CN102001862A - Method for producing permeable bricks by using dredged mud - Google Patents
Method for producing permeable bricks by using dredged mud Download PDFInfo
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- CN102001862A CN102001862A CN 201010299609 CN201010299609A CN102001862A CN 102001862 A CN102001862 A CN 102001862A CN 201010299609 CN201010299609 CN 201010299609 CN 201010299609 A CN201010299609 A CN 201010299609A CN 102001862 A CN102001862 A CN 102001862A
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Abstract
The invention discloses a method for producing permeable bricks by using dredged mud, comprising the following steps of: (1) weighing raw materials according to the formula, adding a proper amount of water, controlling the water content to be 35-45% and stirring for mixing evenly; (2) dehydrating, drying and grinding slurry, sieving through a 30-mesh sieve, pressing the sieved powder into samples as required and setting the forming pressure to be 10-20MPa; (3) drying the formed samples at 80-110 DEG C and controlling the water content to be below 5%; and (4) sintering the dried samples through the highest temperature of 950-1100 DEG C and the preservation of the high temperature for 0.5-1.5h and naturally cooling to form the sintered products. The invention provides a method for recycling the dredged mud, which has simple technical process and ensures that the produced permeable bricks have even colour and high intensity and has the water permeability and water retention performance both reaching and exceeding the industrial standard.
Description
Technical field
The present invention relates to a kind of preparation method of ceramic water-permeable brick, relate in particular to a kind of clay method that is equipped with permeable brick of the training of channel of utilizing.
Background technology
Along with the fast development of coastal economy, each big harbour, navigation channel and seashore construction and maintenance engineering drop in a large number, and the quantity of dredging mud increases thereupon.It is reported that only the annual dredging mud that produces in Delta of the Pearl River area just reaches 8,000 ten thousand m
3About, the East Sea, area, the North Sea also produce the dredging mud of a great deal of.At present, the processing mode of dredging mud routine mainly contains stacking, hydraulic reclamation and ocean and throws methods such as mud, but there are various problems in these treatment processs.Do not take other measure of control as simple stacking, can take a large amount of soils on the one hand, can produce secondary pollution again owing to rainwash on the other hand, and wherein beneficiating ingredient can not be fully used, cause the waste of resource.The greatest problem that hydraulic reclamation is handled is exactly the hydraulic reclamation problems of land utilization, and hydraulic fill foundation is generally very weak, needs the ground processing costs of both expensive when later development uses.In addition, dredge fill muddy water often occurs to the outside diffusion in cofferdam, causes secondary pollution.The ocean is thrown mud and can directly be caused the fishing ground to destroy, and ocean environment is produced great potential impact, and a lot of countries have made laws and forbidden.
Dredging mud is a kind of potential resources that the value utilized is arranged very much.In order to make full use of this resource, reduce environmental hazard, many in the world countries are all greatly developing the various technology that dredging mud is handled and utilized.Dredging mud resource technology can not only reach the purpose of sludge reduction, innoxious, stabilization, also can turn waste into wealth simultaneously, obtains economic benefit, has the not available advantage of other method.At present, dredging mud has certain application at building material industry, mainly is to be main raw material with dredging mud, preparation haydite, ceramic tile and cement clinker etc., but also do not form scale operation, therefore dredge mud and be not utilized effectively.And the dredging bed mud amount that every dredging engineering of China produces constantly increases, and how effectively to promote the comprehensive utilization of dredging mud, has become a problem demanding prompt solution.By the analysis of dredging mud being found dredging mud is mainly based on clay, sial content is higher, contains a large amount of organic compositions simultaneously, therefore can utilize its preparation ceramic water-permeable brick.And up to the present, yet there are no the report that dredging mud is applied to ceramic water-permeable brick.
Summary of the invention
The object of the present invention is to provide a kind of clay method that is equipped with ceramic water-permeable brick of the training of channel of utilizing, described permeable brick is a main raw material with dredging mud, add certain amount of industrial cinder, glass powder and other pore-forming material simultaneously, comprehensive utilization pore-forming material, cinder and a large amount of organism of dredging mud self are prepared intensity height, water permeability permeable brick good, with low cost.
The technical solution adopted in the present invention is as follows:
The prescription of raw material is by percentage to the quality: dredging mud 40～70%, industrial cinder 20～40%, glass powder 5～10%, pore-forming material 5～15%, described pore-forming material is wood chip, lime carbonate, rice straw etc.
Its preparation process may further comprise the steps:
(1) solidified being dredged mud, industrial cinder and cullet fragmentation sieves;
(2) take by weighing raw material according to prescription, add an amount of water, control water ratio 35～45%, brute force mixes;
(3) slurry is dehydrated, and cross 30 mesh sieves, the powder after sieving is pressed into required sample;
(4) sample after the moulding is 80～110 ℃ of dryings, and water ratio is controlled at below 5%;
(5) dried sample burnt till through 950～1100 ℃ of top temperatures, soak in 0.5～1.5 hour, behind the naturally cooling for burning till finished product.
The industrial cinder of described fragmentation is crossed 40～60 mesh sieves.
Described forming pressure is 10～20MPa.
Adopt glass powder can reduce the goods firing temperature.
The present invention compared with prior art has following advantage:
1, the clay-type substance content in the used dredging mud of the present invention is more, and a certain amount of organic humic acid class material is arranged, and plasticity-is good, helps moulding; Organism not only can be made pore-forming material in the dredging mud, the heat that organism self burning simultaneously produces can replenish the heat of high temperature burnt product, both utilized the heat of dredging mud self, again can pyrolytic decomposition harmful poisonous and carcinogenic substance, effectively solved the secondary pollution problem of dredging mud.
2, technological process of the present invention is simple, and used dredging mud and industrial cinder all contain a large amount of burnings and lose composition, and in conjunction with other dissimilar pore-forming materials, makes the hole of goods regulate flexible and changeable; Utilize glass powder to reduce firing temperature simultaneously, the permeable brick of preparation, every performance index such as color even, intensity height, water-permeable and water retention property meet or exceed national building material industry standard JC/T 945-2005, lay this permeable brick 1 year in the test section and roll through automobile etc. that cracking weares and teares by not occurring obviously.
3, the present invention fully utilizes waste materials such as dredging mud, industrial cinder and glass powder, turn waste into wealth, and the utilization ratio height, reach more than 85%, when effectively utilizing waste resource, can obtain the better economic social benefit.
Embodiment
Embodiment 1
Raw material is formed: dredging mud 40%, industrial cinder 40%, wood chip 10%, glass powder 10%.Take by weighing raw material according to prescription, add an amount of water, control water ratio 45% mixes; Slurry is dehydrated, and cross 30 mesh sieves, the powder after sieving is pressed into required sample, forming pressure 15MPa; Sample after the moulding is 80 ℃ of dryings, and be 6 hours time of drying, and water ratio is controlled at below 5%; Dried sample is through 1100 ℃ of top temperatures and be incubated 1.5 hours and burn till, behind the naturally cooling for burning till finished product.The goods color even, ultimate compression strength is about 41MPa, and water retention property is 0.71g/cm
2, coefficient of permeability is 1.9 * 10
-2Cm/s reaches national building material industry standard JC/T 945-2005, lays this permeable brick 1 year in the test section and rolls through automobile etc. that cracking weares and teares by not occurring obviously.
Embodiment 2
Raw material is formed: dredging mud 70%, industrial cinder 20%, lime carbonate 5%, glass powder 5%.Take by weighing raw material according to prescription, add an amount of water, control water ratio 35% mixes; Slurry is dehydrated, and cross 30 mesh sieves, the powder after sieving is pressed into required sample, forming pressure 10MPa; Sample after the moulding is 110 ℃ of dryings, and be 6 hours time of drying, and water ratio is controlled at below 5%; Dried sample is through 950 ℃ of top temperatures and be incubated 0.5 hour and burn till, behind the naturally cooling for burning till finished product.The goods color even, ultimate compression strength is about 46MPa, and water-retention value is 0.61g/cm
2, coefficient of permeability is 1.1 * 10
-2Cm/s reaches national building material industry standard JC/T 945-2005, lays this permeable brick 1 year in the test section and rolls through automobile etc. that cracking weares and teares by not occurring obviously.
Embodiment 3
Raw material is formed: dredging mud 53%, industrial cinder 25%, rice bar 15%, glass powder 7%.Take by weighing raw material according to prescription, add an amount of water, control water ratio 35% mixes; Slurry is dehydrated, and cross 30 mesh sieves, the powder after sieving is pressed into required sample, forming pressure 20MPa; Sample after the moulding is 100 ℃ of dryings, and be 6 hours time of drying, and water ratio is controlled at below 5%; Dried sample is through 1050 ℃ of top temperatures and be incubated 1 hour and burn till, behind the naturally cooling for burning till finished product.The goods color even, ultimate compression strength is about 36MPa, and water-retention value is 0.65g/cm
2, coefficient of permeability is 1.4 * 10
-2Cm/s reaches national building material industry standard JC/T 945-2005, lays this permeable brick 1 year in the test section and rolls through automobile etc. that cracking weares and teares by not occurring obviously.
Claims (3)
1. one kind is utilized the clay method that is equipped with ceramic water-permeable brick of dredging, it is characterized in that may further comprise the steps
(1) solidified being dredged mud, industrial cinder and cullet fragmentation sieves;
(2) take by weighing raw material according to prescription, add an amount of water, control water ratio 35～45% mixes;
(3) slurry is dehydrated, and cross 30 mesh sieves, the powder after sieving is pressed into required sample;
(4) sample after the moulding is 80～110 ℃ of dryings, and water ratio is controlled at below 5%;
(5) dried sample burnt till through 950～1100 ℃ of top temperatures, soak in 0.5～1.5 hour, behind the naturally cooling for burning till finished product;
Raw material is formed with each ingredients constitute per-cent: dredging mud 40%～70%, industrial cinder 20%～40%, glass powder 5%～10%, pore-forming material 5～15%, described pore-forming material is wood chip, lime carbonate or rice straw.
2. method according to claim 1 is characterized in that: industrial cinder of described fragmentation and glass powder are crossed 40～60 mesh sieves.
3. method according to claim 1 and 2 is characterized in that: described forming pressure is: 10～20MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201010299609 CN102001862A (en) | 2010-09-30 | 2010-09-30 | Method for producing permeable bricks by using dredged mud |
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| CN 201010299609 CN102001862A (en) | 2010-09-30 | 2010-09-30 | Method for producing permeable bricks by using dredged mud |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104710189A (en) * | 2015-03-11 | 2015-06-17 | 福建省建筑科学研究院 | Micropore forming agent for porous gangue brick and micropore forming method of porous gangue brick |
| CN105152678A (en) * | 2015-07-10 | 2015-12-16 | 武汉理工大学 | Production method of ecologic permeable ceramic bricks |
| CN106938938A (en) * | 2017-03-31 | 2017-07-11 | 景德镇陶瓷大学 | A kind of preparation method using powder as the ceramic water-permeable brick of raw material and its obtained product |
| CN107226678A (en) * | 2017-05-27 | 2017-10-03 | 华南理工大学 | A kind of ecological garden environmental protection brick prepared using full waste material and its method |
| CN107903079A (en) * | 2017-11-27 | 2018-04-13 | 山西大学 | The coal-fired clinker water-permeable brick of one kind sintering and its production method |
| CN108083842A (en) * | 2018-01-30 | 2018-05-29 | 淄博天之润生态科技有限公司 | Environment protection type water permeable brick and preparation method thereof |
| CN108373296A (en) * | 2018-01-30 | 2018-08-07 | 广州市环境保护工程设计院有限公司 | A method of preparing novel water permeable brick using creek bed mud |
| CN109020488A (en) * | 2018-07-25 | 2018-12-18 | 清远市简陶瓷有限公司 | A kind of environment friendly pervious brick and preparation method thereof |
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| CN101182186A (en) * | 2007-11-01 | 2008-05-21 | 高跃绪 | Coal ash ceramicite |
| CN101289310A (en) * | 2008-03-24 | 2008-10-22 | 昆明理工大学 | Low-temperature ceramic permeable bricks and production method thereof |
| CN101328044A (en) * | 2008-07-18 | 2008-12-24 | 武汉理工大学 | Preparation of enviroment protective ceramic water permeable brick |
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2010
- 2010-09-30 CN CN 201010299609 patent/CN102001862A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101182186A (en) * | 2007-11-01 | 2008-05-21 | 高跃绪 | Coal ash ceramicite |
| CN101289310A (en) * | 2008-03-24 | 2008-10-22 | 昆明理工大学 | Low-temperature ceramic permeable bricks and production method thereof |
| CN101328044A (en) * | 2008-07-18 | 2008-12-24 | 武汉理工大学 | Preparation of enviroment protective ceramic water permeable brick |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104710189A (en) * | 2015-03-11 | 2015-06-17 | 福建省建筑科学研究院 | Micropore forming agent for porous gangue brick and micropore forming method of porous gangue brick |
| CN105152678A (en) * | 2015-07-10 | 2015-12-16 | 武汉理工大学 | Production method of ecologic permeable ceramic bricks |
| CN105152678B (en) * | 2015-07-10 | 2017-10-27 | 武汉理工大学 | A kind of preparation method of ecological ceramic water-permeable brick |
| CN106938938A (en) * | 2017-03-31 | 2017-07-11 | 景德镇陶瓷大学 | A kind of preparation method using powder as the ceramic water-permeable brick of raw material and its obtained product |
| CN106938938B (en) * | 2017-03-31 | 2019-09-24 | 景德镇陶瓷大学 | It is a kind of using powder as the preparation method of the ceramic water-permeable brick of raw material and its product obtained |
| CN107226678A (en) * | 2017-05-27 | 2017-10-03 | 华南理工大学 | A kind of ecological garden environmental protection brick prepared using full waste material and its method |
| CN107903079A (en) * | 2017-11-27 | 2018-04-13 | 山西大学 | The coal-fired clinker water-permeable brick of one kind sintering and its production method |
| CN108083842A (en) * | 2018-01-30 | 2018-05-29 | 淄博天之润生态科技有限公司 | Environment protection type water permeable brick and preparation method thereof |
| CN108373296A (en) * | 2018-01-30 | 2018-08-07 | 广州市环境保护工程设计院有限公司 | A method of preparing novel water permeable brick using creek bed mud |
| CN108373296B (en) * | 2018-01-30 | 2021-04-16 | 广州市环境保护工程设计院有限公司 | Method for preparing novel water permeable brick by using river bottom mud |
| CN109020488A (en) * | 2018-07-25 | 2018-12-18 | 清远市简陶瓷有限公司 | A kind of environment friendly pervious brick and preparation method thereof |
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Application publication date: 20110406 |