CN102260067A - Sintered brick with high content of tap water plant sludge and preparation method thereof - Google Patents
Sintered brick with high content of tap water plant sludge and preparation method thereof Download PDFInfo
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- CN102260067A CN102260067A CN2011101361037A CN201110136103A CN102260067A CN 102260067 A CN102260067 A CN 102260067A CN 2011101361037 A CN2011101361037 A CN 2011101361037A CN 201110136103 A CN201110136103 A CN 201110136103A CN 102260067 A CN102260067 A CN 102260067A
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- brick
- sludge
- mud
- alum sludge
- high volume
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention relates to a sintered brick with a high content of tap water plant sludge and a preparation method thereof, belonging to the technical field of brick making. The sintered brick is characterized by comprising the following curing materials and internal fuel in percentage by dry weight: 30-40% of tap water plant sludge with a moisture content of 6%, 30-40% of sludge with a moisture content of 6%, 0-15% of bentonite tailings, 5-10% of fly ash and 10-25% of gangue or slag. In the invention, waste tap water plant sludge is used as the main brick-making raw material at present, the utilization rate of the sludge is high, and the consumption of natural resources is low; and compared with the traditional common sintered brick, the sintered brick provided by the invention has the advantages of light self weight, less energy consumption, high strength and better heat insulation and sound insulation effects, and can produce significant economic and environmental benefits.
Description
Technical field
The present invention relates to a kind of high volume alum sludge vitrified brick and preparation method thereof, belong to the brick-making technology field.
Background technology
Along with the continuous propelling of the extensive civil engineering construction of China, brick also increases day by day as the demand of space enclosing structure material.In a lot of areas, vitrified brick is a main raw material with the clay still, and not only destruction arable land, and this solid clay brick production energy consumption height, poor, the brick body heaviness of heat insulation effect have inconvenience in the application process.Along with deeply the implementing and implementing of country's " prohibit real limit sticking " policy, adopt the research of non-clay feedstock production novel wall material like a raging fire, this is to protecting farmland, save energy, improving building function and the raising housing quality is significant.
The waterworks produces a large amount of poisonous and harmful mud after to former water treatment, and this mud is mainly from flocculation sedimentation tank and filter back washing spoil disposal water, through concentrate-processing of digestion-mechanical dehydration after gained.At present alum sludge is that land-based reactor is abandoned or sanitary landfill behind mechanical dehydration, so not only takies a large amount of land resourcess, increases the cost that Running-water Company handles mud, also surrounding enviroment even underground water and river, river resource is polluted.In view of the mineralogical composition in the mud is the main ingredient of many building materials, mud is effectively utilized as a kind of resource in addition, be to realize its innoxious effective means, and all there is the waterworks in cities and towns, sludge quantity is guaranteed, can accomplish scale production.Simultaneously, the cleaning amount of Taihu Lake mud is very big in recent years, also will take a large amount of fields as effectively not disposing in addition, causes secondary pollution.
At present, relevant patent report mainly contain following these:
Chinese patent literature CN 101830687A disclosed " method for producing bricks from silt and sludge ", its proportioning is: mud and mud 60 ~ 70%(water ratio about 60%), flyash 5 ~ 8%, chaff or wood chip 3 ~ 5%, the application of putting into production of thin cinder 18 ~ 20%, black sand 4 ~ 7%, existing portioned product.
Chinese patent literature CN 1413939A disclosed " production method of sludge baked brick ", its scheme is: mud is generally the wet mud of 5 ~ 50%(), commonly used is 30 ~ 50%, and all the other are shale part, and conventional base is baked bricks.Though this scheme can consume a certain amount of mud, it is the interior fuel of volume not, the energy consumption of baking bricks height, and still need mass consumption shale resource.
Chinese patent literature CN 101219887A disclosed " preparation method of municipal sludge brick and municipal sludge brick ", its proportioning is: 30 parts of municipal sludges, 40 ~ 80 parts of shale powder, 0 ~ 5 part of aluminium sesquioxide, preferred 2 ~ 4 parts, 0 ~ 4 part of ferric oxide, preferred 1 ~ 3 part, preferred 0 ~ 8 part of calcium oxide, preferred 4 ~ 6 parts.The defective of this scheme is that raw materials used component is many, and cost is high and be difficult to control.
Rarely have report for the comprehensive utilization of sewage sludge about the waterworks, it is still blank to use it for brickmaking research, and the mud utilization ratio is lower in most sludge baked brick, and volume all is lower than 25%(with dry weight basis).Therefore, adopt carrying out brickmaking research to sewage sludge and having remarkable economical and environmental benefit of high volume.
Summary of the invention
The purpose of this invention is to provide a kind of high volume alum sludge vitrified brick and preparation method thereof.
A kind of high volume alum sludge vitrified brick, it is characterized in that its solidify material and interior fuel choose and content is: alum sludge: with water ratio 6% dry weight basis 30% ~ 40%; Mud: with water ratio 6% dry weight basis 30% ~ 40%; Wilkinite mine tailing: 0% ~ 15%; Flyash: 5% ~ 10%; Coal gangue or slag: 10% ~ 25%; Each component is weight dry weight percentage meter.
The preparation method of described high volume alum sludge vitrified brick, it is characterized in that may further comprise the steps: (1), alum sludge, mud, wilkinite mine tailing, flyash, coal gangue or slag are sent into box feeding machine mix is sent to by conveyor then that brute force stirs in the biaxial rneader; (2), the adobe of different shapes and size will be crushed to after the above-mentioned compound ageing with the two-stage vacuum brick extruding machine; (3), utilize the roasting kiln waste heat that drying is carried out in adobe, make the adobe water ratio below 10%; (4), adobe that drying is good in tunnel furnace with 900 ℃ ~ 1000 ℃ high-temperature roastings.
Alum sludge generally is different from municipal wastewater treatment plant active sludge or paper mill mud, and between 15% ~ 25%, inorganic content is higher usually for its organic content.Being that its main component of example is: SiO from the Wuxi alum sludge
2, 44.26%; Al
2O
3, 23.62%; Fe
2O
3, 6.3%; CaO, 1.36%; MgO, 0.68%; K
2O, 1.85%; Na
2O, 0.65%; Loss on ignition is 19.96%.And municipal wastewater treatment plant active sludge or paper mill mud organic substance content is usually between 30% ~ 45%, the loss on ignition height, and this has just limited the application of its high volume.Yet, if only utilize alum sludge to come brickmaking, brick strength is low, and (solid brick intensity is no more than 4.0 ~ 6.0MPa), water-intake rate is up to 40%, linear shrinkage is big, easy loose cracking, and over-all properties is relatively poor, do not reach the performance requriements of common buildings, need to adopt solidify material its modification with materials for wall.The present invention is main raw material with the alum sludge, and volume mud, wilkinite mine tailing or both are mixed for again and are solidify material, and content fly ash and coal gangue or slag are as interior fuel production vitrified brick.
The wilkinite mine tailing is the abandon behind the preferred wilkinite, usually just be used to fill out the hole and build the road, the engineering economics value is lower, but it belongs to the strong cohesive property clay, and is very strong in conjunction with the ability of poor material, its plasticity-is fabulous, plasticity index can reach 32 ~ 40, is higher than any clay, rock and coal gangue, stable chemical performance, with other brick-making raw materials good consistency is arranged, can increase substantially the consumption of mud.Mud present utilization ratio in Taihu Lake is very low, and fine particles, plasticity-height, sand content are few, are the available brick-making raw materials; Consider bake bricks calorific value in the process of brickmaking economy and raising, simultaneously the flyash, coal gangue or the slag that provide of an amount of Wuxi of admixture or peripheral heat power plant.
For this reason, the invention provides a kind of environment-friendly type, energy-saving vitrified brick, mud makes sewage sludge harmlessness when the high-temperature roasting as brick-making raw material, and heavy metal is effectively solidified, and prevents secondary pollution, organic substance can be used as the interior fuel of vitrified brick again in the mud, reduced energy consumption, and organism decomposes effusion and stays micropore, light weight after high-temperature roasting, the space is many, has certain heat insulating and sound-proofing properties.
The present invention does not change existing brickmaking technology flow process, but by raw material preferably with the science compatibility, with alum sludge as main brick-making raw material, effectively solve alum sludge and dispose difficult problem, and vitrified brick is functional, no scum or lime blowing, and brick body water-intake rate is between 19% ~ 24%, ultimate compression strength can be done bearing wall and use between 10MPa ~ 20MPa.The present technique reproducibility is better, has great demonstration promotional value and wide market application prospect.
The present invention can be used for the sintering solid brick, or perforated brick, or hollow brick.
Flyash is F class second class powered coal ash as mentioned above, and F class flyash CaO content is low, and is favourable to vitrified brick, and the source is wide, low price, and net effect is good.
Particle diameter≤the 1mm of the particle diameter≤0.5mm of wilkinite mine tailing, coal gangue or slag as mentioned above, raw material granularity is thin more, and its specific surface area is big more, and moisture penetration is good more, and the plasticity of blank is also good more, helps the moulding of base substrate.
Embodiment
Below by embodiment, technical scheme of the present invention is further described in detail.
Embodiment 1
Sludge baked brick, by the following raw materials according components by weight percentage:
The Wuxi alum sludge: 40%, with water ratio 6% dry weight basis
Taihu Lake mud: 30%, with water ratio 6% dry weight basis
Wilkinite mine tailing: 10%
Flyash: 10%
Coal gangue: 10%
In the above-mentioned raw materials, as the alum sludge of raw material be mechanical dehydration or dry after mud; As the Taihu Lake mud of raw material is to dry and be the mud after the removal of impurities.According to the 4th in the claim specification sheets carry out roasting the vitrified brick finished product.The brick volume density is 1.41g/cm
3, actual measurement solid brick ultimate compression strength is 13.3MPa, and water-intake rate is 22%, and visual appearance is good, can make bearing wall and use.
Embodiment 2
Sludge baked brick, by the following raw materials according components by weight percentage:
The Wuxi alum sludge: 30%, with water ratio 6% dry weight basis
Taihu Lake mud: 30%, with water ratio 6% dry weight basis
Wilkinite mine tailing: 15%
Flyash: 10%
Coal gangue: 15%
In the above-mentioned raw materials, as the alum sludge of raw material be mechanical dehydration, mud after drying; As the Taihu Lake mud of raw material is to dry and be the mud after the removal of impurities.According to the 4th in the claim specification sheets carry out roasting the vitrified brick finished product.The brick volume density is 1.45g/cm
3, actual measurement solid brick ultimate compression strength is 15.9MPa, and water-intake rate is 20%, and visual appearance is good, can make bearing wall and use.
Embodiment 3
Sludge baked brick, by the following raw materials according components by weight percentage:
The Wuxi alum sludge: 40%, with water ratio 6% dry weight basis
Taihu Lake mud: 40%, with water ratio 6% dry weight basis
Wilkinite mine tailing: 0%
Flyash: 10%
Coal gangue: 10%
In the above-mentioned raw materials, as the alum sludge of raw material be mechanical dehydration, mud after drying; As the Taihu Lake mud of raw material is to dry and be the mud after the removal of impurities.According to the 4th in the claim specification sheets carry out roasting the vitrified brick finished product.The brick volume density is 1.38g/cm
3, actual measurement solid brick ultimate compression strength is 11.8MPa, and water-intake rate is 25%, and visual appearance is good.
Embodiment 4
Sludge baked brick, by the following raw materials according components by weight percentage:
The Wuxi alum sludge: 30%, with water ratio 6% dry weight basis
Taihu Lake mud: 40%, with water ratio 6% dry weight basis
Wilkinite mine tailing: 0%
Flyash: 5%
Coal gangue: 25%
In the above-mentioned raw materials, as the alum sludge of raw material be mechanical dehydration, mud after drying; As the Taihu Lake mud of raw material is to dry and be the mud after the removal of impurities.According to the 4th in the claim specification sheets carry out roasting the vitrified brick finished product.The brick volume density is 1.32g/cm
3, actual measurement solid brick ultimate compression strength is 12.6MPa, and water-intake rate is 23%, and visual appearance is good, can make bearing wall and use.
It is main brick-making raw material that the present invention adopts present depleted alum sludge, need not clay, not only can carry out effective recycling to the alum sludge of throwing aside, also can solve the mud handling problems in the ecological dredging process of Taihu Lake, avoid the destruction that municipal sludge is piled up or landfill causes the arable land to reach the pollution that environment is brought.Mud utilization ratio height of the present invention, the natural resources consumption is few, and traditional relatively ordinary fired brick is from heavy and light, less energy consumption, the intensity height, and have heat insulation effect and sound insulation property preferably, can produce remarkable economic efficiency and environmental benefit.Should be appreciated that specific embodiment described above only to be used to explain the present invention and and be not used in qualification the present invention.All changes of being done according to the present patent application claim are all the covering scope of patent of the present invention.
Claims (7)
1. one kind high volume alum sludge vitrified brick, it is characterized in that its solidify material and interior fuel choose and content is:
Alum sludge: with water ratio 6% dry weight basis 30% ~ 40%;
Mud: with water ratio 6% dry weight basis 30% ~ 40%;
Wilkinite mine tailing: 0% ~ 15%;
Flyash: 5% ~ 10%;
Coal gangue or slag: 10% ~ 25%;
Each component is weight dry weight percentage meter.
2. high volume alum sludge vitrified brick according to claim 1, it is characterized in that: above-mentioned mud is Taihu Lake mud.
3. high volume alum sludge vitrified brick according to claim 1 is characterized in that: above-mentioned flyash is F class second class powered coal ash.
4. high volume alum sludge vitrified brick according to claim 1 is characterized in that: the particle diameter≤0.5mm of above-mentioned wilkinite mine tailing.
5. high volume alum sludge vitrified brick according to claim 1 is characterized in that: the particle diameter≤1mm of above-mentioned coal gangue or slag.
6. the preparation method of the described high volume alum sludge vitrified brick of claim 1 to 5 is characterized in that may further comprise the steps:
(1), alum sludge, mud, wilkinite mine tailing, flyash, coal gangue or slag sent into box feeding machine mix, be sent to by conveyor then that brute force stirs in the biaxial rneader;
(2), the adobe of different shapes and size will be crushed to after the above-mentioned compound ageing with the two-stage vacuum brick extruding machine;
(3), utilize the roasting kiln waste heat that drying is carried out in adobe, make the adobe water ratio below 10%;
(4), adobe that drying is good in tunnel furnace with 900 ℃ ~ 1000 ℃ high-temperature roastings.
7. according to the preparation method of the described alum sludge vitrified brick of claim 6, it is characterized in that: this method is used for the sintering solid brick, or perforated brick, or hollow brick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101361037A CN102260067A (en) | 2011-05-25 | 2011-05-25 | Sintered brick with high content of tap water plant sludge and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101361037A CN102260067A (en) | 2011-05-25 | 2011-05-25 | Sintered brick with high content of tap water plant sludge and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN102260067A true CN102260067A (en) | 2011-11-30 |
Family
ID=45006939
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101361037A Pending CN102260067A (en) | 2011-05-25 | 2011-05-25 | Sintered brick with high content of tap water plant sludge and preparation method thereof |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102584171A (en) * | 2012-03-12 | 2012-07-18 | 宜兴市浦发陶瓷厂 | Decorative material and preparation method thereof |
| CN102775101A (en) * | 2012-08-03 | 2012-11-14 | 黄靖宇 | Baking-free brick made of aluminum sludge of water works |
| CN103145383A (en) * | 2013-04-02 | 2013-06-12 | 连云港港口工程设计研究院有限公司 | Building material utilizing seabed sludge and preparation method of building material |
| CN103193504A (en) * | 2013-03-10 | 2013-07-10 | 海拉建材科技大丰有限公司 | Processing technology of water treatment sludge self-insulation brick |
| CN103304214A (en) * | 2013-06-26 | 2013-09-18 | 上海鑫晶山建材开发有限公司 | Sewage treatment plant sludge sintered brick and preparation method thereof |
| CN104387104A (en) * | 2014-10-20 | 2015-03-04 | 中建三局第二建设工程有限责任公司 | Method for preparing novel energy-saving sintering wall material by utilizing lake silt |
| CN106224978A (en) * | 2016-07-08 | 2016-12-14 | 重庆文渠环保科技有限公司 | Utilize the method and device of chamber type sintering all kinds of mud of technology harmlessness disposing |
| CN106747314A (en) * | 2017-01-16 | 2017-05-31 | 上海同济普兰德生物质能股份有限公司 | A kind of sludge and silt sintering brick and preparation method thereof |
| CN106810289A (en) * | 2017-02-21 | 2017-06-09 | 重庆市永川区新窝建材有限公司 | High compressive strength sintered perforated brick and preparation method thereof |
| CN109437841A (en) * | 2018-11-26 | 2019-03-08 | 徐州振丰新型墙体材料有限公司 | A kind of high-compactness sludge brick and preparation method thereof |
| CN111187074A (en) * | 2020-02-28 | 2020-05-22 | 安徽三链生态环保有限公司 | Ecological brick and preparation method thereof |
| CN112321222A (en) * | 2020-10-12 | 2021-02-05 | 绍兴文理学院 | Ultrahigh-performance concrete prepared from tap water plant sludge powder |
| CN113061018A (en) * | 2021-03-20 | 2021-07-02 | 北票天宝耐火材料有限公司 | Method for manufacturing landscape brick and archaized brick high-grade building material by using coal gangue |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1724446A (en) * | 2005-06-22 | 2006-01-25 | 苏州赛可利新型材料有限公司 | Material for wall, and method for processing wall brick by said material |
-
2011
- 2011-05-25 CN CN2011101361037A patent/CN102260067A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1724446A (en) * | 2005-06-22 | 2006-01-25 | 苏州赛可利新型材料有限公司 | Material for wall, and method for processing wall brick by said material |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102584171A (en) * | 2012-03-12 | 2012-07-18 | 宜兴市浦发陶瓷厂 | Decorative material and preparation method thereof |
| CN102775101A (en) * | 2012-08-03 | 2012-11-14 | 黄靖宇 | Baking-free brick made of aluminum sludge of water works |
| CN102775101B (en) * | 2012-08-03 | 2014-10-29 | 江苏淞瀚新能源有限公司 | Baking-free brick made of aluminum sludge of water works |
| CN103193504A (en) * | 2013-03-10 | 2013-07-10 | 海拉建材科技大丰有限公司 | Processing technology of water treatment sludge self-insulation brick |
| CN103145383A (en) * | 2013-04-02 | 2013-06-12 | 连云港港口工程设计研究院有限公司 | Building material utilizing seabed sludge and preparation method of building material |
| CN103304214B (en) * | 2013-06-26 | 2015-05-27 | 上海鑫晶山建材开发有限公司 | Sewage treatment plant sludge sintered brick and preparation method thereof |
| CN103304214A (en) * | 2013-06-26 | 2013-09-18 | 上海鑫晶山建材开发有限公司 | Sewage treatment plant sludge sintered brick and preparation method thereof |
| CN104387104B (en) * | 2014-10-20 | 2016-04-13 | 中建三局第二建设工程有限责任公司 | A kind of method utilizing lake silt to prepare energy-saving sintering materials for wall |
| CN104387104A (en) * | 2014-10-20 | 2015-03-04 | 中建三局第二建设工程有限责任公司 | Method for preparing novel energy-saving sintering wall material by utilizing lake silt |
| CN106224978A (en) * | 2016-07-08 | 2016-12-14 | 重庆文渠环保科技有限公司 | Utilize the method and device of chamber type sintering all kinds of mud of technology harmlessness disposing |
| CN106747314A (en) * | 2017-01-16 | 2017-05-31 | 上海同济普兰德生物质能股份有限公司 | A kind of sludge and silt sintering brick and preparation method thereof |
| CN106810289A (en) * | 2017-02-21 | 2017-06-09 | 重庆市永川区新窝建材有限公司 | High compressive strength sintered perforated brick and preparation method thereof |
| CN109437841A (en) * | 2018-11-26 | 2019-03-08 | 徐州振丰新型墙体材料有限公司 | A kind of high-compactness sludge brick and preparation method thereof |
| CN111187074A (en) * | 2020-02-28 | 2020-05-22 | 安徽三链生态环保有限公司 | Ecological brick and preparation method thereof |
| CN112321222A (en) * | 2020-10-12 | 2021-02-05 | 绍兴文理学院 | Ultrahigh-performance concrete prepared from tap water plant sludge powder |
| CN113061018A (en) * | 2021-03-20 | 2021-07-02 | 北票天宝耐火材料有限公司 | Method for manufacturing landscape brick and archaized brick high-grade building material by using coal gangue |
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Application publication date: 20111130 |