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Rare Earth Metals,[object Object],Mattison Peters,[object Object]
Overview,[object Object],[object Object]
History of REEs
Supply and demand issues
Global demand
China’s dominance
Price
Environmental and public health issues
Mining expansion, recycling, and alternatives,[object Object]
Plentiful, but minerals (concentrated forms) are rare and difficult and costly to extract
Radioactivity typical around deposits
Elements classified as light or heavy
Five REEs on DOE’s list of most critical materials (2010): dysprosium, neodymium, terbium, europium, and yttrium,[object Object]
Defense Applications,[object Object],Precision guided munitions,[object Object],Lasers,[object Object],Satellite communication,[object Object],Speakers,[object Object],Aircraft generators,[object Object],Displays (TVs and computer monitors),[object Object],Radar and sonar systems,[object Object],Night vision goggles,[object Object]
History,[object Object],[object Object]
6,000 jobs
China had lower prices, so eventually all companies moved there,[object Object]
World Mine Production and Reserves (2009 Data),[object Object]
China’s Dominance,[object Object]
China’s Dominance,[object Object],REE output grew from 2,600 tons in 1996 to 39,000 tons in 2006,[object Object],China limiting REE exports: 50,000 tons in 2009 down to 30,000 tons in 2010,[object Object],More internal demand, reducing mine output and illegal operations,[object Object],Tax rare earth exports up to 25%,[object Object],May limit exports to finished products instead of oxides and metals as well,[object Object],Cut off exports to Japan for 2 months in end of 2010,[object Object],Prices continue to go up,[object Object]
Prices,[object Object],[object Object]
In June prices doubled in only two weeks
Dysprosium oxide (used in permanent magnets) went from $700-740 to $1,470 per kilogram ,[object Object]
Environmental and Public Health Issues,[object Object]
Steps in Rare Earth Material Production,[object Object],Mining from mineral deposits,[object Object],Separating the mined ore into rare earth oxides,[object Object],Refining into metals with different purities,[object Object],Alloying metals together to enhance properties,[object Object],Manufacturing alloys into components such as permanent magnets,[object Object]
Environmental Impacts of Production: Strip Mining,[object Object],[object Object]
Displaces wildlife
Landslides and erosion
Runoff in streams,[object Object]

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Rare Earth Metals by Madison Peters

Notas do Editor

  1. Cerium is the 25th most common element (similar in abundance in the earth to copper)“most critical” based on index that combines risk of supply disruption and importance to the clean energy economy
  2. Most of these products use both heavy and light REEsCommonly used as permanent magnets (especially dysprosium and neodymium) (Other 3 of 5 most critical: europium, terbium, yttrium)Glass coating, screensUse of REEs in hybrids and turbines for magnetic fields making something spinPrius: Each motor uses 2.2 lbs of neodymium, and each battery uses 22-33 lb of lanthanum Terbium and dysprosium used in small quantities also
  3. Missiles: samarium-cobalt magnet motors to direct moving (move parts like fins)Smart bombs: neodymium-iron-boron magnets to control drop direction (when dropped from aircraft)Lasers: used in things like rangefindersCommunication: magnets generate and amplify microwavesSpeakers: used in psychological warfare (create sounds for decoy attack), helicopters use to create sounds to hide rotor blade soundsDepartment of Defense is making supply and demand assessment this year, but estimated 5-10% of rare earth supply is for defense
  4. Monazite-Placer era: mostly India, Brazil, and South AfricaUS domination: 1960s-1980s almost all rare earths came from US- Mountain Pass Mine was primary producer (up to 20,000 tons per day) The U.S. has the world's second-biggest deposit of rare earths, with "approximately 13 million metric tons of rare earth elements," mainly located in western states such as California, Alaska, and Wyoming (U.S. Geological Survey, 2010).Today 97% of mining is done in China- shift because the separation and refining process is labor-intensive and raises safety and environmental concerns Mountain Pass mine shut down in 2002 because of combination of competition from China and pipeline leakChina’s prices were lower because cheaper labor and not as strict environmental regulationsWhen the industry moved to China people in the US no longer specialized in the field, so today we have few rare earth expertsGraph: http://csis.org/files/publication/101005_DIIG_Current_Issues_no22_Rare_earth_elements.pdf
  5. China has enough heavy rare earth elements to last another 15-20 yearsIndustries reliant on rare earths are worth an estimated 5% of global gdp
  6. China has 36% of world’s reserves, 97% of production
  7. China mines 97% of rare earth, produces about 97% of rare earth oxides, is only exporter of commercial quantities of rare earth metals and the majority producer of the two strongest magnets in the world: neodymium-iron-boron and samarium-cobaltMagnet manufacturing: China does 75% neodymium magnets, 60% samarium-cobalt magnets (US has one company that does it but the metal still comes from China)
  8. Eventually top US companies moved to China25% tax typically on heavy rare earth elements (about 15% for light ones)China also plans to limit both mining and processing companies to the 10-20 largest ones by 2015Cracking down on environmental regulations will force some mines to closeUS, Mexico, and European Union filed complaint to World Trade Organization in 2009 against China for limited exports of certain raw materials (not REEs)- Wto ruled against China. China can appeal, but ruling makes case against China for REE export limitation more promising (though some think it will increase tension with China and prove to be harmful)
  9. Dysprosium is heavy (more expensive than light)
  10. Demand will continue to rise- likely even above projected values- as alternative energy sources develop Projections show rise anywhere from 8-780% in next 5 yearsThis shows ROW supply rising a lot in the next 3 years- will take a lot of work and come at costROW= rest of world
  11. Picture: http://www.google.com/hostednews/afp/article/ALeqM5gcxkj7mOtDf2Kv3DHxC2KFkRKy7g
  12. Multiple steps- sometimes happen at different locations Can’t change steps but can develop technology to make processes more efficient
  13. Picture: http://www.nytimes.com/2009/09/26/business/energy-environment/26rare.html?adxnnl=1&adxnnlx=1311017050-7yYhjVVl3ibYgrdBi4Yeug
  14. Use sulfuric acid or explosives to separate rocks, trucks haul them to processing areasPicture: http://www.dailymail.co.uk/news/article-1241872/EXCLUSIVE-Inside-Chinas-secret-toxic-unobtainium-mine.html
  15. In processing areas in China: open trenches of boiling sulfuric acid and other chemicals used to separate REEs
  16. Tailing lake in Baotou- 7 square miles- Started out as a hole for waste mixed with water to be pumped to- when it dried up kids would go play on the black crust but a couple drowned in the sludge so now kids know to stay away- Reporter who visited lake: “Stand on the black crusts for just seconds and your eyes water and a powerful, acrid stench fills your lungs”Tailing ponds- also risk leaking from natural disaster- in 2008 one from an iron ore mine leaked and killed over 250 people in nearby villagePicture: http://www.envoinfo.com/2011/01/in-china-the-true-cost-of-britains-clean-green-wind-power-experiment-pollution-on-a-disastrous-scale/
  17. Baotou Steel Rare Earth supplies 46% of marketBaotou area: 36 times more thorium in soil than in surrounding areasEveryone wears a face mask everywhere they go Workers get acid burns from sulfuric acid trenchesChildren born with weak bonesChina is cracking down on illegal mines, but they account for a significant amount of exports so it will be reduced even more Smuggling provided Japan with REEs during ban Illegal mining is mostly for heavy elements because they are much more expensive
  18. Woman doing laundry in a stream that is not safe to drink or cook with
  19. Stockpiles: China is (one of reasons reducing exports) Creating one has been proposed in US (first would have to get enough to put in stockpile) Risky because technology and prices may change composition of REEs used in production
  20. Molycorp currently selling concentrates from previously mined ores (they aren’t refined in the US)- light elements onlyMostly ore called bastneasite (contains less thorium, but total heavy elements only 0.4% of total) Working on cleaner mining- will treat and recycle water (say it will reduce water usage by 96%)Potential for mining in the U.S.- one of biggest problems is obtaining a permit. Australia, for example, has much better permitting practices than we do. Another problem is the “not in my backyard” syndrome
  21. Goal: vertically integrated production (most processing plants are teamed up with a mine) Still in early stages- will take time for them to develop best methods (same problems as facilities in China with acids)US Government- legislation under review to provide funding for further research to improve technology (specialists left with industry)
  22. Deep Sea mining done for diamonds, and new technology is being developed to mine copper off the coast of New Guinea, so the technology could possibly be adapted for REE useMany skeptics raise questions such as what do you do with the waste? How are you going to access ocean floor? Who decides ownership of the ocean floor?
  23. Hitachi machine- separate 100 rare earth magnets from hard drives per hourWith prices of REEs right now recycling is not cost effective, but as prices go up it could be and as technologies develop recycling will become cheaper
  24. One project- enhance permanent magnets made out of iron and cobalt