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A kind of cerium-based rare earth polishing powder and its preparation method and application

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

Active Publication Date: 2021-12-07
DEMETER SUZHOU ELECTRONICS ENVIRONMENTAL MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A kind of cerium-based rare earth polishing powder and its preparation method and application
  • A kind of cerium-based rare earth polishing powder and its preparation method and application
  • A kind of cerium-based rare earth polishing powder and its preparation method and application

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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 a cerium-based rare earth polishing powder and its preparation method and application. The preparation includes the following steps: using rare earth carbonate and / or fluorinated rare earth carbonate as raw materials, mixing with water, and ball milling in a ball mill until D 50 2.0-2.5μm, release the ball mill slurry, and then roast the ball mill slurry separately at the roasting temperature of 120-150°C, 200-400°C, 420-600°C, 700-1000°C. After the roasting is completed, cool and spray Drying and / or airflow refinement and grading are processed, and the cerium-based rare earth polishing powder produced by this method has fine grains with larger hardness, and improves the distortion energy of the grains, improving the physical and chemical properties of the particles, and then The polishing powder of the present invention can obtain excellent polishing quality and high polishing amount in polishing glass, especially crown glass, flint glass and heavy flint glass, and has short preparation time, convenient operation and good environmental protection.

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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Patent Type & Authority Patents(China)
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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