Which provinces and regions are China's rare earth mainly distributed in?
The importance of rare earth is self-evident. Rare earth is called the irreplaceable "industrial vitamin". It is an indispensable and important raw material in many industries.
We all know that China is a big country of rare earth, so which provinces and regions are China's rare earth mainly distributed in?
According to the latest rare earth report of the U.S. Geological Survey in 2018, the global rare earth REO reserves in 2017 are about 120 million tons, and the reserves in China are 44 million tons, accounting for 36.67% of the total global reserves. According to the distribution structure of global rare earth reserves, China's rare earth reserves rank first in the world.
The distribution of rare earth resources in China shows an obvious regional concentration. Baotou in Inner Mongolia, southern gannan in jiangxi, northern guangdong and liangshan in sichuan are concentrated distribution areas of rare earth resources, accounting for 98% of the total.
The distribution of rare earth resources has formed the distribution pattern of North, South, East and West, and has the distribution characteristics of "light in the north and heavy in the South". Most of the light rare earth resources in the north, such as bastnaesite, are mainly distributed in Bayan Obo mining area in Baotou, Inner Mongolia. Its rare earth reserves account for more than 83% of the total rare earth reserves in China, ranking first in the world, and it is the main production base of light rare earth in China. In the south, most of them are medium heavy rare earth resources, such as ionic rare earth ores, which are mainly distributed in Ganzhou, Jiangxi, Longyan, Fujian and other areas. According to the relevant data, especially in Nanling area, the objective distribution of ion adsorption in the rare earth, heavy rare earth ore, easy mining, easy extraction, has become an important production base of medium and heavy rare earth in China.
Bayan Obo rare earth mine:
Bayan Obo mine is the largest rare earth mine in China. It is a comprehensive deposit of rare earth and iron, niobium, thorium and other elements. The rare earth ores are mainly distributed in the main, East and west iron ore bodies of the mine. In the eastern contact zone and the lower wall of the main and East ore bodies, the main and East ore bodies are highly mineralized with rare earth and fluorinated dolomite has the highest rare earth content, followed by the iron dolomite, with rare earth content. There is an increasing trend towards the deep. Compared with other countries, the average grade of rare earth oxide (REO) is 5% (based on this calculation, the reserve of REO is about 36 million tons), and the mine belongs to Baotou Steel Group. Baotou Steel Group has a rare earth smelting capacity of 100000 tons / year.
Liangshan rare earth mine, Sichuan:
Since the discovery of rare earth ore in Sanchahe, Mianning, Sichuan Province, in 1960, the survey and detailed investigation of rare earth ore began in 1986. Up to now, 29 rare earth deposits have been identified in Sichuan Province, belonging to 9 genetic types. Rare earth mineral resources are concentrated in Panxi area, mostly distributed in Mianning, Xichang, Dechang and other counties and cities of Liangshan Yi Autonomous Prefecture, forming a rare earth resource concentration area with a length of about 300km from north to south, concentrated in yakuping and continental trough of Dechang County, Mianning County.
Weishan rare earth mine, Shandong Province:
The mine is located in Tanghu Township, Weishan County, Shandong Province. From 1958 to 1962, it was discovered by the former Jinan Geological Bureau and the 802 team during the radioactive aerial survey, with an average geological grade of 3.13%. It is a quartz barite carbonate rare earth deposit with simple mineral and gangue composition. It is mainly composed of bastnaesite and bastnaesite, accompanied by barite, calcite, quartz, fluorite, etc., with relatively large inlay size of rare earth minerals. Coarse, generally 0.5mm-0.04mm, it is easy to grind and easy to beneficiate.
China's rare earth resources are widely distributed, and its annual rare earth production accounts for the majority of the global total production. According to the data of the US Geological Survey, the global rare earth production in 2017 was 130000 tons, of which China's mine production reached 105000 tons, accounting for 80.77% of the global total production. In addition to China, Australia, Russia, India and Brazil also have some production. But China accounts for most of the world's rare earth production, and China also controls the total amount of rare earth mining. The global rare earth production has been kept in the range of 100000-140000 tons for a long time.
Rare earth mines in seven southern provinces:
Rare earth deposits have also been found in jiangxi, fujian, hunan, guangdong, guangxi and other lingnan areas, which are collectively referred to as "the seven provinces of south China". Among them, jiangxi has a relatively large concentration of rare earth deposits, but the amount of resources is much less than that in the concentrated areas of rare earth deposits.