CN1765809A - Sintering brick additive and coal ash sintering brick highly doped with same - Google Patents
Sintering brick additive and coal ash sintering brick highly doped with same Download PDFInfo
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- CN1765809A CN1765809A CNA2005100806324A CN200510080632A CN1765809A CN 1765809 A CN1765809 A CN 1765809A CN A2005100806324 A CNA2005100806324 A CN A2005100806324A CN 200510080632 A CN200510080632 A CN 200510080632A CN 1765809 A CN1765809 A CN 1765809A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
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- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The invention provides an additive for fly-ash sintered brick with agglomerant, water reducer, dispersant and intensifier by special proportion. This invnetion also provides corresponding process method, which can increase the blending quantity of fly-ash to 85%, improves material plasticity, and produces much better product.
Description
Technical field
The present invention relates to building material field, be specifically related to a kind of additive that can be used for vitrified brick, this additive is particularly useful for producing high-dosage flyash sintered brick, the invention still further relates to the technology of utilizing this additive preparation high-dosage flyash sintered brick.
Background technology
Solid clay brick is traditional materials for wall, and especially in China, the use of solid clay brick accounts for more than 70% of materials for wall total amount.Yet the mass production solid clay brick will be cut the earth and be ruined the field, the land resources of consume valuable, the havoc eubiosis.For many years, the order of forbidding producing and using solid clay brick in national part city is repeatedly assigned about ministries and commissions by country.
In order to reduce the clay consumption of brickmaking industry, also to satisfy the needs of construction industry simultaneously, a lot of brickmaking enterprises begin to utilize flyash production coal ash sintering brick to replace solid clay brick over nearly 30 years, has certain effect for the use that reduces clay, but in the suitability for industrialized production of reality, be subjected to the restriction of technical factor, the volume of flyash only is 30-40% in the coal ash sintering brick that most of enterprise produced, and the consumption of clay is still up to 60-70%.Why doping quantity of fly ash is difficult to break through the 30-40% high point, and key is that flyash itself is a kind of powdery, non-cohesive material, and the plasticity of mixing the adobe material many will descend, and causes and can not squeeze qualified adobe, also just can not burn qualified brick.
Utilize fly-ash-containedly more than 50%, for example the brick fired of the raw material of 60-80% is called high-dosage flyash sintered brick.As brickmaking industry technique known, in the solid clay brick raw material, mix and be not higher than 30% flyash, need not change its production technique and just can produce qualified solid clay brick product; When the volume of flyash reaches the 40-50% of raw material total amount, must carry out certain adjustment transformation to original production process, otherwise can not stably produce qualified solid clay brick; And when the incorporation of flyash was higher than 50%, the clay volume was significantly reduced, and essential change has just taken place raw material properties.Must add certain quantity of additive this moment, and original production process is carried out certain transformation, just can produce qualified brick product.
On the other hand, China is the country based on coal fired power generation, it is annual because coal fired power generation can discharge a large amount of flyash, soil, a large amount of farmland been has not only has been occupied in the storage of these flyash, also can be to underground water resources, peripheral ecological environment is constituted severe contamination and harm, and from this point, flyash has become one of main public hazards in the present age.
State Planning Commission has spelt out the problem that the research and development (volume＞50%) of flyash in great mixed amount goods (brick) will be classified as focus development, research in [1991] No. 150 literary compositions " Chinese total utilization of PCA technical policy and essential implementation ".More domestic technical study and the report that are arranged about high-dosage flyash sintered brick of while, it is poor that its key is how to solve the plasticity of flyash, the defective that shrinkage coefficient is big, the method of taking generally is that the flyash as raw material is screened and handles, especially screen the suitable flyash of fineness, improve its specific surface area, require all to compare harsh for raw material and operational condition, for improving the plasticity of flyash, except adding certain amount of clay, also use for example glass cullet, the fusing assistant of yellow soda ash and mica powder one class, higher to processing requirement, the high-dosage flyash sintered brick that obtains is in stability, aspects such as ultimate compression strength can't adapt to suitability for industrialized production.
Use by mixing additive outward or improve and attempt producing high-dosage flyash sintered brick report is also arranged in recent years, in order to burn out energy instead of clay brick, the additive that is adopted is also by different forming, the report that can find is generally all only mentioned the flyash brick that burns out in ultimate compression strength, indexs such as water-intake rate are suitable with common brick, and how can further improve the performance of high blending flyash brick, under the prerequisite that does not increase production difficulty and cost, obtain in ultimate compression strength, apparent density and heat-proof quality all are better than the high blending flyash brick of clay brick, and also research is not reported.
No matter from which aspect, research and development utilize flyash as main material production high blending flyash brick, really realize the comprehensive utilization of flyash, improve the performance of existing vitrified brick simultaneously, all have very positive benefit.
Summary of the invention
One of main purpose of the present invention provides a kind of vitrified brick additive, by to the rational allocation of each component wherein, can be used for the production of coal ash sintering brick, especially can be used as the additive of producing high-dosage flyash sintered brick, not only help to improve the volume of flyash in vitrified brick, and help to improve the performance of coal ash sintering brick.
The present invention provides the method for preparing this additive simultaneously.
The present invention also provides the vitrified brick that utilizes this additive preparation, especially the preparation method of high-dosage flyash sintered brick and this vitrified brick.
At first, the invention provides a kind of additive that can be used for vitrified brick, or claim admixture, it is formulated by four following class components:
Category-A comprises carboxymethyl cellulose, sodium silicate solution and Triglycol distearate, and it is 2-3 that its corresponding part by weight closes: 1: 1;
Category-B comprises in sulfonated lignin, methylene dinaphthalene sulfonate, condensate of melamine sulfonate and formaldehyde and the beta-naphthalenesulfonic-acid formaldehyde condensation compound at least a;
The C class comprises in colophonium pyrolytic polymer, rosined soap and the alkylbenzene sulfonate at least a;
The D class, brown iron oxide or phosphoric acid salt;
Wherein, in the described additive of per 100 weight parts, the configuration proportion of above-mentioned kinds of ingredients is A: B: C: D=40-50: 5-10: 10-30: 10-30.
During this additive was formed, the carboxymethyl cellulose of category-A component (CMC), sodium silicate solution and Triglycol distearate (PEG400DS) can play bonding and thickening power; The sulfonated lignin of category-B component, methylene dinaphthalene sulfonate, beta-naphthalenesulfonic-acid formaldehyde condensation compound (commodity are called dispersing agent NNO) or melamine sulfonate and formaldehyde resin (melmac) play diffusion as dispersion agent; Colophonium pyrolytic polymer, rosined soap or the alkylbenzene sulfonate of C class component play the micropore effect; And the brown iron oxide (Fe of D class component
2O
3), phosphoric acid salt then plays enhancement as toughener, when especially using brown iron oxide, except helping to improve the intensity of vitrified brick, can also make the brick that burns out have red outward appearance.
In additive of the present invention was formed, preferred, described sulfonated lignin were its calcium salt or sodium salt, for example calcium lignin sulphonate, sodium lignosulfonate etc., and its molecular weight ranges is generally at 1000-100000; Described methylene dinaphthalene sulfonate can be its sodium salt or sylvite; Alkylbenzene sulfonate then belongs to the anion surfactant series products; Sodium silicate solution claims water glass or bubble flower alkali again, and the present invention is that to select density for use be the sodium silicate solution of 1.3-1.4 kg/liter or modulus M=3.1-3.4; The used phosphoric acid salt of the present invention is acid phosphate preferably, for example, and SODIUM PHOSPHATE, MONOBASIC or ammonium di-hydrogen phosphate etc.
According to the preferred embodiment of the invention, contained components contents ratio is in the additive of per 100 weight parts: category-A component 40-50, category-B component sulfonated lignin 5-10, C class component colophonium pyrolytic polymer 10-30, D class component brown iron oxide 10-30.
The preparation process of above-mentioned additive can take by weighing each component in proportion the back an amount of water of adding and finish by simple mixing, and product form can be paste.Preferred manufacturing procedure is the about 30-50 times of water of measuring described component total mass, earlier respectively with about 5-20 times of water dilution of himself quality evenly, add with all the other components again that stirring becomes the pasty state homogeneous body in the excess water with carboxymethyl cellulose and Triglycol distearate.
Additive of the present invention has adopted conventional industrial chemicals through scientific and reasonable combination, selecting for use of component is different fully with prior art with proportioning, be used for the brickmaking process and can realize that maximum ground improves the addition content of flyash, reduce the consumption of brick medium clay soil, produce the fired fly ash brick of high volume.
Additive of the present invention is the outer adding assistant of a kind of novel vitrified brick, the contriver discloses through a large amount of tests, additive of the present invention is used for the production of vitrified brick, especially in the production of coal ash sintering brick, combination and acting in conjunction by multiple composition, can improve brick-making raw material more effectively, especially with flyash plasticity and other physical properties of the raw material of major ingredient, do not need special sintering technology just can produce and use for many years clay solid brick quite even the high blending flyash brick that improves of performance, and as offering brickmaking enterprise after the concentrated manufacturing of a kind of industrialization product, promptly guarantee the stable of quality, also reduced the cost and the technology difficulty of brickmaking.
Another aspect of the present invention has provided high-dosage flyash sintered brick and production technique thereof.
The raw material of coal ash sintering brick of the present invention is formed and is comprised: the flyash major ingredient of 80-85%, the binding agent of 15-20%; Aforementioned additive is as admixture, and its outer volume is 3-5%.
Raw material mixed make adobe, firedly be described high-dosage flyash sintered brick product.
Can see, in coal ash sintering brick prescription of the present invention, flyash is as major ingredient, the clay consumption significantly reduces, far can not compare with the mixed plasticity of the raw material of such composition structure with clay, and the present invention can utilize such raw material to burn out qualified brick, and key has been to use special additive as the admixture auxiliary agent.
The contriver finds in test, owing to use above-mentioned admixture auxiliary agent to guarantee the production of vitrified brick from the following aspect: one, improved because the flyash consumption is big the defective that the material plasticity that the clay consumption brings less reduces; Two, the fine coal fusion point of ash is than clay height, and the use of an amount of additive has reduced the sintering temperature of adobe, helps improving roasting quality; Three, because auxiliary agent contains the part dispersion agent, help material inhomogeneity improving in whipping process after the adding; Four, mix the water reducer that plays the micropore effect (C class component) and the toughener (D class component) that also contain simultaneously in the auxiliary agent outside this and then give the uniform closed pore structure of vitrified brick some amount, so both the density that has reduced brick had improved heat-insulating property, and the water-intake rate that has reduced brick again improves the anti-freezing property and the weather resistance of product.
The front is mentioned, and flyash has sufficient resources from the discharging of coal fired power generation industry, and vitrified brick production of the present invention has been played just and changed evil for beneficial, the effect that turns waste into wealth.As the brickmaking major ingredient time, the fineness of the flyash that hope is used is high as far as possible, and flyash is thin more, and the cohesiveness of blank will be good more, and loss on ignition is more little, helps blank forming.Because the viscosity of flyash is low, and easy deformation is shunk in sintering procedure, shrinks for reducing the full sized brick base, looks the nature difference of different sources flyash, can mix an amount of aggregate, for example slag or sand in the flyash major ingredient.The character that whether described aggregate needs and concrete incorporation is looked the flyash major ingredient, the sand content that also needs to look clay is determined.The particle of slag is thicker, suit to add as aggregate, play and reduce the effect that adobe is shunk when dry and roasting, on the other hand, fuel provided the roasting energy in the adding of slag also can be used as, so " flyash major ingredient " of the present invention can be made of flyash fully, also can contain an amount of aggregate (or claiming auxiliary material), for example in the flyash major ingredient, can add the slag of the 5-25% of flyash quality.
The shortcoming of flyash is that viscosity and plasticity are poor, though so be to be major ingredient with flyash in the raw material of the coal ash sintering brick that the present invention proposes, also need to add an amount of binding agent, for example can comprise clay, shale powder, spoil powder, wilkinite or their mixture.Take all factors into consideration, preferably use clay or shale powder.
In the production process of this coal ash sintering brick, the uniform mixing of raw material is very important for the quality of adobe, can feed intake according to the order of flyash, binding agent (clay), aggregate (if desired) and auxiliary agent aborning, join in advance by in the material after dried the mixing after the most handy mixing water dilution of auxiliary agent, continue to stir and can carry out green brick forming, the mixing of raw material is preferably adopted and is ground white silk method.The brick bat drying of forming to water ratio can adopt the ordinary method sintering less than 7% o'clock, considered the characteristics that doping quantity of fly ash is high, and maturing temperature is suitable to be controlled at 950-1050 ℃, especially suits 1000-1050 ℃ of roasting.
High-dosage flyash sintered brick of the present invention is by the use of specialist additive, in the brickmaking process specification and the character of raw material do not had particular requirement, guarantees that the high-dosage flyash sintered brick of producing has the specification of quality that meets relevant national standard.On this basis, applicant's test-results also shows, the vitrified brick product that adopts specialist additive production of the present invention be except improving the doping quantity of fly ash, also has the characteristics of intensity height, in light weight, good heat-insulation effect.According to the test result at engineering quality supervision verification test center, Heilongjiang Province, the ultimate compression strength mean value of the high-dosage flyash sintered brick that the present invention produces can reach 19.4MPa, is higher than the 10.0MPa of national standard; Apparent density can be lower than 1500kg/m
3, usually specification be the monolithic weight of clay brick of 0.24 * 0.115 * 0.053m at 2.5kg, and according to the monolithic weight of the coal ash sintering brick of the same specification of the inventive method preparation at 2.2kg; In addition, the thermal conductivity of unselected clay vitrified brick is generally about 0.7W/m.k, the thermal conductivity of the vitrified brick of the present invention's preparation can be low to moderate 0.486W/m.k, as seen, high-dosage flyash sintered brick of the present invention can substitute traditional clay brick fully, and because lower density and thermal conductivity is more suitable for the exterior wall tile material as buildings.
* this additive also has good result to shale vitrified brick, spoil vitrified brick.
Embodiment
Describe realization of the present invention and the beneficial functional that had in detail below in conjunction with specific embodiment, but only in order to help the reader to understand characteristics of the present invention and exploitativeness better, but practical range of the present invention can not be limited.
Embodiment 1
The configuration proportion of additive (weight): A: B: C: D=50: 10: 20: 20.
A: carboxymethyl cellulose (30 gram), sodium silicate solution (10 gram), the two stearates of polyoxyethylene glycol (10 gram);
B: calcium lignin sulphonate (10 gram);
C: colophonium pyrolytic polymer (20 gram);
D: ferric oxide powder (20 gram).
Compound method is as follows:
1, above various materials is prepared burden by above-mentioned computation weigh.
2, dilute, mix standby with 600 gram water carboxymethyl cellulose.
3, dilute, mix standby with 100 gram water Triglycol distearate.
4, with 2,3 and rest materials and 3700 gram water put into the container stirrer and stirred 10 minutes, make it become the pasty state homogeneous body and promptly get the used additive of example of the present invention.
Embodiment 2
The proportion scale of additive: A: B: C: D=40: 10: 30: 20
A: carboxymethyl cellulose (22 gram), sodium silicate solution (8 gram), the two stearates of polyoxyethylene glycol (10 gram).
B: condensate of melamine sulfonate and formaldehyde (10 gram).
C: alkylbenzene sulfonate (30 gram).
D: ferric oxide powder (20 gram).
Compound method is as follows:
1, above various materials is prepared burden by above-mentioned computation weigh.
2, dilute, mix standby with 400 gram water carboxymethyl cellulose.
3, dilute, mix standby with 200 gram water Triglycol distearate.
4, with 2,3 and rest materials and 3800 gram water put into the container stirrer and stirred 10 minutes, make it become the pasty state homogeneous body, promptly get additive of the present invention.
Embodiment 3
The proportion scale of additive: A: B: C: D=45: 5: 20: 30
Compound method is with embodiment 1.
Embodiment 4
The production of high-dosage flyash sintered brick
With raw materials for production in following ratio:
Flyash (Harbin the 3rd power plant's wet-discharged coal ash): 72 kilograms (ratio is 80%), clay: 18 kilograms (ratio is 20%), the additive of embodiment: 4.5 kilograms (ratio of mixing is 5% outward).To put into wheel roller (the auspicious permanent machine works in Harbin City provides) stone roller white silk 3-5 minute through the flyash and the clay of metering, and add additive and suitable quantity of water diluent and continue to grind white silk 3-5 minute, ageing 48 hours, material water ratio is controlled at 16-18%, and is standby.
The material that ageing is good is made adobe, and (monolithic specification 0.24 * 0.115 * 0.053m) through super-dry (water ratio less than 7% after), send into wheel kiln baking, is controlled 1050 ℃ of the highest maturing temperatures, can be made into high volume fired fly ash brick.
After testing, the index of the size deviation of this flyash brick and visual appearance aspect all meets relevant criterion, can be assessed as acceptable end product.
The test that the contriver also send engineering quality supervision verification test center, Heilongjiang Province to carry out indexs such as ultimate compression strength, weathering resistance performance this product, the result shows:
Ultimate compression strength (MPa): mean value 19.4; The variation coefficient 0.33; Monolithic minimum value 9.1;
5h boils and boils water-intake rate: mean value 20.5; Monolithic maximum value 21.3; Saturation factor mean value≤0.80; Monolithic maximum value≤0.83 of saturation factor.
Indexs such as scum, lime blowing, freeze thawing all meet " ordinary fired brick " standard of GB 5101-2003.
The monolithic weight 2.2kg of this brick, thermal conductivity 0.486W/m.k can be used for exterior wall tile.
Embodiment 5
The production of high-dosage flyash sintered brick
With raw materials for production in following ratio:
Flyash: 65 kilograms, slag (being ground into) less than 3mm: 20 kilograms, clay or shale powder: 15 kilograms, the additive of embodiment 2: 3 kilograms.
The preparation method of vitrified brick is with embodiment 1.
This brick body is brick-red, and every performance index are similar to embodiment 4.
Claims (10)
1, a kind of vitrified brick additive, it is formulated by four following class components:
Category-A comprises carboxymethyl cellulose, sodium silicate solution and Triglycol distearate, and it is 2-3 that its corresponding part by weight closes: 1: 1;
Category-B comprises in sulfonated lignin, methylene dinaphthalene sulfonate, condensate of melamine sulfonate and formaldehyde and the beta-naphthalenesulfonic-acid formaldehyde condensation compound at least a;
The C class comprises in colophonium pyrolytic polymer, rosined soap and the alkylbenzene sulfonate at least a;
The D class, brown iron oxide or phosphoric acid salt;
In the described additive of per 100 weight parts, the configuration proportion of above-mentioned kinds of ingredients is A: B: C: D=40-50: 5-10: 10-30: 10-30.
2, the described additive of claim 1, wherein, the density of described sodium silicate solution is the 1.3-1.4 kg/liter.
3, the described additive of claim 1, wherein, described sulfonated lignin are calcium lignin sulphonate or sodium lignosulfonate; Described methylene dinaphthalene sulfonate is its sodium salt or sylvite.
4, the described additive of claim 1, wherein, contained components contents ratio is in the additive of per 100 weight parts: category-A component 40-50, category-B component sulfonated lignin 5-10, C class component colophonium pyrolytic polymer 10-30, D class component brown iron oxide 10-30.
5, the preparation method of each described vitrified brick additive of claim 1-4, comprise: the 30-50 times of water of measuring described component total mass, with carboxymethyl cellulose and Triglycol distearate with 10-20 times of water dilution of himself quality evenly, adding to stir in the excess water with all the other components again becomes the pasty state homogeneous body respectively.
6, a kind of preparation method of coal ash sintering brick, its raw material is formed and is comprised: the flyash major ingredient of 80-85%, the binding agent of 15-20%; The additive of claim 1 record is as admixture, and its outer volume is 3-5%, raw material is mixed make adobe, the fired product that becomes.
7, the preparation method of the described coal ash sintering brick of claim 6, wherein, the mixing of raw material is adopted and is ground white silk method.
8, the preparation method of the described coal ash sintering brick of claim 6 wherein, also can comprise aggregate in the described flyash major ingredient, its addition based on flyash major ingredient weight for not being higher than 5-25%.
9, the preparation method of claim 6 or 8 described coal ash sintering bricks, wherein, described binding agent comprises clay, shale powder, spoil powder, wilkinite or their mixture.
10, the preparation method of the described coal ash sintering brick of claim 6 wherein, makes material realize uniform mixing in the form adding raw material of additive with the aqueous solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100806324A CN100349821C (en) | 2005-07-04 | 2005-07-04 | Sintering brick additive and coal ash sintering brick highly doped with same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100806324A CN100349821C (en) | 2005-07-04 | 2005-07-04 | Sintering brick additive and coal ash sintering brick highly doped with same |
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| CN1765809A true CN1765809A (en) | 2006-05-03 |
| CN100349821C CN100349821C (en) | 2007-11-21 |
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| CNB2005100806324A Expired - Fee Related CN100349821C (en) | 2005-07-04 | 2005-07-04 | Sintering brick additive and coal ash sintering brick highly doped with same |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101672080B (en) * | 2009-09-25 | 2011-04-20 | 周立忠 | Method for preparing high stone powder mixing quantity baked brick |
| CN102674742A (en) * | 2012-05-28 | 2012-09-19 | 武汉理工大学 | High-content fly-ash brick blank composite plasticizing agent and preparation process and application thereof |
| CN102718548A (en) * | 2012-06-22 | 2012-10-10 | 张书源 | Coal ash sintered brick and sintering process |
| CN105254278A (en) * | 2015-10-17 | 2016-01-20 | 无为县华标新型墙体材料有限公司 | Red fly ash sintered brick material |
| CN107879726A (en) * | 2017-12-05 | 2018-04-06 | 洛阳理工学院 | A kind of preparation method of coal ash sintering brick |
| CN109626963A (en) * | 2017-12-19 | 2019-04-16 | 郑州大学 | A kind of fired brick and preparation method thereof prepared using building waste and blast furnace slag |
| CN111423199A (en) * | 2020-04-03 | 2020-07-17 | 山西太钢不锈钢股份有限公司 | Method for utilizing acid regenerated iron powder in production of fly ash standard brick |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0955277A1 (en) * | 1998-04-28 | 1999-11-10 | Coöperatieve Verkoop- en Productievereniging van Aardappelmeel en Derivaten 'AVEBE' B.A. | Self-consolidating concrete comprising a polysaccharide additive |
| CN1181004C (en) * | 2001-08-03 | 2004-12-22 | 张炯辉 | Special-purpose additive for fly-ash sintered brick |
| CN1425628A (en) * | 2001-12-11 | 2003-06-25 | 王长生 | Light composite heat insulation block material |
| CN1280228C (en) * | 2003-12-31 | 2006-10-18 | 山西民兴实业有限公司 | Full fly ash building brick and its manufacturing method and special additive |
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2005
- 2005-07-04 CN CNB2005100806324A patent/CN100349821C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101672080B (en) * | 2009-09-25 | 2011-04-20 | 周立忠 | Method for preparing high stone powder mixing quantity baked brick |
| CN102674742A (en) * | 2012-05-28 | 2012-09-19 | 武汉理工大学 | High-content fly-ash brick blank composite plasticizing agent and preparation process and application thereof |
| CN102718548A (en) * | 2012-06-22 | 2012-10-10 | 张书源 | Coal ash sintered brick and sintering process |
| CN102718548B (en) * | 2012-06-22 | 2014-09-03 | 张书源 | Coal ash sintered brick and sintering process |
| CN105254278A (en) * | 2015-10-17 | 2016-01-20 | 无为县华标新型墙体材料有限公司 | Red fly ash sintered brick material |
| CN107879726A (en) * | 2017-12-05 | 2018-04-06 | 洛阳理工学院 | A kind of preparation method of coal ash sintering brick |
| CN107879726B (en) * | 2017-12-05 | 2021-03-02 | 洛阳理工学院 | Preparation method of fly ash sintered brick |
| CN109626963A (en) * | 2017-12-19 | 2019-04-16 | 郑州大学 | A kind of fired brick and preparation method thereof prepared using building waste and blast furnace slag |
| CN111423199A (en) * | 2020-04-03 | 2020-07-17 | 山西太钢不锈钢股份有限公司 | Method for utilizing acid regenerated iron powder in production of fly ash standard brick |
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| CN100349821C (en) | 2007-11-21 |
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