CN104671808A - ZrO2 metering nozzle and preparation method thereof - Google Patents
ZrO2 metering nozzle and preparation method thereof Download PDFInfo
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- CN104671808A CN104671808A CN201510040328.0A CN201510040328A CN104671808A CN 104671808 A CN104671808 A CN 104671808A CN 201510040328 A CN201510040328 A CN 201510040328A CN 104671808 A CN104671808 A CN 104671808A
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- metering nozzle
- zro2
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Abstract
The invention provides a ZrO2 metering nozzle and a preparation method thereof. The ZrO2 metering nozzle is prepared from components A and a binder, wherein the mass of the binder is 4% of that the components A, and the components A comprise 51-58.2% by mass of ZrO2 with the particle size of 180-200 meshes, 34-38.8% by mass of ZrO2 with the particle size of 800-1,000 meshes, 0.9-1.4% by mass of Ho2O3 and 1.6-14.1% by mass of CaO, wherein ZrO2 with different particle sizes serves as raw materials, and Ho2O3 and CaO serve as additives. The stabilizing effect of the additives and the optimum matching ratio of the additives and ZrO2 are guaranteed so that the comprehensive performance of the ZrO2 metering nozzle can be improved and the long service life can be prolonged to 40-50 hours. By adopting the ZrO2 metering nozzle provided by the invention, the requirement of a continuous steel casting technology for a metering nozzle with a long service life can be met, the requirement for improvement in the continuous steel casting technology can be also met, and the steel making technology can be improved further.
Description
Technical field
The present invention relates to functional type fire resisting material field, specifically a kind of zirconia metering nozzle and preparation method thereof.
Background technology
In order to adapt to the needs of sequence casting, many stoves continuous casting and special continuous casting, the exploitation of domestic and international reinforcement product innovation, the update of expedite product, provides high-quality, efficient, Multifunctional continuous casting refractory materials, realizes the synchronized development of refractory for continuous casting and continuous casting technology.Metering nozzle is continuous small-billet casting one of crucial refractory materials, and the quality of its quality directly affects the length connecting and ask when watering, and plays a part to control molten steel flow.Molten steel flows into crystallizer by metering nozzle uniformly and stably, is the prerequisite ensureing that continuous casting normally carries out.
According at present known to research, the resistance to fouling best material of cast steel billet is zirconium white, and zirconium white is a kind of high temperature resistant, corrosion-resistant, wear-resistant and have the ceramic of excellent conductive capability.But due to zirconia material crystal conversion at different temperatures, limit the use properties of zirconia material, and existing stablizer is generally yttrium oxide, cerium oxide, magnesium oxide, calcium oxide etc., its stabilization also needs to improve with satisfied steel-making demand further, and this just needs the stablizer of development of new or one package stabilizer to make zirconia material obtain better use properties and life-span.
Summary of the invention
The present invention, in order to solve the problem of prior art, provides a kind of zirconia metering nozzle that can be used for tundish and preparation method thereof, improves over-all properties and the work-ing life of zirconia metering nozzle.
The invention provides a kind of zirconia metering nozzle, comprise component A and bonding agent, wherein the quality of bonding agent is 4% of component A, and component A comprises the component of following mass percent: granularity is 180-200 object ZrO
2raw material 51%-58.2%, granularity is 800-1000 object ZrO
2raw material 34%-38.8%, additive Ho
2o
30.9%-1.4%, addition of C aO 1.6%-14.1%.
Described ZrO
2raw material is the monoclinic zirconia raw material that purity is greater than 99.9%.
Described additive Ho
2o
399.9% is greater than with the purity of CaO.
Described bonding agent is the one in polyvinyl alcohol, spent pulping liquor.
Present invention also offers a kind of preparation method of zirconia metering nozzle, comprise the following steps:
1) by quality be the additive Ho of total mass 0.9%-1.4%
2o
3, quality to be the addition of C aO of total mass 1.6%-14.1% and quality be total mass 34%-38.8% 800-1000 object ZrO
2raw material carries out pre-mixing and forms Preblend;
2) by quality be the 180-200 object ZrO of total mass 51%-58.2% successively
2raw material, quality be the bonding agent of total mass 4% and Preblend successively reinforced carry out mixing, compression moulding under 100MPa on single fluid injection press after ageing mixture;
3) in pushed bat kiln, required zirconia metering nozzle is burnt till in 1670 DEG C by after formed material drying.
Beneficial effect of the present invention is: adopting can the additive of stabilizing zirconia and best stabilized proportioning very well, make the over-all properties of zirconia metering nozzle more superior, work-ing life further improves, 40-50h can be reached, not only meet continuous-casting steel-making to the long-life requirement in the mouth of a river, the demand that steel-making continuous casting technology improves can also be met, for contribution has been made in the further lifting of steel-smelting technology.
Embodiment
The invention provides a kind of zirconia metering nozzle that can be used for tundish and preparation method thereof, below in conjunction with embodiment, the present invention will be further described.
Embodiment (one)
Novel zirconia metering nozzle and preparation process as follows:
In this embodiment, to account for the per-cent of total mass as follows for Novel zirconia metering nozzle material therefor and quality thereof: the ZrO of 51%
2(180-200 order), 34% ZrO
2(800-1000 order), 0.9% Ho
2o
3, 14.1%CaO and 4% polyvinyl alcohol.
Preparation technology is: by said ratio first additive Ho
2o
3, CaO and 800-1000 object ZrO
2raw material premix, then press 180-200 object ZrO
2the order of addition(of ingredients) of raw material, bonding agent, Preblend is mixed, and is pressed into desired product, burns till after drying in pushed bat kiln in 1670 DEG C after ageing mixture on single fluid injection press under 100MPa.
Obtain the performance at the mouth of a river in table one.
Embodiment (two)
Novel zirconia metering nozzle material and preparation process as follows:
In this embodiment, to account for the per-cent of total mass as follows for Novel zirconia metering nozzle material therefor and quality thereof: the ZrO of 56%
2(180-200 order), 36% ZrO
2(800-1000 order), 0.9% Ho
2o
3, 7.1%CaO and 4% polyvinyl alcohol.
Preparation technology is: by said ratio first additive Ho
2o
3, CaO and 800-1000 object ZrO
2raw material premix, then press 180-200 object ZrO
2the order of addition(of ingredients) of raw material, bonding agent, Preblend is mixed, and is pressed into desired product, burns till after drying in pushed bat kiln in 1670 DEG C after ageing mixture on single fluid injection press under 105MPa.
Obtain the performance at the mouth of a river in table one.
Embodiment (three)
Novel zirconia metering nozzle material and preparation process as follows:
In this embodiment, to account for the per-cent of total mass as follows for Novel zirconia metering nozzle material therefor and quality thereof: the ZrO of 58%
2(180-200 order), 38% ZrO
2(800-1000 order), 1% Ho
2o
3, 3%CaO and 4% polyvinyl alcohol.
In this embodiment, the material therefor of Novel zirconia metering nozzle material and quality proportioning are ZrO
2(180-200 order), ZrO
2(800-1000 order), Ho
2o
3, CaO and polyvinyl alcohol be by quality 58% ZrO
2(180-200 order), quality are 38% ZrO
2(800-1000 order), quality are 1% Ho
2o
3,quality is the polyvinyl alcohol of 3% CaO and total content 4%.
Preparation technology is: by said ratio first additive Ho
2o
3, CaO and 800-1000 object ZrO
2raw material premix, then press 180-200 object ZrO
2the order of addition(of ingredients) of raw material, bonding agent, Preblend is mixed, and is pressed into desired product, burns till after drying in pushed bat kiln in 1670 DEG C after ageing mixture on single fluid injection press under 110MPa.
Obtain the performance at the mouth of a river in table one.
The each example of table one and now use ZrO
2metering nozzle material property contrasts:
| Example | Volume density/g/cm 3 | Folding strength Mpa | Compressive strength Mpa | Work-ing life (h) |
| 1 | 5.63 | 85 | 441 | 45 |
| 2 | 5.70 | 90 | 447 | 43 |
| 3 | 5.54 | 84 | 439 | 47 |
| ZrO 2 | 5.43 | 76 | 421 | 32 |
Embody rule approach of the present invention is a lot, and the above is only the preferred embodiment of the present invention, should be understood that; for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvement, these improvement also should be considered as protection scope of the present invention.
Claims (5)
1. a zirconia metering nozzle, is characterized in that: comprise component A and bonding agent, and wherein the quality of bonding agent is 4% of component A, and component A comprises the component of following mass percent: granularity is 180-200 object ZrO
2raw material 51%-58.2%, granularity is 800-1000 object ZrO
2raw material 34%-38.8%, additive Ho
2o
30.9%-1.4%, addition of C aO 1.6%-14.1%.
2. zirconia metering nozzle according to claim 1, is characterized in that: described ZrO
2raw material is the monoclinic zirconia raw material that purity is greater than 99.9%.
3. zirconia metering nozzle according to claim 1, is characterized in that: described additive Ho
2o
399.9% is greater than with the purity of CaO.
4. zirconia metering nozzle according to claim 1, is characterized in that: described bonding agent is the one in polyvinyl alcohol, spent pulping liquor.
5. a preparation method for zirconia metering nozzle according to claim 1, is characterized in that comprising the following steps:
1) by quality be the additive Ho of total mass 0.9%-1.4%
2o
3, quality to be the addition of C aO of total mass 1.6%-14.1% and quality be total mass 34%-38.8% 800-1000 object ZrO
2raw material carries out pre-mixing and forms Preblend;
2) by quality be the 180-200 object ZrO of total mass 51%-58.2% successively
2raw material, quality be the bonding agent of total mass 4% and Preblend successively reinforced carry out mixing, compression moulding under 100MPa on single fluid injection press after ageing mixture;
3) in pushed bat kiln, required zirconia metering nozzle is burnt till in 1670 DEG C by after formed material drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510040328.0A CN104671808A (en) | 2015-01-27 | 2015-01-27 | ZrO2 metering nozzle and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510040328.0A CN104671808A (en) | 2015-01-27 | 2015-01-27 | ZrO2 metering nozzle and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104671808A true CN104671808A (en) | 2015-06-03 |
Family
ID=53307462
Family Applications (1)
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|---|---|---|---|
| CN201510040328.0A Pending CN104671808A (en) | 2015-01-27 | 2015-01-27 | ZrO2 metering nozzle and preparation method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0705803A1 (en) * | 1994-04-22 | 1996-04-10 | Shinagawa Refractories Co., Ltd. | Zirconia sinter, process for producing the same, grinding part material, and orthodontic bracket material |
| CN1526683A (en) * | 2003-02-28 | 2004-09-08 | ס�ѻ�ѧ��ҵ��ʽ���� | Zirconium oxide ayglutinating body and producing method thereof |
| CN101254535A (en) * | 2008-03-27 | 2008-09-03 | 马鞍山钢铁股份有限公司 | Sized water inlet for running castings molten steel and manufacturing technology thereof |
| CN102249704A (en) * | 2011-04-22 | 2011-11-23 | 浙江省长兴铁狮耐火材料有限公司 | Zirconia metering nozzle manufacturing method |
| CN103979980A (en) * | 2014-05-07 | 2014-08-13 | 西安建筑科技大学 | Preparation method of zirconia metering nozzle |
-
2015
- 2015-01-27 CN CN201510040328.0A patent/CN104671808A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0705803A1 (en) * | 1994-04-22 | 1996-04-10 | Shinagawa Refractories Co., Ltd. | Zirconia sinter, process for producing the same, grinding part material, and orthodontic bracket material |
| CN1526683A (en) * | 2003-02-28 | 2004-09-08 | ס�ѻ�ѧ��ҵ��ʽ���� | Zirconium oxide ayglutinating body and producing method thereof |
| CN101254535A (en) * | 2008-03-27 | 2008-09-03 | 马鞍山钢铁股份有限公司 | Sized water inlet for running castings molten steel and manufacturing technology thereof |
| CN102249704A (en) * | 2011-04-22 | 2011-11-23 | 浙江省长兴铁狮耐火材料有限公司 | Zirconia metering nozzle manufacturing method |
| CN103979980A (en) * | 2014-05-07 | 2014-08-13 | 西安建筑科技大学 | Preparation method of zirconia metering nozzle |
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Application publication date: 20150603 |