CN103420668A - Heat-storing magnesia brick - Google Patents
Heat-storing magnesia brick Download PDFInfo
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- CN103420668A CN103420668A CN2012101593823A CN201210159382A CN103420668A CN 103420668 A CN103420668 A CN 103420668A CN 2012101593823 A CN2012101593823 A CN 2012101593823A CN 201210159382 A CN201210159382 A CN 201210159382A CN 103420668 A CN103420668 A CN 103420668A
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- magnesia brick
- brick
- electrical heating
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Abstract
The invention discloses a heat-storing magnesia brick. Raw materials to manufacture the magnesia brick comprise 85%-90% of magnesium oxide, 4.5%-6.5% of ferric oxide, 0.5%-2% of aluminum oxide, 2%-4% of silicon dioxide, 1.5%-3% of calcium oxide and 1%-3% of aluminium nitride. The heat-storing magnesia brick prepared from the raw materials has high heat storage capacity, high heat storage density and good heat conduction capability. The heat-storing magnesia brick is capable of achieving that heat stored in the heat-storing magnesia brick is conducted from a hot surface closed to an electrical heating component to a cold surface quickly during a heat storing process, and that the heat stored in the heat-storing magnesia brick is released and transferred to air quickly during a heat releasing process, thus accelerating the heat transfer speed and improving the heat storing efficiency of a whole heat storing device. The heat-storing magnesia brick is also capable of achieving that the conduction speed of the heat in the brick from the hot surface closed to the electrical heating component to the cold surface is accelerated during the heat storing process, increasing the heat balancing speed of the whole device, shortening the working time of the electrical heating component, and prolonging the service lifetime of the electrical heating component.
Description
Technical field
The present invention relates to a kind of sintered type gitter brick, specifically, relate to a kind of gitter brick that magnesium oxide is base-material of take.
Background technology
In recent years, along with the fast development of national economy and the raising of living standards of the people, need for electricity is growing.Simultaneously, due to domestic industry production and lives of the people rule and custom, daytime, evening, the peak valley of need for electricity differed greatly, and particularly in winter of needs heating and need summer of cooling, peak valley difference is larger.The peak valley difference of need for electricity is threatening the safety and economy of power plant, operation of power networks.Under this background, country widelys popularize the demand side management policy, carries out time-of-use tariffs, encourages to support applying of low ebb accumulation of energy (accumulation of heat, cold-storage and electric power storage) technology and product.Research and develop environmental protection, the vital task that efficient, heat storage medium that have good thermal physical property parameter just becomes branch of industry and scientific research institution for this reason.
At present because the mode of utilizing solid heat storage medium gitter brick to carry out accumulation of heat has volume is little, regenerative apparatus does not bear heat storage medium pressure and erosion, environmental protection, the many advantages such as efficient, energy-conservation, safe, become the new lover on world market, the magnesia brick that the magnesium oxide (MgO) of particularly take manufactures as main raw material, because of its refractoriness high, at high temperature there is higher specific heat capacity, guaranteed the requirement of heat storage medium to heat storage capacity.But in addition, in practical application, also require heat-storing material to there is the good capacity of heat transmission, make regenerative apparatus in the quick accumulation of heat of trough-electricity period, and carry out heat release by certain heat flow density need to heat in peak period the time.If the heat conductivility missionary society of heat-storing material causes accumulation of heat and heat release difficulty, a large amount of heat energy that made the electrothermal component surface sediment and scaling loss very easily, heat can form convection current by heated high temperature air simultaneously, make the thermosteresis increasing.Realization to the capacity of heat transmission in the manufacturing technology of at present existing accumulation of heat magnesia brick also has not enough.
Summary of the invention
What the present invention will solve is the technical problem that has at present accumulation of heat magnesia brick capacity of heat transmission deficiency now, provides a kind of when having high thermal storage density heat storage capacity, also has the accumulation of heat magnesia brick of excellent heat conductivity ability.
In order to solve the problems of the technologies described above, the present invention is achieved by following technical scheme:
A kind of accumulation of heat magnesia brick, the making raw materials by weight of this accumulation of heat magnesia brick is composed of the following components:
The invention has the beneficial effects as follows:
According to the accumulation of heat magnesia brick of raw material sintering provided by the present invention, there is high heat storage capacity, high thermal storage density, there is the good capacity of heat transmission simultaneously.
(1) when accumulation of heat magnesia brick provided by the present invention can be realized accumulation of heat, make the heat stored in gitter brick be accelerated, to the huyashi-chuuka (cold chinese-style noodles) conduction, to accelerate heat transfer speed by the hot side near the electrically heated components and parts, improve the heat storage efficiency of whole regenerative apparatus.
(2) when accumulation of heat magnesia brick provided by the present invention can be realized heat release, make the heat accelerated release in vitro stored in gitter brick pass to air, improve the heat exchange efficiency of single unit system.
(3) accumulation of heat magnesia brick provided by the present invention realize in heat-accumulating process accelerating in brick heat by the hot side near the electrically heated components and parts conduction of velocity to huyashi-chuuka (cold chinese-style noodles), improve the thermal equilibrium speed of single unit system, shorten the working hour of electrically heated components and parts, extend its work-ing life.
Accumulation of heat magnesia brick density>=3.0g/cm provided by the present invention
3Refractoriness under load>=1550 ℃; Cold crushing strength>=50Mpa; Resistance to elevated temperatures is good, can be high temperature resistant 1400 ℃; Because main component is the metal oxide with high specific heat capacity, so accumulation of heat is effective, and particularly the heat conductivility excellence of finished bricks, be 24W/mk during thermal conductivity normal temperature, in the time of 400 ℃, is 16 ~ 18W/mk, in the time of 800 ℃, is 6 ~ 7W/mk; Compare common magnesia brick, the capacity of heat transmission has improved more than 60%, in the practical application of regenerative apparatus, plays a significant role, and the working efficiency of regenerative apparatus is significantly improved.
Embodiment
The present invention adds a kind of new component---aluminium nitride in the raw material of traditional accumulation of heat magnesia brick, and its characteristics are: high-melting-point (2450 ℃), high volume density (3.28g/cm
3), lower thermal expansivity (4.5 * 10
-6℃), higher specific heat capacity (0.75kJ/ under normal temperature (kg. ℃) and far above the thermal conductivity (180W/mk under normal temperature) of common metal oxide compound.
The aluminium nitride insulating property are good, under normal temperature and pressure, are the powdered form that particle diameter is tiny, and good mechanical property is normal pressure-sintered and nontoxic in the raw material after can directly being mixed in other and pulverizing.
Below by specific embodiment, the present invention is described in further detail, and all feed composition that adopt in the present invention are commercially available technical grade commodity:
Embodiment 1
First according to weight percent by 85% magnesium oxide (MgO) particle, 4.5% ferric oxide particle (Fe
2O
3), 1.5% aluminium sesquioxide particle (Al
2O
3), 4% silica dioxide granule (SiO
2) and 2% calcium oxide (CaO) particle, sneaking into 3% the mixing aftershaping of aluminium nitride (AlN) powder is adobe; Then through stacking bricks after drying at the temperature of 100 ~ 120 ℃, finally at the temperature of 1600 ~ 1700 ℃, sinter into to finished product packing.
Embodiment 2
First according to weight percent by 86% magnesium oxide (MgO) particle, 5% ferric oxide particle (Fe
2O
3), 2% aluminium sesquioxide particle (Al
2O
3), 2% silica dioxide granule (SiO
2) and 3% calcium oxide (CaO) particle, sneaking into 2% the mixing aftershaping of aluminium nitride (AlN) powder is adobe; Then through stacking bricks after drying at the temperature of 100 ~ 120 ℃, finally at the temperature of 1600 ~ 1700 ℃, sinter into to finished product packing.
Embodiment 3
First according to weight percent by 86% magnesium oxide (MgO) particle, 6.5% ferric oxide particle (Fe
2O
3), 1% aluminium sesquioxide particle (Al
2O
3), 3% silica dioxide granule (SiO
2) and 1.5% calcium oxide (CaO) particle, sneaking into 2% the mixing aftershaping of aluminium nitride (AlN) powder is adobe; Then through stacking bricks after drying at the temperature of 100 ~ 120 ℃, finally at the temperature of 1600 ~ 1700 ℃, sinter into to finished product packing.
Embodiment 4
First according to weight percent by 88% magnesium oxide (MgO) particle, 5.5% ferric oxide particle (Fe
2O
3), 1% aluminium sesquioxide particle (Al
2O
3), 2% silica dioxide granule (SiO
2) and 2% calcium oxide (CaO) particle, sneaking into 1.5% the mixing aftershaping of aluminium nitride (AlN) powder is adobe; Then through stacking bricks after drying at the temperature of 100 ~ 120 ℃, finally at the temperature of 1600 ~ 1700 ℃, sinter into to finished product packing.
Embodiment 5
First according to weight percent by 90% magnesium oxide (MgO) particle, 4.5% ferric oxide particle (Fe
2O
3), 0.5% aluminium sesquioxide particle (Al
2O
3), 2.5% silica dioxide granule (SiO
2) and 1.5% calcium oxide (CaO) particle, sneaking into 1% the mixing aftershaping of aluminium nitride (AlN) powder is adobe; Then through stacking bricks after drying at the temperature of 100 ~ 120 ℃, finally at the temperature of 1600 ~ 1700 ℃, sinter into to finished product packing.
Although top combination is described the preferred embodiments of the present invention; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not breaking away from the scope situation that aim of the present invention and claim protect, can also make the concrete conversion of a lot of forms, within these all belong to protection scope of the present invention.
Claims (3)
1. an accumulation of heat magnesia brick, is characterized in that, the making raw materials by weight of this accumulation of heat magnesia brick is composed of the following components:
2. a kind of accumulation of heat magnesia brick according to claim 1, is characterized in that, the making raw materials by weight of this accumulation of heat magnesia brick is composed of the following components:
3. a kind of accumulation of heat magnesia brick according to claim 1, is characterized in that, the making raw materials by weight of this accumulation of heat magnesia brick is composed of the following components:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101593823A CN103420668A (en) | 2012-05-21 | 2012-05-21 | Heat-storing magnesia brick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101593823A CN103420668A (en) | 2012-05-21 | 2012-05-21 | Heat-storing magnesia brick |
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| Publication Number | Publication Date |
|---|---|
| CN103420668A true CN103420668A (en) | 2013-12-04 |
Family
ID=49646105
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|---|---|---|---|
| CN2012101593823A Pending CN103420668A (en) | 2012-05-21 | 2012-05-21 | Heat-storing magnesia brick |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104446525A (en) * | 2014-09-25 | 2015-03-25 | 宜兴瑞泰耐火材料有限公司 | Magnesite brick for saving energy under high-temperature environment based on thermal-barrier and thermal-radiation complex function and preparation process of magnesite brick |
| CN104446525B (en) * | 2014-09-25 | 2017-01-04 | 宜兴瑞泰耐火材料有限公司 | A kind of energy-conservation magnesia brick of hot environment based on thermal boundary and heat radiation complex function and preparation technology thereof |
| CN106588036A (en) * | 2016-11-02 | 2017-04-26 | 平湖伟峰科技有限责任公司 | Novel energy storage brick |
| CN106766908A (en) * | 2016-11-16 | 2017-05-31 | 广西大学 | A kind of heat accumulating type roasting plant |
| CN106905929A (en) * | 2017-03-22 | 2017-06-30 | 辽宁中镁控股股份有限公司 | A kind of solid heat storage material and preparation method and application |
| CN107446556A (en) * | 2017-07-19 | 2017-12-08 | 山东中信能源联合装备股份有限公司 | Inorganic nano composite material regenerative block and preparation method thereof |
| CN109446623A (en) * | 2018-10-19 | 2019-03-08 | 沈阳工业大学 | A kind of solid-state accumulation of heat heat characteristic adaptation design method based on rate of heat transfer balance |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1803966A (en) * | 2006-01-18 | 2006-07-19 | 华南理工大学 | High heat conduction and figuration composite phase-changing material and preparation method thereof |
| CN101798233A (en) * | 2010-02-10 | 2010-08-11 | 河南科技大学 | Riser heating and insulating agent |
-
2012
- 2012-05-21 CN CN2012101593823A patent/CN103420668A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1803966A (en) * | 2006-01-18 | 2006-07-19 | 华南理工大学 | High heat conduction and figuration composite phase-changing material and preparation method thereof |
| CN101798233A (en) * | 2010-02-10 | 2010-08-11 | 河南科技大学 | Riser heating and insulating agent |
Non-Patent Citations (1)
| Title |
|---|
| 刘永杰等: "高铁镁砖的研制", 《耐火材料》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104446525A (en) * | 2014-09-25 | 2015-03-25 | 宜兴瑞泰耐火材料有限公司 | Magnesite brick for saving energy under high-temperature environment based on thermal-barrier and thermal-radiation complex function and preparation process of magnesite brick |
| CN104446525B (en) * | 2014-09-25 | 2017-01-04 | 宜兴瑞泰耐火材料有限公司 | A kind of energy-conservation magnesia brick of hot environment based on thermal boundary and heat radiation complex function and preparation technology thereof |
| CN106588036A (en) * | 2016-11-02 | 2017-04-26 | 平湖伟峰科技有限责任公司 | Novel energy storage brick |
| CN106766908A (en) * | 2016-11-16 | 2017-05-31 | 广西大学 | A kind of heat accumulating type roasting plant |
| CN106905929A (en) * | 2017-03-22 | 2017-06-30 | 辽宁中镁控股股份有限公司 | A kind of solid heat storage material and preparation method and application |
| CN106905929B (en) * | 2017-03-22 | 2019-09-20 | 辽宁中镁高温材料有限公司 | A kind of solid heat storage material and preparation method and application |
| CN107446556A (en) * | 2017-07-19 | 2017-12-08 | 山东中信能源联合装备股份有限公司 | Inorganic nano composite material regenerative block and preparation method thereof |
| CN109446623A (en) * | 2018-10-19 | 2019-03-08 | 沈阳工业大学 | A kind of solid-state accumulation of heat heat characteristic adaptation design method based on rate of heat transfer balance |
| CN109446623B (en) * | 2018-10-19 | 2022-11-04 | 沈阳工业大学 | Solid-state heat storage heating characteristic matching design method based on heat transfer rate balance |
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Application publication date: 20131204 |