CN109942272A - High-intensitive aerated bricks and preparation method thereof - Google Patents
High-intensitive aerated bricks and preparation method thereof Download PDFInfo
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- CN109942272A CN109942272A CN201711392295.1A CN201711392295A CN109942272A CN 109942272 A CN109942272 A CN 109942272A CN 201711392295 A CN201711392295 A CN 201711392295A CN 109942272 A CN109942272 A CN 109942272A
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- haydite
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- aerated bricks
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
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Abstract
The invention belongs to technical field of sludge treatment, disclose the production method of high-intensitive aerated bricks comprising following steps: step 1) prepares haydite, and step 2 prepares foaming agent, and step 3) prepares water-reducing agent, and step 4) prepares aerated bricks.This method has carried out recycling treatment to sludge, has made construction material, and realizing turns waste into wealth.
Description
Technical field
The invention belongs to technical field of sludge treatment, it is related to high-intensitive aerated bricks and preparation method thereof, more particularly to utilizes
Sludge prepares high-intensitive aerated bricks and preparation method thereof.
Background technique
Aerated bricks are also referred to as air-entrained concrete building block, very widely used, are used primarily in machinery plant and civil buildings
Materials for wall, filling wall, load-bearing walling and the non-bearing material and surrounding such as floor and roof boarding filling enclosure wall.Aerated bricks
It is the aerating brick block produced by autoclave at high temperature apparatus and process, i.e., using other various technique productions including steam pressure
Brick product are a kind of novel wall materials, it is unique in that it is that a kind of the novel of very light-duty insulation is built
Walling material, and the ratio that this technology in China starts is later, it is more whole than foreign countries to have fallen behind 40 years, still, the aerated bricks in China
The development of industry is very fast, and domestic aerated bricks technical matters level can achieve international most advanced level now.With
The development of building trade, building is higher and higher to add requirement of the people to quality of the life, to the intensity of aerated bricks, corrosion-resistant
The requirements such as property, shrinkage value, frost resistance all increase.And the aerated bricks intensity of conventional method preparation is low, anti-freezing property is poor, brick
Body moisture-sensitive is mouldy, and brick body ageing-resistant performance itself is poor, substantially reduces brick body service life.
Haydite is the particle of ceramic, the appearance rounded or oval-shaped ball of majority or cylindrical body.The surface of haydite is attached
There is one layer of hard shell, this layer of shell is ceramic or enamel, is used to water proof and protects gas, and makes haydite intensity with higher.
Haydite has the characteristics that cylindrical compress strength is high, density is small, water absorption rate is low, coefficient of softing is high, frost resistance is good.It is excellent just because of these
Different performance is made pottery at present so that haydite is widely used in the field of building materials, petrochemical industry, gardening gardens field etc.
The application field of grain also is continuing to expand.Currently, haydite, which has been used to substitution concrete, is applied to aerated bricks preparation field.
Amino acids production enterprise can generate a large amount of activated sludge, and ingredient is complex, and processing sludge is the one of enterprise
Hang-up be easy to cause secondary pollution, and to resource or a kind of waste if dealt with improperly.At present, burning is place
The main means of sludge are managed, the lime-ash after burning can also be used in construction material.How sludge rationally to be utilized, with Building wood
Material combines, and is the amino acids production enterprise technical issues that need to address.
Summary of the invention
Present invention aim to address the defects of the prior art, provide high-intensitive aerated bricks and preparation method thereof.
The present invention is achieved by the following technical solution,
The production method of high-intensitive aerated bricks comprising following steps: step 1) prepares haydite, and step 2 prepares foaming agent, step
Rapid 3) to prepare water-reducing agent, step 4) prepares aerated bricks.
Further,
The step 1) prepares haydite, includes the following steps: for activated sludge to be carried out dehydrating, until water content is 60-
Then 80wt% is mixed with flyash, quartz sand and clay according to the mass ratio of 5-7:4-6:2-3:1-2,200rpm stirring
5min is then added in ball mill and carries out ball milling, is granulated subsequently into roller pelletizer, then be placed under the conditions of 90-100 DEG C, dries
It is 1-2 hours dry, it is then placed in combustion gas rotary kiln in 1200 DEG C of -1300 DEG C of calcining 15min, is cooled to room temperature, haydite is made.
Further,
The step 2 prepares foaming agent, includes the following steps: for activated sludge to be carried out dehydrating, until water content is less than
Then 40wt% is dried to moisture content lower than 20wt%, is then added in the 5M hydrochloric acid solution of phase homogenous quantities, is heated to 90
DEG C, 6-9h is hydrolyzed under heat-retaining condition, then 5min is centrifuged with 1000rpm, collect precipitating to get foaming agent.
Further,
The step 3) prepares water-reducing agent, includes the following steps: wheat bran being ground into powder, sieve with 100 mesh sieve, is then added to two
The concentration of times weight is to stir 10min in the magnesium chloride brine of 3M with the mixing speed of 200rpm, be then allowed to stand 30min, mistake
Filter collects precipitating to get water-reducing agent.
Further,
The step 4) prepares aerated bricks, include the following steps: by haydite, phosphate cement, foaming agent, water-reducing agent and water by
According to the mass ratio mixing of 100-200:30-50:10-15:3-5:60-90, stirs evenly, be subsequently poured into mold, pass through pressure
Machine is pressed, and obtains adobe body；Adobe body is put into resting room, 60 DEG C of resting room sealing thermal insulation, the time 3 of resting is small
When；The adobe body rested is cut by cutting machine blocking, is finally putting into after carrying out steam press maintenance processing in steam-cured kettle, i.e.,
It can.
Preferably,
The condition of the steam press maintenance processing are as follows: temperature is 180-200 DEG C, pressure 1.5-2MPa, time 2-3h.
Preferably,
Under conditions of the compression moulding: press strengthi 20-22MPa, pressing time 30-45s.
The present invention be also claimed according to it is above-mentioned be allowed to one described in production method obtain aerated bricks.
Technical solution of the present invention has following prominent characteristics and marked improvement, but be not restricted to that the following aspects:
Haydite is made using the compounding sintering of sludge, flyash, quartz sand and clay in the present invention, realizes the decrement to sludge
Change, harmless treatment, and has carried out resource utilization；
The present invention heats hydrolysis process activated sludge by drying, so as to be hydrolyzed into small fragment more for the mycoprotein in sludge
Peptide and amino acid can be used as foaming agent, and stability and compatibility are good, reduce costs, and waste is utilized；
Wheat bran belongs to waste, uses wheat bran as water-reducing agent, has the requirement such as anti-freezing impermeabilisation, hydrophily is very strong, water suction
After expand, poor adhesion and condensation are slow, and magnesium chloride plays the role of anticorrosive mildewproof to agricultural wastes, prevents it from preparing
The serious phenomenon of slow setting in journey, improves the service life of product；
The material combination of aerated bricks of the present invention is reasonable, low in cost, and preparation process is simple, and has intensity height, and light weight is protected
The advantages that warm heat insulation performance is good, has a extensive future.
Figure of description
Fig. 1: influence of the haydite additive amount to aerated bricks density；
Fig. 2: influence of the haydite additive amount to aerated bricks intensity.
Specific embodiment
In order to make those skilled in the art better understand the technical solutions in the application, having below in conjunction with the application
Body embodiment more clearly and completely describes the present invention, it is clear that described embodiment is only the application one
Divide embodiment, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making
Every other embodiment obtained, should fall within the scope of the present invention under the premise of creative work.
Embodiment 1
The production method of high-intensitive aerated bricks comprising following steps:
Prepare haydite: activated sludge be carried out dehydrating, until water content is 70wt%, then with flyash, quartz sand and viscous
Soil is mixed according to the mass ratio of 5:4:2:1, and then 200rpm stirs 5min, is then added in ball mill and is milled to mix size
For 50 mesh；It is granulated subsequently into roller pelletizer, control partial size is 2mm, then is placed under the conditions of 90-100 DEG C, drying 1 hour, so
After be put into combustion gas rotary kiln in 1200 DEG C of calcining 15min, be cooled to room temperature, cooling velocity be 10 DEG C/min；Obtained partial size is
The haydite of 6mm；
It prepares foaming agent: activated sludge is carried out dehydrating, until water content is less than 40wt%, it is low to be then dried to moisture content
It in 20wt%, is then added in the 5M hydrochloric acid solution of phase homogenous quantities, is heated to 90 DEG C, hydrolyze 7h under heat-retaining condition, then with
1000rpm is centrifuged 5min, collects precipitating to get foaming agent；
It prepares water-reducing agent: wheat bran being ground into powder, is sieved with 100 mesh sieve, the concentration for being then added to double weight is the chlorination of 3M
In magnesium aqueous solution, 10min is stirred with the mixing speed of 200rpm, is then allowed to stand 30min, precipitating is collected by filtration to get water-reducing agent；
Prepare aerated bricks: the quality by haydite, phosphate cement, foaming agent, water-reducing agent and water according to 100:30:10:3:60
Than mixing, stirs evenly, be subsequently poured into mold, be pressed by press machine, obtain adobe body, wherein press strengthi is
20MPa, pressing time 45s；Adobe body is put into resting room, 60 DEG C of resting room sealing thermal insulation, is rested the time 3 hours；It will
The adobe body rested cut by cutting machine it is blocking, be finally putting into steam-cured kettle carry out steam press maintenance processing after, wherein
The temperature of steam press maintenance processing is 180 DEG C, pressure 2MPa, time 2h.
Through detecting, the density of above-mentioned aerated bricks is 561kg/ cubic metres, compression strength 26.5Mpa, and thermal coefficient is
0.14w/m·k。
Embodiment 2
The production method of high-intensitive aerated bricks comprising following steps:
Prepare haydite: activated sludge be carried out dehydrating, until water content is 80wt%, then with flyash, quartz sand and viscous
Soil is mixed according to the mass ratio of 7:6:3:2, and then 200rpm stirs 5min, is then added in ball mill and is milled to mix size
For 50 mesh；It is granulated subsequently into roller pelletizer, control partial size is 3mm, then is placed under the conditions of 100 DEG C, drying 2 hours, then
It is put into combustion gas rotary kiln in 1300 DEG C of calcining 15min, is cooled to room temperature, cooling velocity is 10 DEG C/min；It is 6mm that partial size, which is made,
Haydite；
It prepares foaming agent: activated sludge is carried out dehydrating, until water content is less than 40wt%, it is low to be then dried to moisture content
In 20wt%, in the 5M hydrochloric acid solution that then adds phase homogenous quantities, 90 DEG C are heated to, hydrolyzes 9h under heat-retaining condition, then with
1000rpm is centrifuged 5min, collects precipitating to get foaming agent；
It prepares water-reducing agent: wheat bran being ground into powder, is sieved with 100 mesh sieve, the concentration for being then added to double weight is the chlorination of 3M
In magnesium aqueous solution, 10min is stirred with the mixing speed of 200rpm, is then allowed to stand 30min, precipitating is collected by filtration to get water-reducing agent；
Prepare aerated bricks: the quality by haydite, phosphate cement, foaming agent, water-reducing agent and water according to 200:50:15:5:90
Than mixing, stirs evenly, be subsequently poured into mold, be pressed by press machine, obtain adobe body, wherein press strengthi is
22MPa, pressing time 30s；Adobe body is put into resting room, 60 DEG C of resting room sealing thermal insulation, is rested the time 3 hours；It will
The adobe body rested cut by cutting machine it is blocking, be finally putting into steam-cured kettle carry out steam press maintenance processing after, wherein
The temperature of steam press maintenance processing is 200 DEG C, pressure 1.5MPa, time 3h.
Through detecting, the density of above-mentioned aerated bricks is 579kg/ cubic metres, compression strength 27.3Mpa, and thermal coefficient is
0.13w/m·k。
Embodiment 3
Activated sludge compound mensuration such as the following table 1 of the present invention, with the metering of desiccation activated sludge, weight percentage of each component is as follows:
Table 1
| Component % | Silica | Aluminium oxide | Iron oxide | Calcium oxide | Total sulfur | Total phosphorus | Mycoprotein | Other |
| Desiccation activated sludge | 26.1 | 12.7 | 9.5 | 22.3 | 9.2 | 5.3 | 3.1 | Surplus |
Embodiment 4
The haydite performance test of 1-2 of embodiment of the present invention preparation:
Bulk density test method is acquired referring to GB/T17431.1-1998, grain density by Archimedes principle.Specifically it is shown in Table
2:
Table 2
| Group | Bulk density kg/m3 | Grain density kg/m3 |
| Embodiment 1 | 483 | 1087 |
| Embodiment 2 | 491 | 1134 |
Conclusion: haydite lighter weight of the present invention belongs to light ceramic, can mitigate the weight of construction material.
Embodiment 5
Influence of the haydite additive amount of the present invention to aerated bricks density and intensity:
By taking embodiment 1 as an example, control group is set, wherein control group 1: by haydite, phosphate cement, foaming agent, water-reducing agent and
Water is mixed according to the mass ratio of 50:30:10:3:40, remaining is the same as embodiment 1；Control group 2: by haydite, phosphate cement, foaming
Agent, water-reducing agent and water are mixed according to the mass ratio of 80:30:10:3:50, remaining is the same as embodiment 1；Control group 3: by haydite, phosphorus
Acid salt cement, foaming agent, water-reducing agent and water are mixed according to the mass ratio of 150:30:10:3:90, remaining is the same as embodiment 1；Control
Group 4: haydite, phosphate cement, foaming agent, water-reducing agent and water are mixed according to the mass ratio of 150:30:10:3:90, remaining
With embodiment 1；As shown in Figs. 1-2, with the increase of haydite additive amount, density decreases, and intensity is also increasing, but increases
To after certain proportion, intensity is not significantly increased, is decreased instead, and density continues to reduce, it is contemplated that enterprise's preparation pottery
The cost problem and construction material materials problem of grain, select optimal intensity and suitable density, as optimal ratio.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, although with reference to the foregoing embodiments
Invention is explained in detail, for those skilled in the art, still can be to foregoing embodiments institute
The technical solution of record is modified or equivalent replacement of some of the technical features.It is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (8)
1. the production method of high-intensitive aerated bricks comprising following steps: step 1) prepares haydite, and step 2 prepares foaming agent,
Step 3) prepares water-reducing agent, and step 4) prepares aerated bricks.
2. manufacturing method according to claim 1, which is characterized in that the step 1) prepares haydite, includes the following steps:
Activated sludge is carried out dehydrating, until water content is 60-80wt%, then with flyash, quartz sand and clay according to 5-7:
The mass ratio of 4-6:2-3:1-2 mixes, and 200rpm stirs 5min, is then added in ball mill and carries out ball milling, subsequently into roller
Pelletizer is granulated, then is placed under the conditions of 90-100 DEG C, is dried 1-2 hours, is then placed in combustion gas rotary kiln at 1200 DEG C -1300
DEG C calcining 15min, be cooled to room temperature, be made haydite.
3. production method according to claim 1 to 2, which is characterized in that the step 2 prepares foaming agent, including as follows
Step: activated sludge is carried out dehydrating, until water content is less than 40wt%, is then dried to moisture content lower than 20wt%, so
It is added in the 5M hydrochloric acid solution of phase homogenous quantities afterwards, is heated to 90 DEG C, 6-9h is hydrolyzed under heat-retaining condition, then be centrifuged with 1000rpm
5min collects precipitating to get foaming agent.
4. production method according to claim 1 to 3, which is characterized in that the step 3) prepares water-reducing agent, including as follows
Step: being ground into powder for wheat bran, sieve with 100 mesh sieve, be then added to double weight concentration be 3M magnesium chloride brine in,
10min is stirred with the mixing speed of 200rpm, is then allowed to stand 30min, precipitating is collected by filtration to get water-reducing agent.
5. production method described in -4 according to claim 1, which is characterized in that the step 4) prepares aerated bricks, including as follows
Step: by haydite, phosphate cement, foaming agent, water-reducing agent and water according to 100-200:30-50:10-15:3-5:60-90's
Mass ratio mixing, stirs evenly, is subsequently poured into mold, be pressed by press machine, obtain adobe body；Adobe body is put
Enter in resting room, 60 DEG C of resting room sealing thermal insulation, rests the time 3 hours；The adobe body rested is cut by cutting machine
Block is finally putting into after carrying out steam press maintenance processing in steam-cured kettle.
6. production method according to claim 5, which is characterized in that the condition of steam press maintenance processing are as follows: temperature is
180-200 DEG C, pressure 1.5-2MPa, time 2-3h.
7. production method according to claim 5, which is characterized in that the condition of the compression moulding are as follows: press strengthi is
20-22MPa, pressing time 30-45s.
8. according to claim 1-7 be allowed to one described in aerated bricks made from production method.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116354698A (en) * | 2023-03-02 | 2023-06-30 | 宜昌光大陶粒制品有限责任公司 | Method for preparing ceramsite by sludge in sewage plant and prepared ceramsite |
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Application publication date: 20190628 |