CN106495736A - A kind of low body density high-strength degree light silicious brick and preparation method thereof - Google Patents
A kind of low body density high-strength degree light silicious brick and preparation method thereof Download PDFInfo
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- CN106495736A CN106495736A CN201610945034.7A CN201610945034A CN106495736A CN 106495736 A CN106495736 A CN 106495736A CN 201610945034 A CN201610945034 A CN 201610945034A CN 106495736 A CN106495736 A CN 106495736A
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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
- C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
- C04B38/063—Preparing or treating the raw materials individually or as batches
- C04B38/0635—Compounding ingredients
- C04B38/0645—Burnable, meltable, sublimable materials
- C04B38/0675—Vegetable refuse; Cellulosic materials, e.g. wood chips, cork, peat, paper
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/14—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silica
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/6303—Inorganic additives
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
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- 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
- C04B2235/327—Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3272—Iron oxides or oxide forming salts thereof, e.g. hematite, magnetite
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
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- C04B2235/77—Density
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
Abstract
The invention provides a kind of low body density high-strength degree light silicious brick, is prepared by following raw material, the raw material includes：60～70 weight portion of Cab-O-sil；5～10 weight portion of wood chip；14～18 weight portion of lignin；1.5～2.5 weight portion of di-iron trioxide；2～5 weight portion of calcium hydroxide.Compared with prior art, the present invention can strengthen the intensity of semi-finished product with Cab-O-sil as primary raw material with lignin and calcium hydroxide as bonding agent so that light silicious brick under conditions of volume density reduces, still can keep intensity, make thermal conductivity factor lower.
Description
Technical field
The invention belongs to technical field of refractory materials, more particularly to a kind of low body density high-strength degree light silicious brick and its preparation side
Method.
Background technology
Light silicious brick also known as siliceous heat insulation brick, be silica more than 91%, bulk density is in 1.2g/cm3Following
Lightweight refracrory, refractoriness and refractoriness under load are more or less the same with the common silica brick of composition identical.But due to pore a lot,
Therefore compressive resistance, resistance to slag, corrosion resistance etc. are not so good as common silica brick, and thermal shock resistance increases, and Long-Time Service is not
The characteristics such as contraction, are widely applied in light thermal insulation fire-resistant material system and furnace design.
Due to producing larger volume expansion, make burning till for light silicious brick more difficult than other refractory materials.Manufacture light silicious brick
Core technology be mineralizer selection and application, its objective is it is to control light silicious brick in sintering process, due to silicon
The crystal transfer of stone produces the volumetric expansion that larger stress causes in brick, it is to avoid silica brick ftractures when burning till.When silica brick burns till
Require for quartz to be changed into stable high temperature mineral phase tridymite and cristobalite as far as possible, in order to promote this conversion, generally
Mineralizer is added during silica brick is made.Mineralizer is can be with the oxide of silicon dioxde reaction generation liquid phase, its effect
The refractoriness of product is not significantly reduced while quartz transition is accelerated, and because of answering that expansion is produced when adobe can be suppressed to burn till
Power, prevents product loose or ftractures.It is iron oxide and calcium oxide mostly to make the actually used mineralizer of silica brick at present, and they are not
Only there are These characteristics, and can guarantee that silica brick has good mechanical behavior under high temperature.But, the iron oxide and oxygen used in production
Change calcium and added with fine powder form and milk of lime form respectively, the former granularity is not thin enough, disperses not uniform enough in silica brick.
Content of the invention
In view of this, the technical problem to be solved be to provide by a kind of volume density as little as 0.55～
0.8g/cm3And the higher light silicious brick of intensity and preparation method thereof.
The invention provides a kind of light silicious brick, is prepared by following raw material, the raw material includes：
Preferably, the fineness of the Cab-O-sil is 180～300 μm.
Preferably, the granularity of the wood chip is 80～100 μm.
Preferably, the volume density of the light silicious brick is 0.5～0.8g/cm3.
Present invention also offers a kind of preparation method of light silicious brick, including：
By the Cab-O-sil of 60～70 weight portions, the wood chip of 5～10 weight portions, the lignin of 14～18 weight portions, 1.5～
The di-iron trioxide of 2.5 weight portions has the calcium hydroxide mixed-forming with 2～5 weight portions, sinters, obtain light silica after drying
Brick.
Preferably, the drying is specially：20 DEG C～30 DEG C 8～12h of drying, then 50 DEG C～80 DEG C 24～36h of baking.
Preferably, the temperature of the sintering is 1370 DEG C～1390 DEG C；The time of sintering is 24～36h.
The invention provides a kind of light silicious brick, is prepared by following raw material, the raw material includes：Cab-O-sil 60～70
Weight portion；5～10 weight portion of wood chip；14～18 weight portion of lignin；1.5～2.5 weight portion of di-iron trioxide；Calcium hydroxide 2
～5 weight portions.Compared with prior art, of the invention with Cab-O-sil as primary raw material, with lignin and calcium hydroxide as bonding agent,
The intensity of semi-finished product can be strengthened so that light silicious brick volume density reduce under conditions of, still can keep intensity, make heat conduction
Coefficient is lower.
Specific embodiment
The invention provides a kind of low body density high-strength degree light silicious brick, is prepared by following raw material, the raw material includes：
The present invention can strengthen the strong of semi-finished product with Cab-O-sil as primary raw material with lignin and calcium hydroxide as bonding agent
Degree so that light silicious brick volume density reduce under conditions of, still can keep intensity, make thermal conductivity factor lower.
The present invention is not particularly limited to the source of all raw materials, is commercially available.
Wherein, the content of the Cab-O-sil is preferably 64～68 weight portions；The fineness of the Cab-O-sil be preferably 180～
300μm.
The content of the wood chip is preferably 7～8 weight portions；The granularity of the wood chip is preferably 80～100 μm.Wood chip is main
Mitigation weight is played, increases the effect of volume.
The content of the lignin is preferably 15～17 weight portions；Lignin functioning as in light silicious brick preparation
Bonding agent.
The content of the di-iron trioxide is preferably 1.8～2.2 weight portions.Di-iron trioxide is risen in light silicious brick preparation
Effect to catalyst.
The content of the calcium hydroxide is preferably 3～4 weight portions.Calcium hydroxide can be simultaneously as bonding agent and catalyst.
In the present invention, the volume density of the light silicious brick is preferably 0.5～0.8g/cm3.
Present invention also offers a kind of preparation method of above-mentioned light silicious brick, including：By the Cab-O-sil of 60～70 weight portions,
The wood chip of 5～10 weight portions, the lignin of 14～18 weight portions, the di-iron trioxide of 1.5～2.5 weight portions have and 2～5 weight
The calcium hydroxide mixed-forming of part, sinters after drying, obtains light silicious brick.
Wherein, the Cab-O-sil, wood chip, lignin, di-iron trioxide and calcium hydroxide are same as above, and here is no longer gone to live in the household of one's in-laws on getting married
State.
Cab-O-sil, wood chip, lignin, di-iron trioxide are mixed in proportion with calcium hydroxide, the time of the mixing is excellent
Elect 20～30min as.
Mixing aftershaping；The method of the shaping is method well known to those skilled in the art, has no special limit
System.
After shaping, excellent selective mechanism is into adobe, then is dried；The method of the drying is known for those skilled in the art
Method, have no special restriction, the present invention is preferably：20 DEG C～30 DEG C 8～12h of drying, then 50 DEG C～80 DEG C bakings
24～36h.
Sinter after drying；The temperature of the sintering is preferably 1370 DEG C～1390 DEG C；The time of sintering be preferably 24～
36h.
The preparation method of the low body density high-strength degree light silicious brick that the present invention is provided is simple, can achieve batch production.
Technical scheme below in conjunction with the embodiment of the present invention is clearly and completely described, it is clear that described enforcement
Example is only a part of embodiment of the invention, rather than whole embodiment.Embodiment in based on the present invention, this area are common
The every other embodiment obtained under the premise of creative work is not made by technical staff, belongs to the model of present invention protection
Enclose.
Embodiment 1
By the silica fine powder (requiring 180～300 μm of fineness) of 60 weight portions, 10 weight portion wood chips (80～120 μm), 18 weights
Amount part bonding agent lignin, the catalyst (Fe of 2.5 weight portions2O3), 5 weight portion calcium hydroxides (Ca (OH)2) 20～30 points of mixing
Clock, then starts base, and generally adobe is dried 8～12 hours at 25 DEG C or so, and then drying at 50 DEG C～80 DEG C needs
24～36 hours or so are wanted, last kiln loading vehicle enters sintering, sintering temperature is 1370 DEG C, and temperature retention time is 36 hours, obtains low
Body density high-strength degree light silicious brick.
The performance of the light silicious brick obtained in embodiment 1 is detected, obtains the results are shown in Table 1.
Embodiment 2
By the silica fine powder (requiring 180～300 μm of fineness) of 65 weight portions, 8 weight portion wood chips (80～120 μm), 16 weights
Amount part bonding agent lignin, the catalyst (Fe of 2.5 weight portions2O3), 5 weight portion calcium hydroxides (Ca (OH)2) 20～30 points of mixing
Clock, then starts base, and generally adobe is dried 8～12 hours at 25 DEG C or so, and then drying at 50 DEG C～80 DEG C needs
24～36 hours or so are wanted, last kiln loading vehicle enters sintering, sintering temperature is 1380 DEG C, and temperature retention time is 30 hours, obtains low
Body density high-strength degree light silicious brick.
The performance of the light silicious brick obtained in embodiment 2 is detected, obtains the results are shown in Table 1.
Embodiment 3
By the silica fine powder (requiring 180～300 μm of fineness) of 70 weight portions, 5 weight portion wood chips (80～120 μm), 14 weights
Amount part bonding agent lignin, the catalyst (Fe of 1.5 weight portions2O3), 2 weight portion calcium hydroxides (Ca (OH)2) 20～30 points of mixing
Clock, then starts base, and generally adobe is dried 8～12 hours at 25 DEG C or so, and then drying at 50 DEG C～80 DEG C needs
24～36 hours or so are wanted, last kiln loading vehicle enters sintering, sintering temperature is 1390 DEG C, and temperature retention time is 24 hours, obtains low
Body density high-strength degree light silicious brick.
The performance of the light silicious brick obtained in embodiment 3 is detected, obtains the results are shown in Table 1.
The performance test results of the light silicious brick that 1 1～embodiment of embodiment 3 of table is obtained
The explanation of above example is only intended to help and understands the method for the present invention and its core concept.It should be pointed out that right
For those skilled in the art, under the premise without departing from the principles of the invention, the present invention can also be carried out
Some improvement and modification, these improvement and modification are also fallen in the protection domain of the claims in the present invention.
Claims (7)
1. a kind of low body density high-strength degree light silicious brick, it is characterised in that prepared by following raw material, the raw material includes：
2. light silicious brick according to claim 1, it is characterised in that the fineness of the Cab-O-sil is 180～300 μm.
3. light silicious brick according to claim 1, it is characterised in that the granularity of the wood chip is 80～100 μm.
4. light silicious brick according to claim 1, it is characterised in that the volume density of the light silicious brick is 0.5～0.8g/
cm3.
5. a kind of preparation method of light silicious brick, it is characterised in that include：
By the Cab-O-sil of 60～70 weight portions, the wood chip of 5～10 weight portions, the lignin of 14～18 weight portions, 1.5～2.5 weights
The di-iron trioxide of amount part has the calcium hydroxide mixed-forming with 2～5 weight portions, sinters, obtain low body density high-strength degree after drying
Light silicious brick.
6. preparation method according to claim 5, it is characterised in that the drying is specially：20 DEG C～30 DEG C dry 8～
12h, then 50 DEG C～80 DEG C 24～36h of baking.
7. preparation method according to claim 5, it is characterised in that the temperature of the sintering is 1370 DEG C～1390 DEG C；
The time of sintering is 24～36h.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610945034.7A CN106495736A (en) | 2016-10-26 | 2016-10-26 | A kind of low body density high-strength degree light silicious brick and preparation method thereof |
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| CN201610945034.7A CN106495736A (en) | 2016-10-26 | 2016-10-26 | A kind of low body density high-strength degree light silicious brick and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108083830A (en) * | 2017-12-12 | 2018-05-29 | 陈太师 | A kind of coke oven and the special heat conduction silica brick of hot-blast stove and preparation method thereof |
| CN116283311A (en) * | 2023-03-09 | 2023-06-23 | 佛山市杨森化工有限公司 | Production process and formula of liquid dispergation enhancer |
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|---|---|---|---|---|
| CN86105686A (en) * | 1986-07-31 | 1987-03-25 | 马家沟耐火材料厂 | A kind of high strength and light weight Si bricks and manufacture method thereof |
| CN101781919A (en) * | 2010-01-29 | 2010-07-21 | 施富贤 | Low heat conduction light heat insulating silica brick |
| CN101948321A (en) * | 2010-09-15 | 2011-01-19 | 郑州豫兴耐火材料有限公司 | Anti-adhesion, high-temperature resistant and heat accumulated lattice brick |
| CN102515801A (en) * | 2011-12-20 | 2012-06-27 | 浙江照山硅质耐火材料有限公司 | Silica brick for glass furnace |
| CN103880439A (en) * | 2014-02-17 | 2014-06-25 | 武汉科技大学 | Preparation method of light-weight silica brick |
-
2016
- 2016-10-26 CN CN201610945034.7A patent/CN106495736A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86105686A (en) * | 1986-07-31 | 1987-03-25 | 马家沟耐火材料厂 | A kind of high strength and light weight Si bricks and manufacture method thereof |
| CN101781919A (en) * | 2010-01-29 | 2010-07-21 | 施富贤 | Low heat conduction light heat insulating silica brick |
| CN101948321A (en) * | 2010-09-15 | 2011-01-19 | 郑州豫兴耐火材料有限公司 | Anti-adhesion, high-temperature resistant and heat accumulated lattice brick |
| CN102515801A (en) * | 2011-12-20 | 2012-06-27 | 浙江照山硅质耐火材料有限公司 | Silica brick for glass furnace |
| CN103880439A (en) * | 2014-02-17 | 2014-06-25 | 武汉科技大学 | Preparation method of light-weight silica brick |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108083830A (en) * | 2017-12-12 | 2018-05-29 | 陈太师 | A kind of coke oven and the special heat conduction silica brick of hot-blast stove and preparation method thereof |
| CN116283311A (en) * | 2023-03-09 | 2023-06-23 | 佛山市杨森化工有限公司 | Production process and formula of liquid dispergation enhancer |
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