CN102765953A - Magnesia carbon brick containing composite antioxidant and preparation thereof - Google Patents
Magnesia carbon brick containing composite antioxidant and preparation thereof Download PDFInfo
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- CN102765953A CN102765953A CN2012102777595A CN201210277759A CN102765953A CN 102765953 A CN102765953 A CN 102765953A CN 2012102777595 A CN2012102777595 A CN 2012102777595A CN 201210277759 A CN201210277759 A CN 201210277759A CN 102765953 A CN102765953 A CN 102765953A
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- carbon brick
- magnesia carbon
- magnesite clinker
- electrosmelted magnesite
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Abstract
The invention relates to a magnesia carbon brick containing a composite antioxidant, which is prepared from the following raw materials in percentages by weight: 26-30% of fused magnesite with particle size being larger than 3mm and smaller than or equal to 5mm, 25-28% of fused magnesite with particle size being larger than 1mm and smaller than or equal to 3mm, 9-22% of fused magnesite with particle size being larger than 0.088mm and smaller than or equal to 1mm, 7-15% of fused magnesite with particle size being larger than 0mm and smaller than or equal to 0.88mm, 5-20% of graphite, 2-4% of composite antioxidant, 2-5% of asphalt and 2-4% of phenolic resin. Compared with the prior art, the magnesia carbon brick containing a composite antioxidant has the beneficial effects that the used magnalium powder-titanium diboride composite antioxidant is wide in antioxidation temperature range, better in antioxidation performance and scouring resistance and long in service life; at 1000 DEG C, magnalium powder is oxidized much earlier than graphite, and Al2O3 and MgO are generated through oxidation in company of a certain volume expansion.
Description
Technical field
The present invention relates to contain the carbon brick field, particularly a kind of magnesia carbon brick that contains compound antioxidizer and preparation method thereof with not burning in the ferrous metallurgy.
Background technology
Magnesia carbon brick has refractoriness height, anti-slag and invades that performance is good, resistance to heat shocks reaches by force has good characteristics such as good, stable performance, thermal conductivity is good, wear-resistant, spalling resistance is good under the high temperature, on electric furnace, converter, ladle and refining furnace, has been used widely, simultaneously; Because magnesia carbon brick does not need high temperature to burn till, save the energy, manufacture craft is simple; Thereby applied rapidly by world many countries, and along with ironmaking, the development of Steel industry and the raising of production efficiency, the performance requriements of refractory materials is also improved constantly; How further to improve the high-temperature behavior of magnesia carbon brick, slag resistance and antioxidant property, thus increase the service life; Reduce ton steel refractory consumption amount, remain one of problem of domestic and international refractory materials research, at present; The used inhibitor of magnesia carbon brick is generally Al, Si, metal simple-substance powders such as Mg-Al; These metal-powders at low temperatures just can be oxidized prior to graphite; Effectively improve the middle low temperature antioxidant effect of the magnesia carbon brick of knowing clearly, still, magnesia carbon brick is used in working temperature usually in the High Temperature Furnaces Heating Apparatus more than 1500 ℃; Under high-temperature condition,, should in magnesia carbon brick, introduce under a kind of low temperature relatively stable and have the inhibitor of antioxidant effect preferably under the high temperature again so want fundamentally to solve the problem of magnesia carbon brick oxidation because very easily oxidized metal-powder is oxidized fully.
Summary of the invention
The object of the present invention is to provide a kind of magnesia carbon brick that adds compound antioxidizer, the antioxidant effect that makes magnesia carbon brick in whole use temperature interval, have globality has improved magnesia carbon brick anti-scour property and work-ing life.
For realizing above-mentioned purpose, the present invention adopts following technical scheme to realize:
A kind of magnesia carbon brick that contains compound antioxidizer and preparation method thereof, this magnesia carbon brick is processed by following raw materials by weight:
It processes step:
1) by proportion of raw materials and requirement; Accurately take by weighing electrosmelted magnesite clinker, graphite, compound antioxidizer, resol and pitch; Earlier the electrosmelted magnesite clinker of the electrosmelted magnesite clinker of the electrosmelted magnesite clinker of 3mm＜granularity≤5mm, 1mm＜granularity≤3mm and 0.088mm＜granularity≤1mm was joined in the sand mill premix stone roller 3～5 minutes; And then adding resol adds remaining raw material, the mixed stone roller 10～15 minutes after mixing 3～5 minutes;
2) material that mixes is added in the mould, on 600 tons～1200 tons friction presses, pressurize, process base substrate;
3) base substrate is sent into the dry kiln drying, 40～60 ℃ of dry kiln hot-wind inlet temperature, temperature is 180～200 ℃ between heat preservation zone, and 40～60 ℃ of temperature outs are not less than 16 hours time of drying;
Described compound antioxidizer by magnesium aluminum-alloy powder and TiB2 by weight being (60～70): the ratio of (40～30) is formulated.
TiB in the described TiB2
2Content is weight percentage 29～38.5%.
Mg content is weight percentage 26～34% in the described magnesium aluminum-alloy powder, and Al content is weight percentage 28～36%.
Compared with prior art, the invention has the beneficial effects as follows:
" magnesium aluminum-alloy powder and the TiB2 compound antioxidizer " introduced among the present invention has the oxidation resistance temperature interval of broad; Not only having good oxidization resistance can; And have anti-scour property and work-ing life preferably; Be lower than under 1000 ℃ the situation, it is oxidized that magnesium aluminum-alloy powder can have precedence over graphite, the Al that oxidation generates
2O
3With MgO and follow certain volumetric expansion; Simultaneously, the Al of generation
2O
3Have very high activity with MgO and be easy to react and generate magnesium-aluminium spinel and with 8% volumetric expansion, further sealed porosity stops free oxygen and the entering of slag in the molten steel, significantly improves the anti-oxidant and anti-scour property of magnesia carbon brick; TiB2 is metastable being lower than 1000 ℃, can be by the free oxygen oxidation of molten steel or slag, the B that in the process of oxidation, generates when temperature is higher than 1000 ℃
2O
3Meeting and MgO reaction generate a spot of eutectic magnesium borate, and the generation of a spot of liquid phase can not exert an influence to the integral high-temperature use properties of magnesia carbon brick, but also can play the not oxidized effect of sealed porosity protection graphite.
Embodiment
Following specific embodiments of the invention further specifies:
Embodiment 1
(1) proportioning raw materials is seen table 1
(2) preparation method is following:
1) presses the proportioning of table 1; Accurately take by weighing electrosmelted magnesite clinker, graphite, resol, magnesium aluminum-alloy powder and TiB2 compound antioxidizer and pitch; Earlier the electrosmelted magnesite clinker of the electrosmelted magnesite clinker of the electrosmelted magnesite clinker of 3mm＜granularity≤5mm, 1mm＜granularity≤3mm and 0.088mm＜granularity≤1mm was joined in the sand mill premix stone roller 3～5 minutes; And then adding resol adds remaining raw material, the mixed stone roller 10～15 minutes after mixing 3～5 minutes;
2) material that mixes is added in the mould, on 600 tons～1000 tons friction presses, pressurize, process base substrate;
3) base substrate is sent into the dry kiln drying, 40～60 ℃ of dry kiln hot-wind inlet temperature, temperature is 180～200 ℃ between heat preservation zone, and 40～60 ℃ of temperature outs are not less than 16 hours time of drying.
Testing of finished products is seen table 2.
Embodiment 2
(1) proportioning raw materials is seen table 1
(2) preparation method is following:
1) presses the proportioning of table 1; Accurately take by weighing electrosmelted magnesite clinker, graphite, resol, magnesium aluminum-alloy powder and TiB2 compound antioxidizer and pitch; Earlier the electrosmelted magnesite clinker of the electrosmelted magnesite clinker of the electrosmelted magnesite clinker of 3mm＜granularity≤5mm, 1mm＜granularity≤3mm and 0.088mm＜granularity≤1mm was joined in the sand mill premix stone roller 3～5 minutes; And then adding resol adds remaining raw material, the mixed stone roller 10～15 minutes after mixing 3～5 minutes;
2) material that mixes is added in the mould, on 600 tons～1000 tons friction presses, pressurize, process base substrate;
3) base substrate is sent into the dry kiln drying, 40～60 ℃ of dry kiln hot-wind inlet temperature, temperature is 180～200 ℃ between heat preservation zone, and 40～60 ℃ of temperature outs are not less than 16 hours time of drying.
Testing of finished products is seen table 2.
Embodiment 3
(1) proportioning raw materials is seen table 1
(2) preparation method is following:
1) presses the proportioning of table 1; Accurately take by weighing electrosmelted magnesite clinker, graphite, resol, magnesium aluminum-alloy powder and TiB2 compound antioxidizer and pitch; Earlier the electrosmelted magnesite clinker of the electrosmelted magnesite clinker of the electrosmelted magnesite clinker of 3mm＜granularity≤5mm, 1mm＜granularity≤3mm and 0.088mm＜granularity≤1mm was joined in the sand mill premix stone roller 3～5 minutes; And then adding resol adds remaining raw material, the mixed stone roller 10～15 minutes after mixing 3～5 minutes;
2) material that mixes is added in the mould, on 600 tons～1000 tons friction presses, pressurize, process base substrate;
3) base substrate is sent into the dry kiln drying, 40～60 ℃ of dry kiln hot-wind inlet temperature, temperature is 180～200 ℃ between heat preservation zone, and 40～60 ℃ of temperature outs are not less than 16 hours time of drying.
Testing of finished products is seen table 2.
Embodiment 4
(1) proportioning raw materials is seen table 1
(2) preparation method is following:
1) presses the proportioning of table 1; Accurately take by weighing electrosmelted magnesite clinker, graphite, resol, magnesium aluminum-alloy powder and TiB2 compound antioxidizer and pitch; Earlier the electrosmelted magnesite clinker of the electrosmelted magnesite clinker of the electrosmelted magnesite clinker of 3mm＜granularity≤5mm, 1mm＜granularity≤3mm and 0.088mm＜granularity≤1mm was joined in the sand mill premix stone roller 3～5 minutes; And then adding resol adds remaining raw material, the mixed stone roller 10～15 minutes after mixing 3～5 minutes;
2) material that mixes is added in the mould, on 600 tons～1000 tons friction presses, pressurize, process base substrate;
3) base substrate is sent into the dry kiln drying, 40～60 ℃ of dry kiln hot-wind inlet temperature, temperature is 180～200 ℃ between heat preservation zone, and 40～60 ℃ of temperature outs are not less than 16 hours time of drying.
Testing of finished products is seen table 2.
Comparative Examples
(1) proportioning raw materials is seen table 1
(2) preparation method is following:
1) presses the proportioning of table 1; Accurately take by weighing electrosmelted magnesite clinker, graphite, resol, magnesium aluminium powder and pitch; Earlier the electrosmelted magnesite clinker of the electrosmelted magnesite clinker of the electrosmelted magnesite clinker of 3mm＜granularity≤5mm, 1mm＜granularity≤3mm and 0.088mm＜granularity≤1mm was joined in the sand mill premix stone roller 3～5 minutes; And then adding resol adds remaining raw material, the mixed stone roller 10～15 minutes after mixing 3～5 minutes;
2) material that mixes is added in the mould, on 600 tons～1000 tons friction presses, pressurize, process base substrate;
3) base substrate is sent into the dry kiln drying, 40～60 ℃ of dry kiln hot-wind inlet temperature, temperature is 180～200 ℃ between heat preservation zone, and 40～60 ℃ of temperature outs are not less than 16 hours time of drying.
The finished product test result sees table 2.
Volume density, apparent porosity, cold crushing strength detect according to GB GB/T2997-2000, GB/T5072-2008 respectively.
High temperature break resistant intensity: detect according to GB GB/T3002-2004 high temperature break resistant intensity TP.
The detection method of erosion-resisting characteristics: press the proportioning of table 1, use static crucible method, bore at the article center position and make the cinder hole of Φ 50mm * 50mm, and in cinder hole, be respectively charged into 40 gram slags, in 1600 ℃ of insulations 6 hours, the hole expansibility of test product.
Table 1
Table 2
Described compound antioxidizer by magnesium aluminum-alloy powder and TiB2 by weight being (60～70): the ratio of (40～30) is formulated.TiB in the TiB2
2Content is weight percentage 29～38.5%.Mg content is weight percentage 26～34% in the magnesium aluminum-alloy powder, and Al content is weight percentage 28～36%.
Claims (3)
1. one kind contains magnesia carbon brick of compound antioxidizer and preparation method thereof, it is characterized in that, this magnesia carbon brick is processed by following raw materials by weight:
It processes step:
1) by proportion of raw materials and requirement; Accurately take by weighing electrosmelted magnesite clinker, graphite, compound antioxidizer, resol and pitch; Earlier the electrosmelted magnesite clinker of the electrosmelted magnesite clinker of the electrosmelted magnesite clinker of 3mm＜granularity≤5mm, 1mm＜granularity≤3mm and 0.088mm＜granularity≤1mm was joined in the sand mill premix stone roller 3～5 minutes; And then adding resol adds remaining raw material, the mixed stone roller 10～15 minutes after mixing 3～5 minutes;
2) material that mixes is added in the mould, on 600 tons～1200 tons friction presses, pressurize, process base substrate;
3) base substrate is sent into the dry kiln drying, 40～60 ℃ of dry kiln hot-wind inlet temperature, temperature is 180～200 ℃ between heat preservation zone, and 40～60 ℃ of temperature outs are not less than 16 hours time of drying;
Described compound antioxidizer by magnesium aluminum-alloy powder and TiB2 by weight being (60～70): the ratio of (40～30) is formulated.
2. a kind of magnesia carbon brick that contains compound antioxidizer according to claim 1 and preparation method thereof is characterized in that, TiB in the described TiB2
2Content is weight percentage 29～38.5%.
3. a kind of magnesia carbon brick that contains compound antioxidizer according to claim 1 and preparation method thereof is characterized in that, Mg content is weight percentage 26～34% in the described magnesium aluminum-alloy powder, and Al content is weight percentage 28～36%.
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| CN2012102777595A CN102765953B (en) | 2012-08-07 | 2012-08-07 | Magnesia carbon brick containing composite antioxidant and preparation thereof |
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| CN2012102777595A CN102765953B (en) | 2012-08-07 | 2012-08-07 | Magnesia carbon brick containing composite antioxidant and preparation thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103113122A (en) * | 2013-03-18 | 2013-05-22 | 河南省伯马股份有限公司 | Sliding plate brick for casting high manganese steel |
| CN103524137A (en) * | 2013-09-29 | 2014-01-22 | 浙江金磊高温材料股份有限公司 | Magnesium carbon brick for steel-making converter and steel ladle, and preparation method of magnesium carbon brick |
| CN103570368A (en) * | 2013-11-06 | 2014-02-12 | 营口鲅鱼圈耐火材料有限公司 | Magnesia carbon brick for electric furnace and preparation method thereof |
| CN104230359A (en) * | 2014-09-19 | 2014-12-24 | 上海利尔耐火材料有限公司 | Magnesia carbon brick for arc furnace lining and production method of magnesia carbon brick |
| CN106518116A (en) * | 2016-11-25 | 2017-03-22 | 江西理工大学 | Special magnesium-carbon rare-earth brick for vanadium extracting furnace and manufacturing method for special magnesium-carbon rare-earth brick |
| CN107188583A (en) * | 2017-07-12 | 2017-09-22 | 瑞泰科技股份有限公司 | A kind of joint sealing material for CFB boiler liner crack |
| CN110550922A (en) * | 2019-09-23 | 2019-12-10 | 武汉科技大学 | Green low-creep MgO-C brick and preparation method thereof |
| CN112409002A (en) * | 2020-11-25 | 2021-02-26 | 辽宁富城耐火材料（集团）有限公司 | Ultrahigh carbon magnesia carbon brick with carbon content of more than 40% and preparation method thereof |
| CN112979328A (en) * | 2021-02-08 | 2021-06-18 | 东北大学 | Low-carbon magnesia-carbon refractory material and preparation method thereof |
| CN116102337A (en) * | 2023-04-13 | 2023-05-12 | 北京利尔高温材料股份有限公司 | Hydration-resistant magnesia spinel brick and preparation method thereof |
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| CN1562883A (en) * | 2004-04-09 | 2005-01-12 | 清华大学 | Firebrick made from silicom nitride combined with silicon carbide in use for sidewall of electrobath for making aluminium |
| CN101851106A (en) * | 2010-04-08 | 2010-10-06 | 营口鲅鱼圈耐火材料有限公司 | Antioxidation aluminium unburned carbon brick and preparation method thereof |
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Patent Citations (4)
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| WO2000075089A1 (en) * | 1999-06-07 | 2000-12-14 | Allied Mineral Products, Inc. | Lightweight dry refractory |
| CN1560305A (en) * | 2004-02-19 | 2005-01-05 | 上海交通大学 | Process of preparing composite material with in situ particle inhancing magnesium base |
| CN1562883A (en) * | 2004-04-09 | 2005-01-12 | 清华大学 | Firebrick made from silicom nitride combined with silicon carbide in use for sidewall of electrobath for making aluminium |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103113122A (en) * | 2013-03-18 | 2013-05-22 | 河南省伯马股份有限公司 | Sliding plate brick for casting high manganese steel |
| CN103113122B (en) * | 2013-03-18 | 2014-07-16 | 河南省伯马股份有限公司 | Sliding plate brick for casting high manganese steel |
| CN103524137A (en) * | 2013-09-29 | 2014-01-22 | 浙江金磊高温材料股份有限公司 | Magnesium carbon brick for steel-making converter and steel ladle, and preparation method of magnesium carbon brick |
| CN103570368A (en) * | 2013-11-06 | 2014-02-12 | 营口鲅鱼圈耐火材料有限公司 | Magnesia carbon brick for electric furnace and preparation method thereof |
| CN104230359A (en) * | 2014-09-19 | 2014-12-24 | 上海利尔耐火材料有限公司 | Magnesia carbon brick for arc furnace lining and production method of magnesia carbon brick |
| CN106518116A (en) * | 2016-11-25 | 2017-03-22 | 江西理工大学 | Special magnesium-carbon rare-earth brick for vanadium extracting furnace and manufacturing method for special magnesium-carbon rare-earth brick |
| CN107188583A (en) * | 2017-07-12 | 2017-09-22 | 瑞泰科技股份有限公司 | A kind of joint sealing material for CFB boiler liner crack |
| CN107188583B (en) * | 2017-07-12 | 2020-09-15 | 瑞泰科技股份有限公司 | Gap filling material for CFB boiler lining cracks |
| CN110550922A (en) * | 2019-09-23 | 2019-12-10 | 武汉科技大学 | Green low-creep MgO-C brick and preparation method thereof |
| CN112409002A (en) * | 2020-11-25 | 2021-02-26 | 辽宁富城耐火材料（集团）有限公司 | Ultrahigh carbon magnesia carbon brick with carbon content of more than 40% and preparation method thereof |
| CN112409002B (en) * | 2020-11-25 | 2021-07-13 | 辽宁富城耐火材料（集团）有限公司 | Ultrahigh carbon magnesia carbon brick with carbon content of more than 40% and preparation method thereof |
| CN112979328A (en) * | 2021-02-08 | 2021-06-18 | 东北大学 | Low-carbon magnesia-carbon refractory material and preparation method thereof |
| CN116102337A (en) * | 2023-04-13 | 2023-05-12 | 北京利尔高温材料股份有限公司 | Hydration-resistant magnesia spinel brick and preparation method thereof |
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