Background and overview of application examples of holmium carbonate
Holmium carbonate is a rare earth material. Holmium carbonate can be prepared by ammonium bicarbonate precipitation method. In recent years, with the development of new rare earth materials in application technologies in electronics, chemical industry, environmental protection and other related fields, rare earth materials play an indispensable and key role in modern emerging green energy technologies, high-tech environmental protection technologies and national defense and military industry systems.
Application examples of holmium carbonate
Example report on the application of holmium carbonate 1,
CN201210085640.8 reports a method for making holmium acetate crystals, which is characterized by including the following steps: pump analytically pure glacial acetic acid and deionized water into the reaction kettle at a volume ratio of 1:0.5, stir evenly and heat to 50℃; turn the stirring paddle and slowly add the weighed holmium carbonate to the reaction kettle. The molar ratio of the added amount of holmium carbonate to acetic acid is 1:3.3; after complete reaction, heat the liquid to 110℃-125℃ and stop heating. , so that the liquid material in the reaction kettle is naturally cooled and crystallized; when the temperature of the liquid material is cooled to below 50°C, the liquid material is discharged into the filter box and the liquid is filtered out and centrifuged; the dehydrated reactants are allowed to evaporate naturally in a dust-free room. Can. The present invention uses rare earth holmium carbonate to produce holmium acetate tetrahydrofuranate crystals. The process is simple, the production efficiency is high, the energy consumption is low, the production cost is reduced, and the pollution to the environment is reduced; at the same time, the holmium acetate crystal product has high purity, a high total amount of rare earth, and a crystal The particles are coarse and the color is pure, which increases the added value of the product.
Example report on the application of holmium carbonate 2.
CN201710931741.5 reports an endothermic environmentally friendly coating and its preparation method. The endothermic environmentally friendly coating is made of fillers and film-forming materials. The fillers are mixed with the following raw materials in parts by weight: silica 20 to 35 parts, aluminum oxide 8 to 20 parts, titanium oxide 4 to 10 parts, hydrated magnesium aluminate carbonate, zirconium oxide 4 to 10 parts, zinc oxide 1 to 5 parts, magnesium oxide 1 to 5 parts, silicon carbide 0.8 to 5 parts, 0.02 to 0.5 parts of yttrium oxide, 0.01 to 1.5 parts of chromium trioxide, 0.01 to 1.5 parts of kaolin, 0.01 to 1.5 parts of rare earth materials, 0.8 to 5 parts of carbon black, and the particle size of each raw material is 1 to 5 μm; The rare earth materials include 0.01 to 1.5 parts of holmium carbonate, 0.01 to 1.5 parts of erbium sulfate, 0.01 to 1.5 parts of thulium carbonate, 0.01 to 1.5 parts of ytterbium carbonate, and 0.01 to 1.5 parts of lutetium carbonate; the film-forming material is sodium potassium carbonate. The invention has the characteristics of firm coating adhesion and obvious energy-saving effect.
References
[1] [Chinese invention] CN201210085640.8 Method for producing holmium acetate crystal
[2] CN201710931741.5 A heat-absorbing environmentally friendly coating and its preparation method
