CN103755377B - A kind of 850m 3blast furnace props up iron runner castable - Google Patents
A kind of 850m 3blast furnace props up iron runner castable Download PDFInfo
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- CN103755377B CN103755377B CN201410051285.1A CN201410051285A CN103755377B CN 103755377 B CN103755377 B CN 103755377B CN 201410051285 A CN201410051285 A CN 201410051285A CN 103755377 B CN103755377 B CN 103755377B
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- powder
- iron runner
- blast furnace
- props
- skin
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Abstract
The present invention relates to a kind of 850m
3blast furnace props up iron runner castable, belongs to field of refractory castable, comprises the component of following parts by weight: moissanite 48-56, CeO
21-8, metallic silicon power 3-10, gahnite powder 10-25, useless smelting furnace skin 10-15, SrTiO
3powder 3-10, Guangxi mud 1-2, silicon nitride powder 1-5; Additional tripoly phosphate sodium STPP 0.1-0.2, styrene-maleic anhydride 0.05-0.2, Alumina gel suspension 3-8; Described useless smelting furnace skin is the stove skin producing graphite, and what it was main consists of SiC content 50-68%, C content 18-30%.The blast furnace iron runner that this mould material obtains has good thermal shock, and anti-erosion is peeled off by force, the feature that the iron influx large life-span is long.
Description
Technical field
The present invention relates to a kind of 850m
3blast furnace props up iron runner castable, belongs to metallurgical fire resisting material field.
Background technology
Existing iron runner castable is mostly Al
2o
3-SiC-C matter mould material, but common Al
2o
3-SiC-C matter is propped up iron runner castable and is used on blast furnace, and disposable iron influx is at about 100,000 tons.Along with strengthening smelting, the demand improving hot metal output becomes increasingly conspicuous, and an iron runner requires that the demand that disposable iron influx is large is also more and more urgent, but an iron runner is because heat-shock resistance is poor at present, occurring thermal spalling and structure spalling, cause not anti-erosion, is an iron runner life-span short major reason.
CN102101782A discloses a kind of iron runner castable, and described mould material is by alumina, Brown Alundum, silicon carbide, modified Nano carbon dust, SiO
2micro mist, aluminous cement, α-Al
2o
3micro mist, explosion-proof fiber, metallic silicon power, tripoly phosphate sodium STPP, Al (OH)
3with Mg (OH)
2complex sol suspension forms.But this take Brown Alundum as the mould material of principal constituent, heat-shock resistance is poor, easily causes thermal spalling and structure spalling, and an iron runner repairing work frequency is increased substantially, and produces and brings larger hidden danger, still need to improve to blast furnace stability and safety.
Summary of the invention
The object of this invention is to provide a kind of thermal shock resistance good, can resist molten iron preferably and corrode, minimizing is peeled off, and a kind of blast furnace of long service life props up iron runner castable.
Above-mentioned technical purpose of the present invention is achieved by the following technical programs: a kind of 850m
3blast furnace props up iron runner castable, and described mould material is by moissanite, CeO
2, metallic silicon power, gahnite powder, useless smelting furnace skin, SrTiO
3powder, Guangxi mud, silicon nitride powder, additional tripoly phosphate sodium STPP, styrene-maleic anhydride, Alumina gel suspension form, and it is characterized in that: the component comprising following parts by weight: moissanite 48-56, CeO
21-8, metallic silicon power 3-10, gahnite powder 10-25, useless smelting furnace skin 10-15, SrTiO
3powder 3-10, Guangxi mud 1-2, silicon nitride powder 1-5; Additional tripoly phosphate sodium STPP 0.1-0.2, styrene-maleic anhydride 0.05-0.2, Alumina gel suspension 3-8; Described useless smelting furnace skin is the stove skin producing graphite, and what it was main consists of SiC content 50-68%, C content 18-30%.
A kind of 850m according to claim 1
3blast furnace props up iron runner castable, it is characterized in that: the quality index of described moissanite is: SiC80-90%.
A kind of 850m according to claim 1
3blast furnace master props up iron runner castable, it is characterized in that: the quality index of described gahnite powder is: ZnAl
2o
4>=90%.
A kind of 850m according to claim 1
3blast furnace master props up iron runner castable, it is characterized in that: described SrTiO
3particle diameter be 10 ~ 20nm.
A kind of 850m according to claim 1
3blast furnace props up iron runner castable, it is characterized in that: the granularity < of described metallic silicon power 10 microns.
A kind of 850m according to claim 1
3blast furnace props up iron runner castable, and one of them proportioning is: moissanite 51, CeO28, metallic silicon power 3, gahnite powder 11, useless smelting furnace skin 15, SrTiO
3powder 10, Guangxi mud 1, silicon nitride powder 1; Additional tripoly phosphate sodium STPP 0.1, styrene-maleic anhydride 0.05, Alumina gel suspension 3; Described useless smelting furnace skin is the stove skin producing graphite, and what it was main consists of SiC content 50-68%, C content 18-30%.
The advantage of mould material of the present invention is: add SrTiO in (1) formula
3powder, it is good that this material has thermal shock resistance, and erosion-resisting characteristics is good, and hardness is high, wear-resistant, and can solve the problem that an iron runner peels off preferably, the not problem of resistance to erosion, this material can resist the erosion of detrimental impurity inside molten iron simultaneously; (2) CeO is added
2, both improve the heat-shock resistance of mould material, improved again the overall performance of mould material.(3) by introducing gahnite powder, the resistance to acids and bases of mould material can be improved; By adopting Alumina gel as bonding agent, mould material impurity can be made than use conventional cement few as bonding agent, system is pure, colloidal sol and matrix powder more easily generate mullite, mould material Medium Culture forms pin styloid, makes this product heat-shock resistance high, and mullite generates and belongs to microdilatancy structure simultaneously, avoid causing volumetric shrinkage in mould material use procedure, molten iron infiltrates thus destroys the phenomenon generation of structure influence product life; (4) compound introduces tripoly phosphate sodium STPP, styrene-maleic anhydride, greatly can increase the mobility of mould material, improve the stability of mould material, decrease the amount of required admixture, improve the workability of mould material, also greatly improve the work-ing life of mould material simultaneously.(5) introduce the stove skin of smelting, erosion-resistant silicon carbide and graphite carbon can be provided, achieve the object of product, again reduce cost.
A kind of 850m
3blast furnace props up the preparation method of iron runner, comprises step one, batching: weigh moissanite 48-56 by weight, CeO
21-8, metallic silicon power 3-10, gahnite powder 10-25, useless smelting furnace skin 10-15, strontium titanate powder 3-10, Guangxi mud 1-2, silicon nitride powder 1-5; Additional tripoly phosphate sodium STPP 0.1-0.2, styrene-maleic anhydride 0.05-0.2, Alumina gel suspension 3-8; Stir after 5-8 minute, after natural curing 1-2 hour, the demoulding obtains blast furnace and props up iron runner.
Preparation method of the present invention exempts from baking, when iron runner is propped up in preparation, construct after formula mould material and Alumina gel suspension agitation, through gravity flow or vibrating casting, can come into operation immediately after construction, be used in blast furnace and prop up iron runner, continuous tapping is without repairing, through comparing use on same blast furnace, iron influx reaches more than 150% of like product, and work-ing life is also longer.
Embodiment
850m
3blast furnace props up the formula 1 of iron runner castable, comprises the component of following parts by weight: moissanite 50, CeO
28, metallic silicon power 3, gahnite powder 24, useless smelting furnace skin 10, SrTiO
3powder 3, Guangxi mud 1, silicon nitride powder 1; Additional tripoly phosphate sodium STPP 0.1, styrene-maleic anhydride 0.05, Alumina gel suspension 3.
850m
3blast furnace props up the formula 2 of iron runner castable, comprises the component of following parts by weight: moissanite 51, CeO
28, metallic silicon power 3, gahnite powder 11, useless smelting furnace skin 15, SrTiO
3powder 10, Guangxi mud 1, silicon nitride powder 1; Additional tripoly phosphate sodium STPP 0.1, styrene-maleic anhydride 0.05, Alumina gel suspension 5.
850m
3blast furnace goes out the formula 3 of an iron runner castable, comprises the component of following parts by weight: moissanite 52, CeO
28, metallic silicon power 3, gahnite powder 20, useless smelting furnace skin 10, alumina powder 3, Guangxi mud 1, SrTiO
3powder 1; Additional tripoly phosphate sodium STPP 0.1, styrene-maleic anhydride 0.05, Alumina gel suspension 6.
Embodiment one
Formula 1 is used to prepare 850m
3blast furnace props up iron runner: prepare burden by formula 1 and stir after for mould material at stirrer, and in the mould installed in the iron runner that molten iron flows through, add mould material, the natural curing demoulding in 1 hour obtains blast furnace and props up iron runner.
Embodiment two
Formula 2 is used to prepare 850m
3blast furnace props up iron runner: prepare burden by formula 1 and stir after for mould material at stirrer, and in the mould installed in the iron runner that molten iron flows through, add mould material, the natural curing demoulding in 1 hour obtains blast furnace and props up iron runner.
Embodiment three
Formula 3 is used to prepare 850m
3blast furnace props up iron runner: prepare burden by formula 1 and stir after for mould material at stirrer, and in the mould installed in the iron runner that molten iron flows through, add mould material, the natural curing demoulding in 1 hour obtains blast furnace and props up iron runner.Specific targets see the following form
This specific embodiment is only explanation of the invention; it is not limitation of the present invention; those skilled in the art can make to the present embodiment the amendment not having creative contribution as required after reading this specification sheets, as long as but be all subject to the protection of patent law in right of the present invention.
Claims (5)
1. a 850m
3blast furnace props up iron runner castable, and described mould material is by moissanite, CeO
2, metallic silicon power, gahnite powder, useless smelting furnace skin, SrTiO
3powder, Guangxi mud, silicon nitride powder, additional tripoly phosphate sodium STPP, styrene-maleic anhydride, Alumina gel suspension form, and it is characterized in that: the component comprising following parts by weight: moissanite 48-56, CeO
21-8, metallic silicon power 3-10, gahnite powder 10-25, useless smelting furnace skin 10-15, SrTiO
3powder 3-10, Guangxi mud 1-2, silicon nitride powder 1-5; Additional tripoly phosphate sodium STPP 0.1-0.2, styrene-maleic anhydride 0.05-0.2, Alumina gel suspension 3-8; Described useless smelting furnace skin is the stove skin producing graphite, and what it was main consists of SiC content 50-68%, C content 18-30%.
2. a kind of 850m according to claim 1
3blast furnace props up iron runner castable, it is characterized in that: the quality index of described moissanite is: SiC 80-90%.
3. a kind of 850m according to claim 1
3blast furnace props up iron runner castable, it is characterized in that: described SrTiO
3particle diameter be 10 ~ 20nm.
4. a kind of 850m according to claim 1
3blast furnace props up iron runner castable, it is characterized in that: the quality index of described gahnite powder is: ZnAl
2o
4>=90%.
5. a kind of 850m according to claim 1
3blast furnace props up iron runner castable, it is characterized in that: the granularity < of described metallic silicon power 10 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410051285.1A CN103755377B (en) | 2014-02-14 | 2014-02-14 | A kind of 850m 3blast furnace props up iron runner castable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410051285.1A CN103755377B (en) | 2014-02-14 | 2014-02-14 | A kind of 850m 3blast furnace props up iron runner castable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103755377A CN103755377A (en) | 2014-04-30 |
| CN103755377B true CN103755377B (en) | 2015-08-05 |
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| CN201410051285.1A Active CN103755377B (en) | 2014-02-14 | 2014-02-14 | A kind of 850m 3blast furnace props up iron runner castable |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104355643B (en) * | 2014-12-01 | 2016-05-04 | 永春县永荣信息科技有限公司 | A kind of 5000T cement kiln coal injection pipe dedicated pouring material |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101767999A (en) * | 2009-11-17 | 2010-07-07 | 高树森 | Al2O3-MA-SiC-C refractory castable material with carbon wrapped by nano Al2O3-SiC film and preparation method thereof |
| CN102746012A (en) * | 2012-08-09 | 2012-10-24 | 山国强 | Castable for major iron runner of blast furnace larger than 2500m<3> |
-
2014
- 2014-02-14 CN CN201410051285.1A patent/CN103755377B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101767999A (en) * | 2009-11-17 | 2010-07-07 | 高树森 | Al2O3-MA-SiC-C refractory castable material with carbon wrapped by nano Al2O3-SiC film and preparation method thereof |
| CN102746012A (en) * | 2012-08-09 | 2012-10-24 | 山国强 | Castable for major iron runner of blast furnace larger than 2500m<3> |
Non-Patent Citations (2)
| Title |
|---|
| 张唐文;李友胜;李楠;.结合剂对Al_2O_3-MgAl_2O_4-SiC-C质铁沟浇注料性能的影响.《耐火材料》.2006,(第4期),283-286. * |
| 李友胜;胡蔚;李楠.铝硅凝胶粉结合Al_2O_3-MgO质浇注料的性能研究.《武汉科技大学学报》.2008,(第3期),291-293. * |
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| CN103755377A (en) | 2014-04-30 |
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Owner name: CHONGQING RADIO AND TV UNIVERSITY, LU XUZHI Free format text: FORMER OWNER: TANG LIANFANG Effective date: 20150703 |
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Effective date of registration: 20161213 Address after: Wenchang Dazu County of Chongqing city in 402372 Pearl River Town 4 groups Patentee after: Wang Debin Address before: A road 400000 Chongqing Jiulongpo District of Shiqiaopu Science Park Patentee before: CHONGQING RADIO & TV UNIVERSITY |
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Effective date of registration: 20171222 Address after: 6 417A room, building No. 1188, west two ring road, Shengze Town, Wujiang District, Jiangsu, Suzhou, 215228 Patentee after: Suzhou hair textile Co., Ltd. Address before: Wenchang Dazu County of Chongqing city in 402372 Pearl River Town 4 groups Patentee before: Wang Debin |