久久精品30_一本色道久久精品_激情综合视频_欧美日韩一区二区高清_好看的av在线不卡观看_国产自产精品_91久久黄色_午夜亚洲福利_欧美黄在线观看_国内自拍一区

 
I. Current Situation of China's Rare Earth Industry
     
 

I.Current Situation of China's Rare Earth Industry

Rare earths are a group of 17 chemical elements in the periodic table of the elements, i.e.,Lanthanum (La), Cerium (Ce), Praseodymium (Pr), Neodymium (Nd), Promethium (Pm),Samarium (Sm), Europium (Eu), Gadolinium (Gd), Terbium (Tb), Dysprosium (Dy), Holmium(Ho), Erbium (Er), Thulium (Tm), Ytterbium (Yb) and Lutecium (Lu), and their congenersScandium (Sc) and Yttrium (Y). According to their atomic weights and physicochemicalproperties, they are divided into light, middle and heavy rare earth elements. The first fiveabove-mentioned elements are light ones, and the rest are either middle or heavy ones.Because of their unique physicochemical properties, rare earth elements are consideredindispensable in modern industry as they are extensively used in areas such as new energy,new materials, energy conservation and environmental protection, aeronautics andastronautics and electronic information, to name but a few.

China is relatively abundant in rare earth resources, and its rare earth reserves account forapproximately 23 percent of the world's total. China's rare earth resources display the followingcharacteristics:

- Their distribution presents a "light north, heavy south" pattern. Light rare earth mines aremainly located in Baotou of the Inner Mongolia Autonomous Region, and other northern areas,as well as in Liangshan of Sichuan province, while ion-absorbed-type middle and heavy rareearth deposits are mainly found in Ganzhou of Jiangxi province, Longyan of Fujian province,and some other southern areas.

- The types of rare earth resources are rather diversified. China has a rich variety of rare earthminerals, including bastnaesite, monazite, ion-absorption minerals, xenotime, fergusonite, andothers, with a relatively complete range of rare earth elements. Among them, the ion-absorptionmiddle and heavy rare earth deposits occupy an important position in the world.

- The associated radioactive elements of light rare earth minerals pose major problems for theenvironment. Most of China's light rare earth deposits ores can be industrially mined, butthorium (Th) and other radioactive elements are difficult to treat, and therefore great attentionmust be paid to its impact on people's health and the ecology when they are mined, smeltedand separated.

- Ion-absorption middle and heavy rare earth ores have poor occurrence conditions. In ion-absorbed-type rare earth deposits, the rare earth elements are absorbed in the soil in the formof ions, making it difficult for industrial exploitation due to sparse distribution and lowabundance rate.

Since the introduction of the reform and opening-up policies in the late 1970s, China's rareearth industry has seen rapid development. Major progress has been made in the researchand development of relevant mining, smelting and utilizing technologies, and the increasingexpansion of the industrial scale has basically satisfied the needs of the nation's economicgrowth and social development.

- A complete industrial system has been achieved. China has developed three major rare earthproduction areas, i.e., the light rare earth production areas in Baotou of Inner Mongolia andLiangshan of Sichuan, and middle and heavy rare earth production areas in the five southernprovinces centering around Ganzhou of Jiangxi province. With a complete industrial systemarmed with mining, dressing, smelting and separating technologies and incorporatingequipment manufacturing, material processing and end-product utilization, China can produceover 400 varieties of rare earth products in more than 1,000 specifications. In 2011, Chinaproduced 96,900 tonnes of rare earth smelting separation products, accounting for more than90 percent of the world's total output.

- The market environment is gradually improving as China is constantly expediting reform in therare earth industry, promoting the development of a market system featuring diversifiedinvestment, independent decision-making by businesses and pricing according to supply anddemand. In recent years, investment in China's rare earth industry has experienced rapidgrowth, the market has been constantly expanded, state-owned, privately owned and foreign-invested sectors coexist, and the value of the rare earth metal market is approaching 100billion yuan. The market order in this sector is gradually improving, and progressivedevelopment is being made in the merger and reorganization of businesses. The old picture ofa "small, scattered, and disorderly" rare earth industry has vanished.

- Scientific and technological level has improved further. After many years of development,China has established a relatively complete R&D system, pioneered numerous technologies ofinternational advanced levels in rare earth mining and dressing, smelting, separating, etc., andits unique mining and dressing processes and advanced separating techniques have laid asolid foundation for efficient exploitation and utilization of rare earth resources. The rare earthnew materials industry has experienced steady development, and industrialization has beenachieved in using rare earths to produce permanent-magnet, luminescent, hydrogen-storage,and catalytic materials, and other new materials, providing support for the restructuring andupgrading of traditional industries, and the development of emerging industries of strategicimportance.

The rapid development of China's rare earth industry has not only satisfied domestic demandfor economic and social development, but also made important contributions to the world's rareearth supply. For many years, China has been faithfully fulfilling its pledges upon its accessionto the WTO, honoring the WTO rules, and promoting fair trade in rare earths. Currently, Chinasupplies over 90 percent of the global market rare earth needs with 23 percent of the world'stotal reserves, its output of permanent-magnet, luminescent, hydrogen-storage and polishingmaterials, which use rare earths as raw materials, accounts for more than 70 percent of theworld's total, and China-produced rare earth materials, parts and components, as well as rareearth end products, such as energy-saving lamps, special and small electric motors and NiMHbatteries, satisfied the development needs of high-tech industries of other countries, especiallythose of the developed countries.

Despite its rapid development, China's rare earth industry also faces many problems, for which China has paid a big price. The following are some of the problems:

- Excessive exploitation of rare earth resources. After more than 50 years of excessive mining, China's rare earth reserves have kept declining and the years of guaranteed rare earth supply have been reducing. The decline of rare earth resources in major mining areas is accelerating, as most of the original resources are depleted. In Baotou, only one-third of the original volume of rare earth resources is available in the main mining areas, and the reserve-extraction ratio of ion-absorption rare earth mines in China's southern provinces has declined from 50 two decades ago to the present 15. Most of the southern ion-absorption rare earth deposits are located in remote mountainous areas. There are so many mines scattering over a large area that it is difficult and costly to monitor their operation. As a result, illegal mining has severely depleted local resources, and mines rich in reserves and easy to exploit are favored over the others, resulting in a low recovery rate of the rare earth resources. Less that 50 percent of such resources are recovered in ion-absorption rare earth mines in southern China, and only ten percent of the Baotou reserves are dressed and utilized.

- Severe damage to the ecological environment. Outdated production processes and techniques in the mining, dressing, smelting and separating of rare earth ores have severely damaged surface vegetation, caused soil erosion, pollution, and acidification, and reduced or even eliminated food crop output. In the past, the outmoded tank leaching and heap leaching techniques were employed at ion-absorption middle and heavy rare earth mines, creating 2,000 tonnes of tailings for the production of every tonne of REO (rare earth oxide). Although more advanced in-situ leaching method has been widely adopted, large quantities of ammonium nitrogen, heavy metal and other pollutants are being produced, resulting in the destruction of vegetation and severe pollution of surface water, ground water and farmland. Light rare earth mines usually contain many associated metals, and large quantities of toxic and hazardous gases, waste water with high concentration of ammonium nitrogen and radioactive residues are generated during the processes of smelting and separating. In some places, the excessive rare earth mining has resulted in landslides, clogged rivers, environmental pollution emergencies, and even major accidents and disasters, causing great damage to people's safety and health, and the ecological environment. At the same time, the restoration and improvement of the environment has also heavily burdened some rare earth production areas.

- Irrational industrial structure. China's rare earth industry has huge over-capacity in smelting and separating. On the other hand, the research and development of rare earth materials and components is lagging behind, its level of rare earth new materials development and end-product application technologies is significantly lower than the advanced international level, and the IPR ownership, and the production and processing technologies of new-type rare earth materials and components are relatively small in number. As a result, low-end products overflow while high-end products are in short supply. China's rare earth metals industry, relatively small in scale, features a low concentration rate with numerous businesses, but lacks large enterprises with core competitiveness. Self-discipline in the industry is also weak, and vicious competition exists to some extent.

- Severe divergence between price and value. Over quite a long period of time, the price of rare earth products has remained low and failed to reflect their value, the scarcity of the resources has not been appropriately represented, and the damage to the ecological environment has not been properly compensated for. Since the second half of 2010, despite the gradual rise in the price of rare earth products, the rise has been much lower than that in the price rise of other raw materials like gold, copper and iron ore. From 2000 to 2010, the price of rare earth products rose by 2.5-fold, while that of gold, copper and iron ore increased by 4.4-, 4.1-, and 4.8-fold during the same period, respectively.





- Grave smuggling. Due to multiple factors, including domestic and international demand, thesmuggling of rare earth products to overseas markets continues to be a problem in spite of theefforts made by China's customs listing it as a key criminal act to crack down on. From 2006 to2008, the volumes of rare earth products imported from China, according to statistics collectedby from foreign customs, were 35 percent, 59 percent and 36 percent higher than the volumesexported, as statistics released by the Chinese customs show, and the figure from foreigncustoms is 1.2-fold over the Chinese figure in 2011.

To address the salient problems in the development of China's rare earth industry, the Chinesegovernment has tightened supervision over it. In May 2011, the State Council issuedGuidelines on Promoting the Sustainable and Healthy Development of the Rare Earth Industry(hereinafter referred to as the "Guidelines"), attaching more importance to the protection ofresources and the environment, and the realization of sustainable development. According tothe "Guidelines," the government - in accordance with law - will strengthen control over themining, production, circulation, import and export, and other links of the rare earth industry, andstudy and formulate as well as amend and improve related laws and regulations on theadministration of this industry. The Chinese government has established an inter-departmentalcoordinating mechanism for the rare earth industry to make overall plans and study of thenational strategy, program, plan, policy, and other important issues concerning thedevelopment of the rare earth industry. The state has also set up a rare earth office tocoordinate and propose plans on the mining, production, reserve, and import and export ofrare earth materials. The relevant departments of the State Council will perform their respectiveadministrative functions accordingly. In April 2012, Association of China Rare Earth Industrywas founded with official approval. It is expected to play an important role in promoting self-discipline in the industry, regulating the industrial order, and proactively carrying outinternational cooperation and exchanges, among other functions. A year or so has passedsince the implementation of the "Guidelines," the transformation of the development pattern ofChina's rare earth industry has picked up speed, and significant improvement has been seen inits development order.

 
     

久久精品30_一本色道久久精品_激情综合视频_欧美日韩一区二区高清_好看的av在线不卡观看_国产自产精品_91久久黄色_午夜亚洲福利_欧美黄在线观看_国内自拍一区
91久久黄色| 婷婷中文字幕一区三区| 成人一区在线看| 日本亚洲天堂网| 欧洲视频一区二区| 国产精品综合久久| 精品免费一区二区三区| 欧美日本中文| 亚洲国产中文字幕| 欧美日韩中文另类| 99精品久久免费看蜜臀剧情介绍 | 欧美精选午夜久久久乱码6080| 国产精品自拍毛片| 一区二区三区免费网站| 欧美性大战xxxxx久久久| 国产jizzjizz一区二区| 国产精品色一区二区三区| 色悠悠亚洲一区二区| 国产剧情在线观看一区二区| 亚洲精品国产视频| 欧美日韩国产123区| 91色在线porny| 亚洲精品精品亚洲| 久久久噜噜噜久噜久久综合| 国产精品日韩一区二区| 国产一区二区日韩精品| 国产精品麻豆视频| 日韩三级视频在线观看| 亚洲午夜精品福利| 精东粉嫩av免费一区二区三区| 精品av综合导航| 亚欧成人精品| av动漫一区二区| 亚洲成人免费av| 精品福利二区三区| 欧美日韩国产免费| 欧洲一区二区三区在线| 亚洲欧美99| www.日韩在线| 国产一区二区精品久久99| 视频一区视频二区在线观看| 精品久久久网站| 欧美日韩精品专区| 色婷婷综合在线| 老司机一区二区三区| 北条麻妃国产九九精品视频| 韩国一区二区三区| 夜夜爽夜夜爽精品视频| 国产精品伦理在线| 久久久夜色精品亚洲| 日韩欧美国产午夜精品| 国产美女一区| 日韩一级大片| 97久久人人超碰| 成人国产免费视频| 男男视频亚洲欧美| 99久久er热在这里只有精品15| 国产一区二区三区在线观看免费视频 | 中文久久乱码一区二区| 国产三级一区二区三区| 欧美私模裸体表演在线观看| 美女尤物久久精品| 久久久久一区二区| 亚洲无玛一区| 激情成人综合| 在线观看成人av电影| 成人高清av在线| 成人精品小蝌蚪| 99精品久久免费看蜜臀剧情介绍| av在线不卡免费看| av激情成人网| 欧美久久久久久| 亚洲一级高清| 夜夜爽av福利精品导航| 99久久国产综合精品女不卡| 播五月开心婷婷综合| 91在线国产福利| 欧美区国产区| 1024日韩| 亚洲免费婷婷| 欧洲生活片亚洲生活在线观看| 在线观看亚洲专区| 欧美日韩国产高清一区二区三区| 91精品国产91综合久久蜜臀| 欧洲精品在线观看| 欧美日韩久久久| 欧美成人精品二区三区99精品| 久久日一线二线三线suv| 欧美日韩国产三级| 91精品福利在线一区二区三区 | 精品国产免费人成电影在线观看四季| 337p日本欧洲亚洲大胆色噜噜| 性做久久久久久免费观看欧美| 91传媒视频在线播放| 亚洲天堂黄色| 性感少妇一区| 欧美日韩美女一区二区| 日韩一区二区三| 国产欧美日韩在线看| 日韩三级精品电影久久久| 精品av久久707| 亚洲精品视频在线看| 日韩av中文字幕一区二区三区| 国产一区二区免费看| gogogo免费视频观看亚洲一| 狠狠色伊人亚洲综合网站色| 国产伦理一区| 欧美疯狂性受xxxxx喷水图片| 久久久精品国产免费观看同学| 亚洲黄色片在线观看| 美女网站色91| 国产一区二区免费在线| 91丨九色丨尤物| 一区二区三区偷拍| 欧美日韩一区二区在线观看视频| 久久亚洲精品国产精品紫薇| 亚洲卡通欧美制服中文| 久久精品国产**网站演员| 国模套图日韩精品一区二区| 91在线免费视频观看| 中文精品在线| 日韩欧美一级在线播放| 自拍偷拍欧美激情| 亚洲国产精品久久艾草纯爱| 韩国午夜理伦三级不卡影院| 午夜性色一区二区三区免费视频| 一本色道久久综合亚洲91| 26uuuu精品一区二区| 亚洲午夜在线电影| 成人久久视频在线观看| 亚洲欧美久久久久一区二区三区| 欧美一级高清大全免费观看| 成人免费小视频| 五月天久久比比资源色| 成人h动漫精品一区二区| 国产日韩欧美一区二区三区在线观看| 91麻豆精品国产| 日本一区二区三区久久久久久久久不| 午夜不卡av在线| 牛牛国产精品| 国产精品日韩久久久| 欧美成人欧美edvon| 日韩av二区在线播放| 欧美三级网页| 色网综合在线观看| 国产精品无码永久免费888| 精品一区二区三区免费视频| 亚洲激情社区| www国产成人免费观看视频 深夜成人网| 亚洲一区二区三区四区不卡| 激情综合亚洲精品| 亚洲精品资源| 久久这里只有精品6| 卡一卡二国产精品 | 波多野结衣在线aⅴ中文字幕不卡| 亚洲欧美日韩精品在线| 国产色综合一区| 黄色资源网久久资源365| 一本色道久久综合亚洲精品婷婷 | 最近中文字幕一区二区三区| 高清在线成人网| 欧美综合一区二区| 亚洲免费av网站| 精品一区二区三区av| 国产一区二区三区免费不卡 | 欧美综合视频在线观看| 亚洲美女电影在线| 色综合天天综合网天天狠天天 | 国产精品一区二区在线看| 久久精品主播| 成人欧美一区二区三区小说| av午夜精品一区二区三区| 欧美日韩亚洲综合一区| 亚洲电影一区二区| 亚洲国产导航| 欧美精彩视频一区二区三区| 亚洲一区av在线| 国产一区观看| 91麻豆精品国产91久久久使用方法 | 亚洲美女黄色| 国产精品视频观看| 欧美有码视频| www激情久久| proumb性欧美在线观看| 欧美精品aⅴ在线视频| 久久99精品久久久久久国产越南 | 亚洲精品乱码久久久久久蜜桃麻豆 | 精品av久久707| 白白色亚洲国产精品| 日韩女优av电影在线观看| 国产在线播放一区三区四| 欧美三级电影网站| 秋霞影院一区二区| 日本乱人伦一区| 免费成人在线视频观看| 在线中文字幕不卡| 蜜桃久久久久久久| 欧美伊人久久久久久午夜久久久久| 视频一区免费在线观看| 一本色道a无线码一区v|