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A method for preparing ultrafine uniform dysprosium oxide

A uniform technology of dysprosium oxide, applied in the fields of chemical instruments and methods, inorganic chemistry, rare earth metal compounds, etc., can solve the problems of no in-depth research, large particle size of dysprosium oxide, etc., and achieve simple preparation process and stable specific surface area Effect

Active Publication Date: 2017-03-08
CHANGZHOU GEOQUIN NANO NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dysprosium oxide product prepared by this preparation method has a large particle size, and the ultrafine dysprosium oxide with a particle size of 0.2-0.45 μm plays a great role in inhibiting oxygen vacancies and their migration in nickel electrode ceramic capacitors, but currently for 0.2-0.45 There is no in-depth research on the preparation method of dysprosium oxide with μm ultrafine particle size

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1: Weigh 1kg of dysprosium oxide powder, add it to the reactor, stir evenly with 2.5kg of pure water, add 20g of polyethylene glycol 4000, stir again for 0.5 hours and then completely infiltrate to obtain an infiltrated mixture. Put 15kg of 0.3mm zirconium beads into the grinder, and then pour the infiltrated mixture into the high-energy grinder. The grinding time is 45 minutes. After grinding, a uniformly dispersed slurry is obtained. The uniformly dispersed slurry is placed in a bucket container Inside, connect one end of the peristaltic pump to the barrel container, and connect the other end of the peristaltic pump to the dryer, spray the slurry into the dryer in a mist form through the peristaltic pump, the sprayed slurry is dried in the dryer, and the dryer is set The nozzle speed frequency reading is 50Hz, the inlet temperature is set to 330℃, and the outlet temperature is 100℃. Dysprosium oxide powder is collected after being dried by a dryer. After testing...

Embodiment 2

[0016] Example 2: Weigh 1.5 kg of dysprosium oxide powder, add it to the reactor, stir with 3 kg of pure water, add 20 g of polyethylene glycol 20000, stir again for 0.5 hours and then completely infiltrate to obtain an infiltrated mixture. Put 18kg of 0.3mm zirconium beads into the high-energy grinder, and then pour the infiltrated mixture into the high-energy grinder. The grinding time is 50 minutes. After grinding, a uniformly dispersed slurry is obtained. The uniformly dispersed slurry is placed in the bucket In the container, connect one end of the peristaltic pump to the barrel container, and the other end of the peristaltic pump to the dryer. The speed of the peristaltic pump is 45g / min. The slurry is sprayed into the dryer in mist through the peristaltic pump, and the sprayed slurry is Drying in the dryer, the nozzle speed frequency reading set by the dryer is 50Hz, the inlet temperature is set to 330℃, and the outlet temperature is 100℃. Dysprosium oxide powder is colle...

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PUM

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Abstract

The invention discloses a method for preparing ultrathin and uniform dysprosium oxide, and relates to the technical field of chemical product preparation. The method includes the specific steps of weighing dysprosium oxide powder, placing the dysprosium oxide powder in a reaction kettle, adding pure water, conducting mixing and even mixing, adding non-ionic surface active agents, conducting stirring at a constant speed so as to obtain a completely-infiltrated mixture, adding zirconium balls in a high-energy grinding machine, adding the infiltrated mixture into the grinding machine, conducting grinding to obtain slurry uniform in dispersity, making a material barrel container contain the evenly-dispersed slurry, connecting one end of a peristaltic pump to the material barrel container, connecting the other end of the peristaltic pump to a drying machine, spraying the slurry into the drying machine in the form of mist through the peristaltic pump, drying the sprayed slurry in the drying machine, and collecting a dried product, namely, ultrathin-particle dysprosium oxide, from the drying machine. The preparation process of dysprosium oxide is simple, the prepared dysprosium oxide is more stable in specific area, and the method can be used for large-scale production.

Description

[0001] Technical field: [0002] The invention relates to a method for preparing ultrafine uniform dysprosium oxide, and belongs to the technical field of preparation of chemical products. [0003] Background technique: [0004] Dysprosium oxide is a raw material for preparing metal dysprosium, glass, and an additive for neodymium iron boron permanent magnets. Dysprosium oxide is also used in metal halide lamps, magneto-optical memory materials, yttrium iron or yttrium aluminum garnet, and nuclear power reactors in the nuclear power industry. Control stick. With the development of science and technology, the demand for dysprosium oxide is increasing. In high-end ceramic capacitors, the use of nano-dysprosium oxide particles can significantly improve the performance of the product, but the existing nano-scale particles are not uniform enough and the dispersion is insufficient. In addition, the price of nanometer dysprosium oxide is much higher. However, using traditional production ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01F17/00
Inventor 王鹭
Owner CHANGZHOU GEOQUIN NANO NEW MATERIALS