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Preparation method of jade polishing powder

A technique for polishing powder and jadeite, which is applied in chemical instruments and methods, polishing compositions containing abrasives, and other chemical processes, can solve the problems that the wear resistance cannot meet the polishing requirements of jadeite, achieve good polishing effect, and produce The effect of low cost and narrow particle size distribution range

Inactive Publication Date: 2015-07-08
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compounding of several oxides can overcome the above-mentioned deficiencies. Chinese patent application CN101362925B discloses a compound polishing powder for polishing optical elements and its preparation method and polishing process. There are 0.5 to 3 parts of dichromium trioxide and 1.0 It is composed of aluminum oxide, but the wear resistance of this composite polishing powder cannot meet the polishing requirements of emerald.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of preparation method of jade emerald polishing powder, in reactor, add the cerium chloride of 20g respectively, 26g zirconium oxychloride is dissolved in water, then add the Al2O3 of 20g, the silicon nitride of 10g, the trioxide of 3g Dichrome, 1.0g dispersant agent, stir to form a slurry, then dissolve 20g of ammonium oxalate in water and add, under normal pressure, stir, add heat at 85°C, react for 32h, so that cerium chloride produces uniform cerium oxalate, chlorine Zirconia produces uniform zirconia particles, separated from solid and liquid, evaporated to dryness, then raised the temperature to 120°C, reacted for 3 hours, roasted at 950°C for 3 hours, cooled, and crushed by airflow to obtain jade polishing powder .

Embodiment 2

[0029] A kind of preparation method of jade emerald polishing powder, in reactor, add respectively the cerium chloride of 400g, the 520g zirconium oxychloride is dissolved in water, then adds the aluminum oxide of 400g, the silicon nitride of 200g, the trioxide of 60g Chromium, 20g dispersant agent, stir to form a slurry, then dissolve 400g ammonium oxalate in water and add, under normal pressure, stir, add heat at 85°C, react for 32h, make cerium chloride produce uniform cerium oxalate, and oxidize chlorine Zirconium produces uniform zirconia particles, separated from solid and liquid, evaporated to dryness, then raised the temperature to 120°C, reacted for 3 hours, roasted at 1000°C for 3 hours, cooled, and crushed by airflow to obtain jadeite polishing powder.

Embodiment 3

[0031]A kind of preparation method of jade emerald polishing powder, in reactor, add the cerium chloride of 15g respectively, 32g zirconium oxychloride is dissolved in water, then add the aluminum oxide of 15g, the silicon nitride of 8g, the trioxide of 2g Dichromium, 0.5g dispersant agent, stir to form a slurry, then dissolve 28g of ammonium oxalate in water and add, under normal pressure, stir, add heat at 85°C, react for 30h, so that cerium chloride produces uniform cerium oxalate, chlorine Zirconia produces uniform zirconia particles, separated from solid and liquid, evaporated to dryness, then raised the temperature to 120°C, reacted for 2 hours, roasted at 950°C for 4 hours, and after cooling, crushed by air flow to obtain jadeite polishing powder .

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PUM

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Abstract

The invention discloses a preparation method of jade polishing powder. The method is characterized by comprising the steps of feeding 12-26% of cerium chloride and 20-32% of zirconium oxychloride into a reactor according to the mass percent concentration, and dissolving the mixture in water; then, feeding 15-30% of aluminium oxide, 8-15% of silicon nitride, 2-6% of chromic oxide and 0.5-3% of dispersing agent into the water solution, and stirring to obtain slurry; dissolving 15-30% of ammonium oxalate into water, and then feeding the product into the slurry, wherein the sum of the content of all the components except water of the slurry is 100%; stirring under the normal pressure, heating up to 85 DEG C, and carrying out a reaction for 30-36h; then, heating up to 120 DEG C, and carrying out the reaction for 2-4h; carrying out calcination for 2-4h at the temperature of 950-1000 DEG C, cooling and crushing by airflow to obtain the jade polishing powder. The preparation technology is simple, easy in control of conditions, low in production cost and easy in industrial production. When being used for the polishing process, the polishing powder is good in powder polishing effect, high in glossiness, free from scratch, high in flatness and less in power dosage.

Description

technical field [0001] The invention relates to the technical field of preparation of polishing powder, in particular to a preparation process of jadeite polishing powder and its use in polishing jadeite. Background technique [0002] In the second half of the 19th century, French mineralogist De Moore divided Chinese "jade" into two categories: nephrite and jadeite. Jadeite, commonly known as "Jadeite" in my country, is a rising star among traditional jade in China and the top grade among all modern jade. Whether it is "mountain material" (primary ore) or "seed material" (secondary ore), jadeite is mainly a dense block composed of jadeite minerals. Observed under a microscope, the jadeite minerals that make up jadeite are tightly intertwined to form the fibrous structure of jadeite. This tight fibrous structure makes jadeite delicate and tough. Jadeite is a silicate mineral composed of steel and aluminum and is colorless or white in its pure form. The chemical compositi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09G1/02C09K3/14
Inventor 李慧芝许崇娟陈亚明
Owner UNIV OF JINAN
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