CN101922201A - Coal ash heat-preserving sintered brick/building block and production technology thereof - Google Patents
Coal ash heat-preserving sintered brick/building block and production technology thereof Download PDFInfo
- Publication number
- CN101922201A CN101922201A CN2009101079630A CN200910107963A CN101922201A CN 101922201 A CN101922201 A CN 101922201A CN 2009101079630 A CN2009101079630 A CN 2009101079630A CN 200910107963 A CN200910107963 A CN 200910107963A CN 101922201 A CN101922201 A CN 101922201A
- Authority
- CN
- China
- Prior art keywords
- building block
- brick
- coal ash
- curing
- ash heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Processing Of Solid Wastes (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention discloses a coal ash heat-preserving sintered brick/building block and a production technology thereof, belonging to the fields of building wall materials and production technologies. Aiming at the difficulty that the coal ash heat-preserving sintered brick/building block is difficult to obtain high green strength and difficult to be sintered so as to influence production, the invention provides the coal ash heat-preserving sintered brick/building block which is prepared from the following raw materials in percentage by weight: 30-99 percent of coal ash, 1-30 percent of curing exciting agent, 0-30 percent of light aggregate and 0-69 percent of other solid raw materials. The invention also provides a production technology of the coal ash heat-preserving sintered brick/building block, which comprises the following steps of: uniformly stirring the coal ash with the curing exciting agent, the light aggregate and other solid raw materials; adding water into the obtained mixture, and uniformly stirring to form a blank material; molding the blank material; curing the molded brick/building block blank; and sintering the cured brick/building block blank at 800-1100 DEG C. The production technology is applicable to the volume production of load-bearing and non load bearing bricks/building blocks.
Description
Technical field
The present invention relates to a kind of coal ash heat-preserving sintered brick/building block and production technology thereof.
Background technology
Flyash is after the coal dust process of steam power station is burnt, and has the attritive powder of pozzolanic activity, is one of the most large industrial solid wastes.The accumulating amount of flyash is big, occupation of land is wide, contaminated environment.Be stored in the survivable decay of hazardous substances in the flyash, its harm has chronicity and potentiality.Chemical composition of PCA and content be broadly divided into low calcium and high-calcium fly ass two big classes, but some flyash contain constituent elements such as high-sulfur, high-carbon, high ferro because of the place of production, combustion system and the burning degree etc. of coal are different and different.Particle size, the form of fly ash grain have nothing in common with each other, and can be divided into pearl particle and scoriform particle by shape.According to the difference of ash discharge technology, flyash is divided into dry ash and wet ash discharge again.The difference of flyash physicochemical properties makes the difficulty of utilizing flyash strengthen.On the other hand, advantage such as that coal ash sintering brick/building block has is in light weight, intensity is high, excellent in te pins of durability, thermal conductivity are low is good insulating wall material.
One of difficulty that is raw material production sintered brick/building block with flyash is that flyash is poor material, is difficult to moulding.Utilize in the technology of flyash as sintered brick/building block existing, majority adds one of clay raw materials or organic binder, makes it and the flyash bonding, so that moulding.As mixing swell soil among application for a patent for invention CN1398813 and the CN1398814, add yellow sand among the application for a patent for invention CN1145339, application for a patent for invention CN1167671 and CN1087331 add clay, application for a patent for invention CN1246460 adds gangue, add municipal sludge among the application for a patent for invention CN101148071, add shale among the application for a patent for invention CN101328033, application for a patent for invention CN1400189, add organic bond or organic active agent etc. among CN1765809 and the CN1837128.Though application for a patent for invention CN1760155 proposes not add the method for one of clay raw materials, need part flyash is levigate to 200 orders, and need big briquetting pressure.Application for a patent for invention CN1075310 proposes to carry out moulding with " viscosity " and " inviscid " two kinds of flyash mixing, but " viscosity " of flyash and " inviscid " there is no generally acknowledged definition, are difficult to define.Patent application is drawn by above-mentioned institute is not all had the green strength data, is difficult to judge whether the green compact according to these technology manufacturings have sufficient intensity not to be damaged in follow-up carrying or piling operation, thereby is difficult to judge that can these technology be applied to industrial production in batches.
Summary of the invention
The object of the present invention is to provide a kind of coal ash heat-preserving sintered brick/building block and production technology.Coal ash heat-preserving sintered brick/building block is made by following raw materials by weight percent sintering: flyash 30-99, curing exciting agent 1-30, light aggregate 0-30, other solid materials 0-69.
Described curing exciting agent comprise oxide, the potassium of the oxide of sodium, the hydroxide of sodium, the salt that contains sodium, potassium hydroxide, contain one or more solids or the aqueous solution in the salt of potassium; Described light aggregate comprises one or more in glass bead, expansionization perlite, expanded vermiculite, float stone, haydite, granular polystyrene, husk, wood chip, the coal dust; Described other solid materials comprise: one or more in metallurgical slag, slag, gangue, red mud, mud, mud, clay, shale, building waste, carbide slag, calcium oxide, the calcium hydroxide.
The production technology of coal ash heat-preserving sintered brick/building block comprises the steps: that (1) stirs flyash and curing exciting agent, light aggregate and other solid materials, perhaps is stirred into compound with flyash and curing exciting agent, light aggregate and other solid materials; (2) compound that obtains is added entry stir obtain blank maybe with the compound that obtains directly as blank.The weight of final water accounts for the 5-30% of solid material weight in the described compound; (3) blank that obtains is molded into brick/building block; (4) brick after the moulding/building block base heating cure or at room temperature curing; (5) brick/building block base after the curing is sintered, and the temperature of sintering is 800-1100 ℃.
The adding of curing exciting agent makes active component formation gelling phase in the flyash among the present invention, makes brick/building block base that good green strength is arranged behind the gelling solidifying.Carbon component residual in the flyash can leave pore behind sintering, these pores will be blocked the formation of heat bridge, thereby brick/building block has good thermal and insulating performance after making sintering, and material proportion is reduced.In order further to improve the heat-insulating property of material, can add light aggregate.Light aggregate can make the material porosity increase, thereby strengthens the thermal and insulating performance of brick/building block, and brick/building block proportion is descended.The purpose that adds other solid materials among the present invention comprise following one or more: effectively utilize solid slag, increase brick/building block final strength, increase brick/building block final density, increase curing exciting agent effect, lower sintering energy consumption etc.The present invention also can not add any other solid material.
Coal ash heat-preserving sintered brick/building block of the present invention is suitable for making load-bearing and non-bearing wall body.
The specific embodiment
The invention provides a kind of coal ash heat-preserving sintered brick/building block and production technology.Coal ash heat-preserving sintered brick/building block is made up of percentage by weight 30-99 flyash, 1-30 curing exciting agent, 0-30 light aggregate, other solid materials of 0-69.Wherein curing exciting agent comprise oxide, the potassium of the oxide of sodium, the hydroxide of sodium, the salt that contains sodium, potassium hydroxide, contain one or more solids or the aqueous solution in the salt of potassium; Light aggregate comprises one or more in glass bead, expansionization perlite, expanded vermiculite, float stone, haydite, granular polystyrene, husk, wood chip, the coal dust; Other solid materials comprise: one or more in metallurgical slag, slag, gangue, red mud, mud, mud, clay, shale, building waste, carbide slag, calcium oxide, the calcium hydroxide.According to raw material of the present invention and production technology, the inventor has done following enforcement.
Embodiment one: get weight ratio and be 90% flyash, 2% solid sodium hydroxide and 8% sodium silicate water glass (modulus is 2.3), produce by following technology:
1, solid sodium hydroxide dissolves in the water, adds sodium silicate solution.The gross weight of water, sodium silicate solution and NaOH is 15% of a flyash amount;
2, the aqueous solution and the flyash of preparation are stirred into blank in the step 1;
3, the blank that step 2 is obtained is pressed into brick/building block base;
4, with brick/building block green compact in 120 ℃ of curing;
5, the briquet after the curing is gone into the klining knot.Sintering temperature is 1000 ℃;
6, product kiln discharge, check.
Solidifying back green compact compressive strength is 16.1MPa.
Properties of product behind the sintering: compressive strength 31.6MPa; Thermal conductivity 0.46W/m.K.
From the performance of product as can be seen compressive strength height behind the green strength height, sintering of heat-preserving sintered brick of the present invention, thermal conductivity is low, thermal and insulating performance good.
Other embodiment sees the following form.The production craft step of these embodiment is identical (if the solid curing exciting agent is arranged in the component of these embodiments, with its first wiring solution-forming with embodiment one; When waste residue is coarse granule, pulverize earlier), but component is different with technological parameter.
Claims (6)
1. a coal ash heat-preserving sintered brick/building block is made by following raw materials by weight percent sintering: flyash 30-99, curing exciting agent 1-30, light aggregate 0-30, other solid materials 0-69.
2. coal ash heat-preserving sintered brick/building block according to claim 1, it is characterized in that described curing exciting agent comprise oxide, the potassium of the oxide of sodium, the hydroxide of sodium, the salt that contains sodium, potassium hydroxide, contain one or more solids or the aqueous solution in the salt of potassium.
3. coal ash heat-preserving sintered brick/building block according to claim 1 is characterized in that described light aggregate comprises one or more in glass bead, expansionization perlite, expanded vermiculite, float stone, haydite, granular polystyrene, husk, wood chip, the coal dust.
4. coal ash heat-preserving sintered brick/building block according to claim 1 is characterized in that described other solid materials comprise: one or more in metallurgical slag, slag, gangue, red mud, mud, mud, clay, shale, building waste, carbide slag, calcium oxide, the calcium hydroxide.
5. a production technology that is used to make the described coal ash heat-preserving sintered brick/building block of claim 1 comprises the steps:
(1) flyash and curing exciting agent, light aggregate and other solid materials are stirred, perhaps flyash and curing exciting agent, light aggregate and other solid materials are stirred into compound;
(2) compound that step (1) is obtained adds entry and stirs the compound that obtains blank or step (1) is obtained directly as blank.The weight of final water accounts for the 5-30% of solid material weight in the described compound;
(3) blank that step (2) is obtained is molded into brick/building block;
(4) brick after the moulding/building block base heating cure or at room temperature curing;
(5) dried brick/building block base is sintered.
6. production technology according to claim 5 is characterized in that the temperature of sintering in the step (5) is 800-1100 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101079630A CN101922201A (en) | 2009-06-17 | 2009-06-17 | Coal ash heat-preserving sintered brick/building block and production technology thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101079630A CN101922201A (en) | 2009-06-17 | 2009-06-17 | Coal ash heat-preserving sintered brick/building block and production technology thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101922201A true CN101922201A (en) | 2010-12-22 |
Family
ID=43337387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101079630A Pending CN101922201A (en) | 2009-06-17 | 2009-06-17 | Coal ash heat-preserving sintered brick/building block and production technology thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101922201A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102219463A (en) * | 2011-04-08 | 2011-10-19 | 东南大学 | Non-burnt straw and sludge composite self-insulation material and preparation method thereof |
| CN102815919A (en) * | 2012-06-06 | 2012-12-12 | 湖南华天能环保科技开发有限公司 | Technology for producing laying bricks through utilizing coal ahs and shale |
| CN103964812A (en) * | 2014-05-04 | 2014-08-06 | 临沧师范高等专科学校 | Sintered brick adopting germanium-extracted lignite tailings as main material and preparation method of sintered brick |
| CN104961401A (en) * | 2014-09-29 | 2015-10-07 | 济南天硕新型墙材有限公司 | Self-thermal-insulation building block |
| CN106587931A (en) * | 2016-12-16 | 2017-04-26 | 东莞深圳清华大学研究院创新中心 | Light high-strength ceramsite and preparation method thereof |
| CN106938916A (en) * | 2017-04-06 | 2017-07-11 | 合肥欧克斯新型建材有限公司 | A kind of mould proof brick and preparation method thereof |
| CN108147778A (en) * | 2018-01-10 | 2018-06-12 | 和县明生环保材料有限责任公司 | A kind of light high-strength heat preservation hollow brick and its preparation |
| CN108358597A (en) * | 2018-02-01 | 2018-08-03 | 长兴科创科技咨询有限公司 | It is a kind of using blast furnace flyash as the light block of raw material |
| CN108558365A (en) * | 2018-07-18 | 2018-09-21 | 合肥梵腾环保科技有限公司 | A kind of preparation method of cracking resistance insulating brick |
| CN108706962A (en) * | 2018-07-31 | 2018-10-26 | 中南大学 | A kind of high-strength ceramic brick and preparation method thereof of coal gangue-fly ash-desulfurated plaster system |
| CN108929106A (en) * | 2018-08-31 | 2018-12-04 | 陈毅忠 | A kind of compound heat-insulation Ceramic Tiles |
| CN109665816A (en) * | 2019-02-20 | 2019-04-23 | 梅州市梅县区金蔡建材厂 | A kind of sintering heat-reserving brick and preparation method thereof |
-
2009
- 2009-06-17 CN CN2009101079630A patent/CN101922201A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102219463A (en) * | 2011-04-08 | 2011-10-19 | 东南大学 | Non-burnt straw and sludge composite self-insulation material and preparation method thereof |
| CN102815919A (en) * | 2012-06-06 | 2012-12-12 | 湖南华天能环保科技开发有限公司 | Technology for producing laying bricks through utilizing coal ahs and shale |
| CN103964812A (en) * | 2014-05-04 | 2014-08-06 | 临沧师范高等专科学校 | Sintered brick adopting germanium-extracted lignite tailings as main material and preparation method of sintered brick |
| CN103964812B (en) * | 2014-05-04 | 2015-10-21 | 临沧师范高等专科学校 | Vitrified brick being main raw material with brown coal germanium tailings and preparation method thereof |
| CN104961401A (en) * | 2014-09-29 | 2015-10-07 | 济南天硕新型墙材有限公司 | Self-thermal-insulation building block |
| CN105060781A (en) * | 2014-09-29 | 2015-11-18 | 济南天硕新型墙材有限公司 | Self-thermal insulation concrete block |
| CN106587931B (en) * | 2016-12-16 | 2018-08-24 | 广东清大同科环保技术有限公司 | A kind of light high-strength haydite and preparation method thereof |
| CN106587931A (en) * | 2016-12-16 | 2017-04-26 | 东莞深圳清华大学研究院创新中心 | Light high-strength ceramsite and preparation method thereof |
| CN106938916A (en) * | 2017-04-06 | 2017-07-11 | 合肥欧克斯新型建材有限公司 | A kind of mould proof brick and preparation method thereof |
| CN108147778A (en) * | 2018-01-10 | 2018-06-12 | 和县明生环保材料有限责任公司 | A kind of light high-strength heat preservation hollow brick and its preparation |
| CN108358597A (en) * | 2018-02-01 | 2018-08-03 | 长兴科创科技咨询有限公司 | It is a kind of using blast furnace flyash as the light block of raw material |
| CN108558365A (en) * | 2018-07-18 | 2018-09-21 | 合肥梵腾环保科技有限公司 | A kind of preparation method of cracking resistance insulating brick |
| CN108706962A (en) * | 2018-07-31 | 2018-10-26 | 中南大学 | A kind of high-strength ceramic brick and preparation method thereof of coal gangue-fly ash-desulfurated plaster system |
| CN108706962B (en) * | 2018-07-31 | 2021-02-05 | 中南大学 | High-strength ceramic tile of coal gangue-fly ash-desulfurized gypsum system and preparation method thereof |
| CN108929106A (en) * | 2018-08-31 | 2018-12-04 | 陈毅忠 | A kind of compound heat-insulation Ceramic Tiles |
| CN109665816A (en) * | 2019-02-20 | 2019-04-23 | 梅州市梅县区金蔡建材厂 | A kind of sintering heat-reserving brick and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101922201A (en) | Coal ash heat-preserving sintered brick/building block and production technology thereof | |
| CN101905961A (en) | Fly ash thermal-insulation sintered material and production technique thereof | |
| CN106746816B (en) | A kind of ultralight high-strength fly-ash light-weight aggregate | |
| CN101081732A (en) | Stone powder sludge sintering brick and method for making the same | |
| CN104030657B (en) | A kind of excess sludge that utilizes prepares the method with catalysis haydite | |
| CA2637101A1 (en) | Pyroprocessed aggregates comprising iba and low calcium silicoaluminous materials and methods for producing such aggregates | |
| KR20130009000A (en) | Coal gangue ceramsite and its preparation approach | |
| CN101353250A (en) | Shale composite sintering brick and preparing technique thereof | |
| CN103172347A (en) | Sintered porous light-weight insulating brick produced from ceramic waste mud and manufacturing method thereof | |
| CN102417368A (en) | Foam ceramic manufactured by high-silicon iron tailings and manufacture method thereof | |
| CN101585714A (en) | A kind of method of utilizing biological sludge and mud to make haydite fully | |
| CN105315007A (en) | Method for preparing light porous material by coal gangue | |
| JP5435255B2 (en) | Geopolymer solidified product using sewage sludge molten slag as active filler and method for producing the same | |
| JP3188200B2 (en) | Manufacturing method of artificial lightweight aggregate | |
| Ahmari et al. | The properties and durability of alkali-activated masonry units | |
| CN106242639B (en) | Gush bed mud carbonization haydite and its preparation technology in river lake | |
| CN103319192B (en) | Ceramsites prepared from coal gangue and coal slime, and preparation method for ceramsites | |
| CN101747016B (en) | Sintering-free flyash brick | |
| CN106630878B (en) | Utilize the high temperature resistant materials for wall and preparation method thereof of cullet particle manufacture | |
| KR101066193B1 (en) | Carbonized lightweight aggregate be made from organic sludge | |
| CN102329111A (en) | Lightweight brick manufactured by utilizing printing and dyeing sludge and manufacturing method thereof | |
| AU2019389856B2 (en) | A novel method of producing synthetic lightweight ceramic sand and uses thereof | |
| KR20110116468A (en) | Permeable-ceramic brick using waste batteries' powder and method thereof | |
| CN112174602A (en) | Mixture for concrete road base | |
| Namkane et al. | Utilization of leonardite and coal bottom ash for production of ceramic floor tiles |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| DD01 | Delivery of document by public notice |
Addressee: Weng Lvqian Document name: Notification of before Expiration of Request of Examination as to Substance |
|
| DD01 | Delivery of document by public notice |
Addressee: Weng Lvqian Document name: Notification that Application Deemed to be Withdrawn |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20101222 |