2012-2016, Heilongjiang accounts for close to half of China’s total flake graphite production capacity, meaning any type of suspension or consolidation could have major repercussions for the global market.
Although the ownership structure of operations in Heilongjiang may prevent this type of intervention immediately, growing pressures to limit pollution may be used as a means of improving the structure of the industry in the longer-term.
There are currently nine major flake graphite producers based in Heilongjiang, more than in any other region in China.
Luobei County and Jixi City, the two graphite producing areas in the region, host the largest mines in the country however industry experts fear that the region’s resources could be depleted in as little as 20 years if mining practices continue at their current speed.
Many companies in the region are thought to be using processing equipment which is up to 30 years old. As well as affecting the efficiency of production in the region, it is also having a more pressing impact on the local environment.
Despite some efforts to encourage investment in improving the sustainability of production, heavy pollution persists.
In the Mashan district, for instance, companies have been required to invest between RMB 1.5 – 2m ($250,000 – $330,000) to update processing equipment, storing methods and transportation infrastructure. Nevertheless, graphite dust continues to blight local homes and crops, while tailing ponds pollute water supplies.
As the national government pushes ahead with plans to improve both the country’s environmental sustainability and the efficiency of production, heavy pollution could incite further intervention from industry regulators.
Rare earth comparisons
The importance of the flake graphite industry to the local economy makes it unlikely that production will be completely suspended as the provincial government pursues market improvements. Graphite companies are a source of significant investment in the region.
This does not, however, override the requirement for reform. A number of parallels have been drawn between today's state of the graphite market and the previous situation in the rare earths industry.
Out of date infrastructure, poorly regulated markets and inefficient production methods mean pressure for industrial change is growing. Whether environmental pressures will provoke significant action is yet to be seen.
http://www.indmin.com/Article/32986...ution-fears-spread-to-Heilongjiang-China.html
