CN108911712A - A kind of preparation method of high-content aluminium oxide ceramics - Google Patents
A kind of preparation method of high-content aluminium oxide ceramics Download PDFInfo
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- CN108911712A CN108911712A CN201810826717.XA CN201810826717A CN108911712A CN 108911712 A CN108911712 A CN 108911712A CN 201810826717 A CN201810826717 A CN 201810826717A CN 108911712 A CN108911712 A CN 108911712A
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- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
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Abstract
The invention discloses the preparation method of high-content aluminium oxide ceramics, which is made according to the ratio of pelite, kaolin, quartz sand and aluminium oxide, and preparation method includes the following steps：Pelite is milled to 200 mesh or less, it is mixed again with kaolin, quartz sand and aluminium oxide and suitable quantity of water is added stirs into slurry, slurry injection mold is placed on cement mortar shake table oscillation be placed on shady spot's natural air drying shaping and demoulding and be put into blast dry oven dry take out for 24 hours and be sintered experiment；Molding porcelain embryo is placed in high temperature furnace and is formed by a firing, setting is warming up to 1300 DEG C for 10 minutes 4 hours, and keeps the temperature 1 hour.High-content Alumina Ceramics prepared by the present invention are superior, in pelite comprehensive utilization of resources and on the basis of improving the added value of its product, pelite promoted to prepare aluminium oxide ceramics research and development.
Description
Technical field
The present invention relates to a kind of preparation methods of high-content aluminium oxide ceramics, and in particular to a kind of to utilize low-grade Al2O3's
Pelite, kaolin, quartz sand and aluminium oxide are come the method for preparing high-content aluminium oxide ceramics.
Technical background
Pelite resource utilization is lower to fail to be comprehensively utilized.People only focus on abandoning using high-grade bauxite
Low-grade bauxite (pelite), causes the profligacy of the type resource；Environment is made in the pelite accumulation discarded simultaneously
At strong influence.Therefore, pelite is made full use of, improving its application value is particularly important.
Summary of the invention
The object of the present invention is to provide a kind of preparation methods of high-content aluminium oxide ceramics, utilize pelite, kaolin, stone
Sand and aluminium oxide are mixed with high-content aluminium oxide ceramics, so that pelite recycling makes full use of, this can not only improve warp
Ji benefit can also preserve the ecological environment.The high-content Alumina Ceramics of production are superior.
Technical scheme is as follows：
A kind of preparation method of high-content aluminium oxide ceramics, the high-content aluminium oxide ceramics is by pelite, kaolin, quartz
Sand and aluminium oxide are made according to the ratio, and preparation method includes the following steps：Pelite is milled to 200 mesh hereinafter, again with kaolin, stone
Sand and aluminium oxide mix addition suitable quantity of water and stir into slurry, and slurry injection mold is placed on cement mortar shake table and is vibrated
It is placed on shady spot's natural air drying shaping and demoulding and is put into blast dry oven dry take out for 24 hours and be sintered experiment；It will molding
Porcelain embryo, which is placed in high temperature furnace, to be formed by a firing, and setting is warming up to 1300 DEG C for 10 minutes 4 hours, and keeps the temperature 1 hour.
Wherein, by mass, it matches as pelite:Kaolin:Quartz sand:Aluminium oxide=50~55:25~30:1.2
~1.5:15~18.
Further, it is 8~10 minutes that the time vibrated on cement mortar shake table is placed on after slurry injection mold.
Further, the quality of alumina accounting in pelite is 35~45%, the quality of alumina accounting in kaolin
It is 35~45%.
Further, set temperature dry in the blast dry oven is 60 DEG C~80 DEG C.
High-content aluminium oxide ceramics preparation method process of product development of the invention：Reaction mainly generates under the high temperature conditions
Mullite and corundum.Corundum is dispersed in ceramic body at graininess and is in close contact with mullite, forms the support of ceramic material
Structure.
Superiority of the invention：The high-content Alumina Ceramics of preparation are superior, in pelite comprehensive utilization of resources and
On the basis of the added value for improving its product, pelite is promoted to prepare aluminium oxide ceramics research and development.
High-content aluminium oxide ceramics prepared by the present invention has good chemical stability, abrasion resistance, heat resistance and excellent
Mechanical property, be widely used in many aspects such as machining, aerospace, electrotechnical, electronic industry, be that one kind has
Widely applied new structure functional material has and greatly develops and utilizes value.
Specific embodiment
Below with reference to embodiment, the present invention is described in further detail.
Embodiment 1：
By mass, it matches as pelite:Kaolin:Quartz sand:Aluminium oxide=53.92:28:1.42:16.67.It will
Pelite is milled to 200 mesh and stirs into slurry hereinafter, mixing with kaolin, quartz sand and aluminium oxide suitable quantity of water is added again, by slurry
Injection mold, which is placed on cement mortar shake table to vibrate, is placed on shady spot's natural air drying shaping and demoulding for 9 minutes, sets dry dry
Box temperature degree is that 70 DEG C of dry take out for 24 hours are sintered experiment.Molding porcelain embryo after drying is placed in high temperature furnace and is formed by a firing, if
1300 degree are warming up within fixed 10 minutes 4 hours, and keeps the temperature 1 hour.
Quantitative measurement is carried out to product, wherein compression strength is 91.11MPa, flexural strength 14.50MPa, water absorption rate
For 3.13%, acid resistance 5.12g/m2﹒ h.These indexs show that properties of product are superior, can be to further be used, to mention
High-Alumina rock economic benefit provides strong technical support.
Embodiment 2：
By mass, it matches as pelite:Kaolin:Quartz sand:Aluminium oxide=50:25:1.2:15.Pelite is ground
Slurry is stirred into 200 mesh hereinafter, mixing with kaolin, quartz sand and aluminium oxide suitable quantity of water is added again, slurry is injected into mold
Be placed in vibrate 8 minutes on cement mortar shake table and be placed on shady spot's natural air drying shaping and demoulding, set drying oven temperature as
60 DEG C of dryings take out be sintered experiment for 24 hours.Molding porcelain embryo after drying is placed in high temperature furnace and is formed by a firing, is set 4 hours
1300 degree are warming up within 10 minutes, and keeps the temperature 1 hour.
Quantitative measurement is carried out to product, wherein compression strength is 86.22MPa, flexural strength 12.18MPa, water absorption rate
For 3.02%, acid resistance 4.21g/m2﹒ h.These indexs show that properties of product are superior, can be to further be used, to mention
High-Alumina rock economic benefit provides strong technical support.
Embodiment 3：
By mass, it matches as pelite:Kaolin:Quartz sand:Aluminium oxide=55:30:1.5:18.Pelite is ground
Slurry is stirred into 200 mesh hereinafter, mixing with kaolin, quartz sand and aluminium oxide suitable quantity of water is added again, slurry is injected into mold
Be placed on cement mortar shake table to vibrate and be placed in shady spot's natural air drying shaping and demoulding after ten minutes, set drying oven temperature as
80 DEG C of dryings take out be sintered experiment for 24 hours.Molding porcelain embryo after drying is placed in high temperature furnace and is formed by a firing, is set 4 hours
1300 degree are warming up within 10 minutes, and keeps the temperature 1 hour.
Quantitative measurement is carried out to product, wherein compression strength is 89.64MPa, flexural strength 13.25MPa, water absorption rate
For 3.12%, acid resistance 5.01g/m2﹒ h.These indexs show that properties of product are superior, can be to further be used, to mention
High-Alumina rock economic benefit provides strong technical support.
The above is only preferable examples of the present invention, not to making any data and formal limitation, it is all according to
According to technical spirit of the invention to any data modification, equivalent variations made by example is applied above, the technology of the present invention reality is still fallen within
Within the scope of matter.
Claims (5)
1. a kind of preparation method of high-content aluminium oxide ceramics, it is characterised in that：The high-content aluminium oxide ceramics is by pelite, height
Ridge soil, quartz sand and aluminium oxide are made according to the ratio, and preparation method includes the following steps：Pelite is milled to 200 mesh hereinafter, again with
Kaolin, quartz sand and aluminium oxide mix addition suitable quantity of water and stir into slurry, and slurry injection mold is placed in cement mortar vibration
Oscillation, which is placed on shady spot's natural air drying shaping and demoulding and is put into blast dry oven dry take out for 24 hours, on dynamic platform is sintered reality
It tests；Molding porcelain embryo is placed in high temperature furnace and is formed by a firing, setting is warming up to 1300 DEG C for 10 minutes 4 hours, and keeps the temperature 1 hour.
2. the preparation method of high-content aluminium oxide ceramics according to claim 1, it is characterised in that：By mass, match
Than for pelite:Kaolin:Quartz sand:Aluminium oxide=50~55:25~30:1.2~1.5:15~18.
3. the preparation method of high-content aluminium oxide ceramics according to claim 1, it is characterised in that：After slurry injects mold
Being placed on the time vibrated on cement mortar shake table is 8~10 minutes.
4. the preparation method of high-content aluminium oxide ceramics according to claim 1, it is characterised in that：Oxidation in pelite
Aluminum amount accounting is 35~45%, and the quality of alumina accounting in kaolin is 35~45%.
5. the preparation method of high-content aluminium oxide ceramics according to claim 1, it is characterised in that：The forced air drying is dried
Dry set temperature is 60 DEG C~80 DEG C in case.
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| CN201810826717.XA CN108911712A (en) | 2018-07-25 | 2018-07-25 | A kind of preparation method of high-content aluminium oxide ceramics |
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| CN201810826717.XA CN108911712A (en) | 2018-07-25 | 2018-07-25 | A kind of preparation method of high-content aluminium oxide ceramics |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1821167A (en) * | 2006-03-13 | 2006-08-23 | 北京科技大学 | Corundum-mullite composite material and preparing method |
| CN102910923A (en) * | 2012-11-15 | 2013-02-06 | 北京科技大学 | Method for synthesizing corundum-mullite composite phase material by using bauxite tailings |
| CN103771841A (en) * | 2014-01-27 | 2014-05-07 | 中国石油集团渤海钻探工程有限公司 | Preparation method of corundum-mullite complex phase ceramic material |
| CN105087985A (en) * | 2015-08-11 | 2015-11-25 | 贵州大学 | Preparation method of metal ceramic |
-
2018
- 2018-07-25 CN CN201810826717.XA patent/CN108911712A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1821167A (en) * | 2006-03-13 | 2006-08-23 | 北京科技大学 | Corundum-mullite composite material and preparing method |
| CN102910923A (en) * | 2012-11-15 | 2013-02-06 | 北京科技大学 | Method for synthesizing corundum-mullite composite phase material by using bauxite tailings |
| CN103771841A (en) * | 2014-01-27 | 2014-05-07 | 中国石油集团渤海钻探工程有限公司 | Preparation method of corundum-mullite complex phase ceramic material |
| CN105087985A (en) * | 2015-08-11 | 2015-11-25 | 贵州大学 | Preparation method of metal ceramic |
Non-Patent Citations (2)
| Title |
|---|
| 《矿产资源工业要求手册》编委会: "《矿产资源工业要求手册》", 31 March 2014, 地质出版社 * |
| 杨展等: "《地理学大辞典》", 31 August 1992, 安徽人民出版社 * |
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