CN104529488A - High-strength thermal-shock-resisting light heat-insulting fireproof brick and preparation method thereof - Google Patents

High-strength thermal-shock-resisting light heat-insulting fireproof brick and preparation method thereof Download PDF

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Publication number
CN104529488A
CN104529488A CN201410789904.7A CN201410789904A CN104529488A CN 104529488 A CN104529488 A CN 104529488A CN 201410789904 A CN201410789904 A CN 201410789904A CN 104529488 A CN104529488 A CN 104529488A
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powder
sio
parts
mullite
weight
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吴德华
吉从鹏
王芳
赵刚
吉小池
肖晓娜
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PINGDINGSHAN NEW TYPE REFRACTORIES Co Ltd
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PINGDINGSHAN NEW TYPE REFRACTORIES Co Ltd
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Abstract

The invention discloses a high-strength thermal-shock-resisting light heat-insulting fireproof brick and a preparation method thereof. The fireproof brick is prepared from the following raw materials in parts by weight: 50-55 parts of a light mullite aggregate, 8-10 parts of alpha-Al2O3 micro-powder, 12-15 parts of electric-melt mullite powder, 18-22 parts of talcum powder, 5-8 parts of kaolin powder, 2-2.5 parts of nanometer SiO2 powder and a binding agent of which the weight is 0.5-1 percent of the total weight of the components. The finished product prepared according to the prescription contains nanometer composite cordierite-mullite common crystal phase components; the problem of poor thermal shock resistance and short service life of the heat-insulating fireproof brick can be effectively solved; the finished product is good in thermal shock resistance, stable in high temperature resistance, resistant to high-temperature creep, capable of effectively preventing drop of bricks and cracking during use, long in service life, high in production efficiency and capable of avoiding huge economic loss of an enterprise due to shutdown maintenance.

Description

A kind of high-strength anti-thermal shock type light fire brick and preparation method thereof
Technical field
The present invention relates to novel refractory technical field, specifically the anti-thermal shock insulating fire brick of a kind of long term thermal impact erosion, hot industry furnace lining.
Background technology
At present, high-temperature industrial furnace pursues maximization, long lifetime and energy-conserving and environment-protective technology day by day.And these industrial furnace liner privileged sites such as ceramic roller kiln cooling zone (front end) furnace roof, hyperthermia tunnel Kiln kiln car are because bearing thermal shocking erosion for a long time and temperature sharply changes, not only need good heat-proof quality, and need the thermal shock resistance energy of good anti-rapid heat cycle.Obvious domestic existing light weight fireclay brick or light weeight alumina brick cannot meet technical need.Although the refractory brick having had anti-thermal shock type in prior art occurs, it is due to some defects of self batching, and the heat-resistant knocking stability causing product is not and optimum.
Summary of the invention
The object of the invention is, develop a kind of high-strength anti-thermal shock type light fire brick, solve insulating fire brick poor seismic behavior, work-ing life short technical problem.
In order to solve the problems of the technologies described above, the technical scheme that the present invention takes is: a kind of high-strength anti-thermal shock type light fire brick, count by weight, its raw material consists of: mullite lightweight aggregate 50-55 part, α-AL 2o 3micro mist 8-10 part, electrofused mullite powder 12-15 part, talcum powder 18-22 part, kaolin powder 5-8 part, Nano-meter SiO_2 2powder 2-2.5 part and weight are the bonding agent of said components gross weight 0.5-1%;
Described mullite lightweight aggregate is by AL 2o 3, SiO 2, TiO 2, Fe 2o 3the particle diameter fired after mixing with water is the spherical particle of 0.5-3.0mm, and its natural packing unit weight is 0.6-0.7g/cm 3, wherein the mass percentage of each component is AL 2o 350-53%, SiO 242-46%, TiO 21-1.5%, Fe 2o 30.8-1.0%.
Described α-AL 2o 3in the chemical composition of micro mist: AL 2o 3>=99%, SiO 2≤ 0.25%, Fe 2o 3≤ 0.05%, and its particle diameter≤325 order, in the chemical composition of described electrofused mullite powder: AL 2o 3>=71%, SiO 220-22%, Fe 2o 3≤ 0.5%, R 2o≤0.3%, and its particle diameter≤220 order; In described talcous chemical composition: SiO 2>=61%, MgO>=31%, AL 2o 3≤ 1.0%, R 2o≤0.4%, Fe 2o 3≤ 0.3%, and its particle diameter≤220 order; In the chemical composition of described kaolin powder: AL 2o 342-48%, SiO 244-50%, Fe 2o 3≤ 0.6%, TiO 2≤ 1%, R 2o≤0.8%, and its particle diameter≤260 order; Described Nano-meter SiO_2 2in the chemical composition of powder: SiO 2>=99.95%, and its particle diameter≤60 nm, specific surface area is 650-680 ㎡/g, natural deposited dry density < 0.12 g/cm 3, hydroxy radical content>=30%.
Described bonding agent is polyvinyl alcohol.
A preparation method for high-strength anti-thermal shock type light fire brick, comprises the following steps:
(1), mullite lightweight aggregate, α-AL is got by described parts by weight 2o 3micro mist, electrofused mullite powder, talcum powder, kaolin powder and Nano-meter SiO_2 2powder, is being uniformly mixed in process, adds bonding agent and 3-4 part water wherein, after stirring, for subsequent use;
(2), the material be stirred is carried out vibratory compaction;
(3), by the adobe after shaping send in tunnel drier, at the uniform velocity dry under 40-120 DEG C of condition;
(4), by the adobe of drying send in the hyperthermia tunnel Kiln of 1550 ± 10 DEG C and fire, get product after Temperature fall.
Beneficial effect:
One of the present invention high-strength anti-thermal shock type light fire brick, containing the common crystalline phase composition of nano combined dichroite-mullite, effectively can solve insulating fire brick poor seismic behavior, work-ing life short problem, finished product thermal shock resistance is good, and resistance to elevated temperatures is stablized, high temperature creep-resisting, in use effectively prevent brick, cracked, long service life, production efficiency is high, avoids because the very big financial loss caused to enterprise is keeped in repair in blowing out.
Embodiment
A kind of high-strength anti-thermal shock type light fire brick, count by weight, its raw material consists of: mullite lightweight aggregate 50-55 part, α-AL 2o 3micro mist 8-10 part, electrofused mullite powder 12-15 part, talcum powder 18-22 part, kaolin powder 5-8 part, Nano-meter SiO_2 2powder 2-2.5 part and weight are the bonding agent of said components gross weight 0.5-1%;
Described mullite lightweight aggregate is by AL 2o 3, SiO 2, TiO 2, Fe 2o 3the particle diameter fired after mixing with water is the spherical particle of 0.5-3.0mm, and its natural packing unit weight is 0.6-0.7g/cm 3, wherein the mass percentage of each component is AL 2o 350-53%, SiO 242-46%, TiO 21-1.5%, Fe 2o 30.8-1.0%.
Described α-AL 2o 3in the chemical composition of micro mist: AL 2o 3>=99%, SiO 2≤ 0.25%, Fe 2o 3≤ 0.05%, and its particle diameter≤325 order, in the chemical composition of described electrofused mullite powder: AL 2o 3>=71%, SiO 220-22%, Fe 2o 3≤ 0.5%, R 2o≤0.3%, and its particle diameter≤220 order; In described talcous chemical composition: SiO 2>=61%, MgO>=31%, AL 2o 3≤ 1.0%, R 2o≤0.4%, Fe 2o 3≤ 0.3%, and its particle diameter≤220 order; In the chemical composition of described kaolin powder: AL 2o 342-48%, SiO 244-50%, Fe 2o 3≤ 0.6%, TiO 2≤ 1%, R 2o≤0.8%, and its particle diameter≤260 order; Described Nano-meter SiO_2 2in the chemical composition of powder: SiO 2>=99.95%, and its particle diameter≤60 nm, specific surface area is 650-680 ㎡/g, natural deposited dry density < 0.12 g/cm 3, hydroxy radical content>=30%.
Described bonding agent is polyvinyl alcohol, its mean polymerisation degree DP1700-1800; Acid number :≤3.0%; Viscosity: 21-26map.s; Basicity: 86-89; Fineness 200 order.
A preparation method for high-strength anti-thermal shock type light fire brick, comprises the following steps:
(1), mullite lightweight aggregate, α-AL is got by described parts by weight 2o 3micro mist, electrofused mullite powder, talcum powder, kaolin powder, then add Nano-meter SiO_2 wherein 2powder, drops into horizontal mixer starting material good for proportioning and stirs, add 3-4 part water and bonding agent in whipping process, after stirring, for subsequent use;
(2), the material be stirred is undertaken shaping by 160T numerical control vibration forming machine;
(3), by the adobe after shaping send in tunnel drier, at the uniform velocity dry under 40-120 DEG C of condition;
(4), by the adobe Cheng Zhu of oven dry be contained in the intelligent hyperthermia tunnel Kiln of feeding 1550 ± 10 DEG C on kiln car and fire, get product after Temperature fall.
The present invention adopts the raw material coordination of the technological line of autonomous innovation, the grain composition of science and optimization, has prepared a kind of high-strength anti-thermal shock type light fire brick containing nano combined dichroite-mullite.This technology has two key problem in technology points: 1, be make full use of the little and mullite crystalline phase resistance to elevated temperatures of cordierite crystalline phase thermal expansivity to stablize, and crystalline phase composition becomes excellent characteristic, and science controls its crystalline phase composition.Trichroite (2MgO2AL 2o 35SiO 2): mullite (3AL 2o 32SiO 2)=3:7, impels its thermal shock resistance to reach optimum.2, be introduce nanotechnology, trace adds Nano-meter SiO_2 2, improve the toughness of product further, improve resistance to elevated temperatures, to improve its thermal shock resistance and high temperature creep resistance.
The technology of the present invention innovative point be product form by a firing after finished product in be dichroite-mullite common crystalline phase composition, reduce association glass crystalline phase and cristobalite crystalline phase.Trichroite has that thermal expansivity is little, good thermal shock stability but resistance to elevated temperatures characteristic on the low side, and mullite has the large but characteristic that thermal expansivity is large of excellent, the withstand voltage folding strength of resistance to elevated temperatures.How to make two crystalline phase mutual supplement with each other's advantages symbiosis exist, research shows to consist of when crystalline phase: trichroite (2MgO2AL 2o 35SiO 2): mullite (3AL 2o 32SiO 2during)=3:7, product performance are comprehensively optimum.With the kaolin ore of routine for research object, for its mineralogical character, select kaolin, α-AL 2o 3micro mist, talcum, light-weight mullite aggregate, electrofused mullite powder basic technology proportioning, form 3 parts of trichroites and 7 parts of mullites for technological standard scientific matching with crystalline phase.Test proves, product is due to the impact of dirt in high-temperature burning process, and more or less association has glassy phase and free cristobalite crystalline phase, not only reduce the resistance to elevated temperatures of product, and thermal expansivity obviously increases, therefore adds Nano-meter SiO_2 in right amount 2product performance are significantly improved.Nano-meter SiO_2 2particle diameter little (60nm) surface energy is high, and surface atom coordination is not enough, has high reactivity, adsorbs binding property by force, be easy to and other atom association reaction.Nano-meter SiO_2 2introduce as trace mineral supplement, improve coking property and the microstructure of product, thus strongly affect the mechanical property of product.Nano-meter SiO_2 2powder is distributed between particles of aggregates or in particle, makes crystal grain, lattice distorts, acceleration of sintering.Meanwhile, in crystal grain, form interface many times, when product is heated stress, the partially continuous or crackle of crackle can be caused by nail, improve breaking tenacity and the toughness of product, improve resistance to elevated temperatures, improve heat-shock resistance and high temperature creep.Test shows, adds Nano-meter SiO_2 in right amount 2powder (1-2%), significantly can improve the mechanical property of product, its compressive strength with do not add Nano-meter SiO_2 2compare increase by 1.5 times, thermal shock resistance increase by 2.2 times (test of products data be 1100 DEG C of air coolings reach>=80 times).Meanwhile, complete in order to ensure dichroite-mullite crystal development, need powder to grind altogether through ball mill, fineness ultra micro, prevent R in kaolin, talcum 2o, Fe 2o 3impurity effect, need choose classification, deep processing, and high gradient magnetic separator removing impurity, suppresses silex glass to be formed mutually.
embodiment 1
A kind of high-strength anti-thermal shock type light fire brick, count by weight, its raw material consists of: mullite lightweight aggregate 50 parts, α-AL 2o 3micro mist 8 parts, 12 parts, electrofused mullite powder, talcum powder 18 parts, kaolin powder 5 parts, Nano-meter SiO_2 22 parts, powder and weight are the polyvinyl alcohol of said components gross weight 0.5%;
Described mullite lightweight aggregate is by AL 2o 3, SiO 2, TiO 2, Fe 2o 3the particle diameter fired after mixing with water is the spherical particle of 0.5mm, and its natural packing unit weight is 0.6g/cm 3, wherein the mass percentage of each component is AL 2o 350%, SiO 242%, TiO 21%, Fe 2o 30.8%.
Described α-AL 2o 3in the chemical composition of micro mist: AL 2o 3>=99%, SiO 2≤ 0.25%, Fe 2o 3≤ 0.05%, and its particle diameter≤325 order, in the chemical composition of described electrofused mullite powder: AL 2o 3>=71%, SiO 220-22%, Fe 2o 3≤ 0.5%, R 2o≤0.3%, and its particle diameter≤220 order; In described talcous chemical composition: SiO 2>=61%, MgO>=31%, AL 2o 3≤ 1.0%, R 2o≤0.4%, Fe 2o 3≤ 0.3%, and its particle diameter≤220 order; In the chemical composition of described kaolin powder: AL 2o 342-48%, SiO 244-50%, Fe 2o 3≤ 0.6%, TiO 2≤ 1%, R 2o≤0.8%, and its particle diameter≤260 order; Described Nano-meter SiO_2 2in the chemical composition of powder: SiO 2>=99.95%, and its particle diameter≤60 nm, specific surface area is 650-680 ㎡/g, natural deposited dry density < 0.12 g/cm 3, hydroxy radical content>=30%.
A preparation method for high-strength anti-thermal shock type light fire brick, comprises the following steps:
(1), mullite lightweight aggregate, α-AL is got by described parts by weight 2o 3micro mist, electrofused mullite powder, talcum powder, kaolin powder and Nano-meter SiO_2 2powder, is being uniformly mixed in process, adds bonding agent and 3 parts of water wherein, after stirring, for subsequent use;
(2), the material be stirred is carried out vibratory compaction;
(3), by the adobe after shaping send in tunnel drier, at the uniform velocity dry under 40 DEG C of conditions;
(4), by the adobe of oven dry send in the hyperthermia tunnel Kiln of 1540 DEG C and fire, get product after Temperature fall.
embodiment 2
A kind of high-strength anti-thermal shock type light fire brick, count by weight, its raw material consists of: mullite lightweight aggregate 53 parts, α-AL 2o 3micro mist 9 parts, 13 parts, electrofused mullite powder, talcum powder 20 parts, kaolin powder 7 parts, Nano-meter SiO_2 22.2 parts, powder and weight are the polyvinyl alcohol of said components gross weight 0.8%;
Described mullite lightweight aggregate is by AL 2o 3, SiO 2, TiO 2, Fe 2o 3the particle diameter fired after mixing with water is the spherical particle of 2.1mm, and its natural packing unit weight is 0.6-0.7g/cm 3, wherein the mass percentage of each component is AL 2o 350-53%, SiO 242-46%, TiO 21-1.5%, Fe 2o 30.8-1.0%.
Described α-AL 2o 3in the chemical composition of micro mist: AL 2o 3>=99%, SiO 2≤ 0.25%, Fe 2o 3≤ 0.05%, and its particle diameter≤325 order, in the chemical composition of described electrofused mullite powder: AL 2o 3>=71%, SiO 220-22%, Fe 2o 3≤ 0.5%, R 2o≤0.3%, and its particle diameter≤220 order; In described talcous chemical composition: SiO 2>=61%, MgO>=31%, AL 2o 3≤ 1.0%, R 2o≤0.4%, Fe 2o 3≤ 0.3%, and its particle diameter≤220 order; In the chemical composition of described kaolin powder: AL 2o 342-48%, SiO 244-50%, Fe 2o 3≤ 0.6%, TiO 2≤ 1%, R 2o≤0.8%, and its particle diameter≤260 order; Described Nano-meter SiO_2 2in the chemical composition of powder: SiO 2>=99.95%, and its particle diameter≤60 nm, specific surface area is 650-680 ㎡/g, natural deposited dry density < 0.12 g/cm 3, hydroxy radical content>=30%.
A preparation method for high-strength anti-thermal shock type light fire brick, comprises the following steps:
(1), mullite lightweight aggregate, α-AL is got by described parts by weight 2o 3micro mist, electrofused mullite powder, talcum powder, kaolin powder and Nano-meter SiO_2 2powder, is being uniformly mixed in process, adds bonding agent and 3.5 parts of water wherein, after stirring, for subsequent use;
(2), the material be stirred is carried out vibratory compaction;
(3), by the adobe after shaping send in tunnel drier, at the uniform velocity dry under 90 DEG C of conditions;
(4), by the adobe of oven dry send in the hyperthermia tunnel Kiln of 1550 DEG C and fire, get product after Temperature fall.
embodiment 3
A kind of high-strength anti-thermal shock type light fire brick, count by weight, its raw material consists of: mullite lightweight aggregate 55 parts, α-AL 2o 3micro mist 10 parts, 15 parts, electrofused mullite powder, talcum powder 22 parts, kaolin powder 8 parts, Nano-meter SiO_2 22.5 parts, powder and weight are the polyvinyl alcohol of said components gross weight 1%;
Described mullite lightweight aggregate is by AL 2o 3, SiO 2, TiO 2, Fe 2o 3the particle diameter fired after mixing with water is the spherical particle of 3.0mm, and its natural packing unit weight is 0.6-0.7g/cm 3, wherein the mass percentage of each component is AL 2o 350-53%, SiO 242-46%, TiO 21-1.5%, Fe 2o 30.8-1.0%.
Described α-AL 2o 3in the chemical composition of micro mist: AL 2o 3>=99%, SiO 2≤ 0.25%, Fe 2o 3≤ 0.05%, and its particle diameter≤325 order, in the chemical composition of described electrofused mullite powder: AL 2o 3>=71%, SiO 220-22%, Fe 2o 3≤ 0.5%, R 2o≤0.3%, and its particle diameter≤220 order; In described talcous chemical composition: SiO 2>=61%, MgO>=31%, AL 2o 3≤ 1.0%, R 2o≤0.4%, Fe 2o 3≤ 0.3%, and its particle diameter≤220 order; In the chemical composition of described kaolin powder: AL 2o 342-48%, SiO 244-50%, Fe 2o 3≤ 0.6%, TiO 2≤ 1%, R 2o≤0.8%, and its particle diameter≤260 order; Described Nano-meter SiO_2 2in the chemical composition of powder: SiO 2>=99.95%, and its particle diameter≤60 nm, specific surface area is 650-680 ㎡/g, natural deposited dry density < 0.12 g/cm 3, hydroxy radical content>=30%.
A preparation method for high-strength anti-thermal shock type light fire brick, comprises the following steps:
(1), mullite lightweight aggregate, α-AL is got by described parts by weight 2o 3micro mist, electrofused mullite powder, talcum powder, kaolin powder and Nano-meter SiO_2 2powder, is being uniformly mixed in process, adds bonding agent and 4 parts of water wherein, after stirring, for subsequent use;
(2), the material be stirred is carried out vibratory compaction;
(3), by the adobe after shaping send in tunnel drier, at the uniform velocity dry under 40-120 DEG C of condition;
(4), by the adobe of drying send in the hyperthermia tunnel Kiln of 1550 ± 10 DEG C and fire, get product after Temperature fall.
Carry out measured performance parameter to the nano combined dichroite-mullite high-strength anti-thermal shock type light fire brick obtained by the present invention, its measurement result is: volume density g/cm 3≤ 1.2; Thermal conductivity (350 ± 25 DEG C)≤0.38W/m.k; Linear change rate 1400 DEG C × 12h (%)≤0.5; Compressive strength MPa>=10; Thermal shock resistance 1100 DEG C of air coolings (secondary)>=80; AL 2o 3(%)>=60; Fe 2o 3(%)≤1.0, MgO (%)>=2.8.

Claims (4)

1. a high-strength anti-thermal shock type light fire brick, it is characterized in that: count by weight, its raw material consists of: mullite lightweight aggregate 50-55 part, α-AL 2o 3micro mist 8-10 part, electrofused mullite powder 12-15 part, talcum powder 18-22 part, kaolin powder 5-8 part, Nano-meter SiO_2 2powder 2-2.5 part and weight are the bonding agent of said components gross weight 0.5-1% and the water of 18-20%;
Described mullite lightweight aggregate is by AL 2o 3, SiO 2, TiO 2, Fe 2o 3the particle diameter fired after mixing with water is the spherical particle of 0.5-3.0mm, and its natural packing unit weight is 0.6-0.7g/cm 3, wherein the mass percentage of each component is AL 2o 350-53%, SiO 242-46%, TiO 21-1.5%, Fe 2o 30.8-1.0%.
2. a kind of high-strength anti-thermal shock type light fire brick as claimed in claim 1, is characterized in that: described α-AL 2o 3in the chemical composition of micro mist: according to weight percent, AL 2o 3>=99%, SiO 2≤ 0.25%, Fe 2o 3≤ 0.05%, and its particle diameter≤325 order, in the chemical composition of described electrofused mullite powder: according to weight percent, AL 2o 3>=71%, SiO 220-22%, Fe 2o 3≤ 0.5%, R 2o≤0.3%, and its particle diameter≤220 order; In described talcous chemical composition: according to weight percent, SiO 2>=61%, MgO>=31%, AL 2o 3≤ 1.0%, R 2o≤0.4%, Fe 2o 3≤ 0.3%, and its particle diameter≤220 order; In the chemical composition of described kaolin powder: according to weight percent, AL 2o 342-48%, SiO 244-50%, Fe 2o 3≤ 0.6%, TiO 2≤ 1%, R 2o≤0.8%, and its particle diameter≤260 order; Described Nano-meter SiO_2 2in the chemical composition of powder: according to weight percent, SiO 2>=99.95%, and its particle diameter≤60 nm, specific surface area is 650-680 ㎡/g, natural deposited dry density < 0.12 g/ cm 3, hydroxy radical content>=30%.
3. a kind of high-strength anti-thermal shock type light fire brick as claimed in claim 1, is characterized in that: described bonding agent is polyvinyl alcohol.
4. the preparation method of a kind of high-strength anti-thermal shock type light fire brick as claimed in claim 1, is characterized in that, comprise the following steps:
(1), mullite lightweight aggregate, α-AL is got by described parts by weight 2o 3micro mist, electrofused mullite powder, talcum powder, kaolin powder and Nano-meter SiO_2 2powder, is being uniformly mixed in process, is adding bonding agent and water wherein, after stirring, for subsequent use;
(2), the material be stirred is carried out vibratory compaction;
(3), by the adobe after shaping send in tunnel drier, at the uniform velocity dry under 40-120 DEG C of condition;
(4), by the adobe of drying send in the hyperthermia tunnel Kiln of 1550 ± 10 DEG C and fire, get product after Temperature fall.
CN201410789904.7A 2014-12-19 2014-12-19 High-strength thermal-shock-resisting light heat-insulting fireproof brick and preparation method thereof Pending CN104529488A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109912300A (en) * 2019-05-06 2019-06-21 永州明睿陶瓷科技有限公司 A kind of low-density high-heat resistance shock resistant composite ceramic material and preparation method thereof and preparation method
CN110204322A (en) * 2019-05-15 2019-09-06 唐山市凯伦保温材料有限公司 A kind of mullite insulating fire brick and preparation method thereof
CN111978077A (en) * 2020-08-05 2020-11-24 河南好运祥耐材有限公司 Cordierite-containing composite refractory material for dry quenching coke tank and bin body working lining
CN112299834A (en) * 2020-11-13 2021-02-02 苏木兰 Production process for producing refractory brick by cordierite processing

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
卜景龙等: "莫来石-堇青石质冶金用陶瓷过滤器的研制", 《中国陶瓷工业》 *
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109912300A (en) * 2019-05-06 2019-06-21 永州明睿陶瓷科技有限公司 A kind of low-density high-heat resistance shock resistant composite ceramic material and preparation method thereof and preparation method
CN110204322A (en) * 2019-05-15 2019-09-06 唐山市凯伦保温材料有限公司 A kind of mullite insulating fire brick and preparation method thereof
CN110204322B (en) * 2019-05-15 2021-07-27 唐山市凯伦保温材料有限公司 Mullite heat-insulating refractory brick and preparation method thereof
CN111978077A (en) * 2020-08-05 2020-11-24 河南好运祥耐材有限公司 Cordierite-containing composite refractory material for dry quenching coke tank and bin body working lining
CN112299834A (en) * 2020-11-13 2021-02-02 苏木兰 Production process for producing refractory brick by cordierite processing

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Application publication date: 20150422