CN100366582C - Magnesia brick containing antioxidant C-TiN composite powder and method for preparing the same - Google Patents
Magnesia brick containing antioxidant C-TiN composite powder and method for preparing the same Download PDFInfo
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- CN100366582C CN100366582C CNB2006100464340A CN200610046434A CN100366582C CN 100366582 C CN100366582 C CN 100366582C CN B2006100464340 A CNB2006100464340 A CN B2006100464340A CN 200610046434 A CN200610046434 A CN 200610046434A CN 100366582 C CN100366582 C CN 100366582C
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- carbon brick
- magnesia carbon
- tin
- composite granule
- oxidation inhibitor
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Abstract
The present invention discloses a magnesia carbon brick containing antioxidant of 'C-TiN composite powders ' and a production method thereof. The magnesia carbon brick can improve oxidation resistance and slag erosion resistance properties. The magnesia carbon brick provided by the present invention comprises the following components: 70 to 90% of MgO, 6 to 22% of C, 0.5 to 10% of TiN, 0 to 5% of Al, 0 to 5% of Si and 0 to 2% of B4C. The production method of the magnesia carbon brick comprises the processes of mixture of raw materials, forming and heat treatment and is characterized in that the raw materials comprise the follow components of the weight percentage: 70 to 90% of aggregate of fused magnesia, 5 to 20% of substrate of flake graphite, 2 to 5% of binding agent and 1 to 10% of antioxidant. The C-TiN composite powders are taken as the antioxidant of the magnesia carbon brick to prevent the oxidation of the graphite in the magnesia carbon brick and considerably improve slag resistance of active magnesia carbon brick for ladle slag lines; therefore, the service life of the magnesia carbon brick can be increased by 10% to 50%.
Description
Technical field
The present invention relates to a kind of carbon containing refractory and production method thereof, especially the magnesia carbon brick and the production method thereof of Containing antioxidants " C-TiN composite granule ".
Background technology
Magnesia carbon brick is widely used a kind of carbon containing refractory in the ferrous metallurgy industry, is mainly used in converter and ladle working lining position.Existing magnesia carbon brick is the same with other carbon containing refractory, has the low weakness of oxidation-resistance difference and intensity.People have studied and introduced some metals or the anti-blocking oxidation at high temperature of non-metallic additive in magnesia carbon bricks for this reason, and anti-oxidizing agent commonly used has Al, Si, SiC, B
4C etc., but all there is certain shortcoming in these oxidation inhibitors, as adding the Al that Al powder and C reaction generates
4C
3Easy aquation, the introducing of Al powder also can cause hyperthermia expansion in the magnesia carbon brick, make magnesia carbon brick produce serious be full of cracks; Metal Si additive has disadvantageous effect to the hot strength and the refractoriness of magnesia carbon brick; The reaction product of SiC is SiO
2, can continue reaction with the impurity in magnesia and the graphite and generate low-melting mineral facies, cause the erosion-resisting characteristics of magnesia carbon brick to descend; B
4C oxidation Generation Liquid phase oxidation boron, the MgO in boron oxide and the magnesia carbon brick continues the 3MgOB that reaction generates 1356 ℃ of fusing points
2O
3, can reduce the slag resistance of magnesia carbon brick equally greatly.
Patent " antioxidant of carbon containing refractory ", publication number: CN1237562A, the antioxidant of having introduced a kind of carbon containing refractory comprise at least a composition in zinc powder or zinc powder and aluminium, magnesium, silicon, silicon calcium powder, silicon carbide, norbide, aluminium-magnesium alloy powder, the silicon nitride powder.Can reduce the goods resistance to slag corrosion equally.
Summary of the invention
The invention provides the magnesia carbon brick and the production method thereof of a kind of containing of " C-TiN composite granule " oxidation inhibitor, make magnesia carbon brick can improve oxidation-resistance and can improve resistance to slag corrosion again.
Magnesia carbon brick provided by the invention comprises following component: MgO 70～90%, C 6～22%, TiN 0.5～10%, Al 0～5%, Si 0～5%, B
4C 0～2%.
Magnesia carbon brick production method provided by the invention comprises that raw material is mixing, moulding, heat treatment process, it is characterized in that raw material comprises aggregate, matrix, wedding agent and oxidation inhibitor, and wherein each weight percentages of components is as follows:
Electrosmelted magnesite clinker 70～90%
Crystalline flake graphite 5～20%
Wedding agent 2～5%
Oxidation inhibitor 1～10%
Wherein said electrosmelted magnesite clinker is a MgO content 95～99%, and critical particle is 3～8mm;
Wherein said crystalline flake graphite is a C content 90～98%, granularity≤0.15mm;
Wherein said wedding agent is a resol, and its remaining carbon 〉=45%, normal temperature are down for liquid or Powdered;
Wherein said oxidation inhibitor comprises the C-TiN composite granule, TiN in the composite granule 〉=80%, C≤10%, TiO
2≤ 5%, or C-TiN composite granule and metal A l powder, metal Si powder, B
4Wherein one or more of C powder.
Raw material according to this prescription mixing ingredient after with hydraulic pressure or friction press moulding, thermal treatment temp is 110 ℃～250 ℃, heat treatment time 4 hours～30 hours.
TiN has fusing point height (2950 ℃), hardness is big, difficult by the characteristics of wetting metal, adopt the C-TiN composite granule to make the magnesia carbon brick oxidation inhibitor, can prevent the oxidation of graphite in the magnesia carbon brick, and increase substantially the slag resistance that ladle slag line is now used magnesia carbon brick, improve 10%～50% work-ing life, reduce the consumption of resources such as magnesia, graphite, improve the utilization ratio of magnesia resource.
Description of drawings
Fig. 1 is the process flow sheet of the magnesia carbon brick production method of Containing antioxidants " C-TiN composite granule ".
Embodiment
Embodiment 1
The magnesia carbon brick of Containing antioxidants " C-TiN composite granule " contains MgO 82%, C 12%, TiN 3%.
The production method of the magnesia carbon brick of Containing antioxidants " C-TiN composite granule " comprises that raw material is mixing, moulding, heat treatment process, and the prescription of this magnesia carbon brick includes aggregate, matrix, and wedding agent and oxidation inhibitor, wherein each weight percentages of components is as follows:
Electrosmelted magnesite clinker 82～84%
Crystalline flake graphite 9～11%
Wedding agent 2～4%
Oxidation inhibitor 3～5%
Wherein said electrosmelted magnesite clinker MgO content 〉=97%, critical particle is 5mm;
Wherein said crystalline flake graphite is C content 〉=97%, granularity≤0.15mm;
Wherein said wedding agent is its remaining carbon of heat-reactive phenolic resin 〉=45%, and normal temperature is down for liquid;
Wherein said oxidation inhibitor is the C-TiN composite granule, TiN in the composite granule 〉=80%, C≤10%, TiO
2≤ 5%;
According to this prescription mixing ingredient, then in hydraulic press 250MPa compacted under, thermal treatment temp is 200 ℃, heat treatment time 24 hours.
Embodiment 2
The magnesia carbon brick of Containing antioxidants " C-TiN composite granule " contains MgO 81%, C12%, TiN1.5%, Al1.5%.
The production method of the magnesia carbon brick of Containing antioxidants " C-TiN composite granule " comprises that raw material is mixing, moulding, heat treatment process, and the prescription of this magnesia carbon brick includes aggregate, matrix, and wedding agent and oxidation inhibitor, wherein each weight percentages of components is as follows:
Electrosmelted magnesite clinker 82～84%
Crystalline flake graphite 9～11%
Wedding agent 2～4%
Oxidation inhibitor 3～5%
Wherein said electrosmelted magnesite clinker MgO content 〉=97%, critical particle is 5mm;
Wherein said crystalline flake graphite is C content 〉=97%, granularity≤0.15mm;
Wherein said wedding agent is its remaining carbon of heat-reactive phenolic resin 〉=45%, and normal temperature is down for liquid;
Wherein said oxidation inhibitor comprises C-TiN composite granule 60% and metal A l powder 40%;
According to this prescription mixing ingredient, then in hydraulic press 250MPa compacted under, thermal treatment temp is 200 ℃, heat treatment time 24 hours.
Embodiment 3
The magnesia carbon brick of Containing antioxidants " C-TiN composite granule " contains MgO 80～82%, C11～13%, TiN 0.5～2.5%, Al 0.5～2%, Si0.5～2%.
The production method of the magnesia carbon brick of Containing antioxidants " C-TiN composite granule " comprises that raw material is mixing, moulding, heat treatment process, and this magnesia carbon brick composition of raw materials includes aggregate, matrix, and wedding agent, oxidation inhibitor, wherein each weight percentages of components is as follows:
Electrosmelted magnesite clinker 82～84%
Crystalline flake graphite 9～11%
Wedding agent 2～4%
Oxidation inhibitor 3～5%
Wherein said electrosmelted magnesite clinker MgO content 〉=97%, critical particle is 5mm;
Wherein said crystalline flake graphite is C content 〉=97%, granularity≤0.15mm;
Wherein said wedding agent is a heat-reactive phenolic resin, and its remaining carbon 〉=45%, normal temperature are down for liquid;
Wherein said oxidation inhibitor comprises C-TiN composite granule 30～50%, metal A l powder 20～40% and metal Si powder 20～40%;
According to this prescription mixing ingredient, then in hydraulic press 250MPa compacted under, thermal treatment temp is 200 ℃, heat treatment time 24 hours.
Embodiment 4
The magnesia carbon brick of Containing antioxidants " C-TiN composite granule " contains MgO 80～82%, C11～13%, TiN 0.5～3%, Al 0.5～2%, B
4C 0.3～1%.
The production method of the magnesia carbon brick of Containing antioxidants " C-TiN composite granule " comprises that raw material is mixing, moulding, heat treatment process, and this magnesia carbon brick raw material includes aggregate, matrix, and wedding agent, oxidation inhibitor, wherein each weight percentages of components is as follows:
Electrosmelted magnesite clinker 82～84%
Crystalline flake graphite 9～11%
Wedding agent 2～4%
Oxidation inhibitor 3～5%
Wherein said electrosmelted magnesite clinker MgO content 〉=97%, critical particle is 5mm;
Wherein said crystalline flake graphite is C content 〉=97%, granularity≤0.15mm;
Wherein said wedding agent is its remaining carbon of heat-reactive phenolic resin 〉=45%, and normal temperature is down for liquid;
Wherein said oxidation inhibitor comprises C-TiN composite granule 30～60%, metal A l powder 20～40% and B
4C powder 10～30%;
According to this prescription mixing ingredient, then in hydraulic press 250MPa compacted under, thermal treatment temp is 200 ℃, heat treatment time 24 hours.
The magnesia carbon brick that aforesaid method is made carries out the oxidation-resistance detection in 1100 ℃ of insulation 1h, carries out resistance to slag corrosion with static crucible method in 1600 ℃ * 3h and detects.Detected result shows: contain the oxidated layer thickness of the magnesia carbon brick oxidated layer thickness of TiN less than the magnesia carbon brick of no oxidation inhibitor, illustrate that TiN has played oxidation-protective effect.It is oxidized that its reason is that TiN has precedence over C at low temperature, and the TiN oxidation generates TiO
2Pore has been sealed in volumetric expansion, plays anti-oxidation effect.Behind slag corrosion resistance, compare with the magnesia carbon brick of no oxidation inhibitor, contain TiN or contain TiN and the magnesia carbon brick crucible inwall of Al powder and other oxidation inhibitor all relatively more neat, no reaming phenomenon, remain big steel slag, the scouring degree of depth is little, shows that the introducing of TiN obviously improves the slag resistance of magnesia carbon brick.When its reason is high temperature, TiO in the former brick layer of magnesia carbon brick
2Generate 2MgOTiO with the MgO reaction
2Alleviate slag penetration, TiO in the magnesia carbon brick responding layer
2Generate CaOTiO with CaO reaction in the slag
2, the solid-fixed degree of closing that has improved between the periclasite crystal has stoped the further reactive infiltration of slag, thereby has increased substantially the resistance to slag corrosion that contains the TiN magnesia carbon brick.
Claims (10)
1. a magnesia carbon brick that contains " C-TiN composite granule " oxidation inhibitor is characterized in that this magnesia carbon brick comprises following component: MgO 70～90%, C 6～22%, TiN 0.5～10%, Al 0～5%, Si 0～5%, B
4C 0～2%.
2. magnesia carbon brick according to claim 1 is characterized in that this magnesia carbon brick comprises following component: MgO 82%, C 12%, TiN 3%.
3. magnesia carbon brick according to claim 1 is characterized in that this magnesia carbon brick comprises following component: MgO 81%, C 12%, TiN 1.5%, Al 1.5%.
4. magnesia carbon brick according to claim 1 is characterized in that this magnesia carbon brick comprises following component: MgO 80～82%, C 11～13%, TiN 0.5～2.5%, Al 0.5～2%, Si 0.5～2%.
5. magnesia carbon brick according to claim 1 is characterized in that this magnesia carbon brick comprises following component: MgO 80～82%, C 11～13%, TiN 0.5～3%, Al 0.5～2%, B
4C 0.3～1%.
6. according to claim 1 containing " C-TiN composite granule " oxidation inhibitor the production method of magnesia carbon brick, comprise that raw material is mixing, moulding, heat treatment process, it is characterized in that composition of raw materials comprises aggregate, matrix, wedding agent and oxidation inhibitor, wherein each weight percentages of components is as follows:
Electrosmelted magnesite clinker 70～90%
Crystalline flake graphite 5～20%
Wedding agent 2～5%
Oxidation inhibitor 1～10%
Wherein said electrosmelted magnesite clinker is a MgO content 95～99%, and critical particle is 3～8mm;
Wherein said crystalline flake graphite is a C content 90～98%, granularity≤0.15mm;
Wherein said wedding agent is a resol, and its remaining carbon 〉=45%, normal temperature are down for liquid or Powdered;
Wherein said oxidation inhibitor is the C-TiN composite granule, TiN in the composite granule 〉=80%, C≤10%, TiO
2≤ 5%, or C-TiN composite granule and metal A l powder, metal Si powder, B
4C powder one or more mixture wherein;
According to behind this prescription mixing ingredient with hydraulic pressure or friction press moulding, thermal treatment temp is 110 ℃～250 ℃, heat treatment time 4 hours～30 hours.
7. according to claim 6 containing " C-TiN composite granule " oxidation inhibitor magnesia carbon brick production method, it is characterized in that said oxidation inhibitor is the C-TiN composite granule, TiN in the composite granule 〉=80%, C≤10%, TiO
2≤ 5%.
8. according to claim 6 containing " C-TiN composite granule " oxidation inhibitor magnesia carbon brick production method, it is characterized in that said oxidation inhibitor comprises C-TiN composite granule 60% and metal A l powder 40%.
9. according to claim 6 containing " C-TiN composite granule " oxidation inhibitor magnesia carbon brick production method, it is characterized in that said oxidation inhibitor comprises C-TiN composite granule 30～50%, metal A l powder 20～40% and metal Si powder 20～40%.
10. according to claim 6 containing " C-TiN composite granule " oxidation inhibitor magnesia carbon brick production method, it is characterized in that said oxidation inhibitor comprises C-TiN composite granule 30～60%, metal A l powder 20～40% and B
4C powder 10～30%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100464340A CN100366582C (en) | 2006-04-27 | 2006-04-27 | Magnesia brick containing antioxidant C-TiN composite powder and method for preparing the same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100464340A CN100366582C (en) | 2006-04-27 | 2006-04-27 | Magnesia brick containing antioxidant C-TiN composite powder and method for preparing the same |
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|---|---|
| CN1844053A CN1844053A (en) | 2006-10-11 |
| CN100366582C true CN100366582C (en) | 2008-02-06 |
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|---|---|---|---|
| CNB2006100464340A Expired - Fee Related CN100366582C (en) | 2006-04-27 | 2006-04-27 | Magnesia brick containing antioxidant C-TiN composite powder and method for preparing the same |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101367669B (en) * | 2008-09-27 | 2012-03-21 | 武汉科技大学 | Low carbon magnesium carbon brick containing B4C-C composite powder and nano TiC powder, and method of manufacturing the same |
| CN102276275A (en) * | 2011-07-21 | 2011-12-14 | 辽宁科技大学 | Method for producing magnesium carbon bricks by using microwave heating technology |
| CN107382339A (en) * | 2017-07-18 | 2017-11-24 | 海城市中兴镁质合成材料有限公司 | A kind of ladle gunning refractory and preparation method for adding titanium nitride |
| CN108440001A (en) * | 2018-03-12 | 2018-08-24 | 海城利尔麦格西塔材料有限公司 | A kind of the converter body brick and its production method of addition titanium nitride |
| CN114014638A (en) * | 2021-09-10 | 2022-02-08 | 河南竹林庆州耐火材料有限公司 | Preparation method of magnesia carbon brick capable of effectively resisting intense erosion of titanium-rich slag |
| CN115893990B (en) * | 2022-11-28 | 2023-09-08 | 安徽工业大学 | Low-carbon magnesia carbon brick |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1019782B (en) * | 1987-09-03 | 1992-12-30 | 金属封闭物有限公司 | Closures for containers and manufacture method thereof |
| CN1153757A (en) * | 1995-11-29 | 1997-07-09 | 济南市镁碳砖厂 | Magnesium-carbon firebrick with metal coating and its prodn process |
| CN1237562A (en) * | 1999-02-25 | 1999-12-08 | 宝山钢铁(集团)公司 | Anti-oxidizing agent for carbon-contained fireproof material |
-
2006
- 2006-04-27 CN CNB2006100464340A patent/CN100366582C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1019782B (en) * | 1987-09-03 | 1992-12-30 | 金属封闭物有限公司 | Closures for containers and manufacture method thereof |
| CN1153757A (en) * | 1995-11-29 | 1997-07-09 | 济南市镁碳砖厂 | Magnesium-carbon firebrick with metal coating and its prodn process |
| CN1237562A (en) * | 1999-02-25 | 1999-12-08 | 宝山钢铁(集团)公司 | Anti-oxidizing agent for carbon-contained fireproof material |
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| CN1844053A (en) | 2006-10-11 |
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Assignee: Yingkou Bayuquan Refractory Material Co., Ltd. Assignor: Anshan Univ. of Science and Technology Contract fulfillment period: 2008.7.22 to 2013.7.22 contract change Contract record no.: 2009210000081 Denomination of invention: Magnesia brick containing antioxidant C-TiN composite powder and its production method Granted publication date: 20080206 License type: Exclusive license Record date: 2009.4.7 |
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Assignee: Yingkou Bayuquan Refractory Material Co., Ltd. Assignor: Anshan Univ. of Science and Technology Contract fulfillment period: 2008.7.22 to 2013.7.22 contract change Contract record no.: 2009210000081 Denomination of invention: Magnesia brick containing antioxidant C-TiN composite powder and its production method Granted publication date: 20080206 License type: Exclusive license Record date: 2009.4.7 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.7.22 TO 2013.7.22; CHANGE OF CONTRACT Name of requester: YINGKOU BAYUQUAN REFRACTORY MATERIAL CO., LTD. Effective date: 20090407 |
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