What's the use of rare earth? Why Japan wants to buy Chinese rare earth?
Rare earth ferrosilicon alloy, rare earth silicon magnesium alloy as spheroidizing agent in the production of rare earth nodular cast iron, ductile cast iron, because this is particularly suitable for the production of the special requirements of the complex ductile iron, are widely used in automobile, tractor, diesel engine and other mechanical manufacturing; rare earth metals added to magnesium, aluminum, copper, zinc, nickel, etc. non-ferrous alloys, physical and chemical properties of the alloys can be improved, and improve the mechanical properties of alloy at room temperature and high temperature. Made of rare earth molecular sieve catalyst in petroleum chemical industry, has the advantages of high activity, good selectivity and strong resistance to heavy metal poisoning, which replaces the aluminum silicate catalyst used in petroleum catalytic cracking process; in ammonia production process, with a small amount of rare earth nitrate as catalyst, its treatment capacity than Ni Al catalyst 1.5 times; in cis-1,4-polybutadiene rubber and isoprene rubber in the process of using naphthenic acid rare earth aluminum products three kinds of catalyst, the obtained performance is excellent, with less equipment fubberized, stable operation, postprocessing the advantages of short process; composite rare earth oxides can also be used as an internal combustion engine exhaust purification catalysts, cerium naphthenate also can be used as paint drying agent.
In the military aspects of rare earth industry "gold", because of its excellent photoelectric magnetic and other physical properties, and other materials composed of new materials, the performance of different varieties, the most obvious function is to greatly improve the quality and performance of other products. For example, the tactical performance of steels, aluminum alloys, magnesium alloys and titanium alloys for tanks, aircraft and missiles has been greatly improved.
In the aspect of glass ceramics with rare earth oxide or rare earth concentrate after processing, can be used as a polishing powder is widely used in polishing of optical glass, glass sheet, tube, tube, plate glass, plastic and metal tableware; in the glass melting process, using two cerium oxide has very strong oxidation of iron. Reduce the content of iron in glass, in order to achieve the purpose of removing the green glass; rare earth oxides can be made of optical glass and special glass for different purposes, including through infrared, ultraviolet absorbing glass, acid resistant and heat-resistant glass, - X- - ray glass; rare earth in ceramic glaze and glaze. Fragmentation can reduce the glaze, and can make the products show different color and luster, is widely used in ceramic industry. In terms of new material of rare earth cobalt and neodymium iron boron permanent magnetic material, with high remanence, high coercivity and high energy product, is widely used in electronic and aerospace industries; pure rare earth oxides and iron oxide into combinations of garnet single crystal and polycrystal, can be used in microwave and electronic industry;
Rare earth is also the electronic, laser, nuclear, superconducting and many other high-tech lubricants. Once used in military affairs, rare earth technology will inevitably bring about a leap in military technology. In a sense, the US military's partial wars in the cold war, the backward sex control, and the unbridled and open killing of the enemy are due to the superman in the field of rare earth science and technology. In the metallurgical industry, rare earth metals or fluorides and silicides can be added to steel to play the role of refining, desulfurization, neutralization and low melting point harmful impurities, and can improve the processing performance of steel;
