In addition to the United States, Canada, and Australia and other foreign countries, Russia, Vietnam and other countries are also large rare earth mineral deposits have been found. India’s rare earth deposits are mostly distributed in the coastal placer and inland placer, give priority to with solitary quarries. Brazil is one of the rare earth mine production, the end of the 19th century was the east coast of monazite sand mine FLY ASH CLASSIFIERS and supply to Germany, and still is one of the suppliers of rare earth materials market in the world. Southeast Asia, Malaysia, Philippines, Indonesia and other countries also produces a small amount of seashore monazite sand mining.
Baiyun obo ore is rare earth and the elements such as iron, niobium, thorium symbiotic composite ore deposit, the Lord of the rare earth ore are mainly distributed in the mine, three iron ore body in the east, and west, the east contact zone and the main rare earth dolomite, east of ore body footwall, main, rare earth mineralization strongly, the east mine hotaru petrochemical dolomite rare earth content is the highest, next in iron ore, dolomite, rare earth content is deep to have higher trend. Other mining area, such as the main, dolomite, west mining area, east east mine Small Scale Gold Mining Equipment lower dielectric, Glenn and o ‘hara: well, a great future reserves, mining area from east to west grade has a downward trend, it is not a rare earth mine. Baotou rare earth ore by baiyun obo mine gradually transferred to the concentrator of baotou tailings dam, tailings dam will be a rare earths storage. So it is very important to protect the tailings dam of rare earth resources, to ensure that China’s rare earth industry sustainable development, ensure that after 2020 years, make China’s rare earth reserves remain reserves the advantages of the first in the world. Concentrator of baotou city at present a total of three rare earths, the annual capacity of 100000 t choose rare earth concentrate (REO), products of bastnaesite, monazite, mixed concentrate grade (REO) as follows: 34.5%, 45%, 50%, 60%, such as types, according to the market demand of production. Baotou rare earth minerals output accounts for the rare earth minerals output by about 54%, but the rare earth still cannot full load production of concentrator. Into the concentrator of ferric oxide ore Concrete Floor Grinders for Sale containing rare earth by about 6%, choose iron after rare earth grade up to 9% ~ 12%, and the choice of rare earth after final tailings grade of rare earth is still around 5%, and not to choose don’t rare earth magnetite tailings mixed (about 90% of the rare earth) into iron tailings dam, about 1% of rare earth (REO) into the iron concentrate (including ThO2 0.008% ~ 0.01%), the blast furnace slag smelting in blast furnace slag to send storage.
Situated WeiShanXian pond reaches, rare earth ore which is located in shandong province from 1958 to 1962 successively by the original jinan geological survey and 802 radioactive survey team found that on average the geological grade 3113%, barite — rare earth carbonate deposits of quartz, simple and gangue minerals, calcium in bastnaesite and fluorocarbon cerium ore is given priority to, associated with calcite, quartz, barite, fluorite, etc., rare earth minerals disseminated extent of thicker, is in commonly 015 mm to 0104 mm, is easy to easy ore grinding. Situated on rare earth dressing plant factory formally in 1982, small scale. From 1991 to 2001, the production of rare earth concentrate REO is 45% ~ 50%. Due to mining into underground mining, ore grade of rare earth to reduce, and other reasons, rare earth concentrate production decline after 2002, the market share is very low.