Preparation method of micro crystal wearable ceramic ball

A technology of wear-resistant ceramics and ceramic balls, which is applied in the field of grinding media, can solve the problems of poor particle size uniformity of seed balls, large difference in particle size of ceramic balls, and large one-time investment, etc., to achieve less equipment, high density, The effect of less one-time investment

Inactive Publication Date: 2007-09-19
淄博启明星新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The rolling ball forming method in the prior art is generally to extrude the ultrafine powder raw material slurry, cut off and granulate, and then roll forming. The disadvantages are: 1) This method requires many equipment and a large one-time investment; 2. ) This method is complicated to operate, and because the particle size uniformity of the prepared seed balls is not good, the longer the rolling time is, the larger the particle size difference of the ceramic balls is, so that the method is only applicable to the preparation of small particle size ceramic balls, Especially suitable for ceramic balls smaller than 8mm

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] 1) Ingredients: alumina powder 85Kg, kaolin 1Kg, calcium bicarbonate 1Kg talcum powder 1Kg, binder (PVA-99) 0.05Kg;

[0055] 2) According to the prior art, the raw material is ball-milled to a particle size of 1 μm by wet ball milling, and then milled, sprayed and granulated to obtain an ultrafine powder;

[0056] 3) Roll into balls according to the following steps: a. Preparation of seed balls: put 100Kg of ultrafine powder into a ball forming machine, add 10Kg of water, stir and mix evenly, and sieve to obtain seeds with a particle size of 0.1mm. Ball; b. Rolling of balls: add seed balls to the rolling ball machine, when rolling forming, according to the superfine powder and water weight ratio of 1:1, continuously feed into the rolling ball machine; during the rolling process, the formation is continuously detected. The diameter of the ball is rolled for 8-10 hours to produce a ceramic ball with a diameter of 0.5 mm; add water and polish it naturally for 1-2 hours.

...

Embodiment 2

[0067] 1) Ingredients: 90Kg of zirconia powder, 1Kg of yttrium oxide powder, 0.05Kg of binder (PVA-99), mix the raw materials of the above weight evenly and set aside;

[0068] 2) According to the prior art, the raw material is ball-milled to a particle size of 0.5 μm by wet ball milling, and then milled, sprayed and granulated to obtain an ultrafine powder;

[0069] 3) Roll into balls according to the following steps: a. Preparation of seed balls: put 100Kg of ultrafine powder into a ball machine, add 15Kg of water, stir and mix evenly, and sieve to obtain seeds with a particle size of 0.3mm. Ball; b. Rolling of balls: add seed balls to the rolling ball machine, when rolling forming, according to the superfine powder and water weight ratio of 1:1, continuously feed into the rolling ball machine; during the rolling process, the formation is continuously detected. The diameter of the ball is rolled for 30-35 hours to produce a ceramic ball with a diameter of 50mm; add water and...

Embodiment 3-8

[0079] The batching process is carried out according to Table 1, 2, and others are the same as in Example 1.

[0080] raw material name

[0081] raw material name

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PUM

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Abstract

A preparing method for a crystallite wear-resistant ceramic ball belongs to a technical field of abrasive media, which is characterized in that: firstly preparing a superfine material adopting wet ball milling, spraying and prilling; then rolling moulding; finally the crystallite wear-resistant ceramic ball with a diameter of 0.5-50mm after drying, firing and polishing. The inventive method has lots of advantages such as little equipment, low cost, large output and easy expansion; meanwhile, the ceramic ball is high-density, wear-resistant and stable.

Description

technical field [0001] The invention belongs to the technical field of grinding media, and in particular relates to a high alumina or zircon ceramic ball and a preparation method thereof. Background technique [0002] Because of its high strength, high hardness, wear resistance and corrosion resistance, ceramic balls are widely used as grinding media in ceramics, electronics, building materials, new materials and other fields. Ceramic balls in the prior art are usually made by isostatic pressing, for example: "Materials Herald" in October 2000, the 14th volume album, Jia Guangyao, Zhang Weiru, etc. "Development of Low-Cost Zirconia Grinding Balls" discloses a The preparation method of the grinding medium is to prepare ultra-fine powder by wet ball milling and spray granulation, then adopt cold isostatic pressing under the pressure of 0.1-0.16GPa to form, and finally prepare zirconia grinding balls through high-temperature firing. The disclosed content quoted here. [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/622C04B35/634C04B35/64C04B35/10C04B35/12C04B35/48
Inventor 张合军
Owner 淄博启明星新材料股份有限公司
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