CN106904948A - A kind of quasi- nano wearproof alpha-aluminium oxide ball preparation method - Google Patents

A kind of quasi- nano wearproof alpha-aluminium oxide ball preparation method Download PDF

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CN106904948A
CN106904948A CN201710111628.2A CN201710111628A CN106904948A CN 106904948 A CN106904948 A CN 106904948A CN 201710111628 A CN201710111628 A CN 201710111628A CN 106904948 A CN106904948 A CN 106904948A
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quasi
alpha
ball
aluminium oxide
sintering
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李军远
刘卫东
常传平
丁锐
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KUN PENG SHANDONG NEW MATERIALS TECHNOLOGY Co Ltd
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KUN PENG SHANDONG NEW MATERIALS TECHNOLOGY Co Ltd
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Abstract

A kind of quasi- nano wearproof alpha-aluminium oxide ball preparation method, belongs to ceramic materials preparation technology field.Characterized in that, preparation process is as follows:The first step, dispensing:It is not more than the quasi- nanometer alpha-aluminium oxide of 0.5um using mean grain size, quasi- nanometer alpha-aluminium oxide adds 0.09 0.1 component sintering additives to correspondence per mass parts;Second step, ball milling;3rd step, refined filtration:To the 1.2kg of the magnesium chloride 0.3 and 0.8kg of alum 0.2 is added in every t slurries, slurry moisture content is reduced to 36 40wt% by vacuum filtration;4th step, mist projection granulating;5th step, is shaped to spherical green compact;6th step, sintering:With hyperthermia tunnel Kiln, kiln discharge is naturally cooling to room temperature.The wear-resisting alumina ball that products obtained therefrom wear resistance ratio Japan of the present invention produces is low one times, and low ten times or so of wear-resisting alumina ball is produced than domestic original technology;Preparation cost is cheap, can be suitable for mass industrialized production.

Description

A kind of quasi- nano wearproof alpha-oxidation aluminium ball preparation method
Technical field
The invention belongs to ceramic materials preparation technology field, and in particular to a kind of preparation method of wear-resisting alpha-oxidation aluminium ball.
Background technology
Aluminium oxide ceramics has excellent wearability, elevated temperature strength and inoxidizability and has obtained more and more widely should With, be particularly increasingly used in the powder of the industries such as thermoelectricity, steel, smelting, mine or the induction system of fluid substitute pass The metal and organic material of system.But the alumina balls produced by original process, abrasion resistance properties and shock resistance are not Meet sand mill(Linear velocity reaches 13 meter per seconds), the field such as cement mill requirement.Application No. 201610199240.8 Patent document proposes addition cubic boron nitride, titanium dioxide, molybdenum bisuphide, it is believed that these materials are because originating less, price is high And should not promote the use of;The patent document of Application No. 201610305443.0 proposes hollow height of the addition containing more polyvinyl alcohol Hardness pelletizing is internally formed micropore and plays the effect of toughness reinforcing in porcelain ball, it is believed that the operating condition of this method requirement It is very harsh and be not suitable with mass industrialized production.
The content of the invention
For the deficiency of above-mentioned this area original technology, the present invention provides a kind of quasi- nano wearproof alpha-oxidation aluminium ball preparation side Method, preparation cost is cheap, can be suitable for mass industrialized production.
The technical solution adopted for the present invention to solve the technical problems is:Invent a kind of quasi- nano wearproof alpha-oxidation aluminium ball system Preparation Method, it is characterised in that preparation process is as follows:
The first step, dispensing:It is not more than the quasi- nano-alpha aluminium oxide of 0.5um using mean grain size, correspondence is per the quasi- nanometer of mass parts Alpha-alumina adds 0.09-0.1 component sintering additives;
Second step, ball milling:By the three-level ball milling connected, slurry moisture content is 57-63wt% after ball milling;
3rd step, refined filtration:To magnesium chloride 0.3-1.2kg and alum 0.2-0.8kg is added in every t slurries, vacuum filtration is slurry Moisture content is reduced to 36-40wt%;
4th step, mist projection granulating;
5th step, is shaped to spherical green compact;
6th step, sintering, with hyperthermia tunnel Kiln, 1400-1450 DEG C of burning is risen to the firing rate of 10-25 DEG C/min from room temperature Into, 6-10h is incubated, pressure-fired, weakly reducing atmosphere are kept therebetween, then 200 DEG C are down to the cooling velocity of 10-30 DEG C/min, go out Kiln, is naturally cooling to room temperature.
In the present invention, sintering aid includes each component of following mass parts:Kaolin 40-50 parts, wollastonite 10-20 Part, diopside 20-30 parts, talcum 20-30 parts.
Compared with prior art, what the present invention was realized has the beneficial effect that:
The wear-resisting alumina ball that products obtained therefrom wear resistance ratio Japan produces is low one times, produces wear-resisting alumina ball than domestic original technology low Ten times or so;Preparation cost is cheap, can be suitable for mass industrialized production.
Specific embodiment
The present invention is made below by embodiment being illustrated, the quasi- nano-alpha aluminium oxide used by following examples is mountain The production of Dong Aopeng new materials Science and Technology Ltd..
Embodiment one
The first step, dispensing, quasi- nano-alpha aluminium oxide 30t, kaolin 1200kg, wollastonite 600kg, diopside 600kg, talcum 600kg;Second step, ball milling is added water in ball milling, and the quasi- nanometer slurry that moisture content is 61wt% is obtained by the three-level ball milling connected; 3rd step, refined filtration, to magnesium chloride 0.3kg and alum 0.8kg, vacuumizing filtration is added in every t slurries, is reduced to slurry moisture content 39wt%;4th step, mist projection granulating;5th step, shaping, rolling turns into spherical green compact;6th step, sintering, with hyperthermia tunnel Kiln, Burnt till from room temperature to 1400 DEG C with the firing rate of 10 DEG C/min, be incubated 10h, pressure-fired, weakly reducing atmosphere are kept therebetween, 200 DEG C are down to the cooling velocity of 30 DEG C/min again, kiln discharge is naturally cooling to room temperature.
Gained porcelain ball, if pressing《Wear-resisting alumina ball》The impact resistance that JC/T848.12010 specifies and abrasion test method, Ground 24 hours with 80 turns per minute, measurement result is 0.001 g/kgh, therefore it is considered that the method rotating speed is too low, porcelain Friction suffered by ball is too weak with effect of impact, is unsuitable for determining the performance of product of the present invention.We use Zibo Randt's fine ceramics Co., Ltd YMJ1 type Quick ball grinders, are ground 15 hours with 480 turns per minute, and impact resistance is 3.06 with abrasion test result G/kgh, with the Wuxi building materials testing machinery plant full-automatic constant stress pressure testing machine of DYE-600 types, measure crushing force is 41kN. Ground 15 hours with 480 turns per minute, it is 32.52 g/kgh, Japan to measure original technology and produce wear-resisting alumina ball milling consumption It is 5.97 g/kgh to produce wear-resisting alumina ball milling consumption.
It can be seen that low one times or so of the wear-resisting alumina ball that products obtained therefrom wear resistance ratio Japan produces, produces resistance to than domestic original technology Low ten times or so of alumina balls of mill.
Embodiment two
Compared with embodiment one, preparation technology flow is identical, and simply raw material specifically matches difference, the design parameter of each step Different, measurement result is different, and something in common is repeated no more, and difference is specific as follows:
The first step, dispensing, quasi- nano-alpha aluminium oxide 30t, kaolin 1500kg, wollastonite 300kg, diopside 600kg, talcum 600kg;Second step, ball milling, quasi- nanometer slurry moisture content is 59.5wt%;3rd step, refined filtration, to adding magnesium chloride in every t slurries 0.8kg and alum 0.5kg, vacuumizing filtration, slurry moisture content is reduced to 38wt%;6th step, sintering, with hyperthermia tunnel Kiln, with 18 DEG C/firing rate of min burns till from room temperature to 1430 DEG C, is incubated 9h, then be down to 200 with the cooling velocity of 20 DEG C/min ℃。
Gained porcelain ball, presses《Wear-resisting alumina ball》The impact resistance that JC/T848.12010 specifies and abrasion test method, survey Result is determined for 0.001 g/kgh, with YMJ1 type Quick ball grinders, is ground 15 hours with 480 turns per minute, determine abrasion result It is 3.12 g/kgh, with the Wuxi building materials testing machinery plant full-automatic constant stress pressure testing machine of DYE-600 types, determines crushing force It is 39.4kN.
Embodiment 3
Compared with embodiment one, preparation technology flow is identical, and simply raw material specifically matches difference, and the design parameter of each step has Institute is different, and something in common is repeated no more, and difference is specific as follows:
The first step, dispensing, quasi- nano-alpha aluminium oxide 30t, kaolin 1200kg, wollastonite 300kg, diopside 600kg, talcum 600kg;Second step, ball milling, quasi- nanometer slurry moisture content is starched for 58.2wt%;3rd step, refined filtration, to adding chlorination in every t slurries Magnesium 1.2kg and alum 0.2kg, vacuumizing filtration, slurry moisture content is reduced to 37wt%;6th step, sintering, with hyperthermia tunnel Kiln, with The firing rate of 25 DEG C/min is burnt till from room temperature to 1450 DEG C, is incubated 6h, then be down to 200 with the cooling velocity of 10 DEG C/min ℃。
Gained porcelain ball, presses《Wear-resisting alumina ball》The impact resistance that JC/T848.12010 specifies and abrasion test method, survey Result is determined for 0.001 g/kgh, with YMJ1 type Quick ball grinders, is ground 15 hours with 480 turns per minute, determine abrasion result It is 2.97 g/kgh, with the full-automatic constant stress pressure testing machine of DYE-600 types, measure crushing force is 41.6kN.
The above, is only presently preferred embodiments of the present invention, is not the limitation for making other forms to the present invention, is appointed What those skilled in the art is become the equivalence enforcement for turning to equivalent variations possibly also with the technology contents of the disclosure above Example.But it is every without departing from technical solution of the present invention content, according to appointing that technical spirit of the invention is made to above example What simple modification, equivalent variations, still falls within the protection domain of technical solution of the present invention.

Claims (2)

1. a kind of quasi- nano wearproof alpha-oxidation aluminium ball preparation method, it is characterised in that preparation process is as follows:
The first step, dispensing:It is not more than the quasi- nano-alpha aluminium oxide of 0.5um using mean grain size, correspondence is per the quasi- nanometer of mass parts Alpha-alumina adds 0.09-0.1 component sintering additives;
Second step, ball milling:By the three-level ball milling connected, slurry moisture content is 57-63wt% after ball milling;
3rd step, refined filtration:To magnesium chloride 0.3-1.2kg and alum 0.2-0.8kg is added in every t slurries, vacuum filtration is slurry Moisture content is reduced to 36-40wt%;
4th step, mist projection granulating;
5th step, is shaped to spherical green compact;
6th step, sintering:With hyperthermia tunnel Kiln, 1400-1450 DEG C of burning is risen to from room temperature with the firing rate of 10-25 DEG C/min Into, 6-10h is incubated, pressure-fired, weakly reducing atmosphere are kept therebetween, then 200 DEG C are down to the cooling velocity of 10-30 DEG C/min, go out Kiln, is naturally cooling to room temperature.
2. a kind of quasi- nano wearproof alpha-oxidation aluminium ball preparation method according to claim 1, it is characterised in that sintering aid Each component including following mass parts:Kaolin 40-50 parts, wollastonite 10-20 parts, diopside 20-30 parts, talcum 20-30 Part.
CN201710111628.2A 2017-02-28 2017-02-28 A kind of quasi- nano wearproof alpha-aluminium oxide ball preparation method Pending CN106904948A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109206125A (en) * 2018-10-31 2019-01-15 广州供电局有限公司 ceramic insulator and preparation method thereof
CN109534790A (en) * 2018-11-29 2019-03-29 刘永 A kind of preparation method of high-performance high-purity alumina ceramic mill ball
CN110368918A (en) * 2019-08-15 2019-10-25 西南化工研究设计院有限公司 A kind of Spray granulation method of boehmite powder

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102503289A (en) * 2011-11-23 2012-06-20 成都新柯力化工科技有限公司 Thermal-insulating anti-flaming building material and preparation method thereof
CN103274674A (en) * 2013-06-17 2013-09-04 金刚新材料股份有限公司 Preparation method of alumina porcelain ball for dry process ball mill
CN104628302A (en) * 2013-11-12 2015-05-20 青岛青工建筑机械有限公司 Lightweight environmental protection heat-resistant decoration material

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102503289A (en) * 2011-11-23 2012-06-20 成都新柯力化工科技有限公司 Thermal-insulating anti-flaming building material and preparation method thereof
CN103274674A (en) * 2013-06-17 2013-09-04 金刚新材料股份有限公司 Preparation method of alumina porcelain ball for dry process ball mill
CN104628302A (en) * 2013-11-12 2015-05-20 青岛青工建筑机械有限公司 Lightweight environmental protection heat-resistant decoration material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109206125A (en) * 2018-10-31 2019-01-15 广州供电局有限公司 ceramic insulator and preparation method thereof
CN109534790A (en) * 2018-11-29 2019-03-29 刘永 A kind of preparation method of high-performance high-purity alumina ceramic mill ball
CN110368918A (en) * 2019-08-15 2019-10-25 西南化工研究设计院有限公司 A kind of Spray granulation method of boehmite powder

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