CN100357224C - Process of preparing Sialon ceramic material with waste Al2O3 SiC-C material - Google Patents
Process of preparing Sialon ceramic material with waste Al2O3 SiC-C material Download PDFInfo
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- CN100357224C CN100357224C CNB2006100129535A CN200610012953A CN100357224C CN 100357224 C CN100357224 C CN 100357224C CN B2006100129535 A CNB2006100129535 A CN B2006100129535A CN 200610012953 A CN200610012953 A CN 200610012953A CN 100357224 C CN100357224 C CN 100357224C
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Abstract
The process of preparing Sialon ceramic material with waste Al2O3-SiC-C iron runner material belongs to the field of waste refractory material recovering and reusing technology, and has low cost and easy industrial application. The present invention synthesizes Sialon ceramic material with waste Al2O3-SiC-C iron runner material in 60-80 wt% and compensating clay component in 20-40 wt%, and through crushing, mixing, drying, pressure forming and sintering. The X ray diffraction results show that the prepared Sialon ceramic material has beta-Sialon or (alpha+beta)-Sialon content over 98 % and excellent performance similar to that of conventional Sialon ceramic material, and SEM pictures prove its excellent mechanical performance.
Description
Technical field
The present invention relates to the refractory materials preparation, particularly a kind of recycling of waste and old refractory materials.
Background technology
Iron And Steel Industry will produce a large amount of waste and old refractory materialss every year, has only the waste and old refractory materials of a very little part to be used by secondary at present or the use of demoting in China, mainly is as the aggregate in soil redeposition or the refractory castable.The waste and old iron runner material that contains silicon and aluminium component, because it is oxidized that it is easier under hot conditions, during as degradation refractory materials second stage employ, its update is relatively frequent, can shorten greatly work-ing life, even some in use also can bring negative impact.Therefore, most waste and old refractory materialss all fall as solid waste is buried, at present the Al that generally adopts of domestic big-and-middle-sized blast furnace
2O
3-SiC-C matter iron runner material all is dropped or buries, and this is contaminate environment not only, and has wasted available resource.Sai Long (Sialon) matches grand refractory materials no matter stupalith is all to have been widely used as high-temperature structural ceramics or as refractory materials but adopt conventional industrial raw material to make, and its cost is than higher, and economic benefit is lower.
Summary of the invention
The object of the invention is exactly the deficiency that overcomes above-mentioned prior art, provide a kind of cost low, be easy to the waste and old Al of utilizing of suitability for industrialized production
2O
3-SiC-C matter iron runner material prepares the method for Sialon ceramic material.
The present invention is with waste and old Al
2O
3-SiC-C matter iron runner material is a main raw material, add an amount of clay and carry out composition compensation, through pulverizing, mix, dry, pressure forming and heat-agglomerating handles a plurality of steps, grand (Sialon) material of synthetic match.
The inventive method is:
(1) by prescription assembly raw material; Composition of raw materials is by mass percentage: waste and old Ai
2O
3-SiC-C matter iron runner material: 60-80%; Clay: 20-40%.
Wherein: waste and old Al
2O
3The contained main component of-SiC-C matter iron runner material is by mass percentage: Al
2O
3, 60-70%; SiC, 20-30%; C, 10-20%.The contained major ingredient of clay is by mass percentage: SiO
2, 60-70%; Al
2O
3, 20-30%.
(2) pulverize, mix; With raw material ball milling 6 hours in planetary ball mill, be ground to particle diameter less than 5 μ m;
(3) drying; Put into 100 ℃ of loft drier inner dryings 5 hours;
(4) pressure forming; Ratio according to 0.5ml/10g is added polyvinyl alcohol adhesive, mixes thoroughly, in the pressure overdraft moulding of 40MPa;
(5) heat-agglomerating is handled; Feed ordinary nitrogen (99.99%), nitrogen pressure is 0.1-20MPa, and temperature is 1450-1650 ℃, is incubated 1-5 hour.
The present invention is suitable for utilizing waste and old Al
2O
3-SiC-C matter iron runner material prepares Sialon ceramic material.According to the Sialon ceramic material that the inventive method is produced, XRD result shows that the content of synthetic beta-Sialon or (alpha+beta)-Sialon all reaches more than 98%; Have the same excellent performance, be transgranular fracture, illustrate that its mechanical property is fine from the fracture SEM picture display material with conventional β-sialon or (alpha+beta)-Sialon stupalith.The inventive method cost is low, be easy to suitability for industrialized production, can also reduce environmental pollution.
Description of drawings
Fig. 1 is the X-ray diffraction that adopts the synthetic beta-Sialon of the inventive method figure as a result.
Fig. 2 is the X-ray diffraction that adopts synthetic (the alpha+beta)-Sialon of the inventive method figure as a result.
Fig. 3 is for adopting the stereoscan photograph of the synthetic beta-Sialon of the inventive method.
Fig. 4 is for adopting the stereoscan photograph of synthetic (the alpha+beta)-Sialon of the inventive method.
Embodiment 1
One of method that the present invention is more concrete is:
(1) by prescription assembly raw material; Composition of raw materials is by mass percentage: waste and old Al
2O
3-SiC-C matter iron runner material 70%, clay 30%.
(2) pulverize, mix; With raw material ball milling 6 hours in planetary ball mill, be ground to particle diameter less than 5 μ m;
(3) drying; Put into 100 ℃ of loft drier inner dryings 5 hours;
(4) pressure forming; Ratio according to 0.5ml/10g is added polyvinyl alcohol adhesive, mixes thoroughly, in the pressure overdraft moulding of 40MPa;
(5) heat-agglomerating is handled; Feed the nitrogen of purity 99.99%, nitrogen pressure is 20MPa, is warming up to 1650 ℃, insulation 2h.
The result characterizes: show from XRD figure spectrum (Fig. 1) result to synthesize beta-Sialon, SEM photo (Fig. 3) shows that beta-Sialon is typical long column shape, and interlaced, mainly based on transgranular fracture, its ultimate compression strength and fracture toughness property have reached 3800Mp and 6MPa.m
1/2
Embodiment 2
The method that the present invention is more concrete be:
(1) by prescription assembly raw material; Composition of raw materials is by mass percentage: waste and old Al
2O
3-SiC-C matter iron runner material 80%, clay 20%.
(2) pulverize, mix; With raw material ball milling 6 hours in planetary ball mill, be ground to particle diameter less than 5 μ m;
(3) drying; Put into 100 ℃ of loft drier inner dryings 5 hours;
(4) pressure forming; Ratio according to 0.5ml/10g is added polyvinyl alcohol adhesive, mixes thoroughly, in the pressure overdraft moulding of 40MPa;
(5) heat-agglomerating is handled; Feed the nitrogen of purity 99.99%, nitrogen pressure is 0.1MPa, is warming up to 1500 ℃, insulation 4h.
The result characterizes: show from XRD figure spectrum (Fig. 2) result to have synthesized (alpha+beta)-Sialon, SEM photo (Fig. 4) shows that the fracture apperance of (alpha+beta)-Sialon is particulate state and long column shape forms the network structure of filling, and its mechanical property is fine.
Claims (1)
1, a kind ofly utilizes waste and old Al
2O
3-SiC-C matter iron runner material prepares the method for Sialon ceramic material, it is characterized in that:
(1) by prescription assembly raw material; Composition of raw materials is by mass percentage: waste and old Al
2O
3-SiC-C matter iron runner material: 60-80%; Clay: 20-40%;
Wherein: waste and old Al
2O
3The contained major ingredient of-SiC-C matter iron runner material is by mass percentage: Al
2O
3, 60-70%; SiC, 20-30%; C, 10-20%; The contained major ingredient of clay is by mass percentage: SiO
2, 60-70%; Al
2O
3, 20-30%;
(2) pulverize, mix; With raw material ball milling 6 hours in planetary ball mill, be ground to particle diameter less than 5 μ m;
(3) drying; Put into 100 ℃ of loft drier inner dryings 5 hours;
(4) pressure forming; Ratio according to 0.5ml/10g is added polyvinyl alcohol adhesive, mixes thoroughly, in the pressure overdraft moulding of 40MPa;
(5) heat-agglomerating is handled; Feed the nitrogen of purity 99.99%, nitrogen pressure is 0.1-20MPa, and temperature is 1450-1650 ℃, is incubated 1-5 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100129535A CN100357224C (en) | 2006-07-14 | 2006-07-14 | Process of preparing Sialon ceramic material with waste Al2O3 SiC-C material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100129535A CN100357224C (en) | 2006-07-14 | 2006-07-14 | Process of preparing Sialon ceramic material with waste Al2O3 SiC-C material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1887798A CN1887798A (en) | 2007-01-03 |
| CN100357224C true CN100357224C (en) | 2007-12-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100129535A Active CN100357224C (en) | 2006-07-14 | 2006-07-14 | Process of preparing Sialon ceramic material with waste Al2O3 SiC-C material |
Country Status (1)
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|---|---|
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1349956A (en) * | 2001-09-14 | 2002-05-22 | 中国科学院上海硅酸盐研究所 | Low cost process of synthesizing sialon ceramic powder |
| CN1661117A (en) * | 2004-02-27 | 2005-08-31 | 武汉科技大学 | Method for preparing cast material of AL2O3-SiC-Ciron runner |
-
2006
- 2006-07-14 CN CNB2006100129535A patent/CN100357224C/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1349956A (en) * | 2001-09-14 | 2002-05-22 | 中国科学院上海硅酸盐研究所 | Low cost process of synthesizing sialon ceramic powder |
| CN1661117A (en) * | 2004-02-27 | 2005-08-31 | 武汉科技大学 | Method for preparing cast material of AL2O3-SiC-Ciron runner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1887798A (en) | 2007-01-03 |
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Owner name: SHANDONG HAOYE NEW MATERIAL DEVELOPMENT CO., LTD. Free format text: FORMER OWNER: SHANXI NEW FURNACE GROUP CO., LTD. Effective date: 20150226 |
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Free format text: CORRECT: ADDRESS; FROM: 030003 TAIYUAN, SHAANXI PROVINCE TO: 030100 TAIYUAN, SHAANXI PROVINCE |
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Effective date of registration: 20150226 Address after: Dong Huang Shui town of Yangqu County in Shanxi province 030100 Taiyuan Guxian Village East Patentee after: SHANXI HAOYE NEW MATERIAL DEVELOPMENT CO., LTD. Patentee after: University of Science and Technology Beijing Address before: 030003 No. 5, new street, Mt. Hengshan Road, Shanxi, Taiyuan Patentee before: Shanxi New Furnace Group Co., Ltd. Patentee before: University of Science and Technology Beijing |