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Cerium-based rare earth polishing powder and preparation method and application thereof

A rare earth polishing powder, cerium-based technology, applied in grinding/polishing equipment, polishing compositions containing abrasives, manufacturing tools, etc., can solve uneven particle size, unstable grain growth, and insufficient surface polishing and other problems, to achieve the effect of high erosion amount, improved physical and chemical properties, and short process time

Active Publication Date: 2021-03-16
DEMETER SUZHOU ELECTRONICS ENVIRONMENTAL MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing problem in the preparation process of cerium-based rare earth polishing powder is that after the raw materials synthesized by this method are roasted, the grain growth is unstable, and the particle size formed is uneven, which easily leads to scratches and large surface roughness when polishing glass. , and the amount of surface polishing is insufficient

Method used

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  • Cerium-based rare earth polishing powder and preparation method and application thereof
  • Cerium-based rare earth polishing powder and preparation method and application thereof
  • Cerium-based rare earth polishing powder and preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0031] This embodiment provides a preparation method of cerium-based rare earth polishing powder, which includes the following steps: using cerium carbonate as raw material, mixing with water according to a water-to-material ratio of 1:1, and mixing it in a high-energy ball mill (the input energy form is vibration input energy) , the input energy value is 50Hz, the ball-to-material ratio is 10:1, and the diameter of the grinding beads is about 0.5mm). 50 2.2±0.1μm, release the ball mill slurry, and control the solid content to 50% through the increase or decrease of water, then let the ball mill slurry enter the roller kiln, and bake it at 150°C, 300±15°C, 450±15°C ℃ and 850±15℃ for 4.0 hours respectively. After the calcination, use the furnace air to cool to below 200 ℃ or direct water cooling (quenching) after the calcination, and then use spray drying to dry the cooled powder, and then The spray-dried powder is refined and classified by jet mill to obtain the median particl...

Embodiment 2

[0033] The present embodiment provides a preparation method of cerium-based rare earth polishing powder, which comprises the following steps: using fluoride lanthanum cerium carbonate as raw material, mixing with water according to the water-to-material ratio of 1:1, in a high-energy ball mill (the input energy form is Vibration input energy, the input energy value is 50Hz, the ball-to-material ratio is 10:1, and the diameter of the grinding beads is about 0.5mm) for ball milling to D 50 2.2±0.1μm, release the ball mill slurry, and control the solid content to 50% through the increase or decrease of water, then let the ball mill slurry enter the roller kiln, and bake it at 150℃, 375±15℃, 580±15 ℃ and 975±15℃ for 4.0 hours respectively. After the calcination, use the furnace air to cool to below 200 ℃ or direct water cooling (quenching) after the calcination, and then use spray drying to dry the cooled powder, and then The spray-dried powder is refined and classified by jet mil...

Embodiment 3

[0035] The present embodiment provides a preparation method of cerium-based rare earth polishing powder, which comprises the following steps: using lanthanum cerium carbonate as raw material, mixing with water according to the water-to-material ratio of 1:1, in a high-energy ball mill (the input energy form is vibration input Energy, the input energy value is 50Hz, the ball-to-material ratio is 10:1, and the diameter of the grinding beads is about 0.5mm) for ball milling to D 50 2.2±0.1μm, release the ball mill slurry, and control the solid content to 50% through the increase or decrease of water, then let the ball mill slurry enter the roller kiln, and bake it at 150℃, 350±15℃, 450±15 ℃, 875±15℃, after the calcination, use the air cooling with the furnace to below 200 ℃ or direct water cooling (quenching) after the calcination, then use spray drying to dry the cooled powder, and then use jet mill to spray dry The final powder is refined and classified to obtain the median par...

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Abstract

The invention discloses cerium-based rare earth polishing powder and a preparation method and application thereof. The preparation method comprises the following steps that rare earth carbonate and / orfluorinated rare earth carbonate serve / serves as raw materials and is mixed with water, ball milling is conducted in a ball mill till D50 is 2.0-2.5 microns, ball milling slurry is discharged, and the ball-milled slurry is respectively roasted at the roasting temperatures of 120-150 DEG C, 200-400 DEG C, 420-600 DEG C and 700-1000 DEG C, cooling is performed after roasting is finished, and treating is performed by adopting a spray drying and / or airflow refining and grading mode to obtain the cerium-based rare earth polishing powder. According to the cerium-based rare earth polishing powder prepared by the method, fine and hard crystal grains are contained, the distortion energy of the crystal grains is improved, and the physical and chemical properties of the particles are improved, so that the polishing powder can obtain excellent polishing quality and high polishing amount in polished glass, particularly crown glass, flint glass and dense flint glass; the preparation time is short,the operation is convenient, and the environmental protection property is good.

Description

technical field [0001] The invention belongs to the technical field of glass polishing, in particular to the polishing of crown glass, flint glass and heavy flint glass, and in particular to a cerium-based rare earth polishing powder and its preparation method and application. Background technique [0002] At present, cerium-based rare earth polishing powder basically uses cerium oxide as the main polishing component, and cerium oxide and silicate glass have high chemical activity and comparable hardness, so they are widely used in glass, especially crown glass, flint glass, and heavy flint glass. Wait for glass polishing. However, the existing problem in the preparation process of cerium-based rare earth polishing powder is that after the raw materials synthesized by this method are roasted, the grain growth is unstable, and the particle size formed is uneven, which easily leads to scratches and large surface roughness when polishing glass. , and the amount of surface poli...

Claims

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Application Information

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IPC IPC(8): C09G1/02B24B7/17B24B7/24
CPCB24B7/17B24B7/242C09G1/02
Inventor 周利虎李志杰陈向晖
Owner DEMETER SUZHOU ELECTRONICS ENVIRONMENTAL MATERIALS CO LTD
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