Rare earth polishing powder and production method thereof

The technology of a rare earth polishing powder and production method is applied in the direction of polishing compositions containing abrasives, etc., which can solve the problems of uneven roasting temperature, uneven heat transfer of materials, poor product uniformity, etc., and achieve low cost, ideal grain change, The effect of high production efficiency

Active Publication Date: 2011-04-27
INNER MONGOLIA WINNER METALS & CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of the existing rare earth polishing powder production technology is that in the traditional roasting process, due to the uneven roasting temperature, the roasting is carried out under static conditions, the heat transfer of the material is uneven, and the stability of the product is poor.
Non-continuous production leads to uneven hardness of the product and poor product uniformity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A kind of rare earth polishing powder, which is prepared by mixing rare earth carbonate and ammonium salt according to the weight ratio. After drying, crushing and sieving, it is added to a suspension calciner for calcination to produce clinker, which is pulverized by a pulverizer to produce clinker. become.

[0025] Its production method comprises the following steps:

[0026] (1) Compounding material: cerium carbonate and ammonium fluoride are mixed into a compounding material in a ratio of 1.9:0.001 by weight;

[0027] (2) drying, pulverizing and sieving: after drying the mixed material below 400°C, pulverize and pass through a 100-mesh sieve;

[0028] (3) Roasting: Add the sieved mixture to the calciner, and carry out suspension calcining at 800°C to make clinker;

[0029] (4) Jet crushing: the clinker is crushed to 0.1 micron with a jet mill to make a finished product.

Embodiment 2

[0031] A kind of rare earth polishing powder, which is prepared by mixing rare earth carbonate and ammonium salt according to the weight ratio. After drying, crushing and sieving, it is added to a suspension calciner for calcination to produce clinker, which is pulverized by a pulverizer to produce clinker. become.

[0032] Its production method comprises the following steps:

[0033] (1) Compounding material: lanthanum cerium carbonate and ammonium fluoride are mixed into a compounding material in a ratio of 1.9:0.05 by weight;

[0034] (2) drying, pulverizing and sieving: after drying the mixed material below 400°C, pulverize and pass through a 200-mesh sieve;

[0035] (3) Roasting: Add the sieved mixture to the calciner, and carry out suspension calcining at 1000°C to make clinker;

[0036] (4) Jet crushing: the clinker is crushed to 20 microns with a mechanical pulverizer to make a finished product, which is packaged after inspection.

[0037] (5) The finished product o...

Embodiment 3

[0039] A kind of rare earth polishing powder, which is prepared by mixing rare earth carbonate and ammonium salt according to the weight ratio. After drying, crushing and sieving, it is added to a suspension calciner for calcination to produce clinker, which is pulverized by a pulverizer to produce clinker. become.

[0040] Its production method comprises the following steps:

[0041] (1) compounding material: low neodymium rare earth carbonate and ammonium bifluoride are mixed into a compounding material in a ratio of 1.9:0.017 by weight;

[0042] (2) drying, pulverizing and sieving: after drying the mixed material below 400°C, pulverize and pass through a 150-mesh sieve;

[0043] (3) Roasting: Add the sieved mixture to the calciner, and carry out suspension calcining at 850°C to make clinker;

[0044] (4) Airflow crushing: the clinker is crushed to 0.3 micron with a ball mill to make a finished product, which is packaged after inspection.

[0045] (5) The finished product...

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PUM

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Abstract

The invention discloses rare earth polishing powder which is prepared by the following steps: mixing rare earth carbonate and ammonium salt in parts by weight into a compound, drying, pulverizing and screening, then adding into a suspended calciner for calcining to prepare clinker, and pulverizing by a pulverizer. The invention also discloses a production method of the rare earth polishing powder, which comprises the following steps: (1) compounding; (2) drying, pulverizing and screening; (3) calcining; and (4) pulverizing by gas flow. The invention has the advantages that raw materials are calcined in a suspension flowing state, so that heat and mass transfer is kept even, the polishing powder product has ideal and evenly distributed granularity, and the rare earth polishing powder has the advantages of high continuity degree, good product uniformity, high production efficiency, high yield, low cost, high gain and no pollution.

Description

Technical field: [0001] The invention relates to a polishing powder and a production method thereof, in particular to a rare earth polishing powder and a production method thereof. Background technique: [0002] Rare earth polishing powder is widely used in the polishing of LTD, computer chips, liquid crystal displays, flat panel displays, optical lenses, electrical equipment, color TV cathode ray tubes, etc., because of its high polishing efficiency, long service life and wide application range. Become the most popular precision polishing material today. [0003] In recent years, with the rapid development of electronic information technology, the demand for polishing powder is constantly increasing. With the continuous advancement of electronic product technology, the requirements for the fineness of various products are getting higher and higher, and higher requirements are also put forward for rare earth polishing powder, which prompts manufacturers to continuously impr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09G1/02
Inventor 贺建军刘金秀马宝
Owner INNER MONGOLIA WINNER METALS & CHEM
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