CN104341168A - Light-weight heat-insulation refractory castable - Google Patents
Light-weight heat-insulation refractory castable Download PDFInfo
- Publication number
- CN104341168A CN104341168A CN201410583033.3A CN201410583033A CN104341168A CN 104341168 A CN104341168 A CN 104341168A CN 201410583033 A CN201410583033 A CN 201410583033A CN 104341168 A CN104341168 A CN 104341168A
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- Prior art keywords
- parts
- refractory castable
- mullite
- magnesiumcarbonate
- flyash
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/08—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding porous substances
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3427—Silicates other than clay, e.g. water glass
- C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Products (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention relates to a light-weight heat-insulation refractory castable which is prepared from the following raw materials in parts by weight: 10-20 parts of fly ash, 20-30 parts of mullite, 10-20 parts of aluminum oxide hollow sphere, 30-40 parts of aluminum oxide micropowder and 20-30 parts of magnesium carbonate. The mullite and aluminum oxide hollow sphere are used as aggregate, and the fly ash, aluminum oxide micropowder and magnesium carbonate are used as the matrix.
Description
Technical field
The invention belongs to technical field of refractory materials, particularly relate to a kind of light thermal-shield refractory castable.
Background technology
Compared with qualitative refractory product, with refractory castable be that the unshape refractory of representative has that technical process is short, production energy consumption and cost is low, easy to use, applied widely, globality and the advantage such as result of use is good, thus worldwide obtain and develop rapidly, its proportion shared in whole refractory materials is more and more higher.In the country of some refractory technologies advanced person, the output of unshape refractory is close to the output even having exceeded setting goods.Such as, the ratio that current Japanese unshape refractory output accounts for whole refractory materials reaches about 60%; The U.S. be about 50%; English, moral, Fa Deng state are 40% ~ 50%.Nowadays, refractory castable has been widely used in the high temperature service of the industrial circles such as metallurgy, building materials, electric power, chemical industry, has now widely applied the refractory castable of various material.
Light thermal-shield refractory castable refers to the refractory castable of low thermal conductivity and low heat capacity, also claims thermal insulation fire-resistant pouring material.Insulating refractory casting material mainly obtains lower thermal conductivity by the mode introducing pore, and the void content of material its thermal conductivity higher is lower in general, and also lower effect of heat insulation is better for the thermal conductivity of the less material in aperture of pore.Insulating refractory is reducing the energy consumption of high temperature service, is meeting high temperature special process and require there is purposes widely.The problem that existing method prepares light thermal-shield refractory castable is: one is that void content is not high, in refractory castable, the main source of pore is aglite, the void content preparing lightening casting material generally all can be less than the void content of aglite, so just cannot realize the high porosity of lightening casting material; Two are that the void content of mould material is higher but aperture is larger, for porous material, the intensity of the light material that bore dia is less is high, thermal conductivity is low, this is because the quantity of pore is just many in the little material of bore dia, at high temperature contributes to reducing convection of heat and radiation thus reduce the thermal conductivity of mould material.
Summary of the invention
In view of this, for the deficiencies in the prior art, the invention provides that a kind of volume density is little, thermal conductivity is low, heat-proof quality is good, serve as a contrast body formed after without the need to the light thermal-shield refractory castable of maintenance.
A kind of light thermal-shield refractory castable, is made up of following raw material: flyash, mullite, alumina hollow ball, alumina powder, magnesiumcarbonate; The parts by weight of above-mentioned raw materials are: 10 ~ 20 parts, flyash, mullite 20 ~ 30 parts, alumina hollow ball 10 ~ 20 parts, alumina powder 30 ~ 40 parts, 20 ~ 30 parts, magnesiumcarbonate.Mullite, alumina hollow ball are aggregate, and flyash, alumina powder, magnesiumcarbonate are matrix.
In sum, the present invention compared with prior art, alumina hollow ball in aggregate has special surface tissue and boring, surface irregularity, increase contact gear ratio surface-area, make alumina powder in aggregate and matrix, magnesiumcarbonate, flyash combines firmly, both improve fire performance, turn increase intensity and the heat insulation effect of material, decompose under magnesiumcarbonate hot environment and generate carbonic acid gas, magnesium oxide, carbonic acid gas can increase the void content of light thermal-shield refractory castable, alumina powder, the thermal shock resistance that magnesium-aluminium spinel ensures light thermal-shield refractory castable is generated under magnesium oxide hot environment.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail.This specific embodiment is only explanation of the invention; it is not the restriction to invention; those skilled in the art can make any amendment to the present embodiment as required after reading this specification sheets, as long as but be all subject to the protection of patent law in right of the present invention.
Embodiment 1
A kind of light thermal-shield refractory castable, is made up of following raw material: flyash, mullite, alumina hollow ball, alumina powder, magnesiumcarbonate; The parts by weight of above-mentioned raw materials are: 10 parts, flyash, mullite 30 parts, alumina hollow ball 10 parts, alumina powder 40 parts, 20 parts, magnesiumcarbonate.Mullite, alumina hollow ball are aggregate, and flyash, alumina powder, magnesiumcarbonate are matrix.
Embodiment 2
A kind of light thermal-shield refractory castable, is made up of following raw material: flyash, mullite, alumina hollow ball, alumina powder, magnesiumcarbonate; The parts by weight of above-mentioned raw materials are: 20 parts, flyash, mullite 20 parts, alumina hollow ball 20 parts, alumina powder 30 parts, 30 parts, magnesiumcarbonate.Mullite, alumina hollow ball are aggregate, and flyash, alumina powder, magnesiumcarbonate are matrix.
Alumina hollow ball in the aggregate of above-mentioned thermal insulation fire-resistant pouring material has special surface tissue and boring, surface irregularity, increase contact gear ratio surface-area, make alumina powder in aggregate and matrix, magnesiumcarbonate, flyash combines firmly, both improve fire performance, turn increase intensity and the heat insulation effect of material, decompose under magnesiumcarbonate hot environment and generate carbonic acid gas, magnesium oxide, carbonic acid gas can increase the void content of light thermal-shield refractory castable, alumina powder, the thermal shock resistance that magnesium-aluminium spinel ensures light thermal-shield refractory castable is generated under magnesium oxide hot environment.
Claims (3)
1. a light thermal-shield refractory castable, is characterized in that: be made up of following raw material: flyash, mullite, alumina hollow ball, alumina powder, magnesiumcarbonate; The parts by weight of above-mentioned raw materials are: 10 ~ 20 parts, flyash, mullite 20 ~ 30 parts, alumina hollow ball 10 ~ 20 parts, alumina powder 30 ~ 40 parts, 20 ~ 30 parts, magnesiumcarbonate; Mullite, alumina hollow ball are aggregate, and flyash, alumina powder, magnesiumcarbonate are matrix.
2. light thermal-shield refractory castable according to claim 1, is characterized in that: the parts by weight of above-mentioned raw materials are: 10 parts, flyash, mullite 30 parts, alumina hollow ball 10 parts, alumina powder 40 parts, 20 parts, magnesiumcarbonate.
3. light thermal-shield refractory castable according to claim 1, is characterized in that: the parts by weight of above-mentioned raw materials are: 20 parts, flyash, mullite 20 parts, alumina hollow ball 20 parts, alumina powder 30 parts, 30 parts, magnesiumcarbonate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410583033.3A CN104341168B (en) | 2014-10-28 | 2014-10-28 | Light thermal-shield refractory castable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410583033.3A CN104341168B (en) | 2014-10-28 | 2014-10-28 | Light thermal-shield refractory castable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104341168A true CN104341168A (en) | 2015-02-11 |
| CN104341168B CN104341168B (en) | 2016-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410583033.3A Expired - Fee Related CN104341168B (en) | 2014-10-28 | 2014-10-28 | Light thermal-shield refractory castable |
Country Status (1)
| Country | Link |
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| CN (1) | CN104341168B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101723687A (en) * | 2008-10-23 | 2010-06-09 | 刘春福 | Alumina bubble lightweight insulating refractory casting material |
| CN103382098A (en) * | 2013-07-16 | 2013-11-06 | 广州市佳境水处理技术工程有限公司 | Light biological carrier for water treatment, and preparation method and application of light biological carrier |
-
2014
- 2014-10-28 CN CN201410583033.3A patent/CN104341168B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101723687A (en) * | 2008-10-23 | 2010-06-09 | 刘春福 | Alumina bubble lightweight insulating refractory casting material |
| CN103382098A (en) * | 2013-07-16 | 2013-11-06 | 广州市佳境水处理技术工程有限公司 | Light biological carrier for water treatment, and preparation method and application of light biological carrier |
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| Publication number | Publication date |
|---|---|
| CN104341168B (en) | 2016-04-06 |
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Address after: 750002 Yinchuan Ningfeng District, Ningxia 490, Yinchuan IBI breeding center two phase 10, 3 floor 301 room. Patentee after: XINGXIA TZHG WASTE HEAT GENERATION TECHNOLOGY CO.,LTD. Address before: 750021 the Ningxia Hui Autonomous Region Yinchuan Xixia Industrial Park Jin Bo South Road Chuangxin crane hospital Patentee before: NINGXIA TIANZONG HONGGUANG COGENERATION TECHNOLOGY Co.,Ltd. |
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Granted publication date: 20160406 Termination date: 20211028 |