CN110423106A - A kind of compound formulation of boccaro anticracking vessel - Google Patents

A kind of compound formulation of boccaro anticracking vessel Download PDF

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Publication number
CN110423106A
CN110423106A CN201910813242.5A CN201910813242A CN110423106A CN 110423106 A CN110423106 A CN 110423106A CN 201910813242 A CN201910813242 A CN 201910813242A CN 110423106 A CN110423106 A CN 110423106A
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sio
content
mgo
boccaro
follows
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叶云声
叶震寰
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Henan Luoyang Yixing Development Co Ltd
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Henan Luoyang Yixing Development Co Ltd
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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
    • C04B35/01—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
    • C04B35/16—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 silicates other than clay
    • C04B35/18—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 silicates other than clay rich in aluminium oxide
    • 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
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • 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
    • C04B35/622—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
    • C04B35/62605—Treating the starting powders individually or as mixtures
    • 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
    • C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

A kind of compound formulation of boccaro anticracking vessel, cordierite chemical formula are 2MgO:2Al2O3: 5SiO2, theoretical chemistry composition: MgO 13.7, Al2O3It is 34.9, SiO2It is 51.4；At mixed raw material after talcum powder 35-45% and boccaro 55-65% is mixed, Al is added into mixed raw material2O3Content is the commercial alumina 12-15% of 96-98%, after mixing: content of MgO: 10%-16%；Al2O3Content: 20%-40%；SiO2Content: 40%-65%；The cordierite that the present invention synthesizes in blank at 1250 DEG C has just accounted for 60%, and made ceramic can reach 0~600 DEG C of cold and hot indehiscent effect of the sudden turn of events.

Description

A kind of compound formulation of boccaro anticracking vessel
Technical field
The present invention relates to life ceramic field, especially a kind of compound formulation of boccaro anticracking vessel.
Background technique
Actual life and the ceramics such as casserole used currently on the market and medicine pot all exist and are cracked later with long The phenomenon that, basic reason is defect of the material therefor in terms of the cold-and-heat resistent sudden turn of events.The defect for how overcoming the cold-and-heat resistent sudden turn of events, keeps away Exempt from casserole and medicine pot cracking, becomes insoluble technical problem for a long time.
In view of the foregoing, a kind of compound formulation of boccaro anticracking vessel is now invented.
Summary of the invention
Purpose of the invention is to overcome the shortcomings in the prior art, provides a kind of group of formula of boccaro anticracking vessel Method, the synthesis of cordierite, firing temperature need to reach 1350 DEG C~1400 DEG C, and the present invention fires the temperature of boccaro ware at 1300 DEG C Hereinafter, reducing firing temperature, generate the synthesis of cordierite largely in the case where lower and temperature-controllable, and can Guarantee not damage kiln while cordierite synthesis rate again.Use the boccaro, talcum powder and work for meeting ingredient requirement of the present invention Industry alumina powder can make synthesis temperature reduce by 100 DEG C or more；K in ideal cordierite synthesis2O、Na2O content generally requires not More than 0.2%, raw materials used K in the present invention2ONa2O content is in 0.4% or so, K2ONa2O is extraordinary fluxing agent, CaO It is also fluxing agent；Fe in the kaolinic boccaro of class at present2O3Content is obviously higher, in 8% or so, in practice, Fe2O3Every liter High 1% can make firing temperature reduce by 10 degree, and Fe in the mixed raw material in the present invention2O3Content 5% or so.With it is existing 1400 DEG C of firing temperature are compared, and the cordierite that the present invention synthesizes in blank at 1250 DEG C has just accounted for 60%, in ceramic As long as the content of middle cordierite, more than 30%, made ceramic can reach 0~600 DEG C of cold and hot indehiscent effect of the sudden turn of events, The synthesis temperature of cordierite is set to reduce nearly 200 DEG C.
The present invention to achieve the goals above, adopts the following technical scheme that a kind of compound formulation of boccaro anticracking vessel, purple The chemical analysis of sand are as follows: SiO2: 42.10, Al2O3: 34.13, Fe2O3: 8.06, CaO:0.57, MgO:0.43, K2ONa2O:0.5, Loss on ignition: 13.48；
The chemical analysis of talcum powder are as follows: SiO2: 58.5, Al2O3: 0.96, Fe2O3: 0.18, CaO:0.18, MgO:32.95, K2ONa2O:0.25, loss on ignition: 6.84；
The chemical analysis of industrial alumina powder are as follows: Al2O3: 97.5, SiO2: 0.003, Fe2O3: 0.01, Na2O:0.3, ZnO: 0.02, moisture content: 0.5, loss on ignition: 1；
Cordierite chemical formula is 2MgO:2Al2O3: 5SiO2, moL equivalent is 2:2:5, and theoretical chemistry forms: MgO 13.7, Al2O3It is 34.9, SiO2It is 51.4；
In order to reach this ideal moL equivalent, at mixed after talcum powder 35-45% and boccaro 55-65% is mixed Raw material is closed, Al is added into mixed raw material2O3Content is the commercial alumina 12-15% of 96-98%, in mixed blank MgO、Al2O3、SiO2, the mol equivalent of three components is respectively as follows: content of MgO: 10%-16%；Al2O3Content: 20%-40%；SiO2 Content: 40%-65%；
Above-mentioned blank is put into heat in kiln and is fired, when temperature is more than 1050 DEG C, starts a small amount of synthesis of dichroite, reaches A large amount of synthesis of dichroite in blank when to 1250 DEG C, as long as the content of cordierite is more than 30% in the finished product fired, energy Enough guarantee firing product keep not frying in 0 DEG C -600 DEG C of the cold and hot sudden turn of events not to be split.
Talcum powder 40% and boccaro 60% is taken to form mixed raw material, three component content after mixing are as follows:
MgO:32.95 × 0.4+0.43 × 0.6=13.44；
Al2O3: 0.96 × 0.4+34.13 × 0.6=20.86；
SiO2: 58.5 × 0.4+42.1 × 0.6=48.66；
Each component is containing the MgO that takes temperature close to 13.7, SiO after mixing2Close to 51.4, and Al2O3Content is relatively low, in order to make Al2O3Mol equivalent also close to 34.9, need that Al is added into mixed raw material2O3The commercial alumina that content is 97.5% 14%, MgO, Al in mixed blank2O3、SiO2, three components mol equivalent be respectively as follows: MgO:13.44%；Al2O3: 20.86%+97.5 × 14%=34.51%；SiO2: 48.66%.
Start with the beneficial effects of the present invention are: improving thermal shock resistance needs from ceramic raw material, there are manufactured goods low The coefficient of expansion, low-expansion material is without non-cordierite, spodumene, aluminium titanates, cordierite etc..Cordierite is one kind by talcum powder-alum Soil-clay (or talcum powder-kaolin), the composite material that congruent melting is formed, in long-term production practices, discovery Luoyang City is new An County has a kind of boccaro resource because containing AL2O3Higher, alumina silica ratio is extremely similar to kaolin, and iron oxide content is higher, anti-to produce Cracking purple casserole provides natural material.It is pressed using the distinctive this similar kaolin boccaro in Luoyang City Xinan County and talcum powder Certain proportion intergrinding, then base is burnt into purple casserole, and MgO, AL are made in sintering procedure2O3、SI2O3Ternary is as naturally anti- Synthesis of dichroite is answered, as long as the content of cordierite more than 30%, made ceramic can reach 0~600 in ceramic DEG C cold and hot indehiscent effect of the sudden turn of events.
The process that (kaolin+talcum+aluminium oxide) forms cordierite in picture is existing burning process；(boccaro+talcum + aluminium oxide) formed cordierite process be burning process of the invention；From picture as can be seen that with existing firing temperature 1400 DEG C are compared, and the cordierite that the present invention synthesizes in blank at 1250 DEG C has just accounted for 60%, the cordierite in ceramic As long as content more than 30%, made ceramic can reach 0~600 DEG C of cold and hot indehiscent effect of the sudden turn of events, make cordierite Synthesis temperature reduce nearly 200 DEG C.
It will be appreciated that the synthesis of cordierite, firing temperature need to reach 1350 DEG C~1400 DEG C, and the present invention fires boccaro ware Temperature at 1300 DEG C hereinafter, reduce firing temperature, keep the synthesis of cordierite big in the case where lower and temperature-controllable Amount generates, and can guarantee not damage kiln while cordierite synthesis rate again.
One, synthesis temperature can be made to drop using the boccaro, talcum powder and industrial alumina powder that meet ingredient requirement of the present invention Low 100 DEG C or more；
Two, K in ideal cordierite synthesis2O、Na2O content generally requires to be no more than 0.2%, used in the present invention former Expect K2ONa2O content is in 0.4% or so, K2ONa2O is extraordinary fluxing agent, and CaO is also fluxing agent；
Three, Fe in the kaolinic boccaro of current class2O3Content is obviously higher, in 8% or so, in practice, Fe2O3Every liter High 1% can make firing temperature reduce by 10 degree, and Fe in the mixed raw material in the present invention2O3Content 5% or so.
Detailed description of the invention
The present invention will be further explained below with reference to the attached drawings:
Fig. 1 is the effect of the burning process of the existing burning process for forming cordierite process and present invention formation cordierite process Fruit comparison diagram.
Specific embodiment
Below with reference to embodiment, invention is further described in detail with specific embodiment:
Embodiment 1
The chemical analysis of boccaro are as follows: SiO2: 42.10, Al2O3: 34.13, Fe2O3: 8.06, CaO:0.57, MgO:0.43, K2ONa2O:0.5, loss on ignition: 13.48；
The chemical analysis of talcum powder are as follows: SiO2: 58.5, Al2O3: 0.96, Fe2O3: 0.18, CaO:0.18, MgO:32.95, K2ONa2O:0.25, loss on ignition: 6.84；
The chemical analysis of industrial alumina powder are as follows: Al2O3: 97.5, SiO2: 0.003, Fe2O3: 0.01, Na2O:0.3, ZnO: 0.02, moisture content: 0.5, loss on ignition: 1；
Cordierite chemical formula is 2MgO:2Al2O3: 5SiO2, moL equivalent is 2:2:5, and theoretical chemistry forms: MgO 13.7, Al2O3It is 34.9, SiO2It is 51.4；
In order to reach this ideal moL equivalent, at mixed after talcum powder 35-45% and boccaro 55-65% is mixed Raw material is closed, Al is added into mixed raw material2O3Content is the commercial alumina 12-15% of 96-98%, in mixed blank MgO、Al2O3、SiO2, the mol equivalent of three components is respectively as follows: content of MgO: 10%-16%；Al2O3Content: 20%-40%；SiO2 Content: 40%-65%；
Above-mentioned blank is put into heat in kiln and is fired, when temperature is more than 1050 DEG C, starts a small amount of synthesis of dichroite, reaches A large amount of synthesis of dichroite in blank when to 1250 DEG C, as long as the content of cordierite is more than 30% in the finished product fired, energy Enough guarantee firing product keep not frying in 0 DEG C -600 DEG C of the cold and hot sudden turn of events not to be split.
Embodiment 2
Talcum powder 40% and boccaro 60% is taken to form mixed raw material, three component content after mixing are as follows:
MgO:32.95 × 0.4+0.43 × 0.6=13.44；
Al2O3: 0.96 × 0.4+34.13 × 0.6=20.86；
SiO2: 58.5 × 0.4+42.1 × 0.6=48.66；
Each component is containing the MgO that takes temperature close to 13.7, SiO after mixing2Close to 51.4, and Al2O3Content is relatively low, in order to make Al2O3Mol equivalent also close to 34.9, need that Al is added into mixed raw material2O3The commercial alumina that content is 97.5% 14%, MgO, Al in mixed blank2O3、SiO2, three components mol equivalent be respectively as follows: MgO:13.44%；Al2O3: 20.86%+97.5 × 14%=34.51%；SiO2: 48.66%.

Claims (2)

1. a kind of compound formulation of boccaro anticracking vessel, it is characterised in that:
The chemical analysis of boccaro are as follows: SiO2: 42.10, Al2O3: 34.13, Fe2O3: 8.06, CaO:0.57, MgO:0.43, K2ONa2O:0.5, loss on ignition: 13.48；
The chemical analysis of talcum powder are as follows: SiO2: 58.5, Al2O3: 0.96, Fe2O3: 0.18, CaO:0.18, MgO:32.95, K2ONa2O:0.25, loss on ignition: 6.84；
The chemical analysis of industrial alumina powder are as follows: Al2O3: 97.5, SiO2: 0.003, Fe2O3: 0.01, Na2O:0.3, ZnO: 0.02, moisture content: 0.5, loss on ignition: 1；
Cordierite chemical formula is 2MgO:2Al2O3: 5SiO2, moL equivalent is 2:2:5, theoretical chemistry composition: MgO 13.7, Al2O3 It is 34.9, SiO2It is 51.4；
It is former at mixing after talcum powder 35-45% and boccaro 55-65% is mixed in order to reach this ideal moL equivalent Material, Al is added into mixed raw material2O3Content is the commercial alumina 12-15% of 96-98%, MgO in mixed blank, Al2O3、SiO2, the mol equivalent of three components is respectively as follows: content of MgO: 10%-16%；Al2O3Content: 20%-40%；SiO2Contain Amount: 40%-65%；
Above-mentioned blank is put into heat in kiln and is fired, when temperature is more than 1050 DEG C, starts a small amount of synthesis of dichroite, reaches A large amount of synthesis of dichroite in blank at 1250 DEG C, as long as the content of cordierite is more than 30% in the finished product fired, it will be able to Guarantee that firing product keep not frying in 0 DEG C -600 DEG C of the cold and hot sudden turn of events not splitting.
2. a kind of compound formulation of boccaro anticracking vessel according to claim 1, it is characterised in that: take 40% He of talcum powder Boccaro 60% forms mixed raw material, three component content after mixing are as follows:
MgO:32.95 × 0.4+0.43 × 0.6=13.44；
Al2O3: 0.96 × 0.4+34.13 × 0.6=20.86；
SiO2: 58.5 × 0.4+42.1 × 0.6=48.66；
Each component is containing the MgO that takes temperature close to 13.7, SiO after mixing2Close to 51.4, and Al2O3Content is relatively low, in order to make Al2O3's Mol equivalent also close to 34.9 needs that Al is added into mixed raw material2O3The commercial alumina 14% that content is 97.5%, after mixing Blank in MgO, Al2O3、SiO2, three components mol equivalent be respectively as follows: MgO:13.44%；Al2O3: 20.86%+97.5 × 14%=34.51%；SiO2: 48.66%.
CN201910813242.5A 2019-08-30 2019-08-30 A kind of compound formulation of boccaro anticracking vessel Pending CN110423106A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115594486A (en) * 2022-11-15 2023-01-13 景德镇陶瓷大学（Cn） Preparation method of low-expansion cordierite heat-resistant purple sand ceramic and product prepared by preparation method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02229760A (en) * 1985-05-14 1990-09-12 Ngk Insulators Ltd Production of low-expansion ceramics
CN101134672A (en) * 2007-07-17 2008-03-05 朱绍波 Heat-resistant purple sand ceramic mud and preparation method of product thereof
CN105218072A (en) * 2015-09-16 2016-01-06 景德镇陶瓷学院 A kind of high-heat resistance shock resistant cordierite heat-proof purple sand ceramic and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02229760A (en) * 1985-05-14 1990-09-12 Ngk Insulators Ltd Production of low-expansion ceramics
CN101134672A (en) * 2007-07-17 2008-03-05 朱绍波 Heat-resistant purple sand ceramic mud and preparation method of product thereof
CN105218072A (en) * 2015-09-16 2016-01-06 景德镇陶瓷学院 A kind of high-heat resistance shock resistant cordierite heat-proof purple sand ceramic and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115594486A (en) * 2022-11-15 2023-01-13 景德镇陶瓷大学（Cn） Preparation method of low-expansion cordierite heat-resistant purple sand ceramic and product prepared by preparation method
CN115594486B (en) * 2022-11-15 2023-08-22 景德镇陶瓷大学 Preparation method of low-expansion cordierite heat-resistant purple sand ceramic and product prepared by preparation method

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Application publication date: 20191108