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Zr-Al-Si composite ceramic beads with high wear resistance and high strength and processing technique thereof

A technology of composite ceramics and production technology, applied in the field of grinding media, can solve the problems of a large number of ellipses and attached small beads, bubbles brought in by ceramic beads, and poor roundness of products, achieving significant economic and social effects, less equipment, low cost effect

Inactive Publication Date: 2012-07-25
许兴康
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Electric fusion to liquid state requires high energy consumption, resulting in high cost; when compressed gas is blown, it will cause bubble defects inside the ceramic beads, resulting in poor compactness; the product has poor roundness, with a large number of ellipses and small beads attached. Products with a diameter above Φ3mm cannot be produced
[0007] ④The true density of zirconia ceramic grinding media (the main crystal phase is tetragonal zirconia crystal phase) is: 6.0g / cm 3 , its composition: ZrO 2 : 95%, Y2O 3 : 5%, production process: yttrium stabilized zirconia powder → isostatic pressing or rolling forming → high temperature sintering → polishing → finished product; it is not suitable for grinding machines with medium and low density ceramic grinding media, and the price is expensive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Ingredients: 3 parts of zircon sand, 1 part of zirconia powder, 27 parts of alumina powder, 64 parts of kaolin, 3 parts of magnesia, 2 parts of mixed rare earth, fully mixed evenly;

[0028] The raw material is ball-milled to a particle size of <2 μm by wet ball milling method, and then milled, sprayed and granulated to obtain ultra-fine powder;

[0029] Rolling into beads: Preparation of seed beads: put 100Kg of ultrafine powder into the bead forming machine, add 10Kg of water, stir and mix evenly, and sieve to obtain seed beads with a particle size of 0.1mm; Rolling of beads: Add seed beads to the rolling beading machine. During rolling forming, continuously add materials and water to the rolling beading machine according to the ultrafine powder to water weight ratio of 1:0.2; continuously detect the diameter of the beads during the rolling process, and roll for 5 to 30 hours , to produce ceramic beads with a diameter of Φ0.2~Φ15mm; add water to polish naturally for 1...

Embodiment 2

[0035] Ingredients: 15 parts of zircon sand, 15 parts of zirconia powder, 25 parts of alumina powder, 40 parts of kaolin, 3 parts of MgO, 2 parts of mixed rare earth, fully mixed evenly;

[0036] The raw material is ball-milled to a particle size of <2 μm by wet ball milling method, and then milled, sprayed and granulated to obtain ultra-fine powder;

[0037] Rolling into beads: Preparation of seed beads: Put 100Kg of ultrafine powder into the bead forming machine, add 10Kg of water, stir and mix evenly, and sieve to obtain seed beads with a particle size of 0.1mm; Rolling of beads: Add seed beads to the rolling beading machine. During rolling forming, continuously feed materials into the rolling beading machine according to the weight ratio of ultrafine powder to water: 1:0.2; during the rolling process, continuously detect the diameter of the beads, and roll for 5 to 30 hours. Prepare ceramic beads with a diameter of Φ0.2~Φ15mm; add water and polish naturally for 1~2hr;

[...

Embodiment 3

[0043] Ingredients: 30 parts of zircon sand, 35 parts of zirconia powder, 20 parts of alumina powder, 10 parts of kaolin, 4 parts of MgO, 1 part of mixed rare earth, fully mixed evenly;

[0044] The raw material is ball-milled to a particle size of <2 μm by wet ball milling method, and then milled, sprayed and granulated to obtain ultra-fine powder;

[0045] Rolling into beads: Preparation of seed beads: put 100Kg of ultrafine powder into the bead forming machine, add 10Kg of water, stir and mix evenly, and sieve to obtain seed beads with a particle size of 0.1mm; Rolling of beads: Add seed beads to the rolling beading machine. During rolling forming, continuously feed materials into the rolling beading machine according to the weight ratio of ultrafine powder to water: 1:0.2; continuously detect the diameter of the beads during the rolling process, and roll for 5 to 30 hours. Prepare ceramic beads with a diameter of Φ0.2~Φ15mm; add water and polish naturally for 1~2hr;

[00...

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Abstract

The invention provides a Zr-Al-Si composite ceramic bead with high wear resistance and high strength and a processing technique thereof. The Zr-Al-Si composite ceramic bead comprises the following components by weight percent: 2-65% of ZrO2, 2-60% of Al2O3, 10-50% of SiO2 and 5% of MgO and mischmetal. The production method comprises the following steps: firstly, evenly mixing zircon sand, zirconia, aluminia, magnesia, kaoline and mischmetal, then carrying out ball milling with a wet method, drying to prepare superfine pulverulent body, rolling and molding, sintering at high temperature, and polishing to obtain the Zr-Al-Si composite ceramic beads with high wear resistance and high strength with the diameter being Phi 0.2mm to Phi 15mm. The prepared ceramic bead has flexibly adjusted density, wide application, wear resistance, stable chemical property and simple process and is easy for scale production.

Description

technical field [0001] The invention relates to a high-wear-resistant, high-strength zirconium-aluminum-silicon composite ceramic bead and a production process thereof, belonging to the technical field of grinding media. Background technique [0002] With the rapid development of powder ultra-fine technology, industries such as electronics, papermaking, ceramics, chemicals, paints, inks, and plastics have higher and higher requirements for powder fineness, and some powders even need to reach the nanometer level. After using ultra-fine powder, the performance of the material will be improved. At home and abroad, physical methods are used for ultra-fine grinding of materials. The best and most economical method is wet grinding. In this process, ceramic grinding media of various diameters are indispensable. [0003] At present, there are mainly the following materials for ceramic grinding media: [0004] ①Ordinary ceramic grinding media (the main crystal phase is - alumina,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/48C04B35/10C04B35/14C04B35/622
Inventor 许兴康
Owner 许兴康
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