CN102643109A - Method for preparing ceramsite by using waste incineration fly ash and waste glass - Google Patents
Method for preparing ceramsite by using waste incineration fly ash and waste glass Download PDFInfo
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- CN102643109A CN102643109A CN2012101276645A CN201210127664A CN102643109A CN 102643109 A CN102643109 A CN 102643109A CN 2012101276645 A CN2012101276645 A CN 2012101276645A CN 201210127664 A CN201210127664 A CN 201210127664A CN 102643109 A CN102643109 A CN 102643109A
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Abstract
The invention relates to a method for preparing ceramsite by using waste incineration fly ash and waste glass. The method includes the steps that waste glass is broken and ball ground to 200 meshes, and then waste incineration fly ash, rubbish leachate and a foaming agent are added according to certain proportion; and the mixture is stirred evenly, granulated and placed in a furnace to go through a pre-heating stage, a temperature rising stage and a heat preservation anneal stage to obtain the glass ceramsite. The glass ceramsite prepared through the preparation method is good in structural strength, low in water absorbing rate, large in hardness, good in chemical stability and wide in an application range. Simultaneously, dioxin pollutant in raw materials can be decomposed and damaged, heavy metal is cured in firing products, a toxic leaching standard of our country is met, and a purpose of disposing the rubbish leachate and the waste incineration fly ash is achieved simultaneously. The glass ceramsite produced through the method meets requirements of building aggregate, and the method not only turns waste into wealth, but also protects environment.
Description
Technical field
The present invention relates to Hazardous wastes treatment and disposal technical field, be specifically related to a kind of method of utilizing incineration of refuse flyash and cullet to prepare haydite for building.
Background technology
The burning city domestic garbage ash mainly is divided into bottom ash and flying dust according to the difference of its assembling position.Flying dust is meant the resistates of in flue gas purification system and pick up the heat system, collecting and producing.Flying dust comprises that flue gas carries the chemical agent and the product of dust, adding, and its physics and chemical property are different and change to some extent with the type of incineration plant flue gas purification system.
Melting salt content is very high in the flying dust, and the concentration that can leach heavy metal is big (lead, chromium, mercury etc.), and contain micro quantity organic pollutant (Dioxins, furans etc.), so must carry out harmless treatment to it.Simultaneously, flying dust has silicon, aluminum ratio and suitable potassium, na oxide content preferably, can be used as the raw material of making light skeletal and uses.Be the contradiction between the landfill yard capacity of the sustainable growth of alleviating domestic waste output and growing tension, all parts of the country are all at positive construction garbage burning factory.Burning can make waste reduction about 90%; But can produce the incineration residue of some amount in the burning process; Different according to rubbish composition and incineration temperature, time; And the difference of Pollution abatement measure, the amount of residue accounts for about 25% of the preceding total mass of waste incineration, and wherein flying ash accounts for about 4%.Expect 2010, China only flying dust of burning city domestic garbage generation just will reach 520,000 t.The heavy metal such as lead, good fortune that contains higher concentration in the flying ash; And organism such as trace level dioxin; " Hazardous wastes pollution prevention technique policy " (State Environmental Protection Administration; 2001) clearly classify flying ash as Hazardous wastes in, environment is had potential hazardness, must deal carefully with.
China mainly is to solidify landfill to the processing mode of flying dust at present, not only takies a large amount of soils, and exists toxic substance to ooze out, and environment is caused very big pollution.At present, developed countries such as Japan have prohibited and have adopted land-fill method to handle flying dust, but are worth through developing to use in fact, realize the recycling of flying dust.
The glass haydite is to be processed through foam process by cullet.The glass haydite mainly contains following characteristics: 1. raw material adopts all kinds of cullet, industrial residue; 2. production efficiency is high, and the rate that manufactures a finished product is higher than multicellular glass far away; 3. glued through gelling material, can form utmost point extensive use; 4. light weight, ultimate compression strength height are durable in use.The glass haydite can be used for making the member or the lagging material of light-weight building.The high-rise frame structure building fast development of current China requires the materials for wall high-strength light.The performance characteristics of glass haydite is just meeting the needs of modern architecture industry, and this material replaces sandstone as the aggregate in the light weight concrete, and to alleviating buildings weight, it is energy-conservation etc. significant to improve wall light.
Glass haydite inside is full of countless small pores, is prone to processing, and indeformable, stable performance is described as " the permanent lagging material that must not change ", can be widely used in fields such as petrochemical complex, light industry, refrigeration, building, bridge, underground works.The glass haydite is compared with various inorganic lightweight materials, and advantage is that thermal conductivity is low, water-intake rate is low, stable performance, and description is various, and is of many uses, and energy-conservation and environmental protection has a extensive future.
Summary of the invention
The object of the invention overcomes the above-mentioned deficiency that prior art exists, and a kind of method of utilizing incineration of refuse flyash and cullet to prepare haydite is provided, and concrete technical scheme is following.
A kind of method of utilizing incineration of refuse flyash and cullet to prepare haydite is characterized in that comprising the steps:
(1) at first, subsequent use with crossing 200 mesh sieves behind the fragmentation of depleted glass, the ball milling;
(2) incineration of refuse flyash of getting 5 ~ 90 parts of cullet powder and 10 ~ 95 parts behind broken ball milling by mass fraction mixes; Add the whipping agent that accounts for mixture quality 0.1% ~ 5%; Mix, add the percolate that accounts for said mixture quality 5% ~ 50% again, the back that stirs forms admixtion;
(3) admixtion is dropped into the nodulizer granulation, put into retort furnace, according to following technological process sintering:
Pre-heating stage: the temperature rise rate with 3 ~ 6 ℃/min is raised to 120 ~ 130 ℃ from room temperature;
Temperature rise period: be warmed up to 900 ~ 1200 ℃ with 5 ~ 10 ℃/min;
The insulation annealing stage: behind 900 ~ 1200 ℃ of insulation 0.5 ~ 4h, be cooled to room temperature, get the glass haydite with furnace temperature.
As the technical scheme of further optimization, the said granulation of step (3) is the pellet that admixtion is prepared into 0.5 ~ 1cm particle diameter.
As the technical scheme of further optimization, the cullet described in the step (1) is common dull and stereotyped glass cullet or bottle glass.
As the technical scheme of further optimization, described cullet comprises white glass or brown glass.
As the technical scheme of further optimization, the said whipping agent of step (2) is CaCO
3, NaHCO
3In one or both.
The above-mentioned method of utilizing incineration of refuse flyash and cullet to prepare haydite, but said rubbish is domestic refuse.
Compared with prior art, the present invention has following advantage and technique effect:
The invention provides a kind of method of utilizing incineration of refuse flyash and cullet to prepare haydite, realized solidifying effectively the toxic substance in the flying dust, hypertoxic organism such as Shi dioxin are fully decomposed; Heavy metals such as lead, cadmium are cured in the lattice of silicon, aluminium skeleton; It leaches toxicity well below national standard, improved the environmental stability and the security of flying dust greatly, and this method place technology is simple; Added value is high; Simultaneously effectively treating refuse percolate, flying ash and scrap glass, and can not cause secondary pollution to environment, be a kind of method of effective waste resource utilization.
Description of drawings
Fig. 1 utilizes incineration of refuse flyash, percolate and cullet to prepare the method flow synoptic diagram of haydite.
Embodiment
Below through embodiment the present invention is described further.But the scope that the present invention requires to protect is the scope represented in embodiment of limitation not.
Adopt China's " solid waste leaches the horizontal succusion of toxicity leaching method " (HJ557-2009) the leaching toxicity of flying dust to be differentiated; The content of Cu, Zn, Pb, Cd, Cr and Ni is used the atomic absorption flame sectional light absorbance technique determining in the flying dust leach liquor, and the result sees table 1, table 2.
The leaching toxicity test result (mg/L) of table 1 incineration of refuse flyash leach liquor
| Project | Measured value | Threshold limit value | ? |
| pH | 12.36 | ? | ? |
| Cu | 5.4 | 100 | ? |
| Zn | 170.4 | 100 | ? |
| Pb | 205 | 5 | ? |
| Cd | 2.8 | 1 | ? |
| Cr | 38.4 | 15 | ? |
| Ni | 0.4 | 5 | ? |
Table 2 percolate specificity analysis
| Project | Measured value |
| pH | 7.86 |
| COD（mg/L） | 3210 |
| Cu | 0.51 |
| Zn | 1.5 |
| Pb | <0.5 |
| Cd | 0.03 |
| Cr | 2.6 |
| Ni | 1 |
The method flow of following instance can be participated in Fig. 1.
Embodiment 1:
A, with the cullet of 90 parts of quality group marks, broken, grind, cross 200 mesh sieves, adding the quality group umber while stirring with 20-30 r/min rotating speed under the room temperature is 60 incineration of refuse flyash, and adds whipping agent CaCO
30.5 part, continuously stirring is mixed, and forms uniform flying dust+glass pulverulent mixture.
B, with the pulverulent mixture that the A step obtains, at normal temperatures with in the 20-30r/min rotating speed whipping process, add 40 parts of consumer waste infiltration liquids, continuously stirring is mixed, and finally forms uniform mortar mix.
C, with the mortar mix granulation that B forms, process 0.5 ~ 1cm bead.Then the little pellet of moulding is put into the retort furnace roasting.The heat-up rate of control retort furnace is 5 ℃/min, and temperature rise to 130 ℃ makes pellet that sufficient drying and preheating arranged before roasting.Be warmed up to 900 ℃ of maturing temperatures with 5 ℃/min, insulation 4h.
D, employing naturally cooling make fire box temperature reduce to room temperature naturally.
The material that from retort furnace, comes out is the glass haydite.Glass haydite unit weight 1350kg/m
3Ultimate compression strength 30.12MPa, water-intake rate 4.1%, pollutent indexs such as physical strength and heavy metal all satisfy the requirement of building light skeletal; Whole process waste discharge and waste gas satisfy the relevant laws and regulations requirement; De dioxin rate of decomposition reaches 99% in the flying dust, according to China's " the Hazardous wastes judging standard leaches toxicity and differentiates " (GB5085.3-2007), the glass haydite of preparation is pressed " solid waste leaches the horizontal succusion of toxicity leaching method " (HJ557-2009) carry out leaching toxicity test; It is 0.008 mg/L that the element Zn that exceeds standard leaches concentration; It is 0.012 mg/L that Pb leaches concentration, and it is 0.001 mg/L that Cd leaches concentration, and it is 0.025 mg/L that Cr leaches concentration; Satisfy Hazardous wastes judging standard and Hazardous wastes standard of landfill far away, reached the purpose of percolate, flying ash and scrap glass disposal of resources simultaneously simultaneously.
Embodiment 2:
A, with the cullet of 40 parts of quality group marks, broken, grind, cross 200 mesh sieves, adding the quality group mark while stirring with 20-30 r/min rotating speed under the room temperature is 60 incineration of refuse flyash, and adds whipping agent Na
2CO
35 parts, continuously stirring is mixed, and forms uniform flying dust+glass pulverulent mixture.
B, with the pulverulent mixture that the A step obtains, at normal temperatures with in the 20-30r/min rotating speed whipping process, add 40 parts of consumer waste infiltration liquids, continuously stirring is mixed, and finally forms uniform mortar mix.
C, with the mortar mix granulation that B forms, process 0.5 ~ 1cm bead.Then the little pellet of moulding is put into the retort furnace roasting.The heat-up rate of control retort furnace is 5 ℃/min, and temperature rise to 120 ℃ makes pellet that sufficient drying and preheating arranged before roasting.Be warmed up to 1000 ℃ of maturing temperatures with 8 ℃/min, insulation 2.5h.
D, employing naturally cooling make fire box temperature reduce to room temperature naturally.
The material that from retort furnace, comes out is the glass haydite.Glass haydite unit weight 1245kg/m
3, ultimate compression strength 28.71MPa, water-intake rate 3.7%; Pollutent such as physical strength and heavy metal index all satisfies the requirement of building light skeletal; Whole process waste discharge and waste gas satisfy the relevant laws and regulations requirement, and De dioxin rate of decomposition reaches 99% in the flying dust, according to China's " the Hazardous wastes judging standard leaches toxicity and differentiates " (GB5085.3-2007); Glass haydite to preparation (HJ557-2009) carries out leaching toxicity test by " solid waste leaches the horizontal succusion of toxicity leaching method "; It is 0.036 mg/L that the element Zn that exceeds standard leaches concentration, and it is 0.015 mg/L that Pb leaches concentration, and it is 0.010 mg/L that Cd leaches concentration; It is 0.072 mg/L that Cr leaches concentration, satisfies Hazardous wastes judging standard and Hazardous wastes standard of landfill.
Embodiment 3:
A, with the cullet of 80 parts of quality group marks, broken, grind, cross 200 mesh sieves, adding the quality group mark while stirring with 20-30 r/min rotating speed under the room temperature is 20 incineration of refuse flyash, and adds whipping agent CaCO
30.5 part, continuously stirring is mixed, and forms uniform flying dust+glass pulverulent mixture.
B, with the pulverulent mixture that the A step obtains, at normal temperatures with in the 20-30r/min rotating speed whipping process, add 60 parts of consumer waste infiltration liquids, continuously stirring is mixed, and finally forms uniform mortar mix.
C, with the mortar mix granulation that B forms, process 0.5 ~ 1cm bead.Then the little pellet of moulding is put into the retort furnace roasting.The heat-up rate of control retort furnace is 3 ℃/min, and temperature rise to 125 ℃ makes pellet that sufficient drying and preheating arranged before roasting.Be warmed up to 1200 ℃ of maturing temperatures with 10 ℃/min, insulation 1h.
D, employing naturally cooling make fire box temperature reduce to room temperature naturally.
The material that from retort furnace, comes out is the glass haydite.Glass haydite unit weight 1200kg/m
3, ultimate compression strength 33.58MPa, water-intake rate 3.5%; Pollutent such as physical strength and heavy metal index all satisfies the requirement of building light skeletal; Whole process waste discharge and waste gas satisfy the relevant laws and regulations requirement, and De dioxin rate of decomposition reaches 99% in the flying dust, according to China's " the Hazardous wastes judging standard leaches toxicity and differentiates " (GB5085.3-2007); Glass haydite to preparation (HJ557-2009) carries out leaching toxicity test by " solid waste leaches the horizontal succusion of toxicity leaching method "; It is 0.0047 mg/L that the element Zn that exceeds standard leaches concentration, and it is 0.022 mg/L that Pb leaches concentration, and it is 0.029 mg/L that Cd leaches concentration; It is 0.001 mg/L that Cr leaches concentration, satisfies Hazardous wastes judging standard and Hazardous wastes standard of landfill.
Embodiment 4:
A, with the cullet of 90 parts of quality group marks, broken, grind, cross 200 mesh sieves, adding the quality group mark while stirring with 20-30 r/min rotating speed under the room temperature is 60 incineration of refuse flyash, and adds whipping agent Na
2CO
30.5 part, continuously stirring is mixed, and forms uniform flying dust+glass pulverulent mixture.
B, with the pulverulent mixture that the A step obtains, at normal temperatures with in the 20-30r/min rotating speed whipping process, add 80 parts of consumer waste infiltration liquids, continuously stirring is mixed, and finally forms uniform mortar mix.
C, with the mortar mix granulation that B forms, process 0.5 ~ 1cm bead.Then the little pellet of moulding is put into the retort furnace roasting.The heat-up rate of control retort furnace is 5 ℃/min, makes pellet that sufficient drying and warm up time arranged before roasting.Maturing temperature is controlled at 1000 ℃.
D, employing naturally cooling make fire box temperature reduce to room temperature naturally.
Identical with embodiment 1, be described flying ash quality group mark be 95,80 parts of percolate consumer waste infiltration liquids, maturing temperature are controlled to be 1200 ℃, soaking time is 0.5h.
The material that from retort furnace, comes out is the glass haydite.Glass haydite unit weight 1120kg/m
3, ultimate compression strength 28.58MPa, water-intake rate 4.6%; Pollutent such as physical strength and heavy metal index all satisfies the requirement of building light skeletal; Whole process waste discharge and waste gas satisfy the relevant laws and regulations requirement, and De dioxin rate of decomposition reaches 98% in the flying dust, according to China's " the Hazardous wastes judging standard leaches toxicity and differentiates " (GB5085.3-2007); Glass haydite to preparation (HJ557-2009) carries out leaching toxicity test by " solid waste leaches the horizontal succusion of toxicity leaching method "; It is 0.002 mg/L that the element Zn that exceeds standard leaches concentration, and it is 0.035 mg/L that Pb leaches concentration, and it is 0.031 mg/L that Cd leaches concentration; It is 0.001 mg/L that Cr leaches concentration, satisfies Hazardous wastes judging standard and Hazardous wastes standard of landfill.
Method of the present invention need be such as washing and pre-treatment such as drying, so whole method of manufacture is simplified and has reduced associated cost.And he can be through regulating the glass haydite that particle size obtains different purposes.Although the present invention has been carried out specifying and has been described with reference to its exemplary embodiment; But it should be appreciated by those skilled in the art; In not breaking away from the claim of liking enclosed, define in marrow of the present invention and the scope, can carry out multiple variation in form and details.
Claims (6)
1. a method of utilizing incineration of refuse flyash and cullet to prepare haydite is characterized in that comprising the steps:
(1) at first, subsequent use with crossing 200 mesh sieves behind the fragmentation of depleted glass, the ball milling;
(2) incineration of refuse flyash of getting 5 ~ 90 parts of cullet powder and 10 ~ 95 parts behind broken ball milling by mass fraction mixes; Add the whipping agent that accounts for mixture quality 0.1% ~ 5%; Mix, add the percolate that accounts for said mixture quality 5% ~ 50% again, the back that stirs forms admixtion;
(3) admixtion is dropped into the nodulizer granulation, put into retort furnace, according to following technological process sintering:
Pre-heating stage: the temperature rise rate with 3 ~ 6 ℃/min is raised to 120 ~ 130 ℃ from room temperature;
Temperature rise period: be warmed up to 900 ~ 1200 ℃ with 5 ~ 10 ℃/min;
The insulation annealing stage: behind 900 ~ 1200 ℃ of insulation 0.5 ~ 4h, be cooled to room temperature, get the glass haydite with furnace temperature.
2. a kind of method of utilizing incineration of refuse flyash and cullet to prepare haydite according to claim 1 is characterized in that: the said granulation of step (3) is the pellet that admixtion is prepared into 0.5 ~ 1cm particle diameter.
3. a kind of method of utilizing incineration of refuse flyash and cullet to prepare haydite according to claim 1 is characterized in that: the cullet described in the step (1) is common dull and stereotyped glass cullet or bottle glass.
4. a kind of method of utilizing incineration of refuse flyash and cullet to prepare haydite according to claim 3, it is characterized in that: described cullet comprises white glass or brown glass.
5. a kind of method of utilizing incineration of refuse flyash and cullet to prepare haydite according to claim 1 is characterized in that: the said whipping agent of step (2) is CaCO
3, NaHCO
3In one or both.
6. a kind of method of utilizing incineration of refuse flyash and cullet to prepare haydite according to claim 1 is characterized in that: said rubbish is domestic refuse.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103539426A (en) * | 2013-09-30 | 2014-01-29 | 环境保护部华南环境科学研究所 | Method of preparing ceramsite by utilizing municipal sewage plant sludge and waste glass |
| CN104108946A (en) * | 2014-04-25 | 2014-10-22 | 武汉理工大学 | Garbage incineration fly ash -based foamed ceramic and preparation method thereof |
| CN104402403A (en) * | 2014-10-17 | 2015-03-11 | 天津城建大学 | Garbage burning ash cured heavy metal high-strength ceramisite preparation method |
| CN105036707A (en) * | 2015-07-23 | 2015-11-11 | 厦门大学 | Method for preparing building ceramisites by means of household garbage incineration bottom ash |
| CN108975663A (en) * | 2018-08-13 | 2018-12-11 | 北京科技大学 | A kind of method that cinder from refuse incineration collaboration cullet prepares glass microballoon |
| CN109404916A (en) * | 2018-10-31 | 2019-03-01 | 重庆盎瑞悦科技有限公司 | A kind of incineration of refuse flyash high-temperature fusion harmless treatment process |
| CN109437573A (en) * | 2018-12-12 | 2019-03-08 | 北京科技大学 | A kind of incineration of refuse flyash dioxin method for innocent treatment |
| CN113880552A (en) * | 2021-09-10 | 2022-01-04 | 武汉科技大学 | Foamed ceramic based on waste incineration fly ash and preparation method thereof |
| CN114044630A (en) * | 2021-12-14 | 2022-02-15 | 深圳市华威环保建材有限公司 | Regenerated porous glass ceramic and preparation method and application thereof |
| CN115041504A (en) * | 2022-06-28 | 2022-09-13 | 光大环境科技（中国）有限公司 | Harmless treatment process and system for waste incineration fly ash |
| CN115254897A (en) * | 2022-07-25 | 2022-11-01 | 南京师范大学镇江创新发展研究院 | Process for preparing formed fuel based on rural domestic garbage and agricultural waste |
| CN117510183A (en) * | 2023-11-10 | 2024-02-06 | 北京科技大学 | Concrete aggregate prepared from waste incineration fly ash and preparation method thereof |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103539426A (en) * | 2013-09-30 | 2014-01-29 | 环境保护部华南环境科学研究所 | Method of preparing ceramsite by utilizing municipal sewage plant sludge and waste glass |
| CN104108946A (en) * | 2014-04-25 | 2014-10-22 | 武汉理工大学 | Garbage incineration fly ash -based foamed ceramic and preparation method thereof |
| CN104108946B (en) * | 2014-04-25 | 2016-01-06 | 武汉理工大学 | A kind of incineration of refuse flyash base foamed ceramics and preparation method thereof |
| CN104402403A (en) * | 2014-10-17 | 2015-03-11 | 天津城建大学 | Garbage burning ash cured heavy metal high-strength ceramisite preparation method |
| CN104402403B (en) * | 2014-10-17 | 2016-01-20 | 天津城建大学 | A kind of preparation method of incinerator ash curing heavy metal high-strength ceramic granule |
| CN105036707A (en) * | 2015-07-23 | 2015-11-11 | 厦门大学 | Method for preparing building ceramisites by means of household garbage incineration bottom ash |
| CN105036707B (en) * | 2015-07-23 | 2017-09-15 | 厦门大学 | The method that consumer waste incineration bottom ash prepares building porcelain granule |
| CN108975663A (en) * | 2018-08-13 | 2018-12-11 | 北京科技大学 | A kind of method that cinder from refuse incineration collaboration cullet prepares glass microballoon |
| CN109404916A (en) * | 2018-10-31 | 2019-03-01 | 重庆盎瑞悦科技有限公司 | A kind of incineration of refuse flyash high-temperature fusion harmless treatment process |
| CN109437573A (en) * | 2018-12-12 | 2019-03-08 | 北京科技大学 | A kind of incineration of refuse flyash dioxin method for innocent treatment |
| CN109437573B (en) * | 2018-12-12 | 2020-08-28 | 北京科技大学 | Harmless treatment method for waste incineration fly ash dioxin |
| CN113880552A (en) * | 2021-09-10 | 2022-01-04 | 武汉科技大学 | Foamed ceramic based on waste incineration fly ash and preparation method thereof |
| CN114044630A (en) * | 2021-12-14 | 2022-02-15 | 深圳市华威环保建材有限公司 | Regenerated porous glass ceramic and preparation method and application thereof |
| CN114044630B (en) * | 2021-12-14 | 2023-10-20 | 深圳市华威环保建材有限公司 | Regenerated porous glass ceramic and preparation method and application thereof |
| CN115041504A (en) * | 2022-06-28 | 2022-09-13 | 光大环境科技（中国）有限公司 | Harmless treatment process and system for waste incineration fly ash |
| CN115254897A (en) * | 2022-07-25 | 2022-11-01 | 南京师范大学镇江创新发展研究院 | Process for preparing formed fuel based on rural domestic garbage and agricultural waste |
| CN117510183A (en) * | 2023-11-10 | 2024-02-06 | 北京科技大学 | Concrete aggregate prepared from waste incineration fly ash and preparation method thereof |
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Application publication date: 20120822 |