CN1226425C - 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
- Publication number
- CN1226425C CN1226425C CN 200310115047 CN200310115047A CN1226425C CN 1226425 C CN1226425 C CN 1226425C CN 200310115047 CN200310115047 CN 200310115047 CN 200310115047 A CN200310115047 A CN 200310115047A CN 1226425 C CN1226425 C CN 1226425C
- Authority
- CN
- China
- Prior art keywords
- sic
- stemming
- quality
- silicon nitride
- ferrosilicon nitride
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229910000519 Ferrosilicon Inorganic materials 0.000 title claims abstract description 14
- 150000004767 nitrides Chemical class 0.000 title abstract 3
- 239000000203 mixture Substances 0.000 claims abstract description 10
- 229910052742 iron Inorganic materials 0.000 claims abstract description 6
- 229910004298 SiO 2 Inorganic materials 0.000 claims abstract description 5
- 239000000843 powder Substances 0.000 claims abstract description 5
- 239000000126 substance Substances 0.000 claims abstract description 5
- 229910010413 TiO 2 Inorganic materials 0.000 claims abstract description 4
- 239000004615 ingredient Substances 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims abstract description 3
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 5
- 239000004927 clay Substances 0.000 abstract description 4
- 238000005245 sintering Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 abstract 2
- 238000001514 detection method Methods 0.000 abstract 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 9
- 230000002829 reductive effect Effects 0.000 description 9
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 7
- 229910010271 silicon carbide Inorganic materials 0.000 description 7
- 239000011449 brick Substances 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- INJRKJPEYSAMPD-UHFFFAOYSA-N aluminum;silicic acid;hydrate Chemical compound O.[Al].[Al].O[Si](O)(O)O INJRKJPEYSAMPD-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052850 kyanite Inorganic materials 0.000 description 1
- 239000010443 kyanite Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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- Glass Compositions (AREA)
- Ceramic Products (AREA)
Abstract
本发明提供了一种含氮化硅铁的Al2O3-SiC-C体系无水炮泥，其特征在于：化学成分质量百分数为：Al2O3：30～60%，SiC：5～17%，C：10～25%，Si3N4：5～20%，SiO2：2～10%，Fe2O3：2～7%，其他成分：2～7%；在原料中加入的3-20质量%氮化硅铁细粉，在检测过程中以Fe2O3的形式计算在内。所述的其他成分包括：CaO、MgO、TiO2、K2O、NaO。本发明的优点在于：解决了炮泥使用中存在的烧结缓慢、开孔困难等问题，改善炮泥的性能；同时降低生产成本。The invention provides an Al 2 O 3 -SiC-C system anhydrous taphole clay containing ferrosilicon nitride, which is characterized in that: the mass percentage of the chemical composition is: Al 2 O 3 : 30-60%, SiC: 5-60%. 17%, C: 10～25%, Si 3 N 4 : 5～20%, SiO 2 : 2～10%, Fe 2 O 3 : 2～7%, other ingredients: 2～7%; The 3-20 mass% ferrosilicon nitride fine powder is calculated in the form of Fe 2 O 3 during the detection process. The other components mentioned include: CaO, MgO, TiO 2 , K 2 O, NaO. The invention has the advantages of solving the problems of slow sintering and difficulty in opening holes in the use of the clay, improving the performance of the clay and reducing the production cost at the same time.
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, and reduced working strength of workers greatly, reduced cost simultaneously.
Claims (2)
1, a kind of Al of nitrogen ferrosilicon
2O
3-SiC-C system anhydrous stemming 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%; Described other compositions comprise: CaO, MgO, TiO
2, K
2O, NaO; 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: 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 CN1544660A (en) | 2004-11-10 |
| CN1226425C true CN1226425C (en) | 2005-11-09 |
Family
ID=34337227
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| 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 |
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| Country | Link |
|---|---|
| CN (1) | CN1226425C (en) |
Families Citing this family (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 |
| WO2008047868A1 (en) * | 2006-10-20 | 2008-04-24 | Krosakiharima Corporation | 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） | A kind of method for preparing Fe-Si3N4 refractory 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 |
| CN101857445B (en) * | 2010-05-21 | 2012-07-25 | 河南华西耐火材料有限公司 | Anhydrous stemming for blast furnace |
| CN108218393B (en) * | 2017-12-14 | 2021-04-09 | 中国地质大学（北京） | A method for preparing Al2O3-SiC-C series tappet refractory by using coal gangue |
| 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 |
| 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 |
-
2003
- 2003-11-24 CN CN 200310115047 patent/CN1226425C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1544660A (en) | 2004-11-10 |
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| 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 |
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| 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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Granted publication date: 20051109 Termination date: 20131124 |