CN101037337A - Preparation method of micro crystal wearable ceramic ball - Google Patents
Preparation method of micro crystal wearable ceramic ball Download PDFInfo
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- CN101037337A CN101037337A CN 200710014580 CN200710014580A CN101037337A CN 101037337 A CN101037337 A CN 101037337A CN 200710014580 CN200710014580 CN 200710014580 CN 200710014580 A CN200710014580 A CN 200710014580A CN 101037337 A CN101037337 A CN 101037337A
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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
The invention belongs to the grinding medium technical field, be specifically related to the Ceramic Balls and the method for making thereof of a kind of high alumina matter or zircon stone.
Background technology
Ceramic Balls has high strength, high rigidity, wear-resisting, corrosion resistant characteristic because of it, the existing fields such as pottery, electronics, building materials, novel material that are widely used in as grinding medium.The Ceramic Balls of prior art adopts the mode of isostatic pressing to make usually, for example: " material Leader " October in 2000 the 14th volume special edition merchant shine, method for making that Zhang Weiru etc. " development of low cost zirconium oxide mill ball " discloses a kind of grinding medium, adopt wet ball grinding and mist projection granulating to prepare superfine powder, under 0.1～0.16GPa pressure, adopt cold isostatic compaction then, burn till preparation zirconium oxide abrasive ball through high temperature at last, its disclosed content quotation is in this.
Roller forming method of the prior art generally is that the superfine powder raw slurry is extruded the cut-out granulation, the moulding of rolling then, and the shortcoming of its existence is: 1) equipment of these method needs is many, disposable having high input; 2) this method complicated operation, and, cause rolling time long more because the kind spherolite footpath homogeneity that makes is not good, the particle diameter difference of Ceramic Balls is big more, thereby makes present method only be applicable to the preparation of small particle size Ceramic Balls, is specially adapted to the Ceramic Balls less than 8mm.
Summary of the invention
The present invention is directed to problems of the prior art, a kind of method for making of micro crystal wearable ceramic ball is provided, comprise the rolling balling operation, adopt the production of hybrid seeds ball that sieves, then behind the rolling balling through oven dry, burn till, operation such as polishing makes the Ceramic Balls that is used for grinding medium; Another object of the present invention is, adopts method of the present invention, and density is big, hardness is high to have prepared two kinds, the high alumina matter that wear resistance is good and the Ceramic Balls of zircon stone.
The present invention is concrete to adopt following technical scheme to realize:
A kind of method for making of micro crystal wearable ceramic ball is characterized in that, adopts the method for rolling balling to prepare the micro crystal wearable ceramic ball that particle diameter is 0.5-50mm in essence.
The method for making of described micro crystal wearable ceramic ball is characterized in that, comprises the steps:
1) batching;
2) dress mill, it is 0.5-2 μ m that raw material ball is milled to granularity;
3) go out mill, mist projection granulating makes superfine powder;
4) rolling balling;
5) oven dry;
6) burn till;
7) polishing makes described micro crystal wearable ceramic ball.
Described rolling balling operation comprises the steps:
1) preparation of kind ball: the superfine powder of 100 weight parts is put into nodulizer, add the water of 10～15 weight parts, mix, sieve, making particle diameter is the kind ball of 0.1～0.3mm;
2) rolling of ball: in the rolling balling machine, add kind of a ball, during the rolling moulding, according to superfine powder and 1: 1 continuous charging in the rolling balling machine of water weight ratio; Reinforced speed particle diameter general and Ceramic Balls is proportional, and promptly along with the increase of Ceramic Balls particle diameter, reinforced, amount of water will increase in right amount.
3) polishing: after Ceramic Balls is rolled to specified dimension, adds water and polish 1～2h naturally.
Described firing process carries out according to following sintering curve:
Normal temperature～300 ℃ 50 ℃/h
300～1200℃ 70～80℃/h
1200 ℃ are incubated 1～2 hour
1200～1450℃ 80～90℃/h
1450 ℃ are incubated 2～3 hours
Naturally be cooled to 300 ℃, kiln discharge.
Described burden process is that the following materials based on weight powder mixes is even:
85～95 parts of aluminum oxide powders
1～10 part of kaolin
1 part of Calcium hydrogen carbonate
1～3 part of talcum powder
0.05～0.1 part in tackiness agent.
Described tackiness agent is the commodity that name is called PVA-99.
According to the micro crystal wearable ceramic ball that above-mentioned proportioning process makes, form by following components in weight percentage:
Al
2O
3 92-99％
SiO
2 0.1-6％
MgO 0.8-1.8％
CaO 0.1-0.2％。
The micro crystal wearable ceramic ball physico-chemical property of said components is: density 〉=3.6g/cm
3Grain size is 1.0-1.5 μ m; Abrasion≤0.1g/Kg.h; Mohs' hardness 〉=9; Water-intake rate≤0.02%.
Described burden process is that the following materials based on weight powder mixes is even:
90～98 parts of zirconia powders
1～10 part in yttrium oxide powder
0.05～0.1 part in tackiness agent.
Described tackiness agent is the commodity that name is called PVA-99.
Form by following components in weight percentage according to the micro crystal wearable ceramic ball that above-mentioned proportioning process makes:
CrO
2 94-96％
YO
2 3-5％
Al
2O
3 0.3-1％。
Said components micro crystal wearable ceramic ball physico-chemical property is: density 〉=6g/cm
3Grain size is 0.3-0.5 μ m; Abrasion≤0.01g/Kg.h; H hardness 〉=1250; Crushing strength 〉=15KN.
The beneficial effect that the present invention had is:
1) compare with the forming method of prior art, technology of the present invention is simple, and the equipment that needs is few, one-time investment is few, and output is expanded production greatly and easily;
2) the method scope of application of the present invention is big, can be used in the production that particle diameter is the Ceramic Balls of 0.5～50mm;
3) the Ceramic Balls density that makes of the present invention is big, wear-resisting, and chemical property is stable;
Embodiment
Embodiment 1
1) batching: aluminum oxide powder 85Kg, kaolin 1Kg, Calcium hydrogen carbonate 1Kg talcum powder 1Kg, tackiness agent (PVA-99) 0.05Kg;
2) according to prior art, with the method for wet ball grinding raw material ball being milled to granularity is 1 μ m, goes out mill, and mist projection granulating makes superfine powder;
3) according to the following step rolling balling: the preparation of a. kind ball: the superfine powder of 100Kg is put into nodulizer, add the water of 10Kg, mix, sieve, making particle diameter is the kind ball of 0.1mm; B. the rolling of ball: in the rolling balling machine, add kind of a ball, during the rolling moulding, according to superfine powder and 1: 1 continuous charging in the rolling balling machine of water weight ratio; Constantly detect the diameter of balling-up in the rolling process, the 8～10h that rolls just makes the Ceramic Balls that diameter is 0.5mm; Add water and polish 1～2h naturally.
5) oven dry: under field conditions (factors) that the Ceramic Balls of polishing is air-dry;
6) firing process, carry out according to following sintering curve: the speed of 50 ℃/h rises to 300 ℃ from normal temperature in the kiln, is warming up to 1200 ℃ with 80 ℃/h then, is incubated 1 hour; Be warming up to 1450 ℃ with 90 ℃/h then, be incubated after 2 hours, be cooled to 300 ℃ naturally, kiln discharge.
7) polishing makes described micro crystal wearable ceramic ball.
According to the method described above, the Ceramic Balls that makes, form by following components in weight percentage:
Al
2O
3 92-99％
SiO
2 0.1-6％
MgO 0.8-1.8％
CaO 0.1-0.2％。
Its physico-chemical property is: density 〉=3.6g/cm
3Grain size is 1.0-1.5 μ m; Abrasion≤0.1g/Kg.h; Mohs' hardness 〉=9; Water-intake rate≤0.02%.
Embodiment 2
1) batching: zirconia powder 90Kg, yttrium oxide powder 1Kg, tackiness agent (PVA-99) 0.05Kg mixes the raw material of above-mentioned weight standby;
2) according to prior art, with the method for wet ball grinding raw material ball being milled to granularity is 0.5 μ m, goes out mill, and mist projection granulating makes superfine powder;
3) according to the following step rolling balling: the preparation of a. kind ball: the superfine powder of 100Kg is put into nodulizer, add the water of 15Kg, mix, sieve, making particle diameter is the kind ball of 0.3mm; B. the rolling of ball: in the rolling balling machine, add kind of a ball, during the rolling moulding, according to superfine powder and 1: 1 continuous charging in the rolling balling machine of water weight ratio; Constantly detect the diameter of balling-up in the rolling process, the 30～35h that rolls makes the Ceramic Balls that diameter is 50mm; Add water and polish 1～2h naturally.
5) oven dry: air-dry under field conditions (factors);
6) firing process, carry out according to following sintering curve: the speed of 50 ℃/h rises to 300 ℃ from normal temperature in the kiln, is warming up to 1200 ℃ with 80 ℃/h then, is incubated 1 hour; Be warming up to 1450 ℃ with 90 ℃/h then, be incubated after 2 hours, be cooled to 300 ℃ naturally, kiln discharge.
7) polishing makes described micro crystal wearable ceramic ball.
According to the method described above, the Ceramic Balls that makes, form by following components in weight percentage:
CrO
2 94-96％
YO
2 3-5％
Al
2O
3 0.3-1％。
Above-mentioned micro crystal wearable ceramic ball physico-chemical property is: density 〉=6g/cm
3Grain size is 0.3-0.5 μ m; Abrasion≤0.01g/Kg.h; H hardness 〉=1250; Crushing strength 〉=15KN.
Embodiment 3-8
Burden process carries out according to table 1,2, and other are with embodiment 1.
Table 1 embodiment 3-5 allocation sheet
| Material name | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| Aluminum oxide powder, Kg | 95 | 90 | 88 |
| Kaolin, Kg | 3 | 6 | 8 |
| Calcium hydrogen carbonate, Kg | 1 | 1 | 1 |
| Talcum powder, Kg | 1 | 2 | 3 |
| PVA-99，Kg | 0.06 | 0.07 | 0.1 |
Table 2 embodiment 6-8 allocation sheet
| Material name | Embodiment 6 | Embodiment 7 | Embodiment 8 |
| Zirconia powder, Kg | 90 | 95 | 98 |
| The yttrium oxide powder, Kg | 3 | 5 | 8 |
| PVA-99，Kg | 0.06 | 0.08 | 0.1 |
The above embodiments of the present invention are can not limit the present invention to explanation of the present invention, in implication suitable with claims of the present invention and any change and the combination in the scope, all should think in the scope of claims.
Claims (9)
1. the method for making of a micro crystal wearable ceramic ball is characterized in that, adopts the method for rolling balling to prepare the micro crystal wearable ceramic ball that particle diameter is 0.5-50mm in essence.
2. the method for making of micro crystal wearable ceramic ball according to claim 1 is characterized in that, comprises the steps:
1) batching;
2) dress mill, it is 0.5-2 μ m that raw material ball is milled to granularity;
3) go out mill, mist projection granulating makes superfine powder;
4) rolling balling;
5) oven dry;
6) burn till;
7) polishing makes described micro crystal wearable ceramic ball.
3. the method for making of micro crystal wearable ceramic ball according to claim 2 is characterized in that, the rolling balling operation comprises the steps:
1) preparation of kind ball: the superfine powder of 100 weight parts is put into nodulizer, add the water of 10～15 weight parts, mix, sieve, making particle diameter is the kind ball of 0.1～0.3mm;
2) rolling of ball: in the rolling balling machine, add kind of a ball, during the rolling moulding, according to superfine powder and 1: 1 continuous charging in the rolling balling machine of water weight ratio;
3) polishing: after Ceramic Balls is rolled to specified dimension, adds water and polish 1～2h naturally.
4. the method for making of micro crystal wearable ceramic ball according to claim 3 is characterized in that rolling time is 8～35h.
5. the method for making of micro crystal wearable ceramic ball according to claim 2 is characterized in that, burden process is that the following materials based on weight powder mixes is even:
85～95 parts of aluminum oxide powders
1～10 part of kaolin
1 part of Calcium hydrogen carbonate
1～3 part of talcum powder
0.05～0.1 part in tackiness agent.
6. the method for making of micro crystal wearable ceramic ball according to claim 2 is characterized in that, burden process is that the following materials based on weight powder mixes is even:
90～98 parts of zirconia powders
1～10 part in yttrium oxide powder
0.05～0.1 part in tackiness agent.
7. the method for making of micro crystal wearable ceramic ball according to claim 2 is characterized in that, firing process carries out according to following sintering curve:
Normal temperature～300 ℃ 50 ℃/h
300～1200℃ 70～80℃/h
1200 ℃ are incubated 1～2 hour
1200～1450℃ 80～90℃/h
1450 ℃ are incubated 2～3 hours
Naturally be cooled to 300 ℃, kiln discharge.
8. according to the micro crystal wearable ceramic ball of the method for making of claim 5 preparation, it is characterized in that
A. described micro crystal wearable ceramic ball is made up of following components in weight percentage:
Al
2O
3 92-99％
SiO
2 0.1-6％
MgO 0.8-1.8％
CaO 0.1-0.2％
B. described micro crystal wearable ceramic ball physico-chemical property is: density 〉=3.6g/cm
3Grain size is 1.0-1.5 μ m; Abrasion≤0.1g/Kg.h; Mohs' hardness 〉=9; Water-intake rate≤0.02%.
9. according to the micro crystal wearable ceramic ball of the method for making of claim 6 preparation, it is characterized in that
A. described micro crystal wearable ceramic ball is made up of following components in weight percentage:
CrO
2 94-96％
YO
2 3-5％
Al
2O
3 0.3-1％。
B. described micro crystal wearable ceramic ball physico-chemical property is: density 〉=6g/cm
3Grain size is 0.3-0.5 μ m; Abrasion≤0.01g/Kg.h; H hardness 〉=1250; Crushing strength 〉=15KN.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710014580 CN101037337A (en) | 2007-04-27 | 2007-04-27 | Preparation method of micro crystal wearable ceramic ball |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710014580 CN101037337A (en) | 2007-04-27 | 2007-04-27 | Preparation method of micro crystal wearable ceramic ball |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101875977A Division CN101913861B (en) | 2007-04-27 | 2007-04-27 | Method for preparing microcrystal wear-resisting zirconia ball |
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Family
ID=38888539
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