Anhydrous Rare Earth

Improve crop yield and quality
Anhydrous rare earths can improve soil quality, provide plants with more adequate nutrients and growth environment, promote crop growth and development, and increase crop yield and quality.

Increase plant stress resistance and tolerance
Anhydrous rare earths can increase the stress resistance and tolerance of plants, making them more able to adapt to harsh environmental and climatic conditions, reducing crop mortality, and improving the stability and accuracy of agricultural production.

Improve soil quality
Anhydrous rare earths can improve the physical and chemical properties of soil, promote the growth of soil microorganisms, reduce soil hardening, increase soil permeability and fertility, and provide a better growing environment for crops.

Extend machine life
Anhydrous rare earths can be added to agricultural machinery as lubricants to reduce machine wear, extend the service life of the machine, and reduce farmers' mechanical losses.

Reduce chemical fertilizer use
Anhydrous rare earths can improve soil fertility and the nutrient absorption capacity of plants, reduce the use of chemical fertilizers, and reduce the cost of agricultural production.

Anhydrous rare earth are not that rare
Despite their name, anhydrous rare earth metals aren’t all that rare. Cerium – the most abundant of the anhydrous rare earth metals – is in fact the 25th most abundant element in the world, making it as plentiful as copper. It is followed by lanthanum and neodymium; all three are more abundant than lead. The term ‘rare earth’ was coined in 1788 when a miner in ytterby, sweden, discovered an unusual black rock. The ore was called ‘rare’ as it had never been seen before and ‘earth’ because that was the 18th century geological term for rocks that could be dissolved in acid. Despite being quite plentiful in the earth’s crust, anhydrous rare earth are scattered throughout the world, so it is difficult to find a lot in one place. Although perhaps a more accurate moniker, ‘scattered earths’ doesn’t have quite the same ring to it!

Anhydrous rare earth are superior magnets
In 2021, permanent magnets accounted for the largest share of global anhydrous rare earth consumption. Why? Neodymium anhydrous rare earth magnets are the strongest type of permanent magnets made, enabling high tech gadgets to become smaller, cheaper and lighter while maintaining optimal pull strength. Their superior magnetic quality has allowed designers to improve the efficiency of multiple technologies, such as hybrid and electric vehicles, mobile phones, televisions, computers, wind turbines, loudspeakers, aircraft controls, robots, and factory automation equipment. Ever wonder how manufacturers have been able to shrink your smartphone over the years? You can thank the superior quality of anhydrous rare earth magnets for that.

Anhydrous rare earth helped create colour tv
When it comes to anhydrous rare earth, we really are wearing rose-tinted glasses. For many years, the anhydrous rare earth elements yttrium and europium were used as phosphors to help us see the colour red on tube televisions. Compounds of gadolinium and terbium were used to make yellow-green phosphors. Mixing very small amounts of these anhydrous rare earth elements into the compound served to accentuate the colour on the screen, giving it a vivid quality that was pleasing to the eye.

Anhydrous rare earth are fluorescent crime fighters
Perhaps one of the quirkiest uses of anhydrous rare earth is in crime fighting technologies such as anti-counterfeiting. Anhydrous rare earth compounds dysprosium, europium and terbium are fluorescent under ultraviolet light, making them incredibly useful in the anti-counterfeiting industry. When small amounts of these specific anhydrous rare earth metals are mixed into genuine products, it is easy to identify counterfeit products when illuminated under an ultraviolet light. Not all heroes wear capes…Some wear fluorescent capes.

Chemical method
There are fractional crystallization method, fractional precipitation method and selective redox method. The first two separation methods have been replaced by ion exchange and organic solvent extraction. The selective redox method is based on the fact that some rare earth metals can be oxidized to the +4 valence state (Ce, Pr, Tb) or reduced to the +2 valence state (Sm, Eu, Yb), and their chemical properties are obviously different from those of the +3 valence rare earth metals. difference. The purpose of separation can be achieved by utilizing the different redox potentials of rare earth metals. The oxidation of cerium and the reduction and separation of samarium, europium and ytterbium are still widely used.

Ion exchange method
An effective method for separating high-purity single rare earths. The slight difference in the stability constants of rare earth complexes is used to cause the rare earth ions to undergo an exchange reaction on the resin bed, resulting in an uninterrupted desorption-adsorption process, thereby developing rare earth bands with different enrichment levels in different parts of the resin bed, and finally reaching separate purposes. The mixed rare earth ions are loaded on an ion exchange column equipped with sulfonated polystyrene-divinylbenzene resin, and are eluted with an aminocarboxylic complexing agent. In order to allow the separated rare earth ions to have sufficient exchange times on the resin bed and prevent the rare earth complex ions from quickly passing through the resin bed, delaying ions must be used (it can make the rare earth ions desorbed from the upper end of the rare earth band adsorbed on the resin again ), plays a blocking role to ensure effective separation. Commonly used delaying ions include Cu2+-H+, H+, etc.

Solvent extraction method
It has the characteristics of large scale and continuity, and is an important method for grouping or separating rare earth elements. In certain extraction systems and equipment, rare earth salts undergo multiple contact and redistribution between the organic phase and the aqueous phase to achieve multi-element grouping and single element separation. The extraction agents used include oxygen-containing solvents (ketones, ethers, alcohols, ester compounds), phosphorus (such as tributyl phosphate, di-2-ethylhexyl phosphate), amines (trialkylamine, chlorinated Trialkylamines), carboxylic acids (fatty acids, naphthenic acids) and chelating extractants that can form chelates with metal ions. The extraction equipment used include mixed-clarification extractors, extraction towers and centrifugal extractors.

Packaging and storage method
This storage method is suitable for small particle materials such as anhydrous rare earth powder. After the rare earth is made into powder, it is put into a glass bottle or a plastic bottle, and then sealed with sealant to prevent oxidation and moisture. The advantages of this storage method are simple method, low cost, and easy operation. However, it has certain risks for some active anhydrous rare earth elements such as cerium and lanthanum.

Helium storage method
This storage method is suitable for anhydrous rare earth elements in the elemental state. Pour helium gas into a sealed container, put the rare earth elements into it, and seal it to ensure the purity and stability of the rare earth elements. The advantage of this storage method is that it has good stability and can be stored for a long time, but the cost is relatively high and it is not suitable for large-scale application.

Gadolinium manganese magnet storage method
This storage method is suitable for rare earths in elemental or compound state. After the anhydrous rare earth and gadolinium manganese magnets are evenly mixed, they are sintered under high pressure to form a magnet storage. The advantage of this storage method is that it can store a large amount of anhydrous rare earths in a centralized manner, and it has the advantages of maintaining high purity and good stability of rare earths, but it is also relatively difficult to operate.

Beijing FreeRun Technology Co.,Ltd. was established in 2020. It is located in Shandong Province, an important industrial province in China and one of China's rare earth mineral production areas. Its main products are polishing powder/liquid in semiconductors, optics and other fields, as well as nano rare earths and anhydrous rare earths. , the company integrates rare earth R&D, production and sales.The company's products include high-purity nano rare earth oxides, rare earth polishing powders, precision polishing fluids, rare earth compounds, anhydrous rare earth and other new rare earth materials. The company will provide high-quality products and services in the fields of semiconductor CMP, semiconductor ceramics, aerospace power systems, military guidance, electric vehicles, new energy, petroleum fission, grinding/precision polishing, pharmaceutical chemicals, electronic materials and other fields.