A kind of preparation method of polishing powder for emerald polishing

A technology for polishing powder and emerald, which is applied in the field of emerald polishing, can solve the problem that the wear resistance cannot meet the requirements of emerald polishing, and achieves the effects of good polishing effect, low production cost and easy control of conditions.

Inactive Publication Date: 2017-12-26
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. It contains 0.5 to 3 parts of dichromium trioxide and 1.0 Part of aluminum oxide, but the wear resistance of this composite polishing powder can not reach the polishing requirements of jade; Chinese patent CN103923569B discloses a kind of preparation method of jadeite polishing powder, which is characterized in that the mass percent Add 12%~26% cerium chloride, 20%~32% zirconium oxychloride in water, then add 15%~30% aluminum oxide, 8%~15% silicon nitride, 2%~ 6% chromium trioxide, 0.5% ~ 3% dispersant,

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Preparation of liquid A: In the reactor, add deionized water: 52mL, sodium pyrophosphate: 2.0g, stir and dissolve, add nano boron nitride: 12g, chromium trioxide: 34g, stir for 1h , to prepare liquid A;

[0025] (2) Preparation of liquid B: In the reactor, add deionized water: 60mL, water-soluble cerium salt: 36g, ferric chloride: 4g, stir and dissolve to prepare liquid B;

[0026] (3) Preparation of the complex: In the reactor, add liquid A: 42mL, liquid B: 42mL, stir, ammonia water: 8mL, then add 30% hydrogen peroxide: 8mL, react for 7h, separate solid and liquid, wash with water until medium Properties, after the solid is dried at 110°C, it is roasted at 950°C for 4 hours, and after cooling, it is pulverized by airflow to obtain a composite with a particle size of 1.0-5.0 μm;

[0027] (4) Preparation of gemstone polishing powder: in the grinding machine, add respectively, beryllium oxide: 5g, compound: 88g, talcum powder: 7g, turn on the grinding machine, with t...

Embodiment 2

[0029] (1) Preparation of liquid A: In the reactor, add deionized water: 56mL, tannic acid: 1.0g, stir and dissolve, add nano boron nitride: 10g, chromium trioxide: 33g, stir for 1h , to prepare liquid A;

[0030] (2) Preparation of liquid B: In the reactor, add deionized water: 56mL, water-soluble cerium salt: 38g, ferric chloride: 6g, stir and dissolve to prepare liquid B;

[0031] (3) Preparation of the complex: In the reactor, add liquid A: 38mL, liquid B: 40mL, stir, ammonia water: 10mL, then add 30% hydrogen peroxide: 12mL, react for 6h, separate solid and liquid, wash with water until medium Properties, after the solid is dried at 110°C, it is roasted at 950°C for 4 hours, and after cooling, it is pulverized by airflow to obtain a composite with a particle size of 1.0-5.0 μm;

[0032] (4) Preparation of gemstone polishing powder: in the grinder, add respectively, beryllium oxide: 2g, compound: 92g, talcum powder: 6g, turn on the grinder, and grind for 60min at a speed ...

Embodiment 3

[0034] (1) Preparation of liquid A: In the reactor, add deionized water: 48mL, oleic acid: 1.0g, stir and dissolve, add nano boron nitride: 15g, chromium trioxide: 38g, stir for 1h, Prepare A liquid;

[0035] (2) Preparation of liquid B: In the reactor, add deionized water: 58mL, water-soluble cerium salt: 37g, ferric chloride: 5g, stir and dissolve to prepare liquid B;

[0036] (3) Preparation of the complex: In the reactor, add liquid A: 46mL, liquid B: 38mL, stir, ammonia water: 6mL, then add 30% hydrogen peroxide: 10mL, react for 8h, separate solid and liquid, wash to medium Properties, after the solid is dried at 110°C, it is roasted at 950°C for 4 hours, and after cooling, it is pulverized by airflow to obtain a composite with a particle size of 1.0-5.0 μm;

[0037] (4) Preparation of gemstone polishing powder: in the grinding machine, add respectively, beryllium oxide: 8g, compound: 87g, talcum powder: 5g, open the grinding machine, with the speed of 500 rpm, grind for 1...

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Abstract

The invention discloses a method for preparing polishing powder for emerald polishing, which is characterized in that the method has the following process steps: in the reactor, add according to the following composition mass percentage concentration, beryllium oxide: 2-8% , compound: 86-92%, talcum powder: 5-10%, the sum of each component is 100%, turn on the grinder, grind for 60-100min at a speed of 500 rpm, and obtain agate polishing powder, polishing powder The particle size is 1.0-5.0 μm, and the composite is a composite containing boron nitride, chromium oxide, cerium oxide, and iron oxide. The preparation process is simple, the conditions are easy to control, the production cost is low, and the industrial production is easy. In the polishing process, it has good powder polishing effect, high gloss, no scratches, high flatness, and less powder consumption.

Description

technical field [0001] The invention relates to the technical field of preparation of polishing powder, in particular to a preparation process of polishing powder for emerald polishing and its use in emerald polishing. Background technique [0002] Emerald is a beryllium-aluminosilicate mineral. The chemical composition of emerald is Be 3 Al 2 [Si 6 o 18 ], which contains beryllium oxide (BeO) 14.1%, aluminum oxide (Al 2 o 3 )19%, silicon oxide (SiO 2 )66.9%. The crystal belongs to the hexagonal ring structure silicate mineral. The crystals are often in the form of hexagonal columns with vertical lines on the surface of the cylinders. The aggregates are sometimes in the form of crystal clusters or needles, and sometimes they can form pegmatites. Most of them are light green. When the composition is rich in cesium, it is pink. It is called rose emerald. When it contains chromium, it is bright emerald green, called grandmother; when it contains divalent iron, it is li...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/14
CPCC09G1/02
Inventor 李慧芝陈亚明李志英
Owner UNIV OF JINAN
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