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What is dysprosium oxide?
is a chemical substance with the chemical formula Dy2O3. White powder, slightly hygroscopic, easily absorbs carbon dioxide when exposed to the air and turns into dysprosium carbonate. Magnetism is many times stronger than high iron oxide. Soluble in acid and ethanol. Mainly used for lighting sources.
What is the effect of dysprosium oxide?
It is used as the raw material for the preparation of dysprosium metal, as an additive for glass and neodymium iron boron permanent magnets. It is also used in metal halide lamps, magneto-optical memory materials, yttrium iron or yttrium aluminum garnet, and atomic energy industries. Dysprosium oxide can also be used as an additive for neodymium-iron-boron permanent magnets. Adding about 2 to 3% of dysprosium to this magnet can increase its coercivity. In the past, the demand for dysprosium was not large, but with NdFeB With the increase in demand for magnets, it has become a necessary additional element, and the grade must be around 95-99.9%, and the demand is also increasing rapidly. Dysprosium oxide is also used as a raw material for preparing dysprosium metal, as an additive for glass, neodymium iron boron permanent magnets, and also used in metal halide lamps, magneto-optical memory materials, yttrium iron or yttrium aluminum garnet, and atomic energy industries.
Introduction to Europium Oxide
is a pale red powder. The relative density is 7.42. The melting point is 2002 degrees. Insoluble in water, soluble in acid. It can absorb carbon dioxide and water in the air.
How to make europium oxide
Extraction method: Take the rare earth chloride solution obtained by processing monazite or mixed rare earth ore as raw material. Extraction with P204-kerosene-HCL-ReCl3 system, the first grouping of neodymium and samarium, the raffinate is used to extract light rare earth, samarium and heavy rare earth are extracted into the organic phase, and then the middle rare earth are back-extracted with 2.0mg/L HCl to obtain a medium After the rare earth samarium enrichment is reduced by zinc powder, europium is extracted by the alkalinity method and then precipitated with oxalic acid, separated, dried, and burned to obtain europium oxide.
Is europium oxide toxic?
The salt of rare earth elements can reduce the content of prothrombin, make it inactivated, and inhibit the production of thrombin, precipitate fibrinogen, and catalyze the decomposition of phosphoric acid compounds. The toxicity of rare earth elements decreases as the atomic weight increases. You need to wear a gas mask when you work. If there is radioactivity, special protection should be carried out. The dust should be prevented from scattering.
Storage of Europium Oxide and Dysprosium Oxide
It should be stored in a dry, cool and sealed environment, and not exposed to the air. In addition, heavy pressure should be avoided and transported as ordinary items.
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