国内精品一区二区三区最新_不卡一区二区在线_另类重口100页在线播放_精品中文字幕一区在线

 
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.

 
     

国内精品一区二区三区最新_不卡一区二区在线_另类重口100页在线播放_精品中文字幕一区在线
国产精品伦一区| 免费的国产精品| 亚洲三级在线免费| 国产精品久久久久久久久免费相片 | 亚洲色图欧美在线| 夜夜嗨av一区二区三区网页 | 韩国中文字幕2020精品| 国产成人免费xxxxxxxx| 99久久国产综合色|国产精品| 99国产欧美另类久久久精品| 欧美亚洲国产bt| 日韩一区二区三区视频在线| 精品国产成人系列| 亚洲丝袜自拍清纯另类| 性感美女久久精品| 精品一区二区三区香蕉蜜桃| voyeur盗摄精品| 欧美高清精品3d| 欧美国产精品中文字幕| 亚洲国产精品人人做人人爽| 韩国女主播一区| 色狠狠av一区二区三区| 日韩免费看的电影| 亚洲视频狠狠干| 精品一区二区在线免费观看| 色婷婷久久久亚洲一区二区三区| 欧美一区二区三区婷婷月色| 国产欧美日韩综合| 日韩电影一区二区三区| 成人晚上爱看视频| 欧美一级电影网站| 一区二区三区在线高清| 国产一区二区三区蝌蚪| 在线影院国内精品| 久久久99久久| 三级在线观看一区二区| 99久久99久久精品国产片果冻 | 亚洲国产日韩a在线播放| 国产精品99久久久久久有的能看| 在线看日韩精品电影| 久久久欧美精品sm网站| 丝袜诱惑制服诱惑色一区在线观看 | 日韩免费性生活视频播放| 亚洲免费观看高清完整| 国产在线精品一区二区不卡了| 91国偷自产一区二区开放时间 | 日本韩国一区二区| 国产婷婷一区二区| 日韩1区2区日韩1区2区| 91成人网在线| 亚洲视频一区在线观看| 高潮精品一区videoshd| 欧美电影免费观看高清完整版在| 一二三四社区欧美黄| 成人av电影免费在线播放| 久久众筹精品私拍模特| 日本不卡视频一二三区| 欧美午夜片在线观看| 亚洲欧美电影院| 不卡高清视频专区| 中文一区在线播放| 国产91清纯白嫩初高中在线观看 | 久久久精品2019中文字幕之3| 日韩 欧美一区二区三区| 欧美性猛交xxxxxxxx| 一区二区三区在线视频观看 | 夜色激情一区二区| 色菇凉天天综合网| 亚洲欧美日韩国产手机在线| 成人黄色国产精品网站大全在线免费观看| 精品国产一区二区三区av性色 | 欧美性大战xxxxx久久久| 亚洲美女精品一区| 91国偷自产一区二区使用方法| 亚洲欧美一区二区三区极速播放| 99久久精品国产导航| 亚洲人123区| 欧美日本精品一区二区三区| 午夜av一区二区三区| 欧美男女性生活在线直播观看| 日韩精品一二三| 欧美一区二区久久| 国产精品综合视频| 亚洲婷婷综合色高清在线| 日本福利一区二区| 日韩av高清在线观看| 久久影院视频免费| 94色蜜桃网一区二区三区| 夜夜精品视频一区二区| 欧美一区二区三区在线观看视频| 久久国产尿小便嘘嘘| 国产丝袜欧美中文另类| 91蜜桃免费观看视频| 婷婷开心激情综合| www亚洲一区| 色哟哟一区二区三区| 日本中文在线一区| 国产精品―色哟哟| 欧美乱妇23p| 丁香婷婷综合网| 五月综合激情婷婷六月色窝| 亚洲精品在线观看视频| 一本色道久久综合亚洲精品按摩| 五月天欧美精品| 国产亚洲1区2区3区| 欧美日韩午夜影院| 国产成人aaaa| 丝袜亚洲另类丝袜在线| 国产精品久久久久久久久果冻传媒| 色婷婷久久久久swag精品| 精一区二区三区| 亚洲综合一区二区三区| 久久久99精品久久| 7777精品伊人久久久大香线蕉超级流畅 | 久久99在线观看| 亚洲一本大道在线| 欧美激情综合五月色丁香小说| 欧美日韩另类一区| av不卡免费电影| 国产一区二区美女| 日韩精品一二三| 亚洲自拍与偷拍| 国产精品免费aⅴ片在线观看| 日韩一区二区麻豆国产| 91国偷自产一区二区三区成为亚洲经典 | 亚洲综合色自拍一区| 中文字幕一区二区三区视频| 亚洲精品一区二区三区在线观看 | 亚洲黄色小视频| 久久久噜噜噜久噜久久综合| 欧美精品 国产精品| 在线欧美日韩国产| av午夜一区麻豆| 粉嫩嫩av羞羞动漫久久久| 久久99在线观看| 久久99精品国产麻豆婷婷| 奇米四色…亚洲| 婷婷久久综合九色国产成人 | 国精品**一区二区三区在线蜜桃| 日韩精品一区第一页| 亚洲成人综合网站| 亚洲一二三级电影| 亚洲成人av在线电影| 亚洲影视资源网| 一区二区三区.www| 亚洲综合色区另类av| 亚洲一区在线观看网站| 一区二区三区 在线观看视频| 日韩电影在线观看电影| 喷水一区二区三区| 蜜桃久久久久久久| 免费人成精品欧美精品| 久久精品国产精品亚洲红杏| 精品在线播放午夜| 国产 日韩 欧美大片| 99久久伊人网影院| 色婷婷一区二区三区四区| 欧美三级中文字| 欧美一区二区在线视频| 日韩三级免费观看| 久久精品亚洲精品国产欧美kt∨| 国产欧美一区二区精品久导航| 国产精品美女久久福利网站| 中文字幕在线不卡一区| 一区二区三区久久| 日韩国产一区二| 国产一区二区在线免费观看| 成人的网站免费观看| 欧美在线观看禁18| 精品美女被调教视频大全网站| 国产亚洲一区二区三区| 亚洲欧美日韩中文字幕一区二区三区| 亚洲精品高清在线| 久久成人久久爱| 91在线视频观看| 在线成人高清不卡| 欧美国产日韩亚洲一区| 亚洲国产精品久久不卡毛片| 九一九一国产精品| 91视视频在线直接观看在线看网页在线看 | 欧美男女性生活在线直播观看| 久久久久久久久久看片| 国产精品福利在线播放| 视频一区二区三区中文字幕| 国产精品一区二区免费不卡 | 成人高清视频在线| 欧美精品乱码久久久久久按摩 | 天堂成人免费av电影一区| 国产成人在线视频网址| 欧美乱妇23p| 综合久久久久久久| 久久爱www久久做| 欧美中文字幕一区二区三区 | 99视频有精品| 日韩精品专区在线| 亚洲自拍偷拍九九九| 波多野结衣视频一区| 精品国产凹凸成av人网站| 亚洲国产日产av| 91丨porny丨中文|