CN1544660A - Al*O*-SiC-C system waterless taphole mix containing ferrosilicon nitride - Google Patents
Al*O*-SiC-C system waterless taphole mix containing ferrosilicon nitride Download PDFInfo
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- CN1544660A CN1544660A CNA2003101150474A CN200310115047A CN1544660A CN 1544660 A CN1544660 A CN 1544660A CN A2003101150474 A CNA2003101150474 A CN A2003101150474A CN 200310115047 A CN200310115047 A CN 200310115047A CN 1544660 A CN1544660 A CN 1544660A
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- sic
- stemming
- quality
- silicon nitride
- iron nitride
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Abstract
The invention provides a silicon iron nitride-containing Al2O3-SiC-C system anhydrous tamping plug, composed of Al2O3, SiC, C, Si3N4, SiO2, Fe2O3 and other components in mass percents (m%) of 30-60%, 5-17%, 10-25%, 5-20%, 2-10%, 2-7% and 2-7%, respectively; adding 3-20m% silicon iron nitride to these raw materials, and during detecting course, silicon iron nitride is calculated in Fe2O3 form. Other components include: CaO, MgO, TiO2, K2O and NaO. Its advantages: solving the problems of slowly sintering of tamping plug and difficultly making holes, improving the property of the tamping plug; and at the same time reducing production cost.
Description
Technical field
The invention belongs to blast furnace iron notch stemming material technical field, a kind of Al of nitrogen ferrosilicon particularly is provided
2O
3-SiC-C system anhydrous stemming is applicable to making the full mud of blast furnace.
Technical background
Along with the enforcement of blast furnace maximization and high top pressure operation, more and more higher to the requirement of iron notch stemming, hydrous taphole loam and common anhydrous stemming can't satisfy on-the-spot needs.Nineteen ninety-five " bao steel technology " in the second phase people such as Chen Shouping in stemming, introduce the useless brick of silicon nitride combined silicon carbide, use properties is fine, its composition (quality %) is: 56.26% Al
2O
3, 10.7% SiC, %, 0.238% (K
2O+NaO), 1.49%Fe
2O
3, 4.36%Si
3N
4, 0.36%CaO, 0.07%MgO, 0.89% TiO
2, 10.95% SiO
2The main raw material of its production is that silicon nitride combined silicon carbide, high alumina corundum, soft clay, kyanite and alumina powder etc. are made.
In stemming, introduce the useless brick of silicon nitride combined silicon carbide, substitute the silicon carbide of part on the one hand, reduce cost; Utilize the advantage of silicon nitride simultaneously.Because silicon nitride has advantages such as fusing point height, hardness height, good thermal shock stability and erosion resistance are strong, so compressive strength, oxygen-proof property and the resistance performance of slag corrosion of introducing the stemming of silicon nitride all are improved significantly; But this stemming exists but that hardness is big, perforate is difficult, and defective such as sintering is slow.
Though the cost of the useless brick of introducing silicon nitride combined silicon carbide is lower,, useless brick source channel is fixing, and the performance index of product can not get assurance, thereby have influenced the work-ing life of this stemming.And introduce pure silicon nitride raw material, and though the performance of material is guaranteed,, cause the cost lifting of stemming bigger because silicon nitride costs an arm and a leg, be difficult to popularization and application.
Summary of the invention
The object of the present invention is to provide a kind of Al of nitrogen ferrosilicon
2O
3-SiC-C system anhydrous stemming by adding 3-20% (massfraction) ferro-silicon nitride fine powder, has solved problems such as the sintering that exists during stemming uses is slow, perforate difficulty, improves the performance of stemming; Reduce production costs simultaneously.
Formation chemical ingredients of the present invention (massfraction %) is:
Al
2O
3?30～60％
SiC?????5～17％
C???????10～25％
Si
3N
4???5～20％
SiO
2?????2-10％
Fe
2O
3???2～7％
Other compositions 2-7%
Add 3-20% (massfraction) ferro-silicon nitride fine powder in the raw material, in testing process with Fe
2O
3Form count; Other compositions comprise CaO, MgO, TiO
2, K
2O, NaO etc.
The composition such as the table 1 of the used ferro-silicon nitride of the present invention.
The composition of table 1 ferro-silicon nitride
| Project | Specification value (quality %) | Standard value (quality %) | |
| Chemical analysis | ?Si | ＞45 | 51 |
| ?N | ＞28 | 31 | |
| ?Fe | 12～17 | 14 | |
| ?O | ＜2.5 | 1.7 | |
The invention has the advantages that: solved problems such as the sintering that exists during stemming uses is slow, perforate difficulty, this stemming all has good performance aspect medium temperature intensity, resistance to fouling and the perforate complexity.Not only guaranteed to tap a blast furnace for a long time with this stemming, reduced the number of casts; And reduced the flushing and casting operation, and reduced working strength of workers greatly, reduced cost simultaneously.
Embodiment
Specific embodiments of the invention see Table 2
Table 2 embodiments of the invention
| Other compositions, % (quality) | ??3 | ????4 | ????5.5 | ????1.5 |
| Resistance to slag corrosion (mm) | Good | Good | Good | Good |
| Medium temperature intensity | Good | Good | Good | Better |
| The perforate complexity | Better | Good | Good | Difference |
Annotate: resistance to slag corrosion is that stemming is made Φ 50 * 50mm, and cinder hole is Φ 25 * 25mm, does under the 1500 ℃ * 3h reductive condition high temperature sludge and invades experiment; The blast furnace slag is: SiO
234.29%, Al
2O
314.37%, CaO43.58, MgO 5.79, and FeO 0.9%.
Chemical ingredients of the present invention is the detected result of stemming after 1000 ℃ * 3h reducing atmosphere is handled.
Find out from detected result, use the stemming of the present invention's development all having good performance aspect medium temperature intensity, resistance to fouling and the perforate complexity.Not only guaranteed to tap a blast furnace for a long time with this stemming, reduced the number of casts; And reduced the flushing and casting operation, reduced working strength of workers greatly, to the time reduced cost.
Claims (3)
1, a kind of Al of nitrogen ferrosilicon
2O
3-SiC-C system anhydrous stemming is by Al
2O
3, SiC, C, SiC, Si
3N
4, SiO
2And other compositions compositions, it is characterized in that: the chemical ingredients mass percent is: Al
2O
3: 30～60%, SiC:5～17%, C:10～25%, Si
3N
4: 5～20%, SiO
2: 2～10%, Fe
2O
3: 2～7%, other compositions: 2～7%; The 3-20 quality % ferro-silicon nitride fine powder that in raw material, adds, in testing process with Fe
2O
3Form count.
2, according to the Al of the described nitrogen ferrosilicon of claim 1
2O
3-SiC-C system anhydrous stemming is characterized in that: described other compositions comprise: CaO, MgO, TiO
2, K
2O, NaO.
3, according to the Al of claim 1 or 2 described nitrogen ferrosilicon
2O
3-SiC-C system anhydrous stemming is characterized in that: the ferro-silicon nitride composition that adds in the raw material is: Si＞45 quality %, N＞28 quality %, Fe:12～17 quality %, O＜2.5 quality %.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310115047 CN1226425C (en) | 2003-11-24 | 2003-11-24 | Al*O*-SiC-C system waterless taphole mix containing ferrosilicon nitride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310115047 CN1226425C (en) | 2003-11-24 | 2003-11-24 | Al*O*-SiC-C system waterless taphole mix containing ferrosilicon nitride |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1544660A true CN1544660A (en) | 2004-11-10 |
| CN1226425C CN1226425C (en) | 2005-11-09 |
Family
ID=34337227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310115047 Expired - Fee Related CN1226425C (en) | 2003-11-24 | 2003-11-24 | Al*O*-SiC-C system waterless taphole mix containing ferrosilicon nitride |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1226425C (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1300341C (en) * | 2005-07-19 | 2007-02-14 | 中国地质大学（北京） | Tamping plug for blast furnace spout and its preparation method |
| CN101717254A (en) * | 2009-12-01 | 2010-06-02 | 陕西盛华冶化有限公司 | Masonry material of silicon-calcium-iron alloy furnace taphole and maintaining technology |
| CN101857445A (en) * | 2010-05-21 | 2010-10-13 | 河南华西耐火材料有限公司 | Anhydrous stemming for blast furnace |
| CN101528635B (en) * | 2006-10-20 | 2012-05-30 | 黑崎播磨株式会社 | Mud material |
| CN101602609B (en) * | 2009-07-24 | 2012-07-25 | 中国地质大学（北京） | Method for preparing Fe-Si3N4 fireproof raw material |
| CN101580397B (en) * | 2009-06-16 | 2012-09-05 | 武汉钢铁(集团)公司 | Blast furnace mud gun with low content of benzopyrene |
| CN108218393A (en) * | 2017-12-14 | 2018-06-29 | 中国地质大学（北京） | It is a kind of to prepare Al using gangue2O3The method of-SiC-C systems stemming fire-proof material |
| CN110606758A (en) * | 2019-09-29 | 2019-12-24 | 鞍钢股份有限公司 | Stemming for blast furnace by taking fly ash as partial raw material and preparation method |
| CN114031381A (en) * | 2021-10-22 | 2022-02-11 | 北京科技大学 | Silicon brick added with silicon iron nitride and preparation method thereof |
-
2003
- 2003-11-24 CN CN 200310115047 patent/CN1226425C/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1300341C (en) * | 2005-07-19 | 2007-02-14 | 中国地质大学（北京） | Tamping plug for blast furnace spout and its preparation method |
| CN101528635B (en) * | 2006-10-20 | 2012-05-30 | 黑崎播磨株式会社 | Mud material |
| CN101580397B (en) * | 2009-06-16 | 2012-09-05 | 武汉钢铁(集团)公司 | Blast furnace mud gun with low content of benzopyrene |
| CN101602609B (en) * | 2009-07-24 | 2012-07-25 | 中国地质大学（北京） | Method for preparing Fe-Si3N4 fireproof raw material |
| CN101717254A (en) * | 2009-12-01 | 2010-06-02 | 陕西盛华冶化有限公司 | Masonry material of silicon-calcium-iron alloy furnace taphole and maintaining technology |
| CN101857445A (en) * | 2010-05-21 | 2010-10-13 | 河南华西耐火材料有限公司 | Anhydrous stemming for blast furnace |
| CN108218393A (en) * | 2017-12-14 | 2018-06-29 | 中国地质大学（北京） | It is a kind of to prepare Al using gangue2O3The method of-SiC-C systems stemming fire-proof material |
| CN110606758A (en) * | 2019-09-29 | 2019-12-24 | 鞍钢股份有限公司 | Stemming for blast furnace by taking fly ash as partial raw material and preparation method |
| CN110606758B (en) * | 2019-09-29 | 2021-09-14 | 鞍钢股份有限公司 | Stemming for blast furnace by taking fly ash as partial raw material and preparation method |
| CN114031381A (en) * | 2021-10-22 | 2022-02-11 | 北京科技大学 | Silicon brick added with silicon iron nitride and preparation method thereof |
| CN114031381B (en) * | 2021-10-22 | 2022-09-23 | 北京科技大学 | Silicon brick added with silicon iron nitride and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1226425C (en) | 2005-11-09 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Beijing Junda Hi Tech Co Ltd Assignor: University of Science and Technology Beijing Contract fulfillment period: 2008.10.1 to 2013.10.1 contract change Contract record no.: 2008990000937 Denomination of invention: An anhydrous Al#-[2]O#-[3]-SiC-C system containing ferrosilicon nitride Granted publication date: 20051109 License type: Exclusive license Record date: 20081024 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.10.1 TO 2013.10.1; CHANGE OF CONTRACT Name of requester: BEIJING KEDA FANGXING HIGH NEW TECHNOLOGY CO., LTD Effective date: 20081024 |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051109 Termination date: 20131124 |